Method of producing an oscillating weight for automatic timepieces
US4057885A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 1976 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | May 13, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49938
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of producing an oscillating weight for an automatic wristwatch. The oscillating weightcomprises a heavy-metal segment and a metallic center portion having a flanged rim. For attaching the center portion to the heavy-metal segment, an arcuate groove is formed in the upper surface of the segment, the flanged rim of the center portion is axially inserted in the groove which is slightly wider than the flanged rim, and at one or more locations a portion of the segment is wedged over the rim or a portion of the rim is wedged in the groove by exerting a localized pressure substantially at right angles to the plane of the center portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.