Momentary-maintained lever operated pushbutton

Details Momentary-maintained lever operated pushbutton Momentary-maintained lever operated pushbutton

1983-05-23

1984-04-24

Shepperd, John W.

Electricity: circuit makers and breakers

Suspended-wire controlled

200 50C, H01H 1518

Patent

active

044450133

ABSTRACT:
An improved momentary-maintained operating assembly for an electrical switch, including normally-closed maintained contacts and normally-open momentary contacts; lever operated overcenter, toggle mechanism including a stationary support pivotally supporting an operating cambeam member; a maintained and a momentary pushplate pivotally attached to rock the cambeam member on its pivot; spring members attached to cam follower rollers operating on convex cam surfaces of the cambeam member, with the spring members biasing the rollers towards the respective cam surfaces; the opposite ends of the pushplates being pivotally fastened to a yoke plate fastened to and rocked in alternative directions by the lever to operate the respective pushplates in maintained or momentary contact relationship; and separate spring means biasing the momentary pushplate away from contact operation.

REFERENCES:
patent: 1098849 (1914-06-01), Smart et al.
patent: 1186586 (1916-06-01), Klein
patent: 2050076 (1936-08-01), Wilms
patent: 2496282 (1950-02-01), Frese
patent: 2595414 (1952-05-01), Schaefer
patent: 3320395 (1967-05-01), De Smidt
patent: 3331931 (1967-07-01), Carter
patent: 3388228 (1968-06-01), Nagy
patent: 3402620 (1968-09-01), Mukai et al.
patent: 3514554 (1970-05-01), Boysen
patent: 4177363 (1979-12-01), Keranen
Allen-Bradley Co. Drawings: 40265-002 _-003 _-004 _-005 _-022 _-051 _

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