Watch cannon-pinion
US9195217B2 · kind B2 · utility
0Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2014 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Nov 25, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49581
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Watch cannon-pinion including a first bore for receiving a pivot-shank including, on either side of a recess, a first shoulder and a second shoulder.This cannon-pinion is made in two parts and includes, on the one hand, a body comprising internally the first bore and externally a support shoulder, and on the other hand, a shape memory alloy ring including a second bore, and, in the free state, the second bore has a larger diameter than that of the support shoulder when the ring is in a martensitic structure, and a smaller diameter than that of the support shoulder when the ring is in an austenitic structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.