Method for assembling a watch case
US4993007A · kind A · utility
15Cited by
8References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 1989 |
| Grant date | Feb 12, 1991 |
| Priority date | — |
| Expiry date | Jun 22, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49584
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The watch case of this invention includes a caseband-back of plastic material, a metallic bezel and a packing to assure impermeability between the caseband-back and the bezel. A first annular seat extending radially into the bezel receives an annular protuberance integrally formed with the caseband in a manner such that the caseband-back and bezel become inseparable. At the same time a packing is compressed into a second seat to render impermeable the discontinuity between the caseband-back and the bezel. Assembly of the caseband-back to the bezel is effected by ultrasonic vibrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.