Variable resistor with a switch

Details Variable resistor with a switch Variable resistor with a switch

1987-12-31

1990-02-20

Walberg, Teresa J.

Electrical resistors

Mechanically variable

With switch actuated by resistor actuator

338178, 338200, H01C 1050

Patent

active

049030035

ABSTRACT:
A variable resistor with a switch which minimizes appearances of an arc and prevents incomplete contact between contacts of the switch originating from such an arc. The variable resistor with a switch includes a torsion coil spring having one end connected to a movable contact element supported for pivotal motion around a support shaft and the other end connected to a cam member also supported for pivotal motion around the support shaft. When the cam member is pivoted by movement of a slider receiver, a connecting point between the torsion coil spring and the cam member moves across a straight line interconnecting the support shaft and another connecting point between the torsion coil spring and the movable contact element so that a movable contact on the movable contact element is instantaneously brought into or out of contact with a fixed contact to turn the switch on or off irrespective of the speed of movement of the slider receiver.

REFERENCES:
patent: 3497857 (1970-02-01), Pfeufer
patent: 3633146 (1972-01-01), Neyagawa et al.
patent: 3858148 (1974-12-01), Hauenstine
patent: 4523176 (1985-06-01), Leibinger et al.
patent: 4660019 (1987-04-01), Bauer et al.

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