Waterproof control knob assembly with integral switch
US4439654A · kind A · utility
18Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H19/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotatable control with an integral switch comprises conductive inner and outer shaft in a concentric configuration. The inner and outer shaft are electrically insulated from one another and frictionally coupled to allow concentric simultaneous rotation. The assembly is covered with a flexible insulating shroud which has a switch contact located on the upper interior surface thereof. Conductive spring members are clipped around the lower portion of the inner and outer shaft to allow electrical connection to a circuit board.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.