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:
Aug. 14, 2007
Filed:
Jan. 13, 2006
Haruki Hiranuma, Chiba, JP;
Nobukazu Omori, Chiba, JP;
Haruki Hiranuma, Chiba, JP;
Nobukazu Omori, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
To provide a portable timepiece having high durability constructed by a constitution capable of promoting operability of attaching and detaching a crown and holding a crown in an unoperated state so as not to rotate the crown unpreparedly. In a winding stem pipe attached to a case body, a crown urged in a direction of separating from the case body by a coil spring (urging member) included in a crown cylinder portion of the pipe is removably provided to a case body outside projected portion of the winding stem pipe. An outer periphery of the case body outside projected portion is formed with a plurality of communicating grooves along a rotational direction of the crown, a plurality of attaching and detaching through grooves communicated to the communicating grooves and opened to an end face of the case body outside projected portion, and a plurality of holding grooves communicated with the communicating grooves and formed in a dead end state and contiguous to the through grooves. A plurality of engaging projected portion brought to and from the respective grooves are provided at a cover portion of the crown covering the case body outside projected portion.