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:
Sep. 02, 2025
Filed:
Jul. 01, 2022
Ttimepiece having a driving wheel including a hole with projections disengageable with a crown shaft
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Yoshio Mishima, Matsumoto, JP;
Assignee:
SEIKO EPSON CORPORATION, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04B 27/04 (2006.01); G04B 13/02 (2006.01);
U.S. Cl.
CPC ...
G04B 27/045 (2013.01); G04B 13/021 (2013.01);
Abstract
A timepiece includes an inner rotating ring including a plurality of teeth portions; a driving crown including a head portion and a shaft portion; and a driving wheel including a hole portion engageable with and disengageable from the shaft portion, and configured to mesh with the teeth portions. The hole portion includes a plurality of protruding portions disposed at intervals of an angle smaller than 90° and protruding toward a rotation axis of the shaft portion.