The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 21, 1978
Filed:
Apr. 06, 1976
Applicant:
Inventors:
Munetaka Tamaru, Tokyo, JA;
Kazunari Kume, Tokorozawa, JA;
Minoru Watanabe, Tokorozawa, JA;
Hideshi Ohno, Sayama, JA;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B / ; G04B / ; G04C / ;
U.S. Cl.
CPC ...
58 2 / ; 58 855 ; 5812 / ; 58138 ;
Abstract
An electronic timepiece comprising a means for generating a base signal, an electromechanical transducer to convert the base signal into mechanical motion of a rotatable shaft, only a back side chain of wheels and a driving means whereby the back side chain of wheels is directly driven by the rotatable shaft. Furthermore, the driving means is coupled to the rotatable shaft such that idling rotation of the driving means occurs without rotation of the rotatable shaft when the timepiece is being set externally.