Rotary noiseless detent switch
US4628199A · kind A · utility
5Cited by
12References
9Claims
0Family size
Inventors
Key dates
| Filing date | Oct 13, 1983 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Oct 13, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2003/506
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A noiseless rotary detent switch, wherein a ferromagnetic projection passes in close proximity to a magnetic pole, in combination with a first photoelectric detector for detecting the leading and trailing edges of said projection and a second photoelectric detector for detecting the presence or absence of said projection, the magnetic attraction between said projection and said pole providing the noiseless detent action and said first and said second photoelectric detectors providing electric signals for actuating switches in a sequence corresponding to that of the direction of rotation of said rotary switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.