GRIP FACILITATING HANDLE

Abstract: Disclosed are improved handles (200) applicable to a wide variety of apparatuses, equipment and devices found in industry, commerce, in the home, or for exercise or recreational purposes. The improved handle (200) may be fashioned integrally with the apparatus or as a retrofit attachment therefor. In using the handle (200), the person's hand is inserted through an opening (204) and into a chamber (203) formed between the inner and outer walls (201,202) of the handle (200). The palm of the person's hand substantially rests on the convex inner surface (206) of an inner wall (201) of the handle (200), while the back of the person's hand substantially confronts the concave inner surface (207) of the outer wall (202). With this arrangement, the user's hand is maintained substantially in a curved natural "at rest" position, rather than being tightly closed, so that a forceful grip is no longer necessary. As a result, the human effort and energy required to manipulate or control the associated apparatus, equipment or device is substantially reduced, thereby substantially reducing the fatigue normally associated therewith. Moreover, in certain applications (such as portable power tools (246)) the handles (200) provide an enhanced safety feature.

Description: The present invention relates to handles for a variety of apparatuses, such as exercise devices, barbells, and stationary exercise machines and equipment, as well as hand tools, portable power tools, stationary power tools, earth-moving equipment, motorcycles, devices for assisting handicapped and temporarily disabled persons, etc. Background Of The Invention In United States Letters Patent Nos. 4,813,669 and 4,896,880 there was disclosed and claimed improved exercise devices for strengthening the targeted muscle of a user. The exercise devices had a weight means associated therewith, such that a forceful grip of the user's hand on the weight means was not necessary, and such that the necessity for employing the user's conjunctive adjoining muscles was substantially reduced. In this fashion, the tendency to detract from the development of the user's targeted muscle is substantially reduced. In other prior art exercise devices, the gripping and grasping action with the hand automatically employed the conjunctive muscles of the arm, including the forearm, tricep and deltoid; and the same problem was encountered for the exercise and strengthening of other muscles in the body. Unfortunately, each of the apparatuses and devices resorted to in the prior art for developing a specifically targeted muscle (such as the bicep) provided for some sort of handle which had to be gripped and/or grasped by the user thereof. This gripping and/or grasping action required by each of these devices was a definite disadvantage, since it involved the use of conjunctive muscles which prevented the isolation required for the total development of the targeted muscle. More specifically, every piece of exercise equipment or mechanical apparatus heretofore resorted to in the prior art invariably contained one common detractive denominator inherent within its design. Whatever else was intended --- whether barbell, dumbbell, or one of the various exercise machines designed for total fitness --- there existed some sort of handle which had to be grasped in order to use the device. Quite clearly, one was required to hold onto the handle to make the device work. This action of holding the handle automatically and necessarily employed the conjunctive (adjoining) muscles. Such "helper" muscles actually took away from the isolation required for full development of any specifically targeted muscle. This detractive denominator occurred because of the physiological structure of the human body. A precise interface of cardiovascular, neural-nervous system, respiratory, and muscular function was adequate to carry the average person through their normal daily activity. However, this interface was simply not sufficient to create an above average (or dynamic) physique. Combined with the time constraints that typically discourage regular exercise, the obvious result was a rather large population group composed of "ordinary" (somewhat less than splendidly developed) individuals. Thus, it will be appreciated that there remained a need for an exercise device for strengthening a user's targeted muscle; wherein the device was capable of being utilized by the user, such that a forceful grip was not required by the user; and wherein the necessity for employing the user's conjunctive adjoining muscles was substantially reduced, thereby substantially reducing the tendency to detract from the development of the user's targeted muscle. The aforesaid United States patents (Patent Nos. 4,813,669 and 4,896,880) fulfilled this need by eliminating the serious disadvantage and deficiency of handles as they relate to exercise devices. However, similar problems have been encountered in the handles employed in a variety of apparatuses, such as stationary exercise machines, as well as hand tools, portable power tools, stationary power tools, earth-moving equipment, motorcycles, devices for assisting handicapped or temporarily disabled persons. Indeed, any apparatus having a handle which normally requires a forceful grip to be employed on the handle in the manipulation or control of the apparatus has this problem. In these apparatuses, the force required to grip the handle naturally contributes to the fatigue normally associated with the use and operation of the particular apparatus. Unfortunately, the devices of United States Patent Nos. 4,813,669 and 4,896,880 are not readily adaptable for use on devices other than the exercise devices described therein. Thus, it will be further appreciated that there still remains a need for a handle for such devices wherein the device is capable of being utilized by the user, such that a forceful grip is not required by the user; and wherein the necessity for employing the user's conjunctive adjoining muscles is substantially reduced, thereby substantially reducing the tendency to detract from the development of the user's targeted muscle. Summary Of The Invention Accordingly, it is an object of the present invention to alleviate the deficiencies and disadvantages of the prior art by providing a handle for an apparatus, wherein the user's hand is in a curved natural "at rest" position within the handle rather than being tightly closed around the handle, such that a forceful grip is not required, thereby reducing the effort required to manipulate or control the apparatus, and thereby reducing the fatigue normally associated therewith. It is another object of the present invention to provide a handle for an apparatus which is either integrally assembled with the apparatus or else is provided as a removable retrofit attachment for an existing handle of the apparatus. In carrying out the objects of the present invention, one embodiment thereof constitutes an exercise device for strengthening a user's targeted muscle which is capable of being utilized by the user thereof, such that the necessity for employing the user's conjunctive adjoining muscles is reduced, thereby reducing the tendency to detract from the development of the user's targeted muscle. The present invention also provides a handle (or handles) for a stationary exercise machine, wherein a forceful grip is not required on the handle (or handles) thereby improving the development of the user's targeted muscle (or muscles) using the stationary exercise machine. In accordance with the teachings of the present invention, there is herein disclosed and claimed, a handle for the manipulation or control of an apparatus. The handle is unitary and has respective inner and outer walls defining a chamber therebetween. The handle has an opening formed therein that communicates with the the chamber. Through this opening the user's hand is disposed extending into the chamber between the inner and outer walls of the handle. The inner wall has a convex inner surface on which the palm of the user's hand rests during use thereof. The outer wall has a concave inner surface which the back of the user's hand congronts during use. With this arrangement, the user's hand is in a curved natural at rest position rather than being tightly closed, thereby reducing the effort required to manipulate or control the apparatus, and thereby reducing the fatigue normally associated therewith. The handle further has a pair of parallel side walls joining the inner and outer walls. The handle is characterized in that the handle is adapted for use with an apparatus and further in that each of the side walls is provided with an indentation in which the user's thumb may rest, and which indentations in the respective side walls facilitate use of the handle by either right-handed or left-handed users. In certain applications, each indentation may be provided with a protective shroud for improved safety considerations. Preferably, the outer wall further has a convex outer surface; the inner and outer walls are joined together at an outer extremity of the handle, and the chamber gradually narrows in height between the inner and outer walls of the handle in the direction from the opening in the handle to the outer extremity thereof. For certain applications, the outer wall may be provided with a plurality of ventilation openings. In the preferred embodiment, the convex inner surface of the inner wall, and the concave inner surface of the outer wall, are each provided with a padding or cushioned layer. The cushioned layer may be continuous and have a uniform cross-section, if desired. In the preferred embodiment, the inner wall further has a continuation thereof extending past the opening in the handle and including a concave portion, such that the heel of the user's hand adjacent to the palm thereof may rest against the concave portion of the continuation of the inner wall. The handle may be integrally formed with its associated apparatus or device; and, alternately, the handle comprises a retrofit attachment to an existing handle of the apparatus, together with means for removably securing the attachment to the existing handle of the apparatus. Preferably, the means for removably securing the attachment to the existing handle of the apparatus comprises a C-clamp secured to the inner wall of the attachment and projecting away from the attachment. The C-clamp has a convex surface which is substantially nested within the concave inner surface of the inner wall of the attachment. The C-clamp further has a pair of legs straddling the handle of the apparatus, and means are provided for tightening the legs of the C-clamp on to the handle. Preferably, a longitudinal key is formed on the inner wall of the attachment, and the existing handle is provided with a plurality of circumferentially-spaced longitudinally-splined keyways for cooperation with the longitudinal key on the attachment, such that the attachment may be secured on the existing handle in a selected circumferentially-adjusted position. In one embodiment, the convex inner surface of the inner wall is formed on an arc, the center of which is substantially coincident with the longitudinal center of the existing handle. However, the convex outer surface of the outer wall is formed on an arc which is eccentrically disposed with respect to the longitudinal center of the existing handle. Thus it will be appreciated by those skilled in the art that the teachings of the present invention are equally applicable to a wide variety of apparatuses, equipment and devices, including the following: exercise devices, such as dumbbells and barbells; stationary exercise machines, such as weight training machines, exercise bicycles and the like; stationary horizontal bars on which exercises or gymnastics are performed; devices for assisting handicapped or temporarily disabled persons; portable power tools, such as a chain saw; hand tools, such as a hand plane; stationary power tools, such as a drill press; earth-moving equipment, such as a bulldozer; motorcycles; etc. These and other objects of the present invention will become apparent from a reading of the following specification, taken in conjunction with the enclosed drawings. Brief Description Of The Drawings Fig. 1 is a perspective view of the improved handle of the present invention, shown as an attachment for an existing handle, and with the securing means partially removed for ease of illustration. Fig. 2 is a longitudinal section thereof, taken along the lines 2-2 of Fig. 1, showing the user's hand in its curved natural at rest position within the handle, such that a forceful grip on the existing handle is not necessary, and further showing the means for removably securing the handle to an existing handle of an apparatus. Fig. 3A is a portion of Fig. 2, showing how the handle may be attached to an existing handle, using a longitudinal key on the handle and cooperating with one of a plurality of circumferentially-spaced longitudinal keyways or splines on the handle (or on an adapter sleeve attached thereto) thereby facilitating easy interlocking and adjustment of the improved retrofit attachment handle of the present invention. Fig. 3B is a further portion of Fig. 2, showing the use of ventilation openings within the handle, if desired. Fig. 4 corresponds to Fig. 2, but illustrates (schematically) how the improved handle of the present invention may be integrally fashioned with an apparatus, equipment or device, rather than being a retrofit attachment for the existing handle of an apparatus, equipment or handle. Fig. 5 is a cross-sectional view, taken along the lines 5-5 of Fig. 2 and omitting the user's hand for ease of illustration, and showing the respective indentation in each side wall of the handle, such that the user's thumb may rest conveniently in an indentation, and such that the handle may be used by either the right hand or the left hand. Fig. 6 is a perspective view, showing how a pair of handles (as shown in Figs. 1-3) may be removably secured to a conventional barbell. Fig. 7 shows how the exercise devices of the present invention may be used to form a barbell. Fig. 8 is a pictorial view, taken along the lines 8-8 of Fig. 7 and drawn to an enlarged scale, and showing how the device of the present invention would be used when the barbell of Fig. 7 is being raised by the user. Fig. 9 is a further pictorial view, taken along the lines 9-9 of Fig. 7 and drawn to an enlarged scale, and showing how the device of the present invention would be used when the barbell of Fig. 7 is being lowered by the user. Fig. 10 is a side elevational view, showing how the improved handles of the present invention may be applied to the hand grips of a typical stationary exercise machine, the latter being shown schematically for ease of illustration. Fig. 11 shows how the user's left hand would be positioned within the improved handle of the present invention, when using the exercise machine of Fig. 10. Fig. 12 shows how the user's right hand would be positioned within the improved handle of the present invention, when using the exercise machine of Fig. 10. Fig. 13 is a perspective view of a conventional exercise machine, showing how the teachings of the present invention are applied thereto. Fig. 14 is a perspective view of a further conventional exercise machine, showing how the teachings of the present invention are applied thereto. Fig. 15 is a perspective view of a still further conventional exercise machine, constituting a stationary bicycle, showing how the teachings of the present invention are applied thereto. Fig. 16 is a side elevation of a stationary bar (shown schematically) having a pair of handles and on which exercises or gymnastics may be performed, showing how the improved handles of the present invention may be applied thereto. Fig. 17 is an enlarged top plan view of a portion of Fig. 16, showing the user's right hand positioned within the improved handle. Fig. 18 is an enlarged top plan view of a portion of Fig. 14, corresponding to Fig. 16, but showing the user's left hand positioned within the improved handle. Fig. 19 is a pictorial view of the exercise device of the present invention showing how the device has an aperture formed therein for external viewing of a digital display, the display being connected to a microprocessor with associated memory contained within the exercise device itself. Fig. 20 is a pictorial view showing how the improved handle of the present invention may be applied to a device for assisting handicapped or temporarily disabled persons, the device in Fig. 18 constituting a crutch (for example). Fig. 21 is a pictorial view of a typical power tool, in this case a chain saw, showing the improved handles of the present invention applied thereto, and further showing respective shrouds over the indentations, thereby providing improved safety as well as comfort and convenience in using the chain saw. Fig. 22 is a pictorial view of a typical hand tool, in this case a hand plane, showing the improved handles of the present invention applied thereto. Fig. 23 is a pictorial view of a typical stationary power tool, in this case a drill press, showing the improved handle of the present invention applied thereto. Fig. 24 is a pictorial view of a typical piece of earth-moving equipment, in this case a bulldozer, showing the improved handles of the present invention applied thereto. Fig. 25 is a pictorial view of a motorcycle, showing the improved handles of the present invention applied thereto. Fig. 26 is a top plan view of an improved handle of the present invention, with parts broken away to illustrate a plurality of finger-tip sensors together with a visual display. Description Of The Preferred Embodiments The Improved Handles For A Variety Of Apparatuses With reference to Fig. 1, there is illustrated an improved handle 200 of the present invention. This improved handle 200 may be incorporated integrally on a particular device or apparatus, or provided as a removable retrofit attachment for the existing handle of the device or apparatus, consonant with the teachings of the present invention. With reference again to Fig. 1, and with further reference to Figs. 2 and 3, the improved handle 200 of the present invention is substantially unitary and has an inner wall 201, an outer wall 202, and a chamber 203 defined therebetween. Preferably, the handle 200 may be integrally molded from a suitable plastic material (such as a polycarbonate) or, if desired, may be fabricated from any suitable material. The handle 200 further has an opening 204 formed therein and communicating with the chamber 203 for providing access for the user's hand, the latter being denoted at 205. As shown more clearly in Fig. 2, the user's hand 205 is disposed in the chamber 203 between the inner wall 201 and the outer wall 202 of the handle 200. Viewed from within the chamber 203, the inner wall 201 has a convex inner surface 206, and the outer wall 202 has a concave inner surface 207. Preferably, each surface 206 and 207 is provided with a padding or cushioned layer 208. As shown, the padding 208 is continuous and has a uniform cross-section. However, if desired, the padding 208 may be discontinuous (or interrupted) and may have a non-uniform cross-section. Also, depending upon the use of the handle 200, the padding 208 may not be absolutely necessary. With this arrangement, the palm 209 of the user's hand 205 substantially rests on the convex inner surface 206 of the inner wall 201, and such that the back 210 of the user's hand 205 substantially confronts the concave inner surface 207 of the outer wall 202. Depending upon the size of the particular user's hand, the size of the handle 200, and the specific application of the handle 200 and its mode of use in a particular apparatus or device, the back 210 of the user's hand 205 may (or may not) touch the padding or cushioned layer 208 on the inner concave surface 207 of the outer wall 202. Accordingly, the user's hand is substantially in a curved natural "at rest" position --- rather than being tightly closed as is normally required in gripping a handle of the prior art --- thereby substantially reducing the effort required to manipulate or control the apparatus associated with the handle 200, and thereby substantially reducing the fatigue normally associated therewith. As shown schematically in Fig. 4, the improved handle 200 of the present invention may be fashioned integrally with an apparatus, equipment or device (or as a retrofit attachment as hereinafter described). With reference again to Fig. 2, and viewed externally of the handle 200, the outer wall 202 further has a convex outer surface 211; and the inner wall 201 and the outer wall 202 are joined together at an outer extremity 212 of the handle 200. Thus, the chamber 203 gradually narrows in height between the inner wall 201 and the outer wall 202 of the handle 200 in the direction from the opening 204 to the outer extremity 212 of the handle 200. The handle 200 further has a pair of substantially parallel side walls 213 joining the inner and outer walls 201 and 202, respectively, as shown more clearly in Fig. 3. Each of the side walls 213 is provided with a "dimple" or recessed indentation 214, such that the thumb 215 of the user's hand 205 may rest in an indentation 214 of a respective side wall 213, and such that the pair of indentations 214 in the respective side walls 213 facilitate use of the handle by either the right hand or the left hand of a person. The inner wall 201 further has a continuation 216 thereof extending past the opening 204 in the handle 200 and including a substantially concave portion 217, such that the heel 218 of the user's hand 205 (adjacent to the palm 209 thereof) may rest against the concave portion 217 of the continuation 216 of the inner wall 201. When the handle 200 of the present invention is fashioned as an attachment to the existing handle 219 of an apparatus, as shown more clearly in Fig. 2, a means 220 is provided for removably securing the handle 200 to the existing handle 219 of the apparatus. Preferably, this means 220 includes a C-clamp 221 secured to the inner wall 201 of the attachment handle 200 and projecting outwardly therefrom. If desired, the C-clamp 221 may be integrally molded with the attachment handle 200. The C-clamp 221 has a convex surface 222 which is substantially nested within the concave outer surface 223 of the inner wall 201. The C-clamp 221 has a pair of legs 224 straddling the existing handle 219 of the apparatus, and a screw 225 (or other suitable fastening means) is provided for tightening the legs 224 of the C-clamp 221 on to the existing handle 219. It will be appreciated, however, that the C-clamp 221 is exemplary of a wide variety of attachment means, and that other attachment means are equally applicable consonant with the teachings of the present invention. With reference to Fig. 3A, the C-clamp 221 may be provided with a longitudinal key 221A cooperating with a selected one of a plurality of circumferentially-spaced longitudinal splines or keyways 219A formed in the existing handle 219, thereby facilitating the selected circumferential indexing or adjustment of the retrofit handle 200 with respect to the existing handle 219, and thereby accommodating the needs of different uses on various apparatuses or devices and under various modes of operation thereof. With reference to Fig. 3B, the outer wall 202 of the handle 200 may be provided with a plurality of ventilation openings 202A formed therein, thereby alleviating any build-up of heat within the chamber 203 in the use of the handle 200 of the present invention in certain circumstances. Preferably, the convex inner surface 206 of the inner wall 201 is formed on an arc 226 (see Fig. 3A) the center of which is substantially coincident with the longitudinal center 227 of the existing handle 219. On the other hand, the convex outer surface 211 of the outer wall 202 is formed on an arc 228 (see Fig. 4) which is eccentrically disposed with respect to the longitudinal center 227 of the existing handle 219. Thus it will be appreciated that the improved handle 200 of the present invention --- whether provided as a retrofit attachment for the existing handle of an apparatus or else integrally formed or mounted therewith --- enables the user of the associated apparatus, device or equipment to control and manipulate the apparatus, device or equipment in a convenient and facile manner, requiring less force. A tight or forceful grip is not required, thereby substantially reducing the fatigue normally associated with the operation of the apparatus, device or equipment. Application Of The Improved Handles To Exercise Devices, Equipment And Machines With reference to Figs. 6-19, there is illustrated (pictorially and schematically) a variety of devices, equipment and machines intended for exercise, gymnastics and related body building purposes, with which the teachings and benefits of the present invention may find particular utility. Thus, in Fig. 6, a pair of the handles 200 of the present invention are removably secured to the shank 229 of a conventional barbell 230 having weights 231 at the extremities thereof. In Figs. 7-9, the handles 200 are integrally formed within respective weighted exercise devices 232 mounted on opposite ends of a shank 233. In Figs. 10-12, the handles 200 are part of a stationary exercise machine 234 (shown schematically). Fig. 13 shows the handle 200 of the present invention on a stationary exercise machine 235 known in the industry as a cable pulley machine. Fig. 14 shows the handle 200 of the present invention on another stationary exercise machine 236, known in the industry as an abdominal trunk curl. Fig. 15 shows the handles 200 of the present invention on yet another stationary exercise machine 237, constituting a stationary exercise bicycle. Figs. 16-18 show the handles 200 of the present invention applied to a stationary horizontal bar 238 (shown schematically) on which various exercises or gymnastics may be performed, such as "dips". In Fig. 19, a weighted exercise device 239, within which the handle 200 of the present invention is integrally fashioned, is provided with an opening 240 for externally viewing a screen or display 241 within the exercise device 239. The screen or display 241, which may be digital or analog or both, is connected to a programmed microprocessor (not shown) within the exercise device 239 and having a memory associated therewith, thereby providing the user with a convenient read-out of the amount of exercises performed with the device 239. Moreover, with the proper pick-up devices on the user's wrist (or other parts of the body) a read-out of the user's blood pressure, pulse rate or other body parameters may be displayed on the screen 241. A voice-responsive mechanism may also be employed, if desired, to alert the user. Application Of The Improved Handles To Devices For Handicapped Or Temporarily Disabled Persons In Fig. 20, the handle 200 of the present invention has been applied to a crutch 242 to enable a handicapped or temporarily disabled person to use the crutch more comfortably and conveniently. The crutch 242 is representative of a wide variety of devices for handicapped or temporarily disabled persons, with which the teachings of the present invention may find particular utility. Application Of The Improved Handles To Power Tools In Fig. 21, the handles 200 of the present invention are applied, respectively, to the overhead bail handle and the rearward end handle of a chain saw 243 having a driven saw chain 244 mounted on a bar 245 projecting forwardly of the chain saw 243. In Fig. 21, the indentations 214 for the user's thumb 215 have been provided with shrouds 214A for further safety reasons. Thus a pair of shrouds 214A have been provided, one on each side of the handle 200, and substantially 180° opposed. The handles 200 contribute substantially to the ease and comfort of operating the chain saw 243, and maintaining control thereof, while also providing an enhanced safety feature for the operator's hands in the event of "kick back" of the chain saw 243. The chain saw 243 is thus indicative of the wide variety of portable power tools and appliances (driven electrically, pneumatically or hydraulically) with which the teachings of the present invention may find particular utility. Application Of The Improved Handles To Hand Tools In Fig. 22, the handles 200 of the present invention have been applied to the forward and rearward handles, respectively, of a hand plane 246. The hand plane 246 of Fig. 60 is shown being used by a left-handed person. However, the rearward handle 200 may be easily removed, if desired, and replaced with a suitable handle (or "flipped over") for use by a right-handed person. The forward handle 200 (as previously noted) is ambidextrous. Thus the forward handle 200 can be integral and the rearward handle 200 made replaceable. The hand plane 246 is indicative of a wide variety of hand tools and implements, with which the teachings of the present invention may find particular utility. Application Of The Improved Handles To Stationary Power Tools In Fig. 23, the handle 200 of the present invention has been applied to a drill press 247, which is indicative of the wide variety of stationary power tools, machines and equipment with which the teachings of the present invention may find particular utility. Application Of The Improved Handles To Earth-Moving Equipment In Fig. 24, the handles 200 of the present invention has been applied to a piece of earth-moving equipment, in this case a bulldozer 248, which is indicative of the wide variety of tractors, off-the-road machines and other pieces of heavy equipment, with which the teachings of the present invention may find particular utility. If desired, heating elements may be disposed within the handle 200 for outdoor usage during inclement weather; the heating elements may be controlled by an off/switch (not shown) and may be powered by a battery or solar energy or by the electrical power supply within the equipment itself. Application Of The Improved Handles To Motorcycles In Fig. 25, the handles 200 of the present invention have been applied to the conventional hand grips of a motorcycle 249. The motorcycle 249 is indicative of the wide variety of bicycles, snowmobiles or other forms of transportation, with which the present invention may find particular utility. In the motorcycle application, it will be appreciated that suitable sensors (not shown) would be provided with the handle 200 for control of the motorcycle 249. Improved Handles With Sensors And Microprocessor Controls In Fig. 26, there is illustrated an improved handle 200 of the present invention which is equipped with finger-tip sensors 250 which are inputted to a microprocessor or microcomputer means having an associated memory (not shown) and a visual display 251. This embodiment of the invention could be useful in a variety of applications, such as in the motorcycle 249. Advantages, Benefits And Features Of The Improved Handles Of The Present Invention With the handles of the present invention, the user's hand is in substantially a curved natural "at rest" position, rather than being tightly closed. Thus a forceful grip is not required, as is the case with the conventional handles or hand grips habitually resorted to in the prior art. Using the improved handles of the present invention, it is much easier and more comfortable and convenient to use, operate and control the particular apparatus, equipment or device associated with the handle. The human effort and energy required for manipulation or control of the apparatus, equipment or device is substantially reduced, thereby reducing the fatigue normally associated therewith. Additionally, and in certain applications, the safety considerations are enhanced. Finger-tip sensors and analog/digital read-outs are also available. The handles may be employed either integrally or as retrofit attachments, and the handles are equally applicable to a wide variety of apparatuses used in industry, commerce, in the home, or for exercise and recreational purposes.

Claims: A handle (200) for an apparatus, the handle (200) being unitary and having respective inner and outer walls (201, 202) defining a chamber (203) therebetween, the handle (200) having an opening (204) formed therein and communicating with the chamber (203) through which opening (204) the user's hand is disposed extending into the chamber (203) between the inner and outer walls (201, 202) of the handle (200), the inner wall (201) having a convex inner surface (206) on which the palm of the user's hand rests during use thereof, and the outer wall (202) having a concave inner surface (207) which the back of the user's hand confronts during use, the user's hand being maintained by surfaces (206, 207) in a curved natural at rest position rather than being tightly closed, thereby reducing the human effort and energy required to manipulate or control the apparatus, and thereby reducing the fatigue normally associated therewith, and the handle (200) further has a pair of parallel side walls (213) joining the inner and outer walls (201, 202), the handle (200) characterized in that the handle (200) is adapted for use with an apparatus, and in that each of the side walls (213) is provided with an identation (214) in which the user's thumb may rest and which indentations (214) facilitate use of the handle (200) be either right-handed or left-handed persons. A handle according to claim 1, characterized by a shroud (214A) on the handle (200) which shroud covers each identation (214). A handle according to claim 1, characterized in that the handle (300) is an integral part of the apparatus. A handle according to claim 1, characterized in that the handle (200) is adapted for use as an attachment to an existing handle (219) of the apparatus, and wherein means (220) are provided for removably securing the attachment (200) to the existing handle (219) of the apparatus. A handle according to claim 4, characterized in that the means (220) for removably securing the attachment to the existing handle (219) of the apparatus comprises a C-clamp (221) secured to the inner wall (201) of the attachment and projecting away from the attachment the C-clamp (221) having a convex surface (222) which is nested within the concave inner surface ( 223) of the inner wall (201) of the attachment, the C-clamp (221) having a pair of legs (224) straddling the handle (200) of the apparatus, and means (225) for tightening the legs (224) of the C-clamp (221) onto the handle (200). A handle according to claim 4,characterized by a longitudinal key (221A) on the inner wall (201) of the attachment (200), and the existing handle (219) being provided with a plurality of circumferentially-spaced longitudinally-splined keyways (219A) for cooperation with the longitudinal key (221A) on the attachment (200) to secure the attachment (200) on the existing handle (219) in a selected circumferentially-adjusted position. A handle according to claim 1, characterized in that the apparatus is a hand-held exercise device (239) having disposed therein a programmed microprocessor, a memory means associated therewith and a display (241) connected to the microprocessor and viewable externally of the exercise device (239). A handle according to claim 7, characterized in that the hand-held exercise device (239) further includes an audio output responsive to the microprocessor.

Inventors: CARUTHERS, SCOTT
Applicants: DAR PRODUCTS CORPORATION
Application year: 1990
Main classification: A63B23
IPC codes: A61H3, A63B24, A63B23