Patent Application
20160029733
The present invention is directed to an improved design for a helmet to reduce injuries caused by helmet-to-helmet collisions, with particular embodiments including novel quick release features that permit the detachment of a facemask from a helmet in 30 seconds or less, resulting in the ability to attend to an injured player in a rapid fashion and without the need for any additional tools to accomplish such removal.
The present invention relates to head protection methods and apparatus and, more particularly, to methods and apparatus for producing a head covering that substantially enhances the protection of the wearer in the event of a single high impact force event or repeated low impact force events where the force(s) could cause concussive injury. Various aspects of the present invention are further directed to the quick and safe removal of a facemask of a helmet to afford immediate assessment of injury and treatment thereof by an injured player.
Recent medical research reveals that concussions and cumulative head impacts can lead to lifelong neurological consequences. It is currently believed that repeated brain injuries, such as concussions, may lead to diseases later in life, such as depression, chronic traumatic encephalophathy (CTE), and amyotrophic lateral sclerosis (ALS) and early Alzheimer's. The U.S. Centers for Disease Control and Prevention, estimates 1.6-3.8 million sport-related brain injuries annually in the United States. Of these 300,000 are attributed to youth football players, some of whom die from their injuries every year—a tragedy difficult for their parents and families to recover from. The severity of the issue touching both the nation's youth and professional athletes has led to thousands of lawsuits and Congressional Hearings.
Over the past eighty years there have been significant modifications in helmet design. Yet despite advances in technology there is still debate as to whether existing helmets offer significant protection against concussion and traumatic brain injury. None of the football helmets on the market today offer what most would consider adequate protection against concussions and traumatic brain injuries. Studies have found that the 1930s Goldsmith leatherhead helmet actually outperformed several contemporary football helmets in terms of protecting against concussion and brain injury. Teaching proper hitting and tackling techniques, promoting isometric and isokinetic cervical strengthening programs, and continued concussion awareness and education, are recommended means of protecting athletes from the consequences of concussion and traumatic brain injury. But a better helmet design is also required to reduce the incidences of injury presently experienced by athletes, especially football players.
The plastic football helmet was invented in 1940 by John T. Riddell and his son John T. Riddell Jr. Dr. Richard Schneider invented an inflatable bladder for use inside a football helmet and started mass-producing the Air™ Helmet in the early 1970s, but it was heavy and did not breath well. Rigid polycarbonate alloy plastic helmets and vinyl coated steel alloy face masks were the norm in the 1980s and 1990, as well as today. Despite reports that a more spherical designed helmet purportedly reduced the incidences of concussion by 31%, a Senate Commerce Committee in 2011 found that there was no substantial evidence to support such a finding. Most existing designs incorporate a hard, inflexible outer shell and employ various schemes to create compressive shock absorption between the outer shell and the head of the user. Most of such designs focus on spreading out impact force energy and transferring it to a pad system adjacent to the wearer's head. But helmet manufacturers are forced to design these pads to provide proper fit, thus sacrificing safety for wearer comfort and in the process, compromising the production of a helmet design that is concussion resistant.
Current helmet certification standards are based on testing parameters that were developed in the 1960s, which focus on the attenuation of linear impact and prevention of skull fracture. The focus of headgear design has always been focused on attenuating linear impact. But recent studies indicate that both linear as well as rotational acceleration plays an important role in the pathophysiology of brain injury. Although nearly every head impact has a linear component and a rotational component, rotational acceleration is greatest when a tangential blow is sustained. A football player's facemask can act like a lever arm when impacted from the side, and can therefore apply large torsional forces to the head, which can easily result in brain trauma. The emphasis and direction of helmet innovations has seemingly failed to address this issue. Various embodiments of the present invention as described herein, address it head on.
Existing designs for football helmets incorporate a hard, inflexible outer shell and employ various schemes to create compressive shock absorption between the outer shell and the head of the user, thus merely spreading out an impact force's energy and transferring it to a pad system adjacent to the wearer's head. But spreading the force over a larger area, while reducing skull fracture and reducing the force per square inch, does not, in itself, reduce the total force acting on the pad system and the users head.
In addition to linear and rotational acceleration, translational impact is another factor that has largely been discounted by helmet designers, as their focus has again been directed to attenuating linear impact. Football players sustain mild TBI mostly by translational forces because the shell of the helmet allows the players to slide relative to one another, limiting head rotational accelerations. The headgear presently employed by the NFL reduces concussion risk by using thicker and more energy-absorbing padding on the side and back of the helmets and around the ears. Thus, there is a long-felt but unsolved need to provide a helmet that, in addition to addressing the linear impacts experienced by a player, also addresses the translational and rotational acceleration of the head in an effort to reduce the likelihood of brain injury.
There is also a great and urgent need to design helmets, especially football helmets, such that their facemasks can be quickly removed/detached from the helmets in a manner that does not cause further trauma to an injured player due to the time and physical manipulation of his/her head and neck when attempting to assess the player's condition and provide treatment. There is a need for a light weight helmet having a design that reduces the incidence of injury, that can better absorb contacts that would otherwise cause head injuries, and that further provides a way to detach a facemask from the helmet in a time-sensitive manner.
Three major advances provided by various embodiments of the present invention are: 1) PEEK comprising facemasks that provide lightweight, sturdy and yet flexible and yieldable face guards, including certain memory shape material, that can be employed to lessen blows; 2) shock absorbing assemblies provided on a helmet, preferably at least on two sides that connect with a face mask of a helmet, that lessen the brain injury potential due to helmet-to-helmet impact; and 3) the provision of quick release systems and assemblies, several employing a novel pivoting, rotating lever, which dispenses with the need for a separate tool to disengage the facemask from the helmet, so that injured layers may get medical attention in a rapid and effective fashion. Preferred embodiments incorporate one or more of these features, as well as other features as set forth herein, thereby providing a safe, lightweight helmet that significantly reduces the occurrence of concussions and brain injuries that would otherwise be encountered using prior art helmet designs.
Certain embodiments further include one or more devices for use in a system for monitoring protective headgear that includes a wireless device comprises a sensor module, coupled to the protective headgear that generates sensor data in response to an impact to the protective headgear. Preferably such module includes an accelerometer and a gyroscope such that the sensor data includes linear acceleration data and rotational velocity data. In other embodiments, a shock-absorbing helmet is provided, which has shock absorbers coupled between the helmet body and the facemask to absorb shocks upon an impact. Such a shock-absorbing helmet may include holder frames to hold shock absorbers at the helmet body, enabling the shock absorbers to absorb shocks from the facemask. Preferably, at least one shock absorber assembly (described further herein) is also employed between the facemask and the helmet securing mechanism, and still further preferred, one or more quick release elements (described herein) are employed such that the facemask can absorb blows but can still be immediately removed in the case of injury. In certain embodiments, an elastomeric shock absorber is employed that has enhanced damping characteristics and comprises a casing filled with a compressible elastomer. Various densities of elastomers may be selected to facilitate customization to reduce single direction compressive shock forces. Materials suitable for this application must be resilient, i.e. capable of withstanding shock without undue permanent deformation or rupture, and must have excellent flex life. Suitable materials may include of foamed polyurethane and vulcanized rubber, and microcellular polyurethane (MCU). For purposes of written description and without limiting the scope of the present invention, the following patents are incorporated herein by this reference: U.S. Pat. No. 5,495,923 to Bruski; and U.S. Pat. No. 4,880,087 to Janes.
In certain embodiments, the face mask is designed to avoid sticking outward from the front of the helmet beyond a certain distance, so as to avoid as much as possible the lever aspects presented with conventional football helmets when impacted from the side. Present embodiments preferably include a facemask protrusion that extends no more than 2 inches from the wearer's nose through the extent of the facemask face covering aspect.
To achieve these and other objects of the present invention, the shock-absorbing helmet comprises a helmet body, which has a receiving space for receiving the user's head and a front open side, a facemask provided at the front open side of the helmet body, and a plurality of shock absorbers mounted to the helmet body to absorb shocks upon an impact at the facemask.
Certain embodiments are directed to a shock-absorbing helmet that include a helmet body having a receiving space for receiving the user's head and a front open side; a facemask provided at the front open side of said helmet body; and at least two shock absorbers affixed to said helmet body and respectively coupled to said facemask to absorb shocks upon an impact at said facemask. The shock absorbers are preferably devoid of springs and instead employ resilient materials that are reversibly compressible but that do not present the breakage and weight issues presented by the use of spring type shock absorbers that use spring means to absorb shocks.
Even more preferred embodiments include a quick release feature that employs a clamp system for securing and unsecuring a facemask. Such a clamp system is configured to receive a facemask bar and includes a first lever having a cam surface and an opening on one end and a lever portion on an opposite end. The opening engages a first portion of a pin wherein the inwardly curved surface of the clamp engages the cam surfaces of the first lever. Still other embodiments include the use of a second lever having a cam surface and an opening on one end and a lever portion on an opposite end, wherein the opening of the second lever engages a second portion of the pin. In such embodiments, the first and second levers are independently rotatable about the pin and with respect to each other to move the clamp for securing or unsecuring the facemask. Such quick release systems are similar in various respects to quick release skewers employed in the bicycle field to connect bike seat posts, wheels to forks, etc. Such lever/cammed features are employed in various ways to reversibly secure facemask connection assemblies to a helmet such that injured players can be attended to in a far more rapid manner than is at present possible, e.g. in less than about 30 seconds for the total removal of the facemask—and without the use of outside tools, such as cordless screwdrivers, cutting tools, etc. Using such quick release assemblies in combination with other aspects of the present invention, such as the lightweight and impact absorbing facemask materials and configurations described herein, in addition to other shock absorbing assemblies that address facemask-helmet impacts, one is provided with a superior helmet that demonstrates a considerable advantage over conventional helmet designs and systems, most of which focus on padding of a user's head, rather than dealing with the absorption of impacts and the ability to quickly remove a facemask if and when a player is injured.
Quick release devices are well known in the bike industry to connect bike wheels, seat posts, etc. One aspect of the present invention is directed to use of a similar, but modified, quick release device on a helmet to connect a facemask. Various different quick release configurations can be employed, but preferably those chosen have a pivotable feature that provides the leverage required for tightening the screw that connects the helmet and facemask—without a separate tool being required. The locking mechanism preferred is either one that comprises a threaded connector or a bayonet mounted feature such that the facemask can be connected to the helmet in a quick release fashion that permits the facemask to be removed in a matter of seconds, preferably in less than 30 seconds, and more preferably in less than about 20 seconds. Such a quick release screw can connect a facemask securing platform to the helmet, preferably using just a single quick release screw on each side of the helmet. Preferably the fitting of the platform to the helmet involves the mating of certain structural conforming alignment features that allow a single screw, when sufficiently tightened, to hold the facemask securing platform to the exterior of the helmet in a secure fashion, such that significant collisions and impacts to the facemask or helmet, will not negatively affect the connection between the two. This is pictured in some of the figures where facemask bars are held in place to the helmet via a molded plastic element that presses at least two facemask bar portions to the helmet. Importantly, prior art helmets use a screw that requires a certain type of screwdriver to unscrew, thus entailing that such a screw driver be readily available when a player is injured—and that the attending persons to an injured player know how to detach the facemask without injury to the player's head and neck, in a timely fashion, etc.
Still other quick release mechanisms that may be employed in various embodiments of the present invention include those disclosed in U.S. Pat. No. 6,7222,711 to Kitzis, U.S. Pat. No. 2,373,083 to Brewster, and U.S. Pat. No. 5,014,365 to Schulz, all of which are incorporated herein in their entireties. In preferred embodiments that employ a magnetically actuated facemask/helmet coupler mechanism, a notable distinction as compared to such prior art release systems is the novel combination of a locking/securing device employed in retail establishments to prevent theft of items, redirected for the use of reversibly securing facemasks to helmets so as to provide more immediate medical attention to a potentially injured player of a sport, such as football. One of skill in the art, with the guidance provided herein as to what magnetic locking/securing systems may be appropriately used in the context of helmet/facemasks connects, will appreciate that one or more of the following references, all of which are incorporated herein by this reference, can be employed: US20140208559 to Stewart; 20120326871 to Lian; 20140091933 to Mohiuddin; 20140232530 to Stewart; 20140208559 to Stewart; 2013-0036780 to Valade; 20120007711 to Lehnbeuter; U.S. Pat. No. 7,576,654 to Ho; U.S. Pat. No. 7,921,524 to Maurer.
In one embodiment, a facemask is secured to a helmet via a dynamic magnetic detacher that comprises a field source arranged to provide a first magnetic field when power is applied to the field source and a magnet arranged to provide a second magnetic field, the magnet being movable from a non-detach position to a detach position by the first magnetic field, with the second magnetic field sufficient to unlock a security tag when the magnet is at the detach position.
In other embodiments, the facemask is secured to the helmet using a magnetic clamping device for securing a facemask attachment element to the helmet, with the clamp being movable between a locked position and an unlocked position when a keyed magnetic element affixed to the clamp is activated to provide a magnetic force. In certain embodiments the clamp is movable about a pivot point such that when the keyed magnetic element is exposed to the keyed magnetic force, the clamp pivots about the pivot point from the locked position to the unlocked position. The clamp may further comprise a locking region such that when the keyed magnetic element is exposed to the keyed magnetic force, the locking region pivots about the pivot point from the locked position to the unlocked position. Still other related embodiments employ a keyed magnetic element affixed to the clamp, where the keyed magnetic element has a magnetic polarity pattern and a facemask reversibly detachable element that includes a magnetic region that applies a keyed magnetic force corresponding to the keyed magnetic element to the keyed magnet element, the magnetic force moving the clamp from the locked position to the unlocked position. The facemask reversibly detachable element has at least a portion comprised of a magnetic material such that a capture magnet may be arranged to attract the portion of the facemask reversibly detachable element.
In still other embodiments, an application is installed on a mobile communication device, such as a mobile phone, via a first short-range communication when the facemask securing mechanism on a helmet facilitates the communication of a detachment command when a player or coach or emergency response individual sends the same to facilitate quick removal of the facemask from the helmet.
Such a system may comprise at least one electronic circuit configured to provide a unique identifier to an application installed on a mobile communication device via a first short-range communication to the facemask retaining element when the facemask is attached to the helmet. A receive a second short-range communication from the mobile communication device may be received that comprises a detachment command when the facemask is desired to be removed from the helmet to actuate a detachment mechanism in response to the detachment command. The first short-range communication may be a barcode communication or a near field communication and the electronic circuit may further be configured to decrypt the second short-range communication prior to verifying that the second short-range communication is intended to be processed. Moreover, the electronic circuit may further be configured to output an audio indication or a visual indication indicating that the detachment mechanism has been actuated. The electronic circuit may further be configured to automatically secure the facemask to the helmet when a pre-defined time period expires.
In certain embodiments, the facemask securing assembly includes a housing and a locking mechanism disposed within the housing, with the locking mechanism including a detaching element configured to unlock the facemask from the helmet, with the locking element further having a feedback element configured to generate haptic feedback when energized if the facemask securing assembly has been unlocked by the detaching element. Preferably the feedback element is a vibrating element or a visual indicator.
Other embodiments include a facemask/helmet detacher system that includes a field source arranged to provide a first magnetic field when power is applied to the field source and a magnet arranged to provide a second magnetic field. The magnet is movable from a non-detach position to a detach position when exposed to the first magnetic field. The second magnetic field is arranged to unlock a facemask securing element when the magnet is at the detach location. The system may further include an activation device that includes a processor configured to trigger power to be supplied to the field source. Still other embodiments include a facemask magnetic detacher having a magnet assembly that to provides a magnetic field sufficient to disengage a clamping mechanism within a hard plastic housing, employing first, second and third magnets, with the third magnet having a top surface substantially coplanar with a top surface of both the top surfaces of both the first and the second magnets, preferably including permanent magnets, such as an NdFeB magnet, a hard ferrite magnet, an SmCo magnet, and an AINiCo magnet.
Yet other embodiments employ a facemask release mechanism that consists of a multiplicity of permanent magnets in the form of a Halbach array disposed on a plane, with a highly magnetised top side of the release mechanism covered by a cover plate. The permanent magnets preferably include a self-contained frame magnet that is magnetised in an axial direction and has a first recess. Inserted in this first recess is a segmented magnet, wherein the individual segments are magnetised perpendicularly to the magnetization direction of the frame magnet and a second recess is left open, in which an axially magnetised magnetic core is inserted.
Other embodiments involve a more direct connection between the facemask bar structure and a quick release securing element, such embodiments involving an enclosing element that encircles or covers portions the facemask bar in a retaining fashion, which is then tightened by the rotation of the quick release lever. The quick release mechanism preferably has a further structural feature that connects directly to the helmet surface. In some embodiments, a screw or bayonet feature is employed to both tighten the structure around the facemask bar, as well as secure the facemask bar to the helmet surface itself.
To enable the desired quick release function in such arrangements (i.e. where the single quick release structure achieves both the connection of the facemask to the quick release device, as well as the connection of the quick release device to the helmet), the facemask encircling structure is constructed and designed in a fashion that permits removal of the facemask by physically pulling the facemask bar out of the structure. Thus, in some embodiments, the facemask encircling structure is comprised of two convex shaped members shaped to cradle the facemask bar therebetween, and thus, when moved into close relationship with the facemask bar is in such cradled structure, such as when the quick release screw is tightened. Several embodiments involve the ability to rotate the securing elements via a magnetically activated device, such that the facemask can be removed from the helmet by use of a device similar to that employed in retail establishments where a magnetic detacher system is used to reversibly attaché hard magnetic tags to clothing.
In still other embodiments, however, a simpler retrofit embodiment of the present invention involves the replacement of existing screws in helmets with a properly sized and configured quick release screw assembly of the present invention, thus providing a way to provide life saving, rapid removal of a facemask without the need for special tools, such as cordless screwdrivers, cutting tools, etc. Such a quick release assembly includes a screw body that has a pivoting head at one end, adjacent to a helmet contacting washer that when the screw is positioned on the helmet and tightened, contacts the exterior of the helmet. The other end of the screw, which is approximately just longer than the width of the helmet material through which the screw is passed through, has a blunt end that is designed so as not to abrade or injure a player's face or neck region, and is preferably smooth and flat, such that it is in close contact to the interior surface of the helmet when the screw is tightened.
A certain embodiment of the present invention involves the employment of a helmet having integral facemask securing elements that are securely positioned at places on each side and/or on the forehead regions of the helmet such that a facemask can be reversibly secured to the helmet by placing the facemask bar into, e.g. between the rotatable bar-shaped members, so that the facemask securing structures, upon rotation of such securing structures, results in the facemask being entrapped in a secure position on the helmet. Thus, when the rotating features are in a facemask bar receiving position, twisting or rotating of one or more of the rotating structures enables the securing structures to at least partially cover the facemask bar so that the portion of the facemask bar is largely covered by such structures and thus secured to the helmet. As described herein, such a helmet to facemask closure member can have a conformation such that once closed over the top of the facemask bar, the bar is frictionally forced against the floor of the slot opposite the closed member side of such securing structure. In such a manner, portions of the facemask bar are enclosed and securely held in place by the rotated members.
Still other embodiments employ a quick release lever as described herein in combination with existing helmet quick release mechanisms. For example, Riddell has a QR system that requires a separate tool to operate the quick release function thereof. An advancement provided by the present invention involves the modification of such system to structurally include a pivoting lever that can screw the threaded shaft into and out of engagement without the need for a separate tool.
In preferred embodiments, the face mask design employed comprises polyaryletheretherketone, PEEK. In other embodiments, it is a memory shape material, such as the PEEK Altera™ material. While still other lightweight, plastic or composite materials can be used to form the majority of a facemask, PEEK is superb material that has long established its durability, strength and protective capabilities in the medical device marketplace. Replacement of steel and heavy metal facemasks, especially for high school and younger football players, is especially called for, due to the morphology differences between such individuals as compared to pro-athletes who have more developed neck muscles. Youth and adolescent players have large heads on a slender neck and less strength-to-area for their neck musculature. The youngest subjects not only have a relatively large head on a relatively thin neck, but their neck is also weaker for the same cross-sectional area. Therefore, while youth and adolescent football players have comparable head size to reported mature norm values, their neck size, MOI, isometric force application, and peak resistive torque developed at the C7 vertebra are only a fraction of the corresponding mature norm values. Helmet mass comes from 3 areas (about a third each for the facial and mandibular protector, shell, and padding). One objective of the present invention is to reduce weight whilst maintaining protectivity.
Current helmet shells are made from polycarbonate or ABS plastic. These materials are selected mainly for their durability under repetitive impact loading. However, polycarbonate and ABS do not provide maximum energy absorption, as they absorb only 6% to 14% of total work energy during deformation. Moreover, it is an unfortunate truth that the shell thickness of youth helmets is a function of the reconditioning process, as reconditioned football helmets are sanded down after each season and their surfaces refinished to achieve the 10-year expected lifespan of a youth helmet. Hard materials like polycarbonate and ABS lack optimized energy absorption. In contrast, PEEK is a durable, softer material that can attenuate energy (lower peak acceleration with longer contact duration) during a head-to-head contact better than currently used polycarbonate or ABS helmets. Unfortunately, current commercially available designs all utilize rigid protector-helmet constructs, and lack the combination of features of a truly quick release facemask, with a PEEK construction and including a shock absorbing assembly to reduce the incidence of concussions and brain injury. If the present invention in these embodiments were implemented, there would be provided a lighter and lower profile helmet with increased energy attenuation. Added weight creates fatigue in the user and increases inertia to the head in collisions. As one of the heaviest portions of today's football helmets is the facemask, often mounted such that it extends considerably beyond the nose of the player, it is also important (e.g. to reduce the lever-like action caused by the facemask during a collision), to reduce the dimensions and weight of such facemasks. The facemask acts like a lever when being impacted and to minimize the same, certain embodiments of the present invention employ a facemask that is no more than two inches from the nose tip of a wearer, more preferably between about 1.5 inches and 1.8 inches of the nose tip.
The present inventors contend that oblique impacts present even longer impact durations and are the reason seemingly innocuous impacts cause increased incidences of concussion. As a direct teaching away from the market forces that seek ever harder and stronger helmets, one aspect of the present invention is directed to the employment of softer football helmets, specifically comprising PEEK, to enhance protection against both traumatic head and brain injuries. In other embodiments, a helmet employs structural components that are designed and adapted to slide relative to each other, such as via a shock absorber assembly, providing impact force energy dissipation. One objective is therefore to achieve impact force attenuation sufficient enough to prevent concussive brain injury or chronic traumatic encephalopathy (CTE).
Yet another feature of certain embodiments of the present invention relates to provision of one or more indicators of prior structural impacts to the helmet. Such indicators can be employed to permit a player and coach to later assess such impacts to determine whether one or more recent impacts to the helmet deserve further scrutiny as to the player's physical well being after experiencing such impacts. Such indicators, which can be communicated directly to smart phone devices, analyzed via an injury assessment program, etc, and can thus assist coaches and players in deciding how best to protect the athletes from experiencing brain injuries sought to be avoided. After an accident protective helmets often times appear to be intact outwardly but because they have had to absorb large amounts of energy, they may not be. In various embodiments of the present invention, an indicator is provided that discerns whether the helmet has recently experienced one or more of a linear, translational or rotational energy that could potentially be detrimental to the wearer of such helmet; that records the duration, severity and/or number and degree of impact events so that proper player participation and safety can be assessed with objective criteria.
In addition to football, there are many human activities that, due to the size and speed of the participants (and their respective competitors) coupled with a more injury-inducing environment, have increased the likelihood of serious brain injury. While the present disclosure admittedly is focused on a football helmet, one of skill in the art will appreciate the teachings as applied to other sports and activities where helmets are employed, e.g. hockey, baseball, tank operator, race driver, snow mobile operator, motorcycle operator, and the like. In all of these contexts, one objective of the present invention is to attenuate an impact force in a manner sufficient enough to prevent concussive brain injury or chronic traumatic encephalopathy (CTE).
Another aspect of the present invention relates to the easy removal of a facemask under several conditions, including the unfortunate event of an injury to a player where the removal of the face mask must be performed quickly and without further risking injury to a player's spine by the unnecessary further manipulation of the neck and spinal region. Today's helmets often require one or more tools to dissociate a facemask from a helmet and there is concern that emergency responders may not be properly trained in the removal of such facemasks and/or may lack appropriate tools to remove such facemasks, when a player is visited on a field of play, especially at night and under pressured group situations. One aspect of the present invention relates to the provision of a helmet that does not require any specialized tool, nor even a screwdriver, to quickly remove the facemask form the helmet. Thus, one aspect of several embodiments relate to facemask retention elements employed to reversibly attach and remove a facemask from a helmet.
Preferably the complete extraction of the facemask from the helmet is achieved in less than 30 seconds. This may be accomplished in several of the embodiments disclosed herein via the simple twisting of locking levers that secure the facemask to the helmet. The present state of most existing helmets having associated facemasks requires that a set of extraction tools be available so that proper and efficient removal of the facemask can be achieved. Such tools are often not available on a moment's notice, nor are they always carried by emergency responders, let alone a football coach. Such tools may presently include an anvil pruner, a cordless screwdriver, an FMextractor, a trainer's angel, etc. Effective use of some of these tools is dependent upon the hand strength of the individual using such tools. Often there is a fair degree of manual dexterity required to quickly sever or disconnect the facemask joining elements from the helmet in a fashion that does not cause still further trauma to the player. The use of necessary tools to remove the facemask is rendered even more difficult due to the interference experienced by a player's shoulder pads, thus further extending the critical time components involved in providing care for an injured player without him/her suffering additional pain and injury. Employing the present invention, however, there are one two or at least three facemask securing points on the helmet that employ a truly quick release facemask cage-connecting system to extract the facemask in less than 30 seconds. With the present invention, a person detaching such connection points need not have familiarity with the more complex facemask removal tools and systems now used in order to quickly achieve detachment of the facemask. Everything that one requires to rapidly remove the facemask is present on the helmet itself.
It is also preferable to fully and completely extract the facemask from the helmet, rather than merely retract the facemask, e.g. by detaching the lateral connection points and leaving the forehead connector in place, which in some embodiments would permit pivotal rotation of the facemask without detachment fully from the helmet. One particular advantage of certain aspects of the present invention is that existing helmets can be retrofitted with the easily detachable facemask connection and securing mechanisms disclosed herein. Thus, while the other preferred embodiments of the invention involve the use of structural and functional components to reduce the injuries suffered by players wearing helmets (e.g. PEEK, shock absorbers, etc.), the facemask connector elements of the present invention can be employed with a wide variety of past, present and future helmets. In particular, the facemask connecting structures of the present invention can readily be used to retrofit existing helmets.
In a particular embodiment, a rotatable, facemask retaining feature is employed to achieve rapid reversible engagement between a helmet and a faceguard. In one form, a facemask connecting structure is provided which has a rotatable member that is designed to receive and to restrain a portion of a facemask bar. Once a facemask bar is placed inside a slot in the center of the rotatable member, the rotatable member can be turned or rotated to a closed position, whereby the facemask portion is secured via one or more retaining members that rotate to fit over the top of the facemask bar portion. For example, a simple twisting motion can be employed to reversibly secure a facemask to a helmet. In one embodiment, the rotatable member is rotatable in a first direction (e.g., counter clockwise) relative to a body of the facemask securing element for securing or locking the facemask bar portion within the slot, and for rotating in an opposite direction (e.g., a clockwise direction) relative to the facemask securing element body for unsecuring or unlocking the facemask so that it is substantially unrestrained from exiting the slot. To facilitate twisting of the elements, various finger conforming features can be provided on the rotatable elements such that a player, a coach or an emergency responder can readily contact the rotatable members and rotate them into an unsecured position.
The rotatable member may include one or more slot coverable extensions of various shapes and sizes and such extensions can be rotated into (or more accurately—over the top portion of) the slot opening. A facemask portion (e.g. a section of a bar of a facemask near the sides of the facemask that correspond to the opposite sides of a football helmet.) The facemask bar can be inserted into the opening of the rotatable retention structure when in its open position and the retaining overlying structures can be rotatably moved to secure the facemask bar within the slot. Such facemask bar can also be removed from the facemask securing element slot via this opening via simply turning the structure so as to present an open slot where the retaining member(s) of the bar have been moved (e.g. rotated) out of the retention position. In particular, such facemask retaining extensions, when rotated to occlude at least a portion of the slot opening, thereby preventing a facemask bar that is residing in the facemask securing element slot from exiting therefrom, and when rotated out of the slot opening, these extensions do not prevent the facemask from being readily removed from the facemask securing element slot. In one or more embodiments, such coverable extensions may be C-shaped, bar shaped or any other shape that accomplishes the goal of permitting the facemask bar to be placed into the open slot, and then retained in such slot via rotation of the retaining element to secure the facemask in such slot. Such slot coverable extensions may be straight or bar shaped, such extensions may be parallel to one another, or such extensions may be generally irregularly shaped. Additionally, such extensions may include one or more notches that can be accessed by a tool for rotating the rotatable member. Preferably, however, the need for a separate tool to rotate the securing feature, and thus reversibly engage the facemask to the helmet, is avoided by providing topical features that facilitate manual twisting/rotation of the closure elements. Preferably, a manually twisting feature is provided such that the reversible securement of the facemask to the helmet can be achieved.
In one or more embodiments, the rotatable member may include two opposing columns attached to opposing sides of the circumference of the cylindrical portion, wherein such columns extend away from their attachment to the cylindrical portion such that they extend out of the cylindrical recess for attaching to the one or more rotatable extensions described herein. The attachment of the columns to opposing sides of the cylindrical portion allow for the insertion of a portion of a facemask between the columns so that the portion can reside in the retention slot. More specifically, although the columns extend above the side walls of the slot, the columns do not interfere, regardless of the rotation of the rotatable member (relative to the body). In particular, the columns may rotate (when the rotatable member rotates) about a central axis of the cylindrical recess, and rotate within a confined angular range.
In one or more embodiments, the rotatable member and the cylindrical recess may include various features for rotatably securing the rotatable member within the cylindrical recess to that a facemask is substantially prevented from disengaging from the helmet. Such features may include mating combinations of projections and recesses such that a projection (or recess) may be provided on the cylindrical portion and/or the columns for mating with a corresponding recess (or projection) of an interior wall of the cylindrical recess for locking the rotatable member therein while also allowing it to rotate therein. Note that such mating projections and recesses may be, respectively, ridges and grooves.
Also, note that the cylindrical recess may include additional features or mechanisms that prevent the rotatable member from freely rotating within the cylindrical recess. In one or more embodiments, a circular cross section (perpendicular to the central axis of the cylindrical recess) may be slightly out of round in various places to frictionally engage adjacent surfaces of the rotatable member for assisting in maintaining the slot coverable extensions in one or more predetermined orientations relative to the slot. In one or more embodiments of the facemask securing element, the cylindrical recess and the rotatable member may include interlocking elements that substantially restrict the rotation of the rotatable member to discrete and predetermined angular orientations about the central axis. Such interlocking elements may provide a ratchet mechanism, or alternatively interlocking shapes wherein a first shaped element (e.g., on the cylindrical portion of the rotatable member or a wall portion of the cylindrical recess) mates or interlocks with compatibly one or more shaped elements (on the other of the rotatable member or a wall of the cylindrical recess) dispersed at discrete angular positions about the central axis for restricting rotation of the rotatable member from one of these positions to another. Note that such interlocking elements may allow the rotatable member to rotate in both a clockwise and a counter clockwise direction when a sufficient predetermined directional force(s) is applied for disengaging the interlocking elements from a first position and interlocking at a second position.
In one or more embodiments, the strength transmitted to the free ends of the slot coverable extensions for covering the slot is partially derived from the circular shape of the attached cylindrical portion and the intimate fitting of this cylindrical portion of the rotatable member within the cylindrical recess. In one or more embodiments of the slot coverable extensions, the side thereof facing the facemask securing element body may include features or elements for engaging with the facemask securing element body adjacent the slot for assisting in holding such extensions in a “closed” position (i.e., where the extensions span or at least partially cover a width of the slot opening thereby preventing, e.g., a facemask bar from exiting the slot), or in an “open” position (i.e., where the extensions do not span or interfere with the slot opening in a manner that would prevent a facemask bar from entering or exiting the slot). In particular, such an underside may include one or more protrusions for mating with a corresponding depression in the facemask securing element body adjacent the slot.
In one or more embodiments of the facemask securing element, the slot coverable extensions can be configured so that in at least one rotatable position such extensions cause or induce retention of the facemask in the slot to be “actively” held in place within the slot. Preferably, the rotating retention features described herein are relatively flush with the exterior surface of the surrounding helmet, such that the risk of disengagement of the facemask from the helmet due to an impact collision, is minimal.
The rotation of the covering members over the top surface of the facemask bar can thus force the facemask portion into contact with the surfaces of the slot (e.g., a floor of the slot) with sufficient force to induce frictional forces therebetween such that such frictional forces effectively inhibit movement of the facemask, including in a direction along the length of the slot. Additionally/alternatively, the slot coverable extensions can be configured so that in at least one rotatable position such extensions cause or induce a portion of the facemask in the slot to be “passively” held in place within the slot. The facemask securing element disclosed herein may be comprised of metal, plastic or ceramic or combinations thereof although equivalent materials also may be used. Metal injection molding (MIM) technology can be used for manufacturing components of the facemask securing element, including the facemask securing element body which provides features for rotatably securing the rotatable member to the helmet. The size of the structures will be somewhat dependent upon the size of the facemask bars at issue, but as there is some consistency in the present football facemask field, the rotatable retention elements are sized to accept such conventional sized bars within the slot of the retention device.
Restraining wedges attached to the slot facing side of each of the extensions may be employed to exert a force(s) for pressing the facemask portions against the slot floor.
Cover extensions (e.g. that rotate to entrap the facemask portions) may be irregularly or uniformly shaped to be compatible with a separate tool (e.g. a screw driver) or a ratchet for grasping the rotatable member for rotating the rotatable member. Thus, while certain embodiments of the present invention are directed to assemblies where a separate tool, such as a screwdriver, is not required, other embodiments include the prospect that a screwdriver of similar tool (even if it is a coin that can be used to insert into a groove to effect rotation of the rotating enclosure elements described herein) may be used to facilitate reversible securement of the facemask to the helmet. An increased length of the slot being covered by the extensions assists in maintaining a desired alignment of the facemask portions to the bracket.
The columns of the rotating elements may also include a locking tab for engaging (and entering into) notches defined by pairs of closely spaced ridges distributed about the circumference wall of the recess. Thus the locking tabs act to further restrict the rotation of the assembly after it is in a closed position, entrapping the facemask portion in a secure arrangement with the helmet.
In still other embodiments, the helmet can further employ sliding materials as part of the helmet construction, thus addressing the impacts encountered in contact sports by having the impact energy absorbed by the sliding shells. Incorporated herein by this reference is U.S. Pat. No. 4,307,471 issued to Lovell, which discloses a protective helmet assembly made up shells that slide relative to each other providing impact force energy dissipation via lost motion.
Another feature of various embodiments of the present invention involves the strong correlation of concussion with translational acceleration as the primary measure for assessment of the performance of helmet protection systems. Thus, in certain embodiments of the invention, both translational and rotational acceleration are addressed to limit injury to a player. Another aspect of certain embodiments is the importance of addressing injuries caused by the face-mask being impacted at an oblique angle, with the majority of contacts occurring below the head's center of gravity. Certain segments of the helmet show higher risks for concussion, particularly low on the side and back and oblique to the face mask. The particular facemask shock absorbing configurations and the use of PEEK as the material for facemasks (e.g. the weight reductions and impact attenuation achieved via the present invention, is believed to substantially reduce the injuries attendant to the collisions inherent in many contact related sports.
The present invention generally relates to impact energy attenuation, and particularly to facemask construction, design and attachment systems and assemblies intended to reduce trauma resulting from impacts to parts of the body, such as the head. While the present invention relates specifically to football helmets, it should be understood to be applicable and directed to other fields in the general personal protection field. As such, as one will appreciate, it has wide application and can be used in every kind of helmet from baby helmets to military helmets, and for all athletes at risk of concussion and head injuries such as football players, cyclists, skiers, snowboarders, skateboarders, hockey players, baseball players, lacrosse players, boxers, soccer players, equestrian/horse-riding sports, such as polo and horse racing, as well as motorcycle and race car drivers.
In other embodiments, certain aspects of the present invention relate to a superior helmet construction, which in concert with one or more of the features set forth herein (e.g. the quick release facemask assemblies, shock absorbing assemblies, armadillo-like surfaces, etc.) one is able to construct a helmet that has superior and unprecedented safety attributes, especially as it relates to reducing the occurrence of concussions. In other words, conventional helmets lack various structural and functional aspects of the present invention, including but not limited to the use of lightweight helmets and facemasks, shock absorbing systems that connect facemasks to the helmet, the use of quick release threaded connectors between the facemask and the helmet, unique helmet constructions that employ various features derived from nature, including particular preferred helmet designs that incorporate structural features of an armadillo shell (particularly the South American species having three rings), the use of specialized shock absorbing polymers and composites (such as Sorbothane®) in conjunction with other structural armadillo-derived features; and quick release systems that either include rotatable self-ligating features that reversibly attach a facemask to a helmet, and/or a magnetic locking system that employs structures and features derived from theft-prevention systems common in the retail clothing industry.
Various embodiments of the present disclosure are set forth in the attached figures and in the detailed description as provided herein and as embodied by the claims. It should be understood, however, that this Summary section may not contain all of the aspects and embodiments claimed herein. Additionally, the disclosure herein is not meant to be limiting or restrictive in any manner, and is directed to be understood by those of ordinary skill in the art. Moreover, the present disclosure is intended to encompass and include obvious improvements and modifications of embodiments presented herein. Additional advantages of the present disclosure will become readily apparent from the following discussion, particularly when taken together with the accompanying drawings.
In certain embodiments, one can select the materials employed to address desired impact forces encountered in a given sport activity. Thus, in addition to one or more springs of certain and predetermined strengths, plastic and rubber materials of partiulcar construction, composition and amount can be used to provide the desired shock absorption abilities desired. In several embodiments, it is preferred not to employ springs as the shock absorbing elements, but to instead rely upon an elastomer to accomplish such function, as the reduction in weight, the avoidance of metal parts, etc. is sometimes desired. A combination of these reversibly compressible materials and elements can be employed to address impact and collision events such that damage to a person's head and brain are minimized.
Certain embodiments employ an integral surface of a helmet that comprises an elastomeric cellular, foam material having an integral inner skin and an integral outer skin with physical characteristics which cause it to absorb energy from impact with another object, and rapidly and fully recover to absorb energy from the next impact, thereby reducing the potential for injury to the wearer of the helmet. In certain embodiments, padding of the helmet comprises expanded polypropylene (EPP), which may comprise a lightweight amalgam of foamed poly propylene beads, molded into a semi-rigid structure. Impact energy may also be diffused by employing a closed cell foam material.
In certain embodiments, the face mask attachment is shock absorbing and absorbs directional forces to collapse partially to reduce collision impact. Suitable shock absorption assemblies can employ a variety of shock absorption materials, including air, liquid, springs, telescoping constructs, etc. which can be used alone or in combination to function to cushion blows.
Certain embodiments include sensors to monitor translational movement of a player's head to assess whether certain impact collisions warrant injury and concussion concerns. While electronic sensors can be used, they tend to increase the cost and complexity of helmets, which is undesirable at least for little league and high school sports programs. Thus, in one embodiment, a color change agent is employed such that the facemask or helmet, particularly the interface of the two, includes such an agent to reveal whether that portion of the helmet has experienced severe impact, and thus, may be too weak to withstand additional impacts, and/or if a particular predetermined level of impact has occurred. This assists coaches in determining whether a player has been hit or impacted by a force of greater than a certain amount, thus aiding in determining whether the player should cease play at that moment. In other embodiments the securing mechanism that attaches the face mask to the helmet is comprised of PEEK and is fashioned in a structural manner such that it will stretch, bend or otherwise conform upon being hit.
In one embodiment, the frame of the face mask is provided with at least two telescoping sections, preferably positioned such that a frontal force to the face mask will cause the face mask telescoping portions to compress, such that the telescoping elements will slide within each other in a nesting arrangement. Preferably a cushioning element is employed that returns the face mask structure to its prior to impact position. Such an element can be, for example, rubber, plastic having desired rebound capabilities, foam, an air cylinder, a liquid filled reservoir (e.g. one that when impacted, can then squirt out an amount of liquid to permit the face mask structure to partially collapse upon an impact to the face mask.
When the connections between the face mask and helmet shell are rigid, stresses on the facemask are transferred directly to the helmet shell and can deform or crack the helmet shell which again can result in an injury to the athlete wearing the helmet. Thus, in several embodiments a shock absorbing mount is employed for the facemask comprising a first attaching element adapted for mounting on a helmet shell, a second attaching element adapted for mounting on a helmet face mask and having an extension portion movably engaged with the first attaching element for plunger-like reciprocation relative thereto, and a shock absorbing resilient element held between opposing surfaces of the first and second attaching elements.
To reduce the need to provide extensive disclosure in this application, but to provide adequate written description of the various devices and methods encompassed by the numerous embodiments of the present invention, various patents and patent publications are incorporated herein in their entireties by this reference. Several of such patents are directed to shock absorbing systems that can be employed; others to rotating securing assemblies, still others to quick release assemblies and further ones to various helmet, padding and facemask designs. With the guidance provided herein, one of skill in the art will appreciate the vast scope of different combinations that can be achieved and that are intended to be encompassed by the various embodiments of the present invention. These include: 20120297525 to Bain; U.S. Pat. No. 8,766,798 to Howard; CA 2288309 and U.S. Pat. No. 6,292,954 to Conchur; U.S. Pat. No. 8,756,719 to Veazie; 20140201890 to Kelly; 20140090155 to Johnston; 20130298316 to Jacob; U.S. Pat. No. 3,900,897 to Dunning; U.S. Pat. No. 3,707,59 to Zide; U.S. Pat. No. 5,708,988 to McGuine et al.; Shih, US Patent publication 2007/0151003; US patent publication 20080163410 to Udelhofen; U.S. Pat. No. 4,370,759 to Zide; 20140101829 to Witcher; U.S. Pat. No. 4,028,743 to Christensen; 20070151003 to Shih; U.S. Pat. No. 7,607,179 to Shih; U.S. Pat. No. 8,146,178 to Maddux, et al.; U.S. Pat. No. 8,079,610 to Winefordner; 20060127167 to Wu-Hong; 20130247285 to Bartsch; 2009/0031479 to Rush, III; 2004/0074283 to Withnall et al., U.S. Pat. No. 6,879,932 to Baudou et al.; 2013/0086733 to Szalkowski; 2014/0081601 to Zhang 2014/0133932 to Davies; U.S. Pat. No. 8,636,439 to Jaouen; 2015/0164174 to West; 2015/0173666 to Smith; U.S. Pat. No. 7,254,843 to Talluri; 2011/0203024 to Morgan; 2012/0017358 to Princip; 2014/0215693 to O'Gara; U.S. Pat. No. 9,032,558 to Leon; 2015/0101899 to Russo; U.S. Pat. No. 8,046,845 to Garcia; U.S. Pat. No. 6,131,196 to Vallion; 2011/0056004 to Landi; U.S. Pat. No. 8,938,818 to Ide; 2014/0208486 to Krueger; 2014/0068843 to Wegener; 2014/0196198 to Cohen; 2015/0107005 to Schneider; U.S. Pat. No. 8,844,066 to Whitcomb; and 2013/0025037 to Turner.
One embodiment is directed to a shock absorbing facemask attachment assembly for a helmet comprising a facemask, at least one compressive, shock absorbing assembly, such assembly having a longitudinal axis extending from the outer surface of the helmet, with at least one of the compressive elements comprising the shock absorbing assembly maintained within a housing and in contact with the facemask, with the housing reversibly attachable to the helmet by a quick release mechanism, such mechanism selected from the group consisting of i) a rotatable, pivoting lever, on one end of a shaft, and a threaded end on its other end, the threaded end being adapted to receive a helmet contacting nut, such that the nut is shaped so that it has a non-abrasive surface on an interior helmet-wearer side; and ii) a rotational retaining mechanism having two opposing bar-like structures rotatable to reversibly secure a bar associated with a facemask. Certain embodiments also include a device for use in a system for monitoring protective headgear, preferably using a wireless device employing a sensor module coupled to the protective headgear that generates sensor data in response to an impact to the protective headgear device when the device interface is coupled to the monitoring device.
PEEK is a semicrystalline thermoplastic with excellent mechanical and chemical resistance properties that are retained to high temperatures. Because of its robustness, PEEK is used to fabricate items used in demanding applications, and displays certain shape memory behaviors when mechanically activated. In one embodiment, lighter high-tech materials, such as PEEK, are used to construct both helmets—as well as the face mask. In addition to material composition, in certain embodiments, design and overall shape and dimensions of the helmet/facemask assembly is important to ensure player protection form brain injury. Thus, the ratio of the face mask and helmet dimensions is important to consider when evaluating the overall shape and function of the football helmet in terms of how it can be designed to reduce the incidence of injury.
In certain preferred embodiments, the features included on a helmet would include:
A facemask configuration that limits the lever-like attributes of the facemask in relation to the helmet, such that when damaging facemask collisions occur, there is less of a likelihood of damage to a player due to the reduced length of the face mask as measured from its exterior distance away from the face. The combined use of these aspects presents a helmet that is lightweight, force-absorbing head protective device that is less prone to causing injuries to a player due to a reduced side profile (e.g. less leverage due to a confined side aspect), and thus presents a helmet having superior safety characteristics as compared to any existing helmet on the market. In terms of addressing contact forces encountered in contact sports, such as football, not only is the claimed helmet designed so as to reduce the chances that injuries will occur, but when injuries do happen, the quick release features of the helmet design permit far more rapid medical attention to a player.
With respect to the quick release features described herein, the release lever can be accessed by either the player themselves, or an attendant coach, so as to have the facemask completely removed within 30 seconds of first attempting such a removal operation. In comparison, the best average times for removal of facemasks using Riddell's so-called “quick release” system is 33 seconds. Preferably, using the preset invention quick release design, the facemask can be entirely removed from the helmet in less than 25 seconds, even more preferably in less than 20 seconds, more preferably still in less than about 15 seconds, and most preferably in less than about 10 seconds. This reduction in time to remove a helmet—especially without the necessity of any separate tool, such as a screwdriver, etc. is critically important when it comes to administering care to an injured player and in assessing how best to address his/her injuries.
The disclosure herein has been describes preferred embodiments of the invention claimed hereinbelow; however, other changes and modifications to the claimed invention may be made which are still contemplated within the spirit and scope of the present disclosure.
The foregoing disclosure has been provided for purposes of illustration and description. This disclosure is not intended to limit the invention claimed herein below, and various embodiments thereof. Variations, embodiments and modifications will be apparent to those skilled in the art and are intended to be within the scope of the following claims.
Particular embodiments employ a quick release device that is similar in many respects to devices employed in the bicycle filed, often referred to as a quick release skewer. In the context of helmets, however, the skewer portion is substantially shortened so that it spans the distance between the interior and the exterior of a player's helmet. The shorter skewer is run through a pre-made aperture in the helmet in a position where most conventional helmets also have an aperture for the connection point between the helmet and the facemask on either side of the helmet. The exterior of the quick release has a pivotable lever that pivots about a cammed surface such that closure of such member to be in a position substantially flush with the helmet exterior, effectively locks the quick release device in a secure position, with the lever not only being pivotable, but rotatable around a threaded portion of the skewer such that the threaded distance between each end of the skewer and the pivoting lever is shortened, thus tightening the unit to the helmet. Pivoting of the pivotable lever after desired rotations are made is achieved via moving the lever form a position where the lever is substantially perpendicular to the surface of the helmet side, to a position where the lever is pivoted flat against the side of the helmet. In certain embodiments, the helmet has a slight cavity into which the pivotable lever can reside, thus lessening the chances that such lever would be inadvertently pivoted outward due to collision with a third object.
A significant advantage afforded due to use of the above described quick release pivotable lever is that no additional tools are required to reversibly engage and disengage a players facemask from the helmet. As one of the major concerns at the present time is that necessary tools are available by the coach, emergency responsive teams, etc. when a player suffers an injury due to a helmet collision, the avoidance of a requirement for any such tools represents a considerable advance in the art. To remove the face mask of a downed, injured player in a time period that compares well with present day removal schemes—which require some tool to perform such an operation (e.g. a screw driver, a cutting tool, a pin that is specially adapted for insertion into a quick-release holed structure—such as in the Riddell QR helmet)—one need only to flip the pivotable lever from its flush-to-the-helmet position, outward so that the lever can be manipulated. In some embodiments, the rotation of the lever about the axis of the screw structure associated therewith is sufficient to cause the loosening of the connection between the helmet and the facemask, with particular embodiments having the unthreading of the lever from the quick release assembly proceed until the lever and attached screw structure is disassociated with the nut element residing on the inside of the helmet. Such an operation of flipping the lever, rotation of the lever several times and disassociation of the connection point that connects the helmet and the facemask can preferably be achieved in literally less than 5 seconds, but even to the novice caregiver of such player, can be performed in less than 30 seconds (which is faster than the average fastest detachment time achieved using prior art so-called “quick release” devices. One can certainly perform the lever release and rotation operation using both hands such that both sides of a player's helmet can be addressed simultaneously and without the need for any separate tool to achieve disengagement.
Incorporated herein by reference are the multitude of quick release mechanisms that have been employed in the bicycle filed to achieve a similar goal of securing fastening various components of a bicycle together, such as adjustment mechanisms for the seat height, the connection of a wheel to the forks, etc. One of skill in the art, with the guidance provided by this disclosure, can readily adopt such structures to serve the purposes of reversibly and securely connecting the portions of a facemask to a player's helmet using such quick release devices. For purposes of illustration, the present inventors incorporate by reference U.S. Pat. Publication No. 2013-0334871 to Chang directed to a quick release lever for this purpose. A quick-release skewer and a quick release seat post clamp modified to be used for a helmet connector, comprises a shaft having threaded ends, a nut on one end, and a camming mechanism on the other end. Still other embodiments include the use of a second lever having a cam surface and an opening on one end and a lever portion on an opposite end, wherein the opening of the second lever engages a second portion of the pin.
In certain embodiments employing the described quick release lever mechanism, it may be desirable to further include a means for retaining the lever in a position that is close to the helmet exterior, such that the lever does not inadvertently pop open and away from the helmet during contact of the helmet with another object, such as an opponent's helmet. Various securement mechanisms can be employed for this purpose, including but not limited to magnetic attraction between the lever and another metallic or magnetic component fixed to the helmet region that is adjacent to the lever when in its closed position. A small elastic member, such a rubber or plastic loop, can also be used, which is fixed to the helmet and that is adapted to encircle the end point of the lever to hold it in a closed position, nearly flush with the helmet. The forces required to loop the lever in the elastic member is minimal, as it must merely pull the lever or hold the lever in the closed position, and thus, collisions will only cause the lever to possibly attempt to flip upwards, only to encounter the countervailing elastic forces that retain the lever in the flush helmet position.
Other embodiments of the invention relate to the combination of a quick release feature on at least one, preferably two and most preferably three or more facemask connection points on the helmet, together with a shock absorption assembly. For example, a shock absorbing assembly similar to that described by U.S. Patent publication No. 20080163410 to Udelhofen; (European Pat. No. EP 2223619); and U.S. Pat. No. 7,607179 to Shih, all of which are hereby incorporated herein by this reference, is used on each side of a helmet to reduce the impact of collisions. Such assemblies are operably associated with a quick release assembly such that a player can mount his/her facemask to their helmet in a quick fashion and enjoy the benefits of having a shock absorbing facemask assembly, in addition to having the ability of having such a facemask removed and detached via the quick release features described herein. The prior art is dived of such a combination of features, with shock absorbing structures described as being securing connected to the helmet in a fashion such that traditional removal techniques are required, e.g. screws what required a screwdriver; cutting tools, etc., to detach such facemasks from the helmet. One of skill in the art, however, will appreciate that various other shock absorbing structures and assemblies can be used together with the multitude of quick release features that exist, such that a player is afforded, for the first time, a helmet that not only absorbs impacts (e.g. through a variety of shock absorbing structures and components) that would otherwise be communicated and experienced by the player's brain, and also a facemask connection system that provides for the removal of the facemask in a time shorter than the best currently available times for facemask removal, i.e. an average of 33 seconds or more.
In a particular embodiment, the forehead region of the facemask connection to the helmet comprises a facemask retaining structure that does not involve any moving parts, but rather, relies upon the simple manipulation of the facemask (e.g. once released from its connection points on either side of the helmet) to disengage the facemask entirely from the helmet. Such a device is depicted and described in U.S. Pat. No. 8,146,178 to Maddux, which is hereby incorporated by this reference. One will appreciate that in other embodiments, a quick release assembly as described herein can be used for the forehead helmet connection for particular facemasks, as well as in combination with a shock absorbing structure affiliated therewith.
In other embodiments of a quick release assembly, a rotating assembly that has a first open position (e.g. for receiving a facemask bar structure in a slot of the assembly) and a closed position (e.g. whereby the rotation of the quick release assembly mechanism entraps the facemask bar within the assembly, effectively providing a rotating top via which the facemask is held within the slot. Incorporated herein by this reference is U.S. Pat. No. 8,678,818 to Dupray, which, while directed to an orthodontic self-ligating bracket, has structural and functional components that the present inventors appreciated, for the first time, could be employed to achieve the quick release functions, desired in the disparate area of sports helmets, such as football helmets. In certain embodiments, it is possible to mix-and-match various quick release assemblies as described herein so as to achieve desired structural and functional designs. Thus, for example, a quick release assembly similar to the structure described by Dupray et al., may be employed for the forehead region of a helmet, while the quick release assemblies that are more similar to bicycle quick release skewers may be employed for the side connection points of a facemask to helmet. It is also possible to employ the static facemask device as described in Maddux, U.S. Pat. No. 8,146,178, on the side of a helmet, rather than as envisioned by Maddux as solely for use on the forehead of a helmet, such that a player may simply connect his facemask first to one side of the helmet via the Maduxx assembly, rotate the facemask to that it is in engaging position with either the opposite side of the helmet—which may employ one or more of the quick release assemblies as described herein, or alternatively, another of the quick release assemblies may be provided in the forehead region of the helmet. As there is a desire for lighter weight helmets, the ability to provide for at least quick release of facemask functions while maintaining the weight and complexity of structures for such purpose, is an important objective. Thus, as the connection device described in U.S. Pat. No. 8,146,178 to Maddux has no moving parts and affords detachment of a facemask once the opposite side of the helmet is freed from engagement (e.g. via the sight twisting of the facemask out of engagement with the upward and downward turned engagement sections of the Maddux device, one preferred embodiment of the present invention, especially when just two (rather than three or more) connections points between the helmet and the facemask are involved, is to provide just one pivoting lever quick release assembly on one side of the helmet, thus reducing weight, providing for even faster detachments of a helmet, and also avoiding possible inadvertent release of the quick release assemblies during impact of the helmet with a third object. One objective in removing a facemask is to create as little or no movement of the player's head and to finish the facemask removal procedure in as short a time as possible. This is made possible by employing one or more of the features as described herein.
In other embodiments, more than one of the rotating enclosure assemblies (e.g. larger in size than the Dupray, et. al constructions and sized to accept a face mask bar portion so that the two cover elements that are rotated between an open and closed configuration, act to entrap the facemask portion, locking the facemask portions in engagement, thus reducing the prospect that unintentional disengagement would occur due to the redundancy of the rotating entrapment assembles. In a preferred embodiment, at least two of such assemblies are employed, and in still other embodiments, three or more.
It will be understood that the quick release assemblies, including but not limited to the bicycle-type quick release mechanisms and the large version of the orthodontic self-ligating devices described herein, can be and preferably are constructed of a relatively light weight plastic so that the weight of the helmet is kept to a minimum. Of course, such elements can be constructed of metal materials to the extent such weight concerns are not paramount.
In a particular embodiment, where a facemask has three connection points to a helmet, the forehead connection point comprises a bracket that has no moveable parts, such as the Maddux device described herein. The opposing sides of the helmet have a quick release assembly selected from the group consisting of a rotatable element that accepts the facemask bar portion such that once the facemask portion is fitted into the slot, the cover members are rotated into a closed position, whereby the facemask bar is entrapped by the cover members, thus retraining the facemask portion to the helmet. The cover members can be comprised of steel or hardened plastic, but are sufficiently robust so that the facemask is held firmly in place to the helmet, and yet the facemask can be readily removed from the helmet in the event of an injury to the player wearing such helmet/facemask.
In other embodiments, PEEK is employed as the material that comprises a substantial majority of at least the facemask portion of a helmet construction. PEEK is well known in the medical device industry as a reliable, sturdy, durable material that is biocompatible and resilient, such that many orthopedic implants are constructed of PEEK due to its resilience and ability to absorb shocks without adversely affecting its integrity. Thus, while any suitable plastic having the desired strength, durability and impact resistance may be employed in various embodiments of the present invention, PEEK is believed to be particularly preferred due to its long history of excellent physical and functional capabilities.
Still other embodiments employ a magnetic clamping system 19 to reversibly secure a facemask to a helmet. Such connection systems have been employed in other fields, for example, in anti-theft devices, but have not previously been used to secure facemasks to helmets. Magnetic detach mechanisms and assemblies 21 can thus be employed as they are readily available and relatively inexpensive as they are ubiquitous in many retail establishments and are used to attach to clothing. The strong magnetic field from the magnetic detachers 21, often caused by a rare earth permanent magnet that is used to attract a spring piece in a magnetic locker, can reach to about 4000-6000 Gauss. One of skill in the art will appreciate the various ways in which a magnetic securement assembly 19 can be positioned on a helmet so as to enable a detach mechanism to be used to quickly achieve detachment of the magnetic securement/connection system so as to release a facemask from a helmet.
In various embodiments, an attaching mechanism for the facemask to a helmet is releasable by applying a magnetic detacher 21 to magnetically pull up a metallic spring and release a locking pin. In certain embodiments, applying a magnetic force pulls a metallic spring away from a first position to detach a pin from a second locking position. Preferably, the pin used for attaching and locking has a smooth surface without a groove (although grooved pins, cylinders, posts, etc. may be employed)—and preferably the post used is thicker (e.g. has a greater diameter) than the posts employed in retail stores, where pins having relatively sharp points are employed. The strength of attachment can be conveniently adjusted by simply changing to a spring having a different pressing force. In a preferred embodiment, the attaching-detaching mechanism includes a locking mechanism for locking to an attachment pin or cylinder. The locking mechanism is pressed by a pressing spring for tightening the locking mechanism to lock the attachment pin. The pressing spring is releasable by a magnetic pulling force to release the locking mechanism to detach the attachment pin from the locking mechanism. Several of the patents incorporated herein by reference in their entireties are directed to the myriad of ways one can construct suitable magnetic locking systems and assemblies 19 that can be used in various embodiments with a detacher tool 21 to achieve desired reversibly secured facemasks to a helmet.
In certain embodiments, the facemask (or device securing the facemask to the helmet) is removed by means of a magnetic support tool 21. In one embodiment, a locking system is applied which comprises a retaining part made of magnetic material that is adapted to be moved and associated with a spring. By positioning the device bearing the locking system on the magnet, the creation of a magnetic field around the magnetic retaining part that is sensitive to the field leads to the retaining part being attracted; the movement of the part releases the stem of the post/cylinder, which is then pushed back elastically by the spring. The two parts, including the locking system and the post, can then be separated from each other. The spring makes it possible to open the fastening element very speedily out of its recess, giving it a guaranteed spring effect for ejection, thus making the handling of the device speedier. A suitable detacher 21, such as those available from Unitoptek (under the Sensormatic trade name) removes the pin/post from a connector, thus releasing the facemask connection assembly. There preferably is no need for any batteries and/or an electrical power source, but certain embodiments may employ powered hand held systems, preferably operated by batteries, such as rechargeable batteries, especially those that can be powered by a hand or manual wind up system to generate power for the hand-held device. To comply with written description and enablement requirements, incorporated by reference in their entireties are the following: U.S. Pat. No. 8,125,338 to Li; U.S. Pat. No. 7,073,236 to Xue, et. al.; U.S. Pat. Nos. 8,528,118 and 7,146,652 to Ide (assigned to Riddell); U.S. Pat. No. 8,573,011 to Thoonsen; U.S. Pat. No. 4,603,453 to Yokoyama; U.S. Pat. No. 8,242,910 to Skjellerup; U.S. Pat. No. 6,700,489 to Easter; U.S. Pat. No. 5,729,200 and U.S. Pat. Nos. 6,181,245; 8,746,580 to Li; US patent publication 20140223646 and 20140173810 to Suddaby; 20110010829 to Norman; and 20140223646 and 20140223644 to Bologna.
As explained in greater detail herein, the impact attenuation systems and assemblies described herein may comprise at least one impact attenuation member. The impact attenuation member is purposely engineered to change how the front portion responds to an impact force applied substantially normal to the front portion as compared to how other portions of the shell respond to that impact force. In one version of the helmet, the impact attenuation member is configured to resemble, either structurally and/or functionally, a three ringed Brazilian armadillo shell, with the important caveat that the material between the hard portions (further described below) are comprised of a highly-damped, visco-elastic, polymeric solid, such as a polyether based polyurethane. In preferred embodiments, Sorbothane® is employed because it “flows” like a liquid under load and is a thermoset, polyether based polyurethane that combines high energy absorption with near faultless memory. Sorbothane® is considered a “super soft” polyurethane that can simultaneously absorb shock and vibration energy which makes it preferable to one dimensional materials like rubber and other polyurethanes.
In preferred embodiments, the helmet has at least one layer that includes an array of polygonal structures, most preferably including hexagonal patterns that are prevalent in nature due to their efficiency and strength. In a hexagonal construct, each line is as short as it can possibly be if a large area is to be filled with the fewest number of hexagons. Thus, honeycombs are efficiently constructed to minimize the use of wax and gain lots of strength under compression. Groups of hexagons can form a regular tessellate with 3 hexagons around every vertex, providing superior structural strength, such as seen in the crystalline structure of graphene, e.g. a hexagonal grid. In one preferred embodiment of the present invention, a helmet employs a myriad of hexagonal structures that reassemble—both structurally and functionally—the shell of an armadillo.
Thus, one embodiment is inspired by the three-banded armadillo, which became the mascot of the 2014 FIFA World Cup hosted by Brazil. The armor defense system of the Brazilian three-banded armadillo makes it safe from the majority of predators as it is composed of ossified dermal scutes covered by nonoverlapping, keratinized epidermal scales, which are connected by flexible bands of skin. Armadillo shells are tough but relatively flexible. In certain embodiments, a helmet incorporates such structural and functional features of an armadillo shell and is composed of a tough material such as a plastic (polycarbonate) for an array of polygonal (preferably hexagonal-shaped) sections 23, while using a softer material between the hexagons (e.g. a highly-damped, visco-elastic, polymeric solid, such as a polyether based polyurethane) so that the helmet is flexible and durable. The material between the harder (as compared to the material between the hexagons) may be, for example, an elastomeric material, such as that disclosed U.S. Pat. No. 8,800,977 to Kolb, incorporated herein by this reference. Other embodiments can be comprised of any suitable material that provides the desirable characteristics and response to impact. For example, the padding layer of the helmet can comprise one or more of the following materials: thermoplastic polyurethane (available, for example, from Skydex Technologies), military-grade materials, impact absorbing silicone, D30® impact absorbing material, impact gel, wovens, non-wovens, cotton, elastomers, IMPAXX® energy-absorbing foam (available from Dow Automotive), DEFLEXION shock absorbing material (available from Dow Corning), styrofoam, polymer gels, general shock absorbing elastometers, visco-elastic polymers, PORON® XRD impact protection (available from Rogers Corporation), Neoprene (available from DuPont), Ethyl Vinyl Acetate, impact-dispersing gels, foams, rubbers, and so forth. The padding layer can further be breathable and/or generally porous to provide ventilation. In some embodiments, the padding layer is a mesh material that aids in the breathability.
While specific embodiments and applications of the present invention have been illustrated and described, it is to be understood that the invention is not limited to the precise configuration and components disclosed herein. Various modifications, changes, and variations which will be apparent to those skilled in the art may be made in the arrangement, operation, and details of the methods and systems of the present invention disclosed herein without departing from the spirit and scope of the invention. Those skilled in the art will appreciate that the conception upon which this disclosure is based, may readily be utilized as a basis for designing of other structures, methods and systems for carrying out the several purposes of the present invention to instruct and encourage the avoidance of impacts to players where concussions and potential brain injuries may be encountered. It is important, therefore, that the claims be regarded as including any such equivalent construction insofar as they do not depart from the spirit and scope of the present invention.
This application seeks priority from U.S. Provisional Patent Application Ser. No. 62/031,936, filed Aug. 1, 2014 and U.S. Provisional Patent Application Ser. No. 62/047,260, filed on Sep. 8, 2014. The entire disclosure of the prior applications is considered to be part of the disclosure of the accompanying application and is hereby incorporated by reference.
| Number | Date | Country | |
|---|---|---|---|
| 62031936 | Aug 2014 | US | |
| 62047260 | Sep 2014 | US |
