Patent · US Active

Mechanical timepiece oscillator which is isochronous in all positions

US10838364B2 · kind B2 · utility

0Cited by

2References

29Claims

0Family size

Assignee

ETA SA MANUFACTURE HORLOGÈRE SUISSE · CH

Inventors

Pascal Winkler · Neuchâtel, CH
Laurent Klinger · Bienne, CH
Jean-Luc Helfer · Le Landeron, CH

Key dates

Filing date	Apr 17, 2019
Grant date	Nov 17, 2020
Priority date	—
Expiry date	Apr 17, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG04C3/102
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A mechanical oscillator with an inertia element oscillating about a virtual pivot axis of fixed position with respect to a fixed base to which it is suspended by several flexible connections, each including a deformable compass-like member including elastic strips forming a first arm fixed to a base and a second arm fixed to the inertia element, joined at a reversal edge defining a apex of the deformable compass-like member, wherein in an unstressed rest state of the oscillator, the projection of the apex is on a first side of the pivot axis, opposite to a second side where the ends of the first and second arms are projected.

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