Rotary selector switch
US4495387A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1982 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Sep 30, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H19/62
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multicircuit rotary selector switch having no external terminals is disclosed. A two-part interlocking housing journals a user-rotatable shaft carrying a stack of coaxially oriented, multilobed cam discs, each disc defining a tier level within the housing. Engageable with each disc and lying in its tier level is a pair of elongated movable switching elements each having a wire gripping end portion, a moving contact end portion, and an intermediate cam follower portion riding the lobes of its associated cam disc, each movable switching element being configured as a third class lever. One or more fixed switching elements, each including a contact portion and a wire gripping portion, are located adjacent the contact end portions of each of the moving switching elements. Portions of the fixed and movable switching elements are sandwiched between the two parts of the housing to maintain them in proper position relative to each other and to the cam disc stack.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.