Sequential switching device

Details Sequential switching device Sequential switching device

1979-02-12

1981-02-03

Rubinson, Gene Z.

Electricity: circuit makers and breakers

Multiple circuit control

Sequential operations

200 5R, 200 17R, 200292, H01H 900

Patent

active

042490561

ABSTRACT:
A mechanical switch having a plurality of sequentially energized outputs responsive to the displacement of a push button or other linear actuator comprises an arcuate array of fixed contacts on a rigid printed circuit board and a single movable contact comprising a helical spring member with its axis normal to the circuit board and having one end contacting one of the fixed contacts. The spring rate of the spring progressively varies along its length such that when the spring is compressed by an axially applied force the spring sequentially and progressively contacts and bridges the fixed contacts thereby sequentially engaging the fixed contacts.

REFERENCES:
patent: 3523450 (1970-08-01), Openshaw et al.

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