Abstract: A rowing exercise device in which the heretofore individually operated right and left hand rowing or exercise handles are now, according to the within invention, also optionally operated in unison, by the exerciser gripping a handle-uniting structure connected in spanning relation between the hand grips of the exercise handles, and wherein the handle-uniting structure counter-rotates to obviate slippage in the exerciser's grip.

Abstract: A vertically adjustable leg for stilts of the type utilized by construction workers as, for example, installers of wallboard. The adjustable leg includes upper and lower complementarily vertically slideably interfitted struts. A quick-action lock is interposed between the struts so as to permit the length of the assembled struts to be readily varied and thereby adjust the height of the stilt.

Abstract: An infant play ring comprising a support of concave shape on which an infant can be disposed in supine position. The support has a central region in an arrangement such that the infant on the support extends across the central region. A rotatable turntable is provided at the central region of the support for supporting the infant with capability of rotating on the turntable relative to the support in supine position.

Abstract: A leg exercise orthosis supports the leg of a patient while causing movement of the hip, knee, and ankle joints. The apparatus includes a frame; a femur support; a tibia support which is pivotally connected to the femur support; a double four-bar linkage which connects the frame, the femur support, and the tibia support; and a drive motor connected to the double four-bar linkage. As it is driven by the drive motor, the double four bar linkage guides motion of the femur and tibia supports so that femur support pivots about a virtual pivot axis which essentially corresponds to the pivot axis of the hip joint of the leg.

Abstract: The invention involves an adjustable rest for the feet, and includes a portion which may be used for exercising portions of the feet. The construction is such that it may be folded into a substantially flat configuration to enhance its portablility and to reduce the cost of manufacture and its selling price.

Abstract: The present invention relates to an exercising device and more particularly to one substantially comprising a bicycle frame, a rear wheel, two driven wheels a chain drive arrangement and a base frame wherein the rear wheel is rotatively mounted at the rear end of the bicycle frame; the base frame supports the bicycle frame in a manner such that the rear wheel may rest on the two driven wheels. The major feature of the present invention is that the hub of the rear wheel is eccentrically disposed whereby the saddle of the bicycle frame may perform up-and-down motion while the chain drive arrangement is driven by a rider of the exercising device.

Abstract: A drive system for an exercise apparatus or the like. The system includes a rotatable member mounted on a frame together with a mechanism for rotating the rotatable member through a drive pulley operatively associated with the rotating mechanism and a driven pulley operatively associated with the rotatable member. It also includes an endless belt member drivingly interconnecting the pulleys such that the belt member imparts rotation of the rotating mechanism to the rotatable member through the drive and driven pulleys which occurs because of the fact that an inner surface of the belt member is in driving engagement with the pulleys. The system further includes a component frictionally engaging an outer surface of the belt member in the area in which the inner surface of the belt member is in driving engagement with the drive pulley to impart a resistance to rotation of the rotating mechanism. With this construction, the drive system is suitable for an exercise apparatus or the like.

Abstract: A gymnastic bicycle includes a device for regulating the physical effort necessary for tilting handlebars with respect to a chassis during exercises simulating rowing, together with a vibrator formed by a lever having one end permanently connected to the articulation of the handlebar tube with respect to the chassis. The other end of the lever has a roller capable of contacting a polygonal surface which rotates as a result of pedalling. The polygonal surface forms part of or is closely linked to an inertia flywheel which constitutes a power accumulator and pedalling regulator. Contact or separated positions of the roller with respect to the polygonal surface are obtained by a control knob fixed to a shaft provided at its free end with two axially spaced surfaces which, on rotation of the knob and shaft, alternately contact a plate, thereby pivoting the lever with respect to the chassis of the bicycle.

Abstract: A continuous passive motion apparatus for improving the healing of patients from operation of the limbs includes a base support plate with a thigh support member pivotally connected to the base and a lower leg support member pivotally connected to the outer end of the thigh support member with flexible drive links connected respectively to the outer ends of the thigh support member and lower leg support member and to a drive variable speed motor having a variable length crank arm with means in the form of pulleys for specifically adjusting and altering the direction of motion of the flexible drive links. The speed and length of the motions can be separately and independently adjustable by selective adjustment of the drive motor, crank arm and the respective drive links. An alternate embodiment utilizes a guide track in place of one link for guiding the outer end of the thigh support member.

Abstract: A sparring partner who may be a trainer or another boxer dons and grasps a novel boxer training aid in the form of a padded plate. The plate has a torso-conforming forwardly moderately-convex central portion, flanked at the sides and top with obliquely forwardly projecting wings which have a tendency to focus the boxer's blows on the central portion. A fairly narrow slot is provided between the two padded wings at the top, so that the sparring partner may observe the boxer's technique in close proximity to the body, without risk of receiving a blow to the head. By preference the padded plate is worn by use of a set of bandolier-like straps, and held by use of a pair of handles secured on the backs of the side wings.

Abstract: An exercising device of the type designed to cause movements of predetermined, designated limb portions about a predetermined joint wherein first and second brace assemblies are designed to be mounted in at least partially gripping relation to limb portions on opposite sides of designated joints. A driving means including a drive motor and gear assembly drives an action arm in a substantially reciprocal path of travel so as to cause selected movement of one brace assembly relative to the other brace assembly about a predetermined joint without the patient exercising muscle control or coordination. A control assembly as well as the drive motor and gear assembly are housed as a contained unit and removably mounted on one of the brace assemblies in such a manner as to be movable therewith so as to allow ambulatory movement of the patient during the exercising period.

Abstract: An energy absorber module usable with a variety of exercising machines and including an air displacement fan which is driven by a pair of pull cords through a one way clutch. The fan is contained within a housing secured to the frame of the module and the pull cords extend through guide holes in a face board also secured to that frame. The pull cords are wound upon drums which drive the fan when rotated in one direction, but which are freely rotatable in the reverse direction because of the clutch. A return cord is also wound upon each drum, but in the reverse direction to the pull cords, and is connected to a return spring for causing reverse rotation of the drums. A signal proportional to the rotational speed of the fan is processed through an electronic circuit to provide appropriate work information on a meter or recorder. The pull cords can be selectively engagable with other guide means according to the type of machine with which the module is to be used.

Abstract: An exercise device that includes a pair of handles joined by an elongated flexible tube. The flexible tube includes a weighting material and the tube is formed from a longitudinally resilient elastomeric material so that as the exercise device is turned about a person, a variable moment arm is produced between the center of gravity of the weighting material and the handles.