Patent · US Expired

Timepiece and drive unit therefor

US4666313A · kind A · utility

7Cited by

4References

5Claims

0Family size

Assignee

Junghans Uhren GmbH · DE

Inventors

Wolfgang Ganter · Schramberg, DE
Oskar Flaig · Dunningen, DE
Heinrich Oertel · Tennenbronn, DE
Hans Kaiser
Ewald Kussmaul · Freudenstadt, DE
Hermann Brede · Schiltach, DE

Key dates

Filing date	Apr 1, 1986
Grant date	May 19, 1987
Priority date	—
Expiry date	Apr 1, 2006

Classification

Technology area (CPC G)Physics
CPC primaryG04C10/02
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A solar timepiece comprises a drive unit including a commercially available battery clock mechanism mounted to the back of a support plate for the solar cells. The clock mechanism includes hands arbors which pass through an opening in the support plate. The support plate is angularly adjustable about the axis of the hands arbors so that the longitudinal extent of the solar cells can be made to coincide with the decoratively adapted orientation of light passage areas in the dial face located directly in front of it.

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