Abstract: A training device for use in teaching techniques for snow boarding, skiing, and the like, includes a carriage including two spaced vertical posts. A tubular arcuate track extends between the posts and forms a segment of a circle lying in an inclined plane. An elongated support member formed, for example, in the shape of a snow board or skis, is secured adjacent a first, lower end to the carriage by a ball and socket mechanism. A guide roller assembly mounted for pivotal movement on the bottom surface of the support member allows a user to move the support member along the arcuate track and to incline the support member from side to side, simulating the edging techniques used in the actual turning of skis or a snow board. A plurality of rollers mount the carriage for translational movement along a linear guide path.

Abstract: A recreational equipment junction box for tubular recreational equipment is disclosed. The junction box is a one-piece molded thin-walled enclosure having a plurality of spaced and opposed sides. At least one side of the enclosure is provided with a closed wall within a tubular ring section of predetermined dimension. The closed wall is capable of being partially removed for receiving a window or capable of being entirely removed for receiving a complementary shaped tube within the tubular ring section for connection to the enclosure. The junction box facilitates the transition of movement in four possible directions, while also enhancing the use of transparent windows in one or more locations as may be desired.

Abstract: An exercise device for exercising the lower body of a person comprising an elongated spring bar which may or may not be provided with weights at the ends. A protective collar is provided centrally of the bar to permit the user to support the bar on the shoulders or on the back. The user springs up and down between an erected and squat position and the bar oscillates in phase with the user's movements such that in the squat position the bar forms a tension arc with the ends pointed downwardly while storing spring energy. As the user begins his upward movement the rebound of the bar adds initially, additional pressure on the participating muscles after which, as the tension is released and the user moves toward an erect position, the further rebound of the bar will enhance the upward movement.

Abstract: An orthopedic device ankle exerciser for rehabilitating and exercising an injured ankle of a pair of feet where each foot has an arch, a heel, toes, and a mid portion and where one foot of the pair of feet has a healthy ankle. The orthopedic device ankle exerciser comprises a foot board, pivot means, and fastening means. The foot board has a central portion, a lower surface, an upper surface opposite the lower surface, a first end, and a second end opposite the first end. The pivot means pivotably and frictionally supports the foot board and the pivot means is fixably and centrally attached to the lower surface of the foot board at the central portion inorder to prevent horizontal translation of the foot board. The fastening means secures the pair of feet to the foot board in selectively fixed side-by-side relation and the fastening means is fixably attached to the upper surface of the foot board proximate the central portion.

Abstract: A rotary torso comprises: a frame with a base, several supporting columns vertically installed on the base, a U shape railing installed a little bit above the supporting columns, and a U shape handle installed at the top of the supporting columns; a hollow box shape rotating arm, with one rotatable end pivot installed by a shaft bearing at the central bottom of a fixed shaft; a rotating plate, with a rotatable central hub, supported at the rotating shaft at the free end of the rotating arm; and a driving structure installed inside the hollow part of the rotating arm.

Abstract: A step exercising machine including a pivotable mounting rack turned around an axial tube on an arched bar of a base frame and a transverse retaining rod disposed on the arched bar, two transverse mounting shafts bilaterally disposed to the pivotable rack, two pedals respectively turned about two opposite ends of a first mounting shaft and supported on a respective hydraulic cylinder and respectively pushed against the retaining rod by a respective downward driving rod, wherein the pivotable rack is turned around the axial tube of the arched bar forwards and backwards alternatively when the pedals are alternatively moved up and down, causing the pedals to oscillate leftwards and rightwards alternatively.

Abstract: A valve sizer having a movable element mounted to the distal end of a shaft. A valve sizing portion includes the movable element so that the valve sizing portion may be adjusted to correspond to a number of different available replacement valve sizes. An indicator mounted to the proximal end of the shaft indicates the valve size corresponding to the outer dimension of the valve sizing portion.

Abstract: A leg exerciser includes two turning disks removable united with the base plate and supplied with adjustable resistance elements, electronic module to measure weight distribution, and stabilizing elements. The base plate furnishes a plurality of horizontal, vertical, and angular positions of each disk providing symmetrical weight bearing of the user imparting rotary movements of each leg independently against resistance.

Abstract: A health improving gymnastic apparatus comprises a fixed frame, a carrier for carrying a body of a user, a rotary handle to be operated by the user getting on the carrier, and a power transmission mechanism. The carrier is provided with a foot holding unit to hold feet of the user. The carrier is rotatably supported by the fixed frame to give a rotary motion about a horizontal axis relative to the fixed frame between a standing position, where the user stands upright with one's feet held by the foot holding unit, and an upside-down position, where the user is suspended one's head down with one's feet held by the foot holding unit. The rotary handle is mounted on the carrier to give a rotary motion about a handle axis. The power transmission mechanism transmits the rotary motion of the rotary handle to the rotary motion of the carrier relative to the fixed frame.

Abstract: A barbell includes a substantially tubular-shaped barbell bar enclosing a device for causing the barbell bar to vibrate, weights attached to each end of the barbell bar and a damping material interposed between the barbell bar and the weights. The damping material prevents the weights from being subject to the vibrations. As a result, vibrations are transmitted to the muscles used for lowering and raising the barbell bar thereby reducing the time expended to train and the tendency to develop a cramp. Furthermore, because the weights are disconnected from the vibrations, the stability of the barbell weight and training arm is not disturbed and the energy consumption of the motor remains low.

Abstract: An exercise thigh weight system that includes a sturdy, semi-rigid, and adjustable waist belt, a right leg harness assembly, right leg harness assembly attaching apparatus, a left leg harness assembly, and left leg harness assembly attaching apparatus. The sturdy, semi-rigid, and adjustable waist belt is adjustably and replaceably positionable around the waist of the wearer. The right leg harness assembly extends vertically downwardly from the sturdy, semi-rigid, and adjustable waist belt and encircles the right thigh of the wearer. The right leg harness assembly has an open-ended and flexible lower weighted strap that is encircles only the lower portion of the right thigh above the right knee with the upper portion of the right thigh being free of any weights disposed thereon, so that resistance is provided for the upper portion of the right thigh when the right leg is flexed.

Abstract: Back-to back hydraulically linked pistons are mechanically coupled to contact probes and measurement sensors. The pistons are hydraulically linked by small diameter flexible conduits which enable the contact probes and the measurement sensors to be mounted and moved independently of each other without affecting the ability of the measurement instrument to simultaneously measure a plurality of points on a selected predefined surface, such as a human tooth. The present invention overcomes the problems associated with the complex mechanical linkages heretofore required in such instruments.

Abstract: A folding collapsible step exercising machine including a base frame having a transverse front bar and transverse rear bar, a front upright pivoted to the transverse front bar of the base frame and locked in a vertical position by lock means, a driving wheel having a fixed wheel shaft revolvably supported on the base frame, a damping wheel turned with the driving wheel, two pedals, two rear pedal links respectively coupled between rear ends of the pedals and two opposite ends of the fixed wheel shaft of the driving wheel, two front pedal links having a respective bottom end pivoted to a front end of one pedal and a respective top end coupled to the front upright by a slip joint and a respective middle part fixedly mounted with a pivot, and two handlebars respectively turned about the pivots of the front pedal links and having a respective bottom end pivoted to the base frame, wherein two hexagonal end caps are respectively eccentrically coupled to two opposite ends of the transverse front bar of the base fram

Abstract: A cervical spine support is described for use in exercises such for abdominal muscle strengthening. The support is formed of a hollow elongate flexible bag which contains a conformable material such as a granular material selected for its ability to conform to the shape of a person's cervical spine. The granular material is capable of flowing during use so as to provide a surface support that is comfortable to the user. Other conformable materials can be used such as a gel or air.

Abstract: An exercise belt 10 to be worn around the waist of a user has a case 14 holding a control switch S1, a switch actuator 22, a battery 16, a vibrator 20, and a motor 18 connected to the vibrator 20 to cause the vibrator 20 to vibrate upon energization of the motor 18 by the battery 16 when the control switch S1 changes states. A light emitting device 28 is attached to the case 14 and positioned to be observed when the belt 10 is worn around the waist of a user. A strap 12 has one end attached to one end of the case 14 and another end connected to the switch actuator 22. This strap 12 is adjustable to fit snugly around the waist of a user, with expansion of the user's waist moving the switch actuator 22 to change the state of the control switch S1, energizing the motor 18, vibrator 20, and light emitting device 28.

Abstract: The invention relates to an ergometric stationary bicycle apparatus which is suitable for training, rehabilitation and diagnostic purposes. The apparatus comprises a base member, a pedal unit arranged on the base and including a hub which is rotatable about a pedal unit axis, and a carrier element connected to the base such that it can pivot relative to the base about an axis parallel to the pedal unit axis. The apparatus also includes a seat unit pivotally connected to the carrier element such that the seat unit and the carrier element may be selectively adjusted into different pivot positions. The pivot axis of the carrier element is disposed proximate the pedal unit axis so that the average distance between the seat surface and the pedal unit axis is essentially equal in the different pivot positions of the carrier element.

Abstract: Arm wrestling apparatus employing two opposed hydraulic dampers to provide resistance. The apparatus has a base and a lever pivotally mounted to the base. Hydraulic circuitry of the dampers may be controlled to vary resistance, and is employed to operate a gauge indicating force of effort. In an alternative embodiment of the invention, two novel arm wrestling devices are employed remotely from one another. Each device is provided with a video display. Radio, telephone or other links connect the displays of the two arm wrestling devices so that observers at either location may monitor a competition between two persons, one at each location.

Abstract: An aquatic exercise device for use by an exerciser standing in a natural or man-made body of water. The device includes containers that fill with water when immersed and which have drainage openings formed in them so that they drain when lifted out of the body of water. The exercise device may include a single container that is lifted from the body of water by a pulley and cable mechanism, or it may include a single container connected to a rigid bar, mid-length of the bar, or it may be provided in the form of a barbell or a dumbbell having water containers at opposite ends of a rigid bar. In all embodiments, the flow rate of water draining from the container or containers may be adjusted to a flow rate selected by the exerciser.

Abstract: The sensor and alarm system for monitoring a relative position of a prosthetic device with respect to the residual portion of an amputee's limb includes a battery power supply; a proximity sensor for generating a position signal indicative of the relative position of the prosthetic device and the residual portion in the prosthetic device near the residual portion, and an alarm device for signaling when the prosthetic device is located in an injurious position or positions.

Abstract: A body exerciser including a base, a connecting seat, a pendulum device, and a beam device. The base is provided with lugs and opposed curved slide tracks at a lower side thereof. The extent of movement of the connecting seat is controlled by a hydraulic lever. The pendulum device is pivotally provided at the lugs of the base and includes a gravity pendulum. The axle of the gravity pendulum is provided with unidirectional sprockets. A pair of pedals are respectively mounted at both ends of the axle. The beam device includes a frame connected to the pendulum device for linking-up movement. The frame has slide wheels at both ends respectively for mounting on the slide tracks of the base. The frame is provided with idle sprockets and chains for driving the unidirectional sprocket. One end of the chain is connected to a spring and secured to the frame. The other end of the chain projects from the frame and connected to a fastening ring to which an attachment ring of a cable may be fastened.