Continuous waterproof timepiece case with integral case back blank
US5333123A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1993 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Jul 23, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04C10/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A water-resistant timepiece of the type including a crystal, a timepiece dial and movement assembly, and a long-life energy cell, which comprises a continuous case of plastic having: a first outer peripheral member adapted to receive said dial and movement assembly and the long-life energy cell, and further adapted to receive the crystal to form a water-resistant seal therewith; a thin substantially flat case back wall integral with the peripheral member to form an annular edge; and a peripheral groove located in the bottom of the peripheral member. A case back blank of substantially uniform thickness, having a substantially flat central portion and an integral peripheral side wall, and preferably made of stainless steel, cooperates with the peripheral groove of the case to integrally attach the case back blank to the case to complete a thin timepiece having improved water resistance, high mechanical and structural integrity, and an aesthetic appearance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.