Timepiece movement and timepiece

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11415940
APP PUB NO 20200264561A1
SERIAL NO

16782310

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A timepiece movement includes a control unit that determines a position of an indicating hand by detecting a rotation state of a rotor, and a train wheel that transmits a drive force of a stepping motor to the indicating hand, and that has a first gear, and a second gear and a third gear which mesh with the first gear. The first gear has a reference load unit that causes fluctuations in a load applied to the rotor in each case of meshing with the second gear and the third gear. A first line segment which connects a center of the first gear and a center of the second gear to each other forms an angle smaller than 180° with a second line segment which connects the center of the first gear and a center of the third gear.

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First Claim

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Patent Owner(s)

  • SEIKO INSTRUMENTS INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ihashi, Tomohiro Chiba, JP 51 122
Mugishima, Katsuya Chiba, JP 11 3

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