Rotary, push-pull headlight switch with ceramic coated metal substrate rheostat and cam actuated dome light bypass switch
US5264821A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 1991 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | May 15, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H25/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.