Key switch improved in feel of actuation and return speed during operation by finger
US6455795B1 · kind B1 · utility
12Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2221/028
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a key switch in which a stem extending from a key top is slidably inserted into a seat formed on a housing; and longitudinal grooves extending in the direction of the axis X of reciprocating movement of the stem are formed in the circumferential surface of the stem which is in contact with the inner surface of the seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.