Patent · US Active

Motor group for watches

US10545460B2 · kind B2 · utility

1Cited by

3References

12Claims

0Family size

Assignee

ETA SA MANUFACTURE HORLOGÈRE SUISSE · CH

Inventors

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

Key dates

Filing date	Mar 24, 2017
Grant date	Jan 28, 2020
Priority date	—
Expiry date	May 10, 2037

Classification

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

Abstract

A motor group including motor modules, each including a motor device driving a display wheel set, with a centre pipe fixed on a plate, including a device for rotational guiding, about a main axis, of a display wheel set internal or external to the centre pipe, this module includes an axial stop arranged to limit to a predetermined value the axial play in the direction of the main axis between the centre pipe and the display wheel set, wherein a protruding surface of the centre pipe or of the display wheel set, or an added axial stop, captively mounted between the centre pipe and the display wheel set, or fixed to the display wheel set.

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