Timepiece

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United States of America Patent

PATENT NO 11550261
APP PUB NO 20200257246A1
SERIAL NO

16787116

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A timepiece having multiple springs while reducing the plane size of the movement. The timepiece has a first barrel including a first barrel arbor, a first spring, and a first barrel wheel; and a second barrel including a second barrel arbor, a second spring, and a second barrel wheel, disposed to a position not superimposed with the first barrel in a plan view from the axial direction of the first barrel arbor and the second barrel arbor, and having rotation of the first barrel transferred thereto; a planetary gear mechanism having a display pivot that turns in a first direction when rotation of the first ratchet wheel that turns in unison with the first barrel arbor is transferred, and turns in a second direction opposite the first direction when rotation of the second barrel wheel is transferred, and is disposed to a position not superimposed with the first barrel and the second barrel in plan view; and a power reserve wheel train including multiple wheels that transfer rotation of the first ratchet wheel to the planetary gear mechanism, and having one of the multiple wheels axially supported by the second barrel arbor.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
SEIKO EPSON CORPORATIONTOKYO

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hiraya, Eiichi Shiojiri, JP 11 46

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