Abstract: A training apparatus including an operation part to which a load is applied for performing a training of a front deltoid muscle, a pectoralis major muscle and a triceps brachii muscle. The training apparatus includes a pair of armrests on which trainee's forearms are to be rested, and a pair of grips provided to the operation part and having lower end sections. In the training apparatus, the armrests have surfaces on which the trainee's forearms are to be rested, at a height of the lower end sections of the grips.

Abstract: A training apparatus for training a gluteus maximus muscle. The training apparatus includes a load application device for producing a certain load. A seat section is provided for supporting a body of a trainee. A pivotally operative arm section is provided to receive the load produced by the load application device. A step is provided attached to the arm section, for resting a sole of the trainee thereon. The trainee is able to train the gluteus maximus muscle by repeating extending and bending actions of a leg while lying down on the seat section and resting the sole on the step. In this training apparatus, the step is rotated in linkage with a pivotal operation of the arm section.

Abstract: A training apparatus for performing a training of a rectus abdominis muscle. The training apparatus including an operation arm supported to be swingable by receiving a contact pressure from an arm of a user. A rotary section is provided carrying a load of a weight stack and supported to be rotatable by a swing of the operation arm. A seat section is provided to be swingably supported. A push section is provided to be swingably supported, and arranged to swing the seat section while supporting the seat section at a lower end portion of the seat section. In the training apparatus, the push section swings in one of a first state uncooperative with a rotation of the rotary section and a second state cooperative with the rotation of the rotary section.

Abstract: A training apparatus including an operation part to which a load is applied for performing a training of a front deltoid muscle, a pectoralis major muscle and a triceps brachii muscle. The training apparatus includes a pair of armrests on which trainee's forearms are to be rested, and a pair of grips provided to the operation part and having lower end sections. In the training apparatus, the armrests have surfaces on which the trainee's forearms are to be rested, at a height of the lower end sections of the grips.

Abstract: An apparatus for training a waist portion of a human body is disclosed. In the apparatus, sprockets are installed on a portion on which a trainer sits and on another portion which his hands grasp, a drive chain extends between the sprockets so as to drive the sprockets in mutually opposite directions. Therefore, transmission loss of the pivotal energy between the two portions is reduced. In addition, a brake drum and pair of brake shoes are provided to adjust resistance to the pivotal movements between the portions, therefor adjustment of the resistance can be achieved without electrical power.

Abstract: A noiseless weight training machine is provided. The machine comprises a base frame mounted on a floor, a rectangular weight frame installed on the base frame, a pair of parallel guiding rods extending vertically from the base frame, a plurality of weight blocks for traveling up and down along the guide rods, a weight block connecting unit for connecting weight blocks of a number of interest to a user, a cable for suspending the weight block connecting unit through a sheave supported by the ceiling of the weight frame, and a shock damper placed beneath the weight blocks. The shock damper damps shock and vibrations generated by the impact of lifted weight blocks returning against the remainder thereof to reduce impact noise while exercising. The machine further includes elastic members disposed on stoppers mounted beneath the lowermost of the weight blocks so as to support them.

Abstract: A fixture for supporting a pole in a gymnasium floor comprises a frame on which a pair of hinged lid members are supported. The hinged lid members are each formed with a flat rectangular piece and a piece comprising a semicircular recess and are slidable along tracks so that while the upper surface of the semicircular recessed pieces are flush with the floor the rectangular pieces hang vertically beneath the floor and while the rectangular pieces are flush with the floor the semicircular recessed pieces hang vertically beneath the floor. The semicircular pieces cooperate to define an opening through which the pole can be received and the rectangular pieces cooperative to cover the opening. With this arrangement, no part of the fitting protrudes from the floor so as to pose a hazard.

Abstract: A heart pulse rate measuring system comprises a casing, a pair of rod-shaped grip sensors extending outwardly from the opposite sides of the casing for sensing a heart pulse signal, and an electric circuit for calculating a heart pulse rate from the sensed heart pulse signal. Each of the grip sensors is composed of two conductive cylindrical electrodes arranged in an axially aligned relationship and electrically insulated from each other for obtaining a pulse rate utilizing the potentials at four points in a user's body. The electric circuit includes a differential amplifier, having a ground connection to one of the two electrodes of each sensor and two inputs for the remaining electrodes. A filter is used to eliminate noise from the output of the differential amplifier, and a computer calculates the heart rate from the output of the filter.

Abstract: An adjusting device for adjusting the height of a net pole and the tension of a net rope so as to set up a net used, for example, for a volley ball game, comprises an outer tube, an inner tube telescopically inserted in the outer tube, a stretching means for stretching or releasing a net rope, and a drive means for actuating the inner tube to rise or fall along the outer tube and the stretching means. The drive means is completely housed in the outer tube and actuated by a detachable handle through an opening formed in the outer tube. The rope stretching means is provided at the top end of the inner tube and actuated by the drive means so as to stretch or release the net rope. The drive means is a counter-rotation preventing mechanism per se.

Abstract: A small portable-type apparatus for checking pulse or heart rate of a person engaged in exercise. Therefore, the apparatus according to the present invention can be used as a pulsimeter or a cardiometer according to the state of a person in motion. The apparatus is provided with a heart sensor having a plurality of cone-shaped conductive rubber electrodes to differentially detect an electrocardiowave voltage signal generated from three different places near the heart and a pulse sensor having a matching infrared-ray emitting diode and infrared-ray receiving phototransistor to detect the light reflected from the blood flowing through capillary vessels under the finger pad. The apparatus additionally functions as a stopwatch or a timer as selected by a mode-selector switch.

Abstract: A hoisting apparatus and a control circuit therefor comprising a reversible electric motor drivingly connected to a hoisting drum for hauling an object up and down. The control circuit includes first and second photosensitive elements each responsive to a light beam for initiating rotation of the electric motor in either direction and means for terminating rotation of the electric motor.

Abstract: A net post suitable for use in ball games is comprised of a hollow cylindrical support, a cylindrical slider disposed telescopically in the support so that it can move upwards and downwards, a handle axle disposed rotatably in the support, and a handle removably connected to the end of the handle axle. A transmission mechanism is provided for transmitting a rotational force in accordance with the rotation of the handle axle to a control rod which is positioned perpendicularly to the handle axle to drive the slider upwards or downwards. A guide wheel is rotatably mounted at the top end of the slider, and a hook, which is provided on the support, serves for fixing the end of a rope on which a net is hung with the rope tightened over the guide wheel.

Abstract: An arrangement for fastening an upstanding post in a floorboard for use in indoor sports comprises a hollow cylindrical support into which the post loosely fits, having an opening provided in the circumferential wall thereof, the cylindrical support being embedded below the floorboard, a guide box which covers the opening in the cylindrical support, a headed screw rod rotatably supported in a vertical fashion in the guide box, a first wedge member screw-threadedly receiving the screw rod so that it may move upwards or downwards, a second wedge member received in the opening of the guide box so that it may move in the radial direction of the cylindrical support in accordance with the movement of the first wedge, a hole provided through the floorboard aligned in a vertical plane with the screw rod.