Manually-actuated contact switch arrangement for electronic watch
US4320485A · kind A · utility
Inventor
Key dates
| Filing date | Jan 18, 1980 |
| Grant date | Mar 16, 1982 |
| Priority date | — |
| Expiry date | Jan 18, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C3/005
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A manually-actuated contact switch arrangement for an electronic watch in which an electronic circuit board is mounted on a base plate fitted within a case, the board having a contact extending therefrom which when electrically connected to the case completes a circuit effecting a command or setting function. The arrangement includes a return spring anchored on the base plate. A section of the free end portion of this spring is received in a transverse groove in a push member displaceably seated within a bore in the case whereby the spring imposes an initial tension on the member to maintain it at a predetermined rest position. By depressing the spring-biased push member, the free end of the spring is caused to engage the contact to close the circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.