Watch
US4271498A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1978 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Nov 7, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C21/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A resilient member for connecting a crystal to a watch casing in which the crystal is used for generating acoustic signals. The member is of generally annular configuration with an inner portion rigidly connected to the circumference of the crystal, an outer peripheral portion connected to a supporting member of the watch casing, and a free portion extending between the inner portion and the outer peripheral portion. The free portion has a width and a thickness which permits flexing in a direction normal to the plane of the crystal so that the crystal can vibrate in a direction normal to its plane and act as an acoustical transmitting member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.