Abstract: The archery bow has springs in the string system at each limb of the bow. Due to a high spring rate the springs do not deflect appreciably when the bow is drawn but do deflect substantially when the bow limbs pass the at-rest position after being shot. This allows the limbs to overtravel the at-rest position and be cushioned thereby reducing the shock to the bow and its components.

Abstract: An inertial archery bow stabilizer and vibration dampner is disclosed. A stud is rigidly embedded in the archery bow and has an energy disipating rod fixed to and projecting forwardly of the stud. The rod is received within an encapsulating sealed cylinder having an internal chamber filled with a viscous fluid in which the rod is disposed. At its outer end and externally thereof, the cylinder is provided with another stud to which the archer may afix a selected stabilizing weight. The stabilizer is effective to limit bow movement during arrow cast and rapidly dampen and attenuate energy released as characterized by dampened bow vibration.

Abstract: A hand held sure grip slingshot for launching projectiles is provided including a method and apparatus for its manufacture. The preferred embodiment of the slingshot comprises generally a one piece frame and a sling which includes a pair of elastic members detachably connected to the one piece frame and a pouch connected at its ends to the elastic members and intermediately positioned on the sling. The one piece frame is preferably constructed of structural wire and includes a handle commencing at its lower end, looping finger guides intermediately positioned on the frame at the top of the handle, upward extending and separating arms forming with the handle of Y-configuration, and spiral retaining loops at the upper end of the frame at the tops of the upward extending arms. The looping finger guides, adjacent to the top of the handle, comprise apertures, through which fingers of the operator's hand may be insertably positioned to minimize rotation and slipping during use of the slingshot.

Abstract: A compact collar for securing weights to a barbell. The collar utilizes a spring coil, restrained against maximum tightening, thereby setting a minimum internal diameter of the coil. A pair of outwardly extending angularly displaced arms that can be moved towards each other to reduce the tightness of the coil, thereby increasing the internal diameter of the coil and permitting it to slip over the end of a barbell. Once in place, the release of the arms, allows the natural spring tendency to tighten the coil and grip the barbell, thus holding the weights in place.

Abstract: An apparatus for exercising the rotator muscles of the leg of a person. The apparatus has a frame supporting an adjustable seat, a rotatable knee support cradle in which the knee of a user is securely strapped for preventing flexion of the leg at the knee joint, the ankle of the user resting on a rotatable ankle support cradle. The ankle cradle is adjustable in distance relative to the knee cradle. Rotation of the knee cradle is opposed by suspended weights or by any other appropriate energy absorbing device.

Abstract: A spring-actuated plunger in an elongated tube imparts a directional force to a spongy projectile. A gravity release pin for cocking the plunger permits rapid firing. A loading magazine with a releasable spring-loaded ball permits either gravity or manual loading. Dye-impregnated projectiles stun rather than injure would-be attackers and leave an imprint not visible to the naked eye.

Abstract: A variable resistance aquatic exercising device is provided for subjecting arms, legs and associated parts of a user's body to desired degrees of stress as the user moves his arms or legs through a body of water. The exercising device has a handle and a plurality of flat, elongate panels disposed in stacked relation to each other. Each panel has a mounting aperture through its center. A bolt extends through the apertures and adjustably attaches the panels to the handle. Spacers are positioned between adjacent panels to permit fluid flow between the panels and to protect the surfaces of the panels. The exercising device also has a flexible and adjustable mounting strap, disposed opposite the handle and attached to the panels.

Abstract: In a ball throwing machine, especially for squash balls or tennis balls, there is located on the base of a ball storage container a ball separating device in the form of a driven turntable which is arranged so as to be rotatable in a substantially horizontal plane and has on a circumferential circle substantially vertical passages of a width somewhat greater than the diameter of the balls to be separated. The turntable has a thickness corresponding to a multiple of a ball diameter and at the ball delivery point it has a ball stop which is located at a distance equivalent to approximately one ball diameter above the base member and there at least partially blocks the passages and for that purpose extends into a peripheral groove of the turntable. Each passage is located above a discrete base member which is connected to the turntable and rotates together with the turntable and gives way selectively below each passage in the peripheral sector of the ball discharge opening.

Abstract: An exercise apparatus having a frame which includes frame members joined by detachable couplings for adjustability and a cable system having a take-up reel and one or more cable reels around which the cable can be trained are attached to the frame by detachable couplings. A weight carrier is attached to the cable system so pre-selected weights can be placed on the carrier to impose a resistance force to movement of the cable by the user. Auxiliary devices such as a bicycle apparatus and weight bench are also constructed using the detachable couplings and may be utilized with the said exercise device.

Abstract: A weight-lifting apparatus operable by a person for weight training. The apparatus has a frame; a plurality of weights mounted on said frame for generally vertical reciprocal movement from a rest position upwardly against gravity force to an upper position, and downwardly from said upper position under said gravity force to said rest position. The apparatus also has a structure for lifting said weights against said gravity force and lowering said weights under said gravity. A resisting force in addition to said gravity force on the weight is applied to said structure during at least a portion of said downward movement of said weights.

Abstract: An isokinetic muscular exercise mechanism for the human body having an elongated tubular rail (14), a tubular slide member (20) mounted on the rail for sliding movement therealong, and a brake (32) mounted within the tubular slide member adapted to provide substantially higher frictional resistance to sliding movement of slide member in one linear direction along the rail than in the opposite direction thereof. The brake also provides a frictional resistance directly proportional to the linear force applied to the slide member in the one direction. A handle (16) is formed on one end of the tubular rail (14) and another handle (21) is provided on the slide member (20) to permit the device to be gripped by the hands of the user. The device is relatively small, simple and portable.

Abstract: A weight lifting machine is provided with a readily adjustable stop bar for use in arresting the lowering of weights in use. The adjustment mechanism includes manually adjustable latches mounted at each end of the stop bar for engagement with passages formed in the upright frame members of the machine. These latches can be manually engaged by an operator standing in the weight lifting station and suitable slides are provided which cooperate between the stop bar and the upright members to maintain transverse alignment of the stop bar as it is moved vertically with respect to the upright members.

Abstract: An exercising device for simulating climbing includes a frame having a vertically adjustably mounted horizontal platform for varying the height of the platform. Adjustable resisting elements in the form of a sleeve having removable weights are mounted on the user to vary the effort required by the user for stepping up onto the platform.

Abstract: A game tracking device for use in combination with a bow and arrow comprises a tracking line, a canister and a mounting bracket. The canister is mounted to the bow by means of the mounting bracket which is configured to mount the canister at a point laterally removed from the bow. The tracking line is center wound and stored within the canister and is secured at a free end thereof, to an arrow. In this manner, when the arrow is launched, the tracking line is paid out of the canister to track the position of the arrow. An arrow is disclosed herein which is adapted to receive securely the free end of the tracking line.

Abstract: A stabilizer to be attached to the handle raiser of an archery bow is disclosed. The stabilizer includes a pair of laterally extending arms constructed and arranged to be flexible in the shooting direction. Flexing of the arms is mechanically restricted in the shooting direction by the use of a rigid backing overlying a portion of each arm. By mechanically restricting the flexing of the arms, the inertia created is maximized for pushing the archery bow towards the target at release of an arrow.

Abstract: An elongated body is provided for gripping in the hooked fingers of the user's bow string pulling hand and including a front side for opposing the phalanges of the forefingers of the user's hand between the first and second joints thereof and a first end for opposing the thumb of the user. A pair of forwardly outwardly divergent guides are carried by the front side and are slightly spaced apart longitudinally of the body. The divergent guides are spaced from and closer to the first end than the opposite end of the body and releasable bow string engaging anchor structure is carried by the body closely inwardly of the spacing between the guides and shiftably supported from the body for movement between bow string anchoring and bow string release positions. Release structure is carried by the body and operative from adjacent the first body end by the user's thumb for releasing the bow string engaging anchor structure.

Abstract: The disclosure describes a rotator cuff machine comprising an upright support frame having a front, a back and two sides. A handle is connected to a tensioning structure mounted on the upright support frame. The tensioning structure biases the handle such that the handle can be moved forwardly of the support frame under tension. A first body support member is spaced from the upright support frame and contains a first support surface positioned in front of the upright support frame. A second body support member is spaced from the upright support frame and contains a second support surface positioned in front of the upright support frame. The second support surface is spaced laterally of the first support surface and is also spaced vertically above the first support surface such that the arm of a user can rest substantially horizontally on the second body support surface while the user sits on the first body surface.

Abstract: A device for resiliently mounting a pair of stabilizer rods for universal angular adjustment on a bow has a central member fixed to the bow and having a cylindrical portion projecting from each end, a pair of intermediate members each has a bore in one end receiving a cylindrical portion for rotation thereon and an axial slot bifercating it's other end, and a pair of outer end members each having a flat sided portion projecting from one end entering a slot and rotatable on a screw passing transversely through the bifercated end portions and the flat sided projection and threadedly engaged in one bifercated portion so as to prevent rotation when tightened; each of the outer end members having means at the other end for attachment of a stabilizer rod.

Abstract: A gun for firing a resilient loop projectile, wherein the missile is stretched over a frame and discharged by a firing mechanism movable against the bias of on elastic member on an upwardly and rearwardly directed rectilinear path of travel. A combination plunger and rear sight has a forwardly curved surface to lift the loop upwardly off the firing groove to discharge the missile from the gun. The contour of the gun permits rapid movement of a missile from a ready position to a firing position and admits of the simultaneous loading with two missiles for rapid fire. The gun is constructed in a manner to resemble the feel and firing characteristics of a conventional hand gun. The projectiles for the gun comprise a length of elastic tubing having a flexible polyurethane rod joining the tube ends to close the loop and enhance the firing accuracy and durability of the missile. The projectile is made of high visibility material and is floatable to insure recoverability after firing.

Abstract: A multiple-duty leg exercise device is provided which includes a shiftable body-supporting pad respectively positionable in a use and a stowed position so as to permit alternate power hip or power leg exercises by the user. The pad is locked in respective positions by means of a ratchet-like mechanism including a pair of marginal, elongated apertured locking members and corresponding associated pivotal dogs coupled to the shiftable pad. The dogs include inclined forward surfaces which are successively cammed out of the aligned openings during shifting of the pad in one direction, and a trailing surface sequentially engaging the defining margins of the openings during rapid shifting of the pad in the opposite direction, in order to prevent the dogs from passing into the openings. When the pad is stopped in a desired position, gravity-induced pivoting of the dogs into the underlying locking member openings serves to lock the pad in place.