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:
Feb. 01, 2022
Filed:
Dec. 20, 2018
Seiko Instruments Inc., Chiba, JP;
SEIKO INSTRUMENTS INC., Chiba, JP;
Abstract
A timepiece movement includes a motor that has a rotor for rotating an indicating hand, a control unit that rotates the rotor by using a main drive pulse and an auxiliary drive pulse, and that determines a reference position of the indicating hand by detecting a rotation state of the rotor when the indicating hand is rotated using a detection drive pulse based on the main drive pulse, a train wheel that transmits a drive force of the motor to the indicating hand, and that has an indicating hand gear and a second intermediate pinion which mesh with each other, and an elastic portion that is disposed in the indicating hand gear, and that is elastically deformed by coming into contact with the second intermediate pinion when the indicating hand is located at the reference position.