Watch having a first barrel complete with a diameter that is less than a diameter of a second barrel complete
AssigneeSeiko Epson Corporation
InventorShigeyuki Hayashi
Life of this patent
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Abstract
A watch includes a first barrel complete including a first barrel arbor, a first mainspring, and a first barrel, and a second barrel complete that includes a second barrel arbor, a second mainspring, and a second barrel, is disposed side by side in a planar direction orthogonal to a shaft direction of the first barrel arbor, and receives transmission of rotation of the first barrel complete. A tooth tip circle diameter of the first barrel complete is smaller than a tooth tip circle diameter of the second barrel complete, and a thickness of the first barrel is greater than a thickness of the second barrel.
Claims6
A watch comprising:
- a first barrel complete including a first barrel arbor, a first mainspring, and a first barrel;
- and
- a second barrel complete that includes a second barrel arbor, a second mainspring, and a second barrel, and is disposed side by side in a planar direction orthogonal to a shaft direction of the first barrel arbor so that rotation of the first barrel complete is transmitted to the second barrel,
- wherein a tooth tip circle diameter of the second barrel complete is 1.5 to 2.0 times greater than a tooth tip circle diameter of the first barrel complete, and
- a thickness of the first barrel is greater than a thickness of the second barrel.
Dependencies are inferred from the claim text.