Switch key assembly having improved switch actuation

Details Switch key assembly having improved switch actuation Switch key assembly having improved switch actuation

1983-02-22

1984-05-08

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200153LA, 200159B, 200340, H01H 1370, H01H 300

Patent

active

044476817

ABSTRACT:
Switch key comprises a frame having a frame column and a plunger guided by the column. A return spring biases the plunger to its extended position. When the plunger is depressed, a switch actuator is moved against switch contacts adjacent to the frame to close the switch. The switch actuator comprises a bell crank pivoted to the frame and having a contact arm which closes the switch and a cam arm. The cam arm is cammed by the plunger to close the switch when the plunger is depressed.

REFERENCES:
patent: 1424402 (1922-08-01), Hartman
patent: 1762789 (1930-06-01), Nordholm
patent: 2845498 (1958-07-01), Gaynor
patent: 3909564 (1975-09-01), Scheingold et al.
patent: 3982081 (1976-09-01), Demler, Jr.
patent: 4417115 (1983-11-01), Desmarais et al.

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