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:
Jan. 08, 1980
Filed:
Jul. 24, 1978
Applicant:
Inventor:
Kazuo Teramoto, Fuchu, JP;
Assignee:
Citizen Watch Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04B / ;
U.S. Cl.
CPC ...
58 / ; 58 58 ;
Abstract
A calendar mechanism for timepieces comprising an annular date dial, an annular month dial provided outside the date dial, an auxiliary lever provided on the date dial having a pawl portion, an additional driving member adapted to be rotated one full turn every 24 hours, and cam means provided on the month dial, which biases the auxiliary lever toward the additional driving member to engage the pawl portion of the auxiliary lever with the driving member in the end of the even months, whereby the date dial may be driven two steps by operation of the usual driving means and the operation of the additional driving member in the end of the even month.