Patent · US Active

Shockproof centre wheel

US9244432B2 · kind B2 · utility

3Cited by

6References

27Claims

0Family size

Assignee

ETA SA MANUFACTURE HORLOGÈRE SUISSE · CH

Inventors

Pascal Lagorgette · Bienne, CH
Raphael Balmer · Courchapoix, CH

Key dates

Filing date	Feb 7, 2014
Grant date	Jan 26, 2016
Priority date	—
Expiry date	Feb 7, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG04B35/00
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Shockproof timepiece wheel for driving a component having unbalance relative to a pivot axis of this wheel, The wheel includes, on the one hand, an arbour for pivotally guiding the wheel about this pivot axis, and on the other hand, a drive device arranged or assembled on a flange of this wheel, the wheel including at least one flexible element between this arbour and the flange. The flange includes a cylindrical shoulder, which cooperates in abutment for centring purposes with a complementary cylindrical shoulder provided in the arbour to ensure the perfect concentricity of the drive device with the arbour.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.