Abstract: A device for safely securing boards for martial arts activities including a board-securing frame arrangement cooperating with a release device which enlarges the board-holding space when a board is struck to be broken, thus avoiding injury to the user which might otherwise occur from the broken board pieces. A pedestal stand is attached to the board-securing frame members so as to support same at a desired position above a floor surface.

Abstract: A skiing simulator which includes a platform formed by an annular peripheral frame defining an opening in which there is suspended a disc. The disc is suspended by tension springs extending between the edge of the disc and the peripheral frame. A pair of openings having parallel longitudinal axes are defined in the disc, and sole plates are adapted to rotate about the longitudinal axes in respective openings. A parallelogram linkage extends between the sole plates to control the parallel rotational movement therof, and a damper is connected between the disc and the linkage in order to provide resistance to the rotational movement of the sole plates. Ski boot bindings are fixed to each of the sole plates for receiving ski boots. A skier utilizing the skiing simulator can simulate forward and rearward tilting as well as translational lateral body movements of skiing.

Abstract: There is disclosed an infant sling which is formed as a generally U-shaped band of flexible sheet material having its upper ends attached to a support. The support can be a vest worn by an adult to provide an infant carrier, or can be a support ring which is suspended from a supporting structure to provide an infant swing. The support ring has substantially the same diameter as the lateral dimensions of the infant. The support ring protects the infant's head, and supports the sides of the sling vertically and substantially parallel to each other, totally enclosing the sides of the infant. The sling also includes a back support band which extends vertically from the support ring to a joined attachment with the fabric band of the sling at its lower rear edges, and has front belting which extends about the waist or diagonally across the chest and lower abdomen of the infant. The sling has a pair of leg openings at its lower end, or bight, and the sides have opposite openings for the arms of the infant.

Abstract: An aquatic exercise apparatus having a main frame with arcuate upper supports which are secured to a pool decking and having lower supports connected thereto. The main frame is provided with a first upper pair and a second lower pair of outwardly projecting arms for user exercise purposes. An exercise platform is pivotally attached to the main frame and is adjustable in any position from vertical to ninety degrees relative to the main frame.

Abstract: A treadmill having an endless belt mounted upon an underlying support surface for rotation thereover, the underlying support surface having a curable coating composition applied thereto to improve the performance and efficiency of the treadmill. The coating composition consists essentially of from about 30 to about 50 volume percent of a polymeric resin, from about 30 to about 60 volume percent of a wax compatible with the polymeric resin, and from about 2 to about 12 volume percent of a particulate constituent selected from the group consisting of metal and melamine. The coating composition can also include a fibrous mat disposed over the underlying support surface of the treadmill.

Abstract: An exercise device including a pair of nonaligned hand grips rotatably mounted on a nonlinear bar and spring biased to provide adjustable resistance to motion through predetermined symmetrical strokes. The device preferably includes detachable auxiliary weights which enable the total weight of the device to be adjusted. The spring biasing force applied to the grips is preferably individually adjustable for each grip.

Abstract: The present invention provides an isokinetic ergometer comprising a movement guide, power gripping points, a brake unit connected therewith and a speed regulator, characterized by the following features:(a) the power gripping points are mechanically connected with a piston movable in a cylinder,(b) a flow regulation valve is attached to the cylinder, and(c) the cylinder and flow regulation valve are hydraulically connected with one another via a pipe, the flow regulation valve regulating the length of the stroke.

Abstract: A piece of equipment for the simulation of skiing movements which comprises a basic structure which can be stably placed on the ground. An arm is hinged to the basic structure in a median position and is able to oscillate horizontally. The arm carries a pair of boards at its end. Feet are connected to the structure to incline it with respect to the ground. The arm is able to carry out a slight vertical oscillation. The boards are restrained to the arm so that they can rotate around their vertical and horizontal axes, the rotation around the vertical axis being limited by suitable means. Two rods overhang and are connected to the arm by pins. The rods are able to rotate around the vertical axis of these pins, such rotation being made synchronous with that of the boards. The rotation is opposite to the direction of oscillation of the arm.

Abstract: An apparatus to allow a leg amputee having only a thigh stump to ride a bicycle comprising a height adjustable shaft assembly having a means rotatably attached to the lower end of the shaft assembly and attachable to the pedal of the bicycle and further having a thigh stump support assembly for attaching the thigh stump to the shaft assembly.

Abstract: An exercise rowing machine has swing-mounted rowing arms with chopper plates at their lower ends which have a series of light-passing ports arranged along an arc to swing through the gaps between the emitters and receivers of a pair of side-by-side light emitter/receiver units. A circuit containing these units is connected to a microprocessor programmed for outputs, such as length and duration of rowing arm strokes, using inputs from the emitter/receiver units.

Abstract: An exercise machine for simulating cross-country skiing is disclosed in which the poling action of the arms and the leg action both drive the same flywheel through a system of overrunning clutches. This provides a more realistic simulation of cross-country skiing than the prior art devices in which the arm motion was independent of the leg action.

Abstract: The invention relates to an arrangement for an exercise device. The arrangement comprises a bogie provided with running rolls for supporting a seat on a rail part. The edges of the rail part are provided with flanges so that the running rolls have room enough between the flanges. The lower flanges are thereby arranged to act as rolling surfaces for the runnng rolls when the bogie is positioned on the rail part. In order that the seat would move reliably on the rail part, a counter roll is provided on both sides of the bogie between the running rolls. The lower edge of the counter roll is arranged to be positioned at a distance from the rolling surface when the running rolls are supported on the rolling surfaces. The upper flanges are provided with counter surfaces which are supported only on the upper surfaces of the counter rolls when the running rolls rise off the rolling surfaces.

Abstract: This walker is designed to be light in weight and fold for compact storage. Primarily, it consists of a U-shaped main frame with wheels for rolling engagement with the ground, and an upper handle portion is provided and is telescopingly received on the main frame, so as to be adjustable for the heights of various individuals. A second pivotal frame is connected to the main frame and is provided for ground support in cooperation with the wheels of the main frame.

Abstract: A trampoline includes a sheet resiliently supported and tensioned by a substantially rigid frame through means of spring-like members positioned about the perimeter of the sheet. The spring-like members are connected to the sheet through means of a compressive fastener adapted to receive a turned-over edge of the sheet. The turned-over edge of the sheet defines a channel in which a filler, such as a cable, is placed. The fastener compressively retains the turned-over edge together with the cable.

Abstract: Apparatus is disclosed for use in the exercise of the human body, which comprises a fiberglass pultruded shape of a predetermined oblong geometry with an extruded rubber compound sheath formed about the exterior thereof over the entire length of the fiberglass pultruded shape. The fiberglass pultruded shape has fiberglass filaments dimensionally stabilized in a hardened resin system. Material properties of the filaments in the resin system are selected such that the ultimate elongation design value of the filaments and the resin system is greater than the actual maximum elongation of the filaments and the resin system when the fiberglass member is flexed in the exercise process. Also, the resin is selected for toughness sufficient to provide a useful flexural fatigue life.

Abstract: A gymnastics apparatus having a support rod and a handle bar movable toward and away from one another against the force of a spring. A connecting rod and a pipe is arranged between the support rod and the handle bar, the pipe surrounding the connecting rod and housing the spring. A spring abutment member which opposes the connecting rod can be adjusted in an axial direction in the pipe and can be fixed relative to the pipe. In order to facilitate, in such a gymnastics apparatus, an adjustment to various body sizes, the invention provides that the connecting rod is connected, if desired hingedly, to the support rod and the pipe to the handle bar.

Abstract: A therapeutic exercising apparatus comprising a main frame having a plurality of rollers disposed therein, a cam connected to a movable rod, a pair of brackets for slidably moving under the rollers, and an adjustable member for controlling the height of one end of the main frame whereby the apparatus treats and massages and is used for adjusting intervertebral disc and articulations clearances.

Abstract: A safety harness on/off switch assembly for a motorized treadmill comprises a support positioned over the treadmill, and a safety harness including a pair of spaced laterally interconnected straps at their upper ends yieldably and flexibly suspended from the support and at their lower ends including a pair of loops to receive portions of the body of a user upon the treadmill. A normally closed safety switch is mounted upon the support and is located in the electrical circuit of the treadmill. When the user faints, falls, or trips, or is injured, his or her body rests upon the straps and opens the safety switch thereby automatically shutting down the motorized treadmill.

Abstract: An exercising apparatus for performing push-ups, etc. on a surface such as a floor, the apparatus having a handle and first and second supports. The first and second supports both have first and second sides for placement of the supports on the surface. The handle can be supported at a first distance from the first side and at a second different distance from the second side. The first and second supports may be oriented to place the first sides on the surface thereby positioning the handle at the first distance from the floor. Alternatively, the first and second supports may be oriented to place the second sides on the surface thereby positioning the handle at the second distance from the floor.

Abstract: An exercise bicycle has a wheel axle which is journalled on a frame. Two swing arms are secured to two opposite end portions of the wheel axle. Two hand operated swing levers are mounted pivotally on the frame at their lower ends. Each of the levers includes an upper lever portion, a lower lever portion, and two parallel rods interconnecting the upper and lower lever portions for defining a slide slot therebetween. Each of the swing arms has a crank pin member on which a sheave is sleeved rotatably. Each of the sheaves has an annular groove of a generally V-shaped cross-section which engages with the arcuated inner side portions of the rods so that the sheave can slide smoothly in the slide slot. A suspended wheel is sleeved rotatably on the wheel axle by a hub. A front pulley is sleeved rigidly on the hub and is connected to a rear pulley by a v-belt. The rear pulley can be indirectly rotated by a user's hands and/or feet.