1. Field of the Invention
The present invention relates generally to ice hockey stick handles (also referred to as shafts), and more particularly, to a hockey stick handle that has an asymmetric cross-section over all or part of its length.
2. Description of the Background
The handling of a hockey stick requires a player to hold and control a hockey stick in numerous specific ways with many different combinations of hand placement over the length of the handle, each optimal for the live action situation confronting the player. Consequently, hockey players constantly move their hands along the handle in multiple positions to grip and control the hockey stick handle. This control is generally referred to as “stick handling.” Effective stick handling requires a player to constantly reposition his hands along the handle to control the blade of the hockey stick. As used herein, “stick” refers to the apparatus as a whole, including the handle (or shaft) on which a player's hand(s) is/are placed, and the blade.
On a basic level, certain hand positions are correct and others incorrect.
Throughout a hockey game, players must maintain correct hand placement in a wide variety of split-second situations. In each situation, the appropriate hand placement enables the player to impart force and torque on the hockey stick to effect a desired motion, e.g., passing, shooting or maneuvering a hockey puck.
An example of this constant hand repositioning is a hockey player who intercepts a puck, carries the puck while charging to goal, and then shoots the puck. In carrying the puck the player typically grabs the hockey stick handle at or near its distal end with one hand for maximum reach, and extends the hockey stick out in front while skating. Once the puck is under control the player pulls the hockey stick toward his body and simultaneously repositions one or both hands, often grabbing the handle with both hands spread along the shaft, and maintains this grip while skating and carrying the puck. Then, when preparing to shoot, the player re-grips the bottom end of the handle and cocks the stick back with both hands. Thus, in the course of executing three consecutive game skills, the player quickly repositions his hands multiple times.
The ability to properly position and quickly reposition hand placement without losing control of the handle requires a player to make subtle adjustments in hand gripping force. A strong gripping force is required to hold and cock the stick, especially for the lower hand. An intermediate gripping force is required to slide a hand along the shaft without releasing the handle entirely. Such rapid grip adjustments are sometimes difficult to execute on conventional handles, which typically have a rectangular, symmetrical shape such that the top section of the handle is a mirror image of the bottom section of the handle. Such geometry, particularly on the bottom section of a handle where a player's fingers wrap around and connect to the handle does not cooperate with a player's hand naturally and provides little or no tactile feedback. In addition, factoring in the effects of fatigue, perspiration and bulky protective gloves, it is easy to see why players sometimes lose a firm grip on ice hockey stick handles and desire more tactile feedback.
The use of hockey protective gloves can frustrate a player's grip on the hockey stick shaft. Although these gloves protect the outside of a player's hand, the layer of material between the shaft and the player's palm and fingers, no matter how tacky, reduces the player's tactile feel for the shaft. To improve grip, players frequently tape the shafts with athletic tape, Tourna Grip™, or similar grip materials. Although these minor adjustments may approximate a grip, it is difficult to build shapes out of the tape that complement finger placement and/or that increase the diameter of the handle to aid a player in using the required gripping force. Athletic tape, the most common add-on by players, has a limited life span before it disassembles and new tape is required. What is needed then is a hockey stick handle having a cross-section that is instantly recognizable by tactile feel through a glove, yet maintains a familiar looking top side geometry, but is more suitable to a hockey player's special demands for stick/puck handling, passing and shooting at high speed and pinpoint accuracy. The cross-section of the disclosure can accommodate hockey-specific hand movements in terms of how and where a player grips the handle, slides and then repositions his hands and executes passing and shooting mechanics, while providing useful tactile feedback. For experienced players that demand a traditional hockey stick visual, the cross-section of the disclosure also satisfies that need. In addition, the cross-section of the disclosure reduces the shaft weight without compromising strength, rigidity, and durability at particular locations along the handle.
One aspect of the present invention provides a hockey stick handle having an asymmetric non-rectangular cross-section along all or part of the handle length to provide informative tactile feedback.
In an embodiment, the asymmetric non-rectangular cross-section runs all of the handle length, needing only to change along its length to transition to and interface with the blade portion of the stick, as is understood in the art. In another embodiment, the asymmetric non-rectangular cross-section runs along a “middle portion” of the handle, e.g., a medial segment of the handle comprising at least 30% of the entire length of the handle located where the player frequently grips with their bottom hand. As such, this middle portion asymmetry ensures tactile feedback to the user. In this embodiment the asymmetric cross-section may transition near the distal section (upper tip) of the handle to a symmetric rectangular cross-section to give both right-handed and left-handed players the same feel when grasping the handle.
In yet another embodiment, the asymmetric cross-section runs along a segment of the handle length that includes the middle portion of the handle but not either the distal or proximate sections of the handle.
For purposes of the disclosure, “asymmetric” is herein defined as lacking the mirror-image or near mirror image quality of symmetry along the top and bottom of a handle, and “symmetric” is the opposite. The “bottom section” of the handle will refer to that portion of the handle when viewed from a cross-section that comprises a non-rectangular polygonal shape, and the “top section” of a handle refers to that portion of the handle when viewed from the same cross-section that comprises a generally rectangular shape. When viewing the handle in an xyz coordinate system with the elongate handle running up the y-axis the handle will have an overall length along the y-axis. At any point along the y-axis the handle will have an overall cross-section parallel to the x-z plane. Viewing a cross-section at any point along the y-axis, a theoretical “section line” parallel to the z-axis bisects the cross-section into two sections and separates the “top section” from the “bottom section.” The section line will be slightly offset from the y-axis along the x-axis. This theoretical section line defines and is included as one side of both the “top section” and the “bottom section” for purposes of any geometric description herein.
One skilled in the art will understand that many hockey sticks utilize a replaceable blade and shaft configuration incorporating a “tenon”, “shank” or “hosel”, which generally comprises a short keyed extension for insertion into a socket of the blade. However, there are also two-piece hockey sticks in which the blade is formed with an upwardly-protruding keyed extension that inserts into the hollow handle. In either case, the hosel is ignored for purposes of any geometric description of the handle in this disclosure.
In all embodiments of the disclosure, the asymmetric section can have a unique non-rectangular polygonal cross-section (e.g. hexagonal, polygonal, isosceles trapezoidal), asymmetric about the section line (parallel to the z-axis), which causes the entire cross section of the handle to form an irregular convex shape. The asymmetrical cross section remains constant over all or most of the handle's length, only deviating in some embodiments to accommodate intersection with the blade portion of the stick. In an embodiment wherein the ice hockey stick is either one-piece or two-piece but the blade portion has a receptacle designed to match the handle or vice versa, the asymmetric cross section remains constant over the entire length of the handle and inserts into the receptacle. In another embodiment, wherein the stick is two-piece and the blade portion receptacle does not match the handle, the handle cross section for visual and fit purposes transitions from the asymmetric cross section to a symmetric or other geometry (e.g., spear-like or other design choice shape) that fits the blade portion receptacle.
The asymmetric cross-section can comprise on its bottom section at least two beveled or rounded edges diverging from a short bottom edge, the angles being tailored for the requirements and preferences of a hockey player, as disclosed below.
The asymmetric convex cross-section may be symmetric along the vertical centerline (x-axis), asymmetric along the horizontal section line, and defined by three substantially orthogonal long sides joined by three angled short sides. One of the short sides is parallel to a long side on the top portion and the other two short sides join the other two long sides at an angle, such that two short sides form beveled edges. All edges can be rounded, and all sides may optionally be slightly concave.
The cross-sectional shape, length, and location of the handle sides accommodate the gripping, sliding, and carrying techniques peculiar to hockey. In addition, the asymmetric convex cross-sections of the disclosure can provide desired degrees of strength, rigidity, and durability at particular locations along the handle.
To achieve the asymmetric cross-section, the preferred manufacturing process is high pressure bladder molding that is understood in the art. In a preferred one cross sectional handle, however, conventional techniques such as extrusion and post-extrusion bending can be utilized.
The present invention is described in greater detail in the detailed description of the invention, and the appended drawings. Additional features and advantages of the invention will be set forth in the description that follows, will be apparent from the description, or may be learned by practicing the invention.
Other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments and certain modifications thereof when taken together with the accompanying drawings in which:
Reference will now be made in detail to preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.
The asymmetrical cross section remains constant over all or part of the handle's length, deviating in one embodiment only when necessary to accommodate intersection with the blade portion of the stick. In other embodiments the asymmetric cross-section may extend along at least 30% of the entire length of the handle or along only a segment of the handle that includes the middle portion of the handle. In one embodiment wherein the ice hockey stick is either one-piece, or two-piece but the blade portion has a receptacle designed to match the handle or vice versa, the asymmetric cross section remains constant over the entire length of the handle for insertion into the receptacle. In another embodiment, wherein the stick is two-piece and the blade portion receptacle does not match the handle, the handle cross section for visual and fit purposes transitions from the asymmetric cross section to a geometry that fits the blade portion receptacle, e.g., spear-like or other shape as a matter of design choice.
As seen in
The substantially rectangular top section 12 affords both left handed and right handed players the same look and feel when grabbing the handle. Top section 12 can be defined by four substantially orthogonal sides 31-33 (the fourth side defined by the section line). Two long sides 31, 32 are of uniform length, are joined together at both ends by the section line side and short side 33, respectively. The short side 33 is parallel to the opposing section line side. In a preferred embodiment the two long sides 31, 32 are within a range of from 21-31 mm long and of uniform length, and the short side 33 is within a range of from 18-22 mm long. Both corner-edges are preferably rounded at radius within a range of from 3-6 mm.
The irregular convex bottom section 14 can be defined by three long sides 21, 22, and the section line and a short side 23. Two long sides 21, 22 are of uniform length, are joined together at one end by the section lineside, and are joined together at their other end by the short side 23. The short side 23 is parallel to the opposing long section line side. The other two long sides 21, 22 join the long section line side at an acute angle α within a range of from 15°-75° relative to the horizontal section line side, more preferably 30°-60° (as shown). The two flanking long sides 21, 22 join the short side 23 at an obtuse interior angle β, supplementary to acute angle α. All corner-edges are preferably rounded or beveled. In a preferred embodiment the two angled long sides 21, 22 are within a range of from 5-27 mm long and of uniform length, and the section line side is within a range of from 18-22 mm long. The two right-angle edges formed thereby are rounded at radius within a range of from 3-6 mm, most preferably at a 4.5 mm radius of curvature and are made slightly bulbous. Any or all of the long sides 21, 22 may be straight or slightly concave, and if the latter, the concavity should not be less than a 70 mm radius of curvature. The short side 23 is within a range of from 1-13 mm long, and its edges are rounded or beveled in the previously specified angle range, preferably within a distance range of from 3-11 mm from the edge. The four opposing edges of bottom section 14 are rounded at a smaller radius of curvature within a range of from 1-4 mm, and most preferably 2 mm. Again,
For example,
In addition to the foregoing dimensional variables, varying degrees of convexity or concavity are contemplated along the cross-section centerline running top-to-bottom, creating what could be described as a warped or bulged profile. This top-to-bottom warp or bulge may be desirable to some players, for example, to conform the handle to the curve of their dominant hand. As seen in
In all above-described embodiments the cross-sectional shape, length, and location of the asymmetric handle accommodate the gripping, sliding, and carrying techniques unique to hockey, providing tactile feedback to inform the player of hand placement and/or an alternative stick shape option. This is immediately apparent during use, and most readily apparent from a visual collage.
A preferred manufacturing process entails high pressure bladder molding carbon-based composite handles within an appropriately shaped mold, although conventional techniques such as extrusion and post-extrusion bending are also possible methods to manufacture. In comparison to handles having traditional cross-sections that are symmetrical in terms of their top and bottom sections, the embodiments of
According to another embodiment of the present invention, the above-described hockey handles are formed by high pressure bladder molding of carbon-based composite material on a pneumatically-inflated bladder to press composite working material into a die. The basic steps of high-pressure bladder molding comprise: 1) creating a composite preform of the handle; 2) inserting an inflatable bladder; 3) placing the composite preform into a preset mold (mold usually aluminum or steel); 4) pre-heating the mold; 5) pneumatically inflating the bladder to exert high pressure from the inside; and 6) curing. During curing, the composite hardens and holds the shape of the mold.
Any polymer-based composite material may be used, including fiberglass, carbon fiber, or Kevlar™, for example. The composite material is formed in a preform structure approximating the negative mold cavity, e.g., a hollow composite tube shaped lengthwise to fit the negative mold that has the shape of the desired hockey handle.
The embodiments of the present invention described above apply equally well to men's hockey sticks, to women's hockey sticks, to sticks for players of all sizes and ages, to sticks used in competition hockey (e.g., professional, club, and box hockey, and hockey governed in whole or in part by NCAA rules), and to sticks used in non-competition hockey (e.g., recreational and instructional hockey sticks used in physical education classes). In each application, the present invention is adaptable to provide unique advantages for different types of players at different levels of play.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the claims. In addition, as one of ordinary skill in the art would appreciate, any dimensions shown in the drawings or described in the specification are merely exemplary, and can vary depending on the desired application of the invention. Many variations and modifications of the embodiments described herein will be obvious to one of ordinary skill in the art in light of the above disclosure. The scope of the invention is to be defined only by the claims, and by their equivalents.
In ice hockey, the ability to properly position and quickly reposition hand placement without losing control of the handle requires a player to make subtle adjustments in hand gripping force. Such rapid grip adjustments are sometimes difficult to execute on conventional rectangular handles, which provide no informative tactile feedback. This is a problem, especially when using hockey gloves. There would be great industrial applicability in an ice hockey stick handle having a cross-section that is instantly recognizable by tactile feel through a glove, without deviating too far from the conventional handle construction and appearance. The present hockey stick handle with asymmetric non-rectangular cross-section extends along all or part of the handle length provides informative tactile feedback and fulfills that need.
The present application derives priority from U.S. provisional application Ser. No. 62/221,883 filed Sep. 22, 2015.
Filing Document | Filing Date | Country | Kind |
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PCT/US2015/063745 | 12/3/2015 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
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WO2017/052675 | 3/30/2017 | WO | A |
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