Patent Grant
11534660
This disclosure relates to exercise equipment. In particular, the disclosure relates to a flexible exercise bar, exercise method, method of manufacturing and fitness software application.
Many exercise devices provide only one mode of use targeting a limited area of the body, such as a chin-up bar. These devices may need to be supplemented by many other exercise devices or routines for a comprehensive workout. Most mechanical exercise device solutions fail to completely solve industry problems because they force the user to follow the pattern and range of motion and location of a device around that the device mechanically travels, with only some adjustment for effort and size of the user.
Existing exercise devices often are not mobile so can only be used when resident in a particular location, requiring a break in exercise routine when vacationing, for example, and the inability to choose between exercising indoors or outdoors.
What is needed is an exercise device that offers a significant quantity of practical use modalities that appear as simple and graceful forms, blending naturally and gracefully with human anatomy, is portable and safe to use.
An exercise device is disclosed comprised of a flexibly bendable pole with spring-like properties that may be used for many exercise methods; isotonic, isometric, calisthenics, aerobic forms of exercise, as well as an aid for stretching, self-massage, guided meditation, wireless personal fitness tracking with mobile app integration and supports remote individual coaching and group engagement.
The exercise device provides support and controlled resistance for a range of upper extremity, shoulder, back, torso, core, and whole-body exercises, while helping a person maintain good posture and balance. It may have ergonomic hand grips at both ends and an adjustable cushion positioned in its middle. The spring rate is provided by a bundle of small diameter resilient rods which can be configured for a person's size, weight, and fitness level for specific type of use. It is also an IOT (Internet of Things) device that integrates with a fitness app to support user engagement and development of a positive fitness habit.
The exercise device may also be incorporated into various artistic and therapeutic forms of movement; including but not limited to, modern dance, group dances, accessorized for unusual or competitive sport, child's play, parade and multimedia artistic displays, and physical therapy.
The exercise device may be used in a vast number of places, including indoors or outdoors, at health clubs, at home, offices, parks, beaches, schools and doctor's offices, for example. It may be used for physiotherapy, occupational therapy, specific pre-sport or après-sport routines to help maintain flexibility, focus and tonus.
The exercise device can be accessorized with custom decorations, branding images, supportive electronics such as speakers, IOT communication, location, and force sensors, haptic feedback, responsive and programmable lighting for entertainment and cuing of the user or a group, general creative movement, and remote app and tele-video participation.
An illustrative exercise device comprises of a resilient, bendable pole with spring-like properties that can be used for both isotonic and isometric forms of exercise as well as an aid for stretching and self-massage. Its use provides both support and controlled resistance for a range of upper extremity, shoulder, back, torso and core exercises. It may have ergonomic hand grips at both ends and at an adjustable position in its middle. The bending force or spring rate can be provided by a variety force generating assemblies, including for example, bundle of flexible, resilient rods or springs that can be configured for a user's size, weight, fitness level of specific type of use.
A key element of the exercise device is the assemblies that provide the characteristic spring force. Illustrative spring force or bending force assemblies include, flexible rods, spring mechanisms and other resilient mechanisms. The selection of rod section shape or shape of the core determines whether the flexion is more or less constrained to a single plane (square or rectangular/prismatic sections) or is omni directional (round sections).
End grips at either end of the pole primarily provide an ergonomically appropriate means for the user to grasp and operate the device and serve to protectively cap the rod bundle ends by connecting to the IMU (inertial measurement unit) and/or outer jacket. The end grips can also serve as housings for batteries, electronics and sensors, and provide additional weight & inertia.
An outer sleeve or spacer comprises the outer surface that the user holds, provides a means of keeping the spring force assembly intact and may also serve as a protective layer in the event that a rod or other component should break.
Areas of the exercise device, such as end grips, middle grips or center channel, may contain an additional rod or other devices or accessory elements such as sensors, lighting, wiring, batteries, other electronic components, or weights, for example. Within the device there are opportunities for embedded systems that provide additional functionality, user feedback and interactivity. The exercise device may be integrated with a fitness software application.
The detailed description refers to the accompanying figures, which depict illustrative embodiments, and in which include:
FIG. 16A1 depicts a flex-shell having flexible rods therein.
The figures and descriptions provided herein may have been simplified to illustrate aspects that are relevant for an understanding of the described devices, systems, and methods, described herein while eliminating, for the purpose of clarity, other aspects that may be found in typical devices, systems, and methods. Those of ordinary skill may recognize that other elements or operations may be desirable or necessary to implement the devices, systems, and methods described herein. Because such elements and operations are well known in the art, and because they do not facilitate a better understanding of the present disclosure, a discussion of such elements and operations may not be provided herein. However, this disclosure is deemed to inherently include all such elements, variations, and modifications to the described aspects that could be implemented by those of ordinary skill in the art:
Numerous components will be illustrated that provide bendable pole 102 with its bendability and resiliency properties desirable for it to be used as an exercise device.
Rods 112 may have a diameter, for example, in the range of about 0.25 inches to about 5/16 inches. An illustrative rod material is fiberglass reinforced plastic (FRP). For example, a solid material produced by a pultrusion method with a 65% by weight continuous glass roving material and 35% pultruded composites properties. Illustrative FRP properties as measured using American Standard Test Methods (ASTM) include:
Illustrative materials for spacers 110A, 110B and covering components include polyolefin, nylon, polyurethane of various durometer as a solid ranging from Shore 40 to 90 D and also used for ball-ends and ball middles bendable pole 102 coverings and PVC polyvinyl chloride.
In an illustrative embodiment, bendable pole 102 comprises a spacer 110 configured to keep a plurality of rods 112 spaced apart. Illustrative spacer 110A comprises a solid cylinder with a plurality of channels 114 disposed there through and extending the length of the spacer. Such rods may be multi-lumen tubing having a plurality of channels 114 therein. Rods 112 may be threaded through channels 114. Each of the plurality of channels 114 may have a rod 112 extending there through, or one or more channels may be left empty to accommodate other components, such 4s electronics, for example. The one or more channels that accommodate components other than rods 112 shall be referred to as spacer interior openings 116. Channels 114 may be uniform with respect to each other or may differ in shape and size, depending on what is threaded through channels 114. More than one rod or other components may be disposed within a single channel. Spacer 110. may have thin-walls, for example, in the range of about 0.010″ to about 0.030″. Spacer 110 may be of a non-uniform cross-sectional shape to provide different bending forces when bendable pole 102 is bent in difference directions. Unused channels may contain a filler. In an illustrative embodiment, spacer 110 has six equally circumferentially distributed channels for rods 112 and a seventh: central channel, for other components such as electronics.
Illustrative filler material includes polyurethane, FRP aid spring steel rod fillers. These may be used to replace the location and volume of one or more rods in a bundle. Illustrative fillers include polyurethane tubing or PVC tubing of equal, or near equal size as the rod it replaces. The filler material may be easily flexible so as not to contribute to the overall flexural strength of the bending arc while in use; however, it does maintain the volume of where an FRP rod may otherwise be located. Substituting the “filler tube material” allows for lighter or heavier bending arc efforts while maintaining diameter of bendable pole 102. In other cases fillers may provide optional decorative and active features by filling the tube with materials such as glowing gel and LED lights and reflective materials like glitter.
Spacer 110 may also have the form shown as part 110B. Spacer 110B has a cross-sectional profile with a series of concave edges to accommodate rods 112 on the outside of the spacer. Spacer interior opening 116 may be hollow to accommodate an additional rod(s) 112 or other components.
Spacer 110 may be continuous along the length of bendable pole 102. In an alternative, illustrative embodiment, spacer 110 may comprise a plurality of segments. The segments may abut one another or may be strategically spaced apart along the length of bendable pole 102 to coordinate with or provide desired properties, such as maximum degree of pole flexure, or desired features conducive to various exercises. Spacer 110 may comprise segments of uniform length, or varied length. The length of spacer 110 segments may also be chosen to create or coordinate with desired properties, such as maximum degree of pole flexure, or desired features conducive to various exercises, for example.
An exemplary embodiment has six flexible rods of equal length in a hexagonal pattern, each nominally Ø 5/16″, round in cross-section. The bundle includes an open position in the center of the bundle that may or may not contain a seventh rod or other structure(s). Typically, the rods may be fiberglass reinforced resin, formed as a fiberglass reinforced plastic (FRP) pultrusion. The total length of the rod bundle is variable depending upon the arm span of the user, and can typically range from 36″ to more than 72″. In an illustrative embodiment; length is determined at time of manufacturing and is not user adjustable, however alternative embodiments include-a means by which one device could be variably configured by the user to adjust to a range of lengths. The ability of rods 112 to bend sufficiently without splitting and cracking is possible because of the combination of limiting rod diameters, selecting suitable materials and assuring quality control of the rod's composition and manufacturing process.
The lubricity required for the rods to slide freely may be provided by the properties of the rod material (i.e. low friction) or spacer material, or an additional lubricant may be applied to the interior surfaces of the spacer or rods. For example, rods may be coated with PTFE, and FRP rods in groups will slide against each other by a coating of silicon gel applied during the assembly process.
Illustrative grip materials are polyurethane integral skin foam molded balls and bar coverings. Bendable pole 102 may include coverings. Some portions of the bendable bar coverings may be solid yet pliable polyurethane 40 to 80 durometer and other bendable bar coverings may be closed cell polyurethane foam. The coverings may provide one or more of the following characteristics: water proof, nonabsorbent and UV, cleaner and body oil resistant.
In an illustrative embodiment, middle grip 108 comprises a roughly 2″ ball-like form composed of a dense foam rubber or integral skin urethane molding. An illustrative range of ball diameters is about 1.5″ to about 2.5″. Middle grip 108 may be a single element with two ball like forms at a set distance apart, or it may consist of two identical elements in a mirrored orientation that can slideably be positioned at a range of distances apart. In a further embodiment, middle grip 108 includes two identical elements in a mirrored orientation with a central grip bendable pole portion 124 there between. Central grip bendable pole portion 124 may be a separate component onto which middle grip end portions 126A, 126B are disposed, or it may be the central portion of bendable pole 102. If a separate portion, it would be flexible to allow bending with portions of bendable pole 102 that would be disposed on either side of middle end portions 126A, 126B. Each portion of middle grip 108 may have any shape that is conducive to carrying out any or all of the functions mentioned herein.
Middle grip 108 may be adjustably attached to bendable pole 102, or may be fixedly attached thereto. In an illustrative embodiment, such as shown in
Images A1, B1, C1, D1 show middle grip end portions 126 with a spherical shape. Images A2, B2, C2, D2 show end portions with round-like, but not spherical shapes. Other shapes may be used provided that they are compatible with the use of exercise device 100. Illustrative end views of middle grip 108 taken from the middle grip end portion 126 end are shown as images E1, F1. Illustrative end views of middle grip 108 taken from the middle grip tubular portion 124 end are shown as images E2, F2. Images E1, E2 depict a middle grip 108 having a-round middle grip end portion 126. Images F1, F2 depict a middle grip 108 having an elongated or non-spherical middle grip end portion 126.
This may be applied for decorative purposes or to impart tactile cues for hand positioning. First middle grip end portion 126A and second middle grip end portion 126B may be constructed of textured polyurethane and integral skin molded foam.
Images A-D in
Bendable pole 102 may also have a trim fitting handle with a walking stick style wrist loop or shovel handle style at the ends.
As shown in
Bendable pole 102 may be hollow and clear, and may hold sparkle liquid and falling glitter as well as light collecting liquid that glows in the dark. Bendable pole 102 may also include internal glitter and glow, non-toxic liquids, which may also be contained in balls 144A, 144B.
In an illustrative embodiment, one or more of the middle grip 108 or end grip 104 end portions 126A, 126B are configured to house electronic components, such as lighting, batteries, control boards (PCBs), wire harnesses and/or audio and/or sensors. Sensors may, for example, provide one or more of: health-related data, information on movement and positions, calories burned, and other exercise-related information. The electronics disclosed throughout and other electronics may be incorporated into any component as noted, and could include any of the identified components, even if not mentioned herein with regard to a specific exercise device part.
Electronic components or assemblies (“electronic additions”) may be strap on, clip on or integrated into middle grip 108 or nearby, or a combination thereof. The electronic components or assemblies may also be housed in the end grips. The electronic additions may have haptic feedback or lighting. The electronic additions may include batteries and controls. Portions of the electronic additions may be incorporated into or onto the exercise device, but may also exist apart from the exercise device and communicate either wirelessly or through hardwiring to electronic addition parts incorporated into or onto the exercise device. In an illustrative embodiment, electronic additions measure the amount of work and peak efforts, for example through strain sensors which produce a signal that is proportional to the amount of main bending arc deflection. Such components may require mechanical integration and activation of the components.
In an illustrative embodiment, to measure the amount of work and peak efforts of a user, a conductive plastic material, for example, those marketed under the names Velostat® or known as Linqstat, is integrated into first or second end grips 104A, 104B of bendable pole 102 where mechanical forces to the first or second end grips 104A, 104B or to ends of bendable pole 102 can be translated to a variable voltage and then to a bluetooth signal that is sent to a bluetooth sending unit. Or the signals may be transferred by hard wiring to a display and any other intermediary electronic components required to translate the signal into a displayed quantity or depiction, or to a storage medium. The conductive plastic material is pressure-sensitive so that squeezing it or squashing it reduces the electrical resistance. The electrical resistance reduction is converted to an electronic signal that represents the amount of work effort exerted by a user. In an illustrative embodiment, a carbon-impregnated, sheet plastic is used or a polymeric foil (polyolefins) impregnated with carbon black to make it electrically conductive. The conductive material produces a variable yet proportional resistance which may be converted to a proportional bluetooth signal and transmitted to an electronic device(s) for processing and displaying. For example, the signal may be transmitted to a user's smart phone on which a software application (“app”) has been downloaded. The app converts the signal to the bending force equivalent by incorporating model type and size. Each pairing of user and sensor may be unique. This allows the app to programmatically calibrate the effort to the device in use and the associated smart app to track user work in many ways, including effort max, time per cycle, averages, total time, repetitions as well as additional functions for haptic feedback and acceleration sensing, each incorporated at the bluetooth sender. Signal changes and time between changes are integrated into the computation resulting in a factor that represents the amount of work accomplished, plus the amount of bar deflection and the amount of time between changes in displacement of the bar from straight or bent positions and back again. These factors once computed produce a measure of the work done.
Sensors are generally located on exercise device 100 in positions that facilitate sensing the pressure or other quantity to be measured. Other electronic components or assemblies are positioned in locations that do not interfere with use of the exercise device, and are located as necessary with respect to other components or assemblies that act in concert.
Illustrative lengths of the exercise device with a motorized massage assembly include 36 inches and 24 inches, however, other lengths may be used. Additional components of exercise device 100 described above, for example comfort cover 156 and various rod and core configurations may be incorporated into the exercise device containing the motorized massage assembly.
It is further noted that sensor measurements may be obtained by sensors incorporated into wearable items such as gloves. Instead of the sensor portion of the measurement apparatus being incorporated into or attached to the exercise device, the sensors may be provided in a separate item that is configured so that through the pressure exerted by the user, and the amount of work and peak efforts of a user may be measured. In this embodiment, the complete electronic addition may be separate from the exercise device in whole or part.
Input/output devices 208 are coupled to data interface 206. Input/output devices 208 may include, for example, sensors, image capture devices, data entry devices, displays, lights and speakers. A network interface 210 is also shown coupled to data interface 206, which may couple the computing device components to a private or public network 212.
One or more electronic components may be connected wirelessly to one another. One or more of the electronic components may be contained in or on various parts of exercise device 100, for example in bendable pole 102, end grips 104, or middle grip 110.
The force between the bendable pole ends is cumulative according to the number of rods 112 included in bendable pole 112. For example, a three rod bendable pole 102 may produce about 30 lbs of tension force when the bendable pole ends are 24 inches apart. A four rod bendable pole 102 may produce about 40 lbs of tension force when the bendable pole ends are 24 inches apart. A five rod bendable pole 102 may produce about 50 lbs of tension force when the bendable pole ends are 24 inches apart. A six rod bendable pole 102 may produce about 60 lbs of tension force when the bendable pole ends are 24 inches apart. A seven rod bendable pole 102 may produce about 70 lbs of tension force when the bendable pole ends are 24 inches apart. An eight rod bendable pole 102 may produce about 80 lbs of tension force when the bendable pole ends are 24 inches apart. Higher forces can be attained by adding metal spring rods to hollow core areas at a bend and adding larger diameter FRP rods.
Larger than 5/16 inch diameter rods 112 require special FRP formulation to increase flexibility without fracture of a rod 112 bent at 3 inches point to point. Larger rods 112 can achieve the flexural durability necessary to get to the 3 inches point to point performance standard at a lower proportional total effort as compared to standard FRP at 5/16 inch.
Illustrative core diameters includes 1 5/16 inch, 2⅜ inch, 3 7/16 inch and 4% inch. In an exemplary embodiment, core diameter and suitable FRP formulation are selected so the combination achieves a 60″×3″ point to point non-destructive, anti-splintering standard and non-fatigue elasticity to withstand normal use.
Full or partial polyurethane or neoprene grip foam slide on coverings in all may be disposed around bendable pole 102.
Overall bar lengths of exercise devices 100 may be for example, in the range of 24 inches to 72 inches. Lengths of 48 inches to 72 inches will be more suitable to adults, or stronger, taller users. Lengths in the range of 24 inches to 48 inches with lower force ranges and higher elasticity and safety features will generally be more suitable for children.
Exercise device 100 may be configured so bending is directional. This may be a result of, or accomplished by, the distribution of rods 112 within or around a spacer, rod cross-sectional shape or other factors. Exercise device 100 may also be configured to bend uniformly in any direction.
Bendable pole 102 may include a shrink-on flexible plastic layers, that may be used, for example, for branding or other labeling.
The PVC heat shrink flexible tubing can cover a decorative layer where preprinted custom art and logos may be applied and protected from abrasion and wear by the final outer PVC heat shrink layer. A safety layer of polyethylene terephthalate (PET) braided mesh, which may also be decorative, can cover and help contain the main bending rods 112 and protects against fracturing and splintering projections of FRP in the event of bar destruction by accident or misuse. The combination of the braided PET mesh cover and the clear heat shrink layer may support all exercise-device force components and may contain them in the event of catastrophic breakage keeping all FRP contained. These features may also be achieved by use of the injection molded polyurethane.
In a illustrative example, first end grip 104A and second end grip 104B may comprise one or more of the following materials: textured polyurethane and integral skin molded foam. First end grip 104A and second end grip 104B may be identical to one another, as shown in
First end grip 104A and second end grip 104B may be bonded to bendable pole 102 or may be removeably attached thereto. For example, first end grip 104A and second end grip 104B may be formed of a flexible, securely fitting polyurethane that stays on bendable pole 102 through a combination of mechanical interference over a small circumferential bump at the end of the bar and through adhesion between the polyurethane of the end grip 104A, 104B and the PVC heat shrink or injected molded polyurethane.
First end grip 104A and/or second end grip 104B may have a hollow interior section configured to accommodate electronic components such as sensors, light or audio components, for example. First end grip 104A and second end grip 104B may also include weights, for example within the hollow interior section. Weights may be incorporated into first end grip 104A and second end grip 104B as a permanent component, or may be removeable. A plurality of weights may be provided with exercise device 100 and selectively added or removed from exercise device 100, particularly if first end grip 104A and second end grip 104B are removeable. First end grip 104A and second end grip 104B themselves may serve as interchangeable weights. Cushioned end grips with a soft outer surface can allow weighted ends without diminishing safety characteristics.
In an illustrative embodiment, weights are attached to exercise device 100 and may be weighted foam segment covers that are stretch fabric covers that have flexible heavy metal rubber composite materials that wrap around pole 102 adding up to a few pounds per side of exercise device 100. The added weight in motion can have substantial dynamic effects during exercise programs; similar to wearing weights on your ankles in step aerobics but do not add to the bending arc forces. Additionally, hollow core models have the option of adding additional metal spring rods to the hollow central core of certain models with a large hollow core, for example up to 12 each, ⅛ inch diameter steel rods to about 3 lbs overall and considerable bending arc force.
Exercise device 100 may be configured to provide particular spring forces, such as by the materials used, length of bendable bar 102, diameter or cross-sectional size and shape of bendable bar 102 and spacer type and configuration. In an illustrative embodiment, the length of exercise device 100 is in the range of about 3.0 feet to 6.5 feet. In an illustrative embodiment, the diameter of bendable pole 102 is in the range of about 3/16 inch to about 5/16 inch. In an illustrative embodiment, force/bending moment about center point/spring rate/resistance may have a range from approximately 3 to 10 lbs. of force per rod element at 60 inches length and 24 inches end to end deflection.
Rod efforts operate collectively and vary by rod diameter and length. For example, a bar with 6 force rods having 60 inches overall length and having a 5/16 inch diameter per rod in one bar collection will produce approximately 60 lbs. of force when ball ends are deflected to within 24 inches of each other in a U shape. One 60″ long 5/16 inch rod may produce about 10 lbs. of force when fully deflected. Other diameter rods and lengths will produce proportionately more and less force at the 24 inches deflection and 60 inches length base line.
Elliptical X core 148 may be comprised of an FRP pultruded material, for example, or other fiber-reinforced plastic. In an illustrative embodiment, elliptical X core 148 has a strain relief center hole 152 that is ⅛ inch in diameter strain through the length of the core. A bendable pole 102 with the elliptical X core 148 may be, for example, polyurethane over-molded or a co-extruded X covered bendable pole.
The minor and major diameters of elliptical X core 148 may be bent at any 360 degree rotational position of bendable pole 102. Bendable pole 102 performance favors bending along the east-west direction (
The X shape of elliptical inner core 148 can be defined by the distance between the top and bottom head pairs (L1) and the left and right side pairs (L2), as will be described further below. When L1 and L2 are equal, the main bending arc produces equal and symmetrical forces. When L1 and L2 are different lengths, the main bending arc forces become asymmetrical providing a range of greater or lesser effort in the bending arc depending upon end grip rotation relative to the user's grip.
A comfort cover 156, for example, a closed cell medium density foam, may be disposed around X core covering 154. An illustrative material is polyurethane. Comfort cover 156 may be in the form of a tube, for example with an approximate 0.1 inch wall thickness, that surrounds X core 148. Comfort cover 156 may span the entire length of bendable pole 102 or a portion of its length. Exercise device 100 may also be constructed without a comfort cover 156.
The minor and major diameters of bendable pole 102 when bendable pole is in an extended position, not including the comfort cover 156, are shown in
The combination of gauge size of bendable pole 102, X core 148 gauge and the hardness of the co-extruded polyurethane or other integral covering of a range of durometer, produces a wide range of bar efforts from light to heavy duty. The gauge size and effort ranges and bendable pole 102 overall lengths in 0.5 inch increments can cover a very wide range of population with a comfortable fit and exercise suitability.
The shape of flex-shell 166 is defined by dimensions A and B. When equal, flex-shell 166 is round and the main bending arc produces substantially equal and symmetrical forces.
Similar to the illustrative embodiment shown in
Hollow core 164 allows for deformation of the elliptical profile of flex-shell 166 during a bending cycle. This enables full bending range of motion of bendable pole 102 from first end grip 104A to second end grip 104B. The relatively large, elliptical, hollow core 164 profile causes the bending arc force to be less when bending across its cross-sectional long length. While bending parallel to the long length produces a greater bending arc force. Hollow core 164 may be filled with a spring, such as a small diameter (approximately ⅛ inch, for example) steel spring, to provide a further performance feature. In addition, or instead, hollow core 164 may house rods 112 to add weight and increase bending arc forces without building high internal stresses that would result in rod fracture. As noted elsewhere, rods 112 may comprise FPR, for example.
The combination of technical features; flex-shell 166, metal spring fillers and generous deformation tolerance may assure that long term fatigue free performance is delivered.
The “zero” or oval shape, such as shown in
Examples of dimensions of bendable pole 102 with elliptical zero-shaped hollow core 164 include:
Examples of dimensions of bendable pole 102 with elliptical, Easter egg shaped, hollow core 168 include:
Elongated hollow core 170 is defined by a width B and a length C. Flex-shell 166 has a diameter A. The greater the difference between width B and length C, the greater the effort differential. The effort differential applies to all hollow core and flex-shell methods by introducing asymmetry in the main bending arc effort. Asymmetry though may not always be a desirable feature for a user. This is different than round profiles with symmetrically proportioned and concentrically located internal features, which produce unilateral performance regardless of the position of bendable pole 102 or the user's grip.
Examples of dimensions of bendable pole 102 with round hollow core 170 include:
FIG. 16A1 depicts an illustrative embodiment of a flex-shell 166 with rods 112 within a core 172. Core 172 may be in one of the forms shown in
Elliptical X core 148 can be added inside the Easter egg-shaped core 168 or zero-shaped core 164. Elliptical X core 148 can accentuate the effort differential experienced by a user when simply rotating bendable pole 102 by 90 degrees, for example, within the user's grip on the grip ends 104A, 104B. No adjustment of the device is needed as there are no switches or levers or dials to engage or manipulate: only the change in position of bendable pole 102 is within the users grip.
The addition of rods 112 increases effort without increasing internal stress upon bendable bar 102 or flex-shell 166, thus preventing buildup of internal stresses that could lead to fracture of the material, such as FRP in extreme bending use. Although the added weight may be from one to a few pounds, the added weight is moving dynamically during exercise forms and actions and a little extra weight can have a substantial effect on overall feel and user experience.
Although comfort cover 156 may take on the shape of the outer surface of flex-shell 156, it may not be as angular as flex-shell 156 because of the nature of its material, such as a closed cell polyurethane foam.
Various cores 172, such as described herein, may be incorporated into the multi-sided bendable bar 102. These variations in core and flex-shell shape can introduce effort differentials in the main bending arc.
In an illustrative embodiment, cassette 402 may hold up to eight rods 112 in cores 404, which may be configured as cylindrical openings. In an exemplary embodiment, rods 112 are 5/16 inch diameter rods, which may be constructed of FRP, for example. Cassette 402, may be, for example, a bendable polyurethane or other flexible plastic material.
Exercise device 400 has a cassette port cover 410 that covers the openings of cores 404 to retain rods 112. Cassette port cover 410 may be configured in any form that retains rods 112 in cores 404, and if user modification of rods is available, also is releasably attached or adjustable.
In an illustrative embodiment, effort levels may be modified by having no rods 112 inserted into cassette 402, or having one to eight rods 112 inserted, which modifies effort levels from approximately 80 to 100 lbs of force to bend the HD or HDX through the a standard range of motion equal to bending to a 24 inch opening of a u-shaped bendable pole. The particular diameter and material of rods 112 will have an effect on forces achieved.
Cassette 402 may be attached to grip end shafts 408. Grip end shaft 408 fits through cassette shaft opening 412. In an illustrative embodiment, grip end shafts may be ⅜ inch diameter stainless steel. Other materials with suitable strength and ability to be securely attached to adjacent components may be used.
In an illustrative embodiment, bendable pole 102 has one or more springs 502 disposed longitudinally along bendable pole 102. A spring spline 504 contains spring(s) 502 wherein the peaks of a sinusoidal spring are positioned within grooves of spring spline 504. A tube 506 is disposed around spring spline 504. Tube 506 may be, for example, a heat-shrink material, such as PVC. In an illustrative embodiment, tube 506 covers the entire length of exercise device 100. The spring spline 504 holds springs 502 in their general orientation around the bar providing a relaxed fit for each spring. If four springs are present, three are not under tension load during a bend; only the spring on the outside or near the outside of a bend develops tension during a bend. The one spring toward the inside would buckle slightly while the ones on the sides of a bend will bend without developing tension.
In an exemplary embodiment, a single rod 112 extends within tube 504 so that spring 502 is positioned between rod 112 and tube 504. A bushing 508 is within a tube 516 between rod 112 and spring attachment component 510. A set screw 512 is attached to spring 502 and engages with threads in spring attachment component 510. A sleeve 514 covers spring attachment component 510, all or a portion of set screw 512, bushing 508 and a portion of spring 502 and rod 112. A comfort cover 156 may be disposed over sleeve 514.
The spring attachment component 510 has shaped notches that match up with the steps of the springs wave form holding springs 502 in place for developing tension over the outside of a bend.
When set screw 512 is tightened by moving it within spring attachment 510 toward bushing 508, the cumulative tension of spring(s) 502 is increased. This increases the base line bending arc effort. If all springs 502 have the same tension value then the main bending arc force of bendable pole 102 will be equal, regardless of the position of end grips 104A, 104B in the user's grip. Only the springs that are oriented toward the outside of the main bending arc during a bend contribute to bondable pole 102's effort range. Tension of spring(s) 102 along the outside of the bending arc is added to the force of the single rod 112.
In an illustrative embodiment, bendable pole 102 includes four springs 502. A user may experience up to four distinctly different effort levels by rotating the end grips 104A, 104B within their grip. A user may feel the differential in effort levels by rotating bendable pole in approximate 90 degree increments. Rotation need not be in precise 90 degree increments to experience the differential. When the bendable pole 102 is equipped with two springs 502 substantially equal in low effort, disposed at 180 degrees apart and two springs 502 that are equal in high effort in the remaining groves, bendable pole 102 will have two very distinct effort levels when turned every 90 degrees. The greater the difference in spring effort, the greater is the difference in the effort felt by the user in bending the bar.
As shown in
In a further illustrative embodiment, exercise device 100 is constructed as a mono element that provides a similar range of motion and effort levels.
The spacer may be a die formed plastic or copolymer extrusion with seven channels sized to contain the six rods in a hexagonal pattern and includes the optionally utilized center seventh channel position.
For example, one or more of the following features may be incorporated into the exercise device:
End grip 104 is configured to remain fixed to bendable pole 102 during use, and even misuse, thereby avoiding exposure of hard or pointed items inside. The firmly attached end grip 104 may add to the dynamic use of the bar by imparting torque potential end to end. This adds character and quality to the various ways exercise device 100 can be used in many individual or group settings.
Further safety features may include, the spacer or other covering being impervious and non-toxic, with the ability to sanitize it with strong cleaning or disinfecting solutions without significant long-term degradation in commercial high use fitness club or school gym environments.
Various embodiments of the invention have been described, each having a different combination of elements. The invention is not limited to the specific embodiments disclosed, and may include different combinations of the elements disclosed, omission of some elements or the replacement of elements by the equivalents of such structures. Each of exercise devices 100, 400, 500 may include any combination of various elements, such as end grips, middle grips, different materials, electronic components and other layer or components that could apply to any of those embodiments. Exercise devices 100, 400, 500 differ mainly in that exercise device 400 has a cassette configuration to impart the bending and resiliency characteristics, and exercise device 500 has one or more springs for that purpose. Exercise devices 100, such as those described with rods 112 or hollow cores also can have any combination of the various elements described herein.
While the invention has been described by illustrative embodiments, additional advantages and modifications will occur to those skilled in the art. Therefore, the invention in its broader aspects is not limited to specific details shown and described herein. Modifications, for example, to dimensions and materials, and incorporation of equivalent components, may be made without departing from the spirit and scope of the invention. Accordingly, it is intended that the invention not be limited to the specific illustrative embodiments, but be interpreted within the full spirit and scope of the appended claims and their equivalents.
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