Abstract: The present invention relates to a switch type variable resistor, including a rotation shaft, a bushing, a housing, a variable resistor portion, and a switch portion. The switch portion includes a switch portion seat, a control plate, an insulating plate, a pair of electrode terminals, an elastic connecting member, an annular connecting member, a rotary member, and a rivet. The variable resistor portion includes a pair of terminal seats each having variable resistor carbon film plates and terminals, a pair of contact plates, and a contact plate seat. The contact plates and the control plate are rotated by the rotation shaft, thereby forming the complete switch type variable resistor.

Abstract: The potentiometer has a housing in which a carrier plate which supports a resistance strip is disposed. A rotary pin is supported on the housing and has a sliding contact connected to the rotary pin for engaging the resistance strip. The carrier plate is rotatably connected to the housing and is embodied for the engagement of a turning tool. It assumes its position with regard to the housing because of a frictional connection. The resistance strip can be oriented with regard to the housing or the sliding contact by rotating the carrier plate relative to the housing and the rotary pin.

Abstract: A potentiometric position transducer comprises a resistive track movably mounted within a housing. A portion of the resistive track is between two fixed electrical contact points. A third electrical contact is moveable over such portion, corresponding to the position or setting of an exterior device, such as the throttle of an internal combustion engine. Drive means are provided to move the resistive track, to repeatedly substitute new portions of the resistive track between the two fixed contact points. Wear is spread over the entire resistive track.

Abstract: To permit external adjustment of a potentiometer (3) having an adjustment head (4), and located within a sealed housing (1), while permitting placement of an adjustment insert (7) from the outside of the housing through a bore (6) thereof, and compensate for manufacturing and positioning tolerances, the insert element is a unitary structure of a tough plastic, such as polyamide (nylon), sealingly inserted through the opening and retained in the opening by snap-over hooks (13) engaging over the inner wall (25) of the housing, and retaining a screw head (8) of the insert element therein. Longitudinal and transverse deviation from alignment of the axis of the opening (6) and the rotation axis of the adjustment element (4) of the potentiometer is obtained by resiliently deflectable cross-joints (14, 14'; 17, 18) formed in an intermediate portion of the insert element, which cross-joints are connected by a S-shaped resiliently deflectable connecting portion.

Abstract: A sliding rheostat includes two slider supports mounted to a support member between a pair of resistance base plates and in the direction that the slider supports move. Screws are mounted between the corresponding sliders and the support member to adjust the positions of the sliders relative to the support member, thus permitting the points at which the sliders are in contact with their respective resistance base plates to be placed in a line.

Abstract: In an electronic thermostatic circuit, a resistive bridge network is employed to sense the level of the ambient temperature. The bridge includes three legs having fixed resistors and one leg having a temperature sensitive resistor as well as a serially connected adjustable potentiometer. The adjustable potentiometer is adjustable to provide a selected set point for the operation of the thermostat within a given range of temperatures. The adjustable potentiometer is provided with a shaft to which an adjusting knob having a pointer thereon is secured by means of a slip fastener. Calibration of the assembly is accomplished by turning the knob with its pointer pointed in a preferred direction then holding the knob while adjusting the shaft and the associated potentiometer until the bridge output corresponds with the value indicated by knob pointer.

Abstract: A first rotor is fixedly carried by a shaft and a second rotor is loosely carried by the shaft. A coupling means couples the second rotor to the shaft through flanges extending from the rotor and pinching the shaft. The two rotors are then adjusted with respect to one another by rotating the shaft while holding the second rotor in place.

Abstract: A radio control system having a radio-controlled model toy on which a d-c power supply, a receiver and two electric motors are mounted, and a transmitter for maneuvering the radio-controlled model toy, and characterized in that the transmitter is constructed so that a control pulse signal having a pulse level representing signal "1" and a pulse level representing signal "0" is transmitted and the duration of the signal "1" pulses is increased or decreased, and that the receiver is constructed so that driving current is supplied to a motor during the signal "1" pulse duration and to another motor during the signal "0" pulse duration.

Abstract: A potentiometer contained within a housing is operated from the outside by means of an operating member which extends inward through an orifice in a housing wall. The operating member engages the potentiometer drive stem with the aid of an O-ring slip clutch, and includes a flange which is spring-urged against the interior housing wall to inhibit internal explosions from propagating to the outside.