Fall-through return spring arrangement for a push-button switch

Details Fall-through return spring arrangement for a push-button switch Fall-through return spring arrangement for a push-button switch

1976-08-20

1978-09-05

Scott, James R.

Electricity: circuit makers and breakers

Electric switch details

Actuators

H01H 312

Patent

active

041122844

ABSTRACT:
A push-button switch has a wire spring to return the push-button to its non-operated position after operation. The spring is carried by the stem on which the button is mounted and a portion of the spring bears against a fixed ramp. The ramp has first and second portions, the second portion being inclined at a smaller angle to the direction of motion of the push-button than the first portion, against which the spring bears in succession during operation of the push-button such that the force necessary to move the push-button decreases as the push-button is depressed so as to effect a "fall-through" action.

REFERENCES:
patent: 3433914 (1969-03-01), Ericsson
patent: 3715545 (1973-02-01), Long
patent: 3895203 (1975-07-01), Leworthy
patent: 3920943 (1975-11-01), Lapointe
patent: 3993884 (1976-11-01), Kondur et al.

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