Patent · US Expired

Timepiece with switch operable by pressing the timepiece glass

US5742564A · kind A · utility

17Cited by

6References

9Claims

0Family size

Assignee

Junghans Uhren GmbH · DE

Inventors

Pieter Kuschel · Schiltach, DE
Andreas Müller · Wadgassen, DE

Key dates

Filing date	Nov 25, 1996
Grant date	Apr 21, 1998
Priority date	—
Expiry date	Nov 25, 2016

Classification

Technology area (CPC G)Physics
CPC primaryG04G21/08
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A timepiece, such as a wristwatch, includes a casing, a carrier disc disposed in the casing, a glass mounted elastically to the casing in front of the carrier disc, and control switches in the form of piezoelectric sensors each sandwiched between an outer edge of the glass and a forwardly facing edge of the carrier disc. The sensors are electrically connected to an electrical control circuit of the timepiece and are actuable in response to being compressed by a rearward pressure applied to the outer edge of the glass.

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