Rotary, push-pull headlight switch with ceramic coated metal sub

Details Rotary, push-pull headlight switch with ceramic coated metal sub Rotary, push-pull headlight switch with ceramic coated metal sub

1991-05-15

1993-11-23

Lateef, Marvin M.

Electrical resistors

Mechanically variable

Movable contact electrically adjustable over length of...

338173, 338198, 338200, 200 4, 200 6BB, H01C 1036

Patent

active

052648214

ABSTRACT:
A rotary, push-pull switch (20) for use in an automobile has a rotating ceramic coated metal substrate rheostat (48) and a supplemental switch (52) which opens and closes a dome light bypass circuit. The supplemental switch (52) is mounted internally to the rotary, push-pull switch (20) adjacent to the rotating rheostat (48) disposed on a shaft (36). A projection (88), which is radially disposed on the shaft (36), is used to actuate the supplemental switch (52) by engaging a resilient contact leaf (60) when the shaft (36) is rotated sufficiently. The engagement of the projection (88) and contact arm (60) causes the separation of a contact (62) and terminal (64), opens the dome light bypass circuit, and precludes energizing the dome light.

REFERENCES:
patent: 3602868 (1971-08-01), Lybrook
patent: 3838071 (1974-09-01), Amin
patent: 4164633 (1979-08-01), Sheridan et al.
patent: 4682142 (1987-07-01), Lohner et al.
patent: 4698552 (1987-10-01), Minami et al.
patent: 4827241 (1989-05-01), Riser et al.
patent: 4885434 (1989-12-01), Vultaggio et al.
Schabacker "The Porcelain Enameled Metal Substrate and its Application for Electronic Circuitry," FERRO-ECA Electronics Company Technical Report, pp. 4-6 (publication date unknown) Author Robert B. Schabacker.

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