Watch whose case includes a back cover or cover with a bayonet fitting for manual opening
US7149153B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2003 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Nov 23, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C10/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an electronic watch containing an electric battery assembly of large size, particularly a battery assembly including several batteries or accumulators (41, 42), the diameter of a removable cover (20) closing a large bottom opening of the back cover (14) of the watchcase is limited by the fact that the cover is provided with a bayonet fitting device having locking members (56) radially directed towards the interior. These locking members catch on a fixed support (22) having one or more housings for the battery assembly. They are arranged at the top of a substantially cylindrical annular portion (50) of the cover. A sealing gasket (52) is placed around this annular portion and compressed radially against a cylindrical surface (16) of the periphery of the opening in the back cover, which ensures water-resistance even if the bayonet fitting is not screwed all the way in. According to a variant, the cover can form the entire back cover of the case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.