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. 13, 2004
Filed:
Jan. 30, 2003
Takashi Takahashi, Chiba, JP;
Seiko Instruments Inc., Chiba, JP;
Abstract
To provide a power accumulation structure of a simple construction, in which a planetary mechanism is not used, for a timepiece using a spring as power. A power accumulation structure of a simple construction not using a planetary mechanism is a power accumulation structure using a threaded mechanism. This power accumulation structure using the threaded mechanism includes a ratchet wheel , a barrel complete, an externally threaded wheel supported on a plate and a wheel train receiving member and disposed so as to be meshed with the ratchet wheel, an internally threaded wheel having an internally threaded portion meshed with the externally threaded portion of the externally threaded wheel, a gear portion and a conical portion and disposed so as to be meshed with a gear of the barrel complete, a power accumulation wheel having a cumulative power pointer fixed thereto and an arm engaged with the conical portion of the internally threaded wheel, and a spring member adapted to urge the arm of the power accumulation wheel against the conical portion of the internally threaded wheel.