# US 2001/0026501 A1 · Clutch wheel for a timepiece

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- Number: US 2001/0026501 A1
- Document ID: US20010026501A1
- Status: Published application
- Kind: A1
- Application number: 09/814,518
- Filed: 2001-03-22
- Published: 2001-10-04
- Earliest claimed: 2000-03-31
- Assignees: Seiko Instruments Inc.
- Inventors: Akihiro Matoge
- Web page: https://patentgrep.com/patent/US20010026501A1

## CPC

- G04B 11/003: {with friction member, e.g. with spring action}
- G04D 3/002: {for gear wheels or gears}
- G04B: MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS (spring- or weight-driven mechanisms in general F03G; electromechanical clocks or watches G04C; electromechanical clocks with attached or built-in means operating any device at pre-selected times or after predetermined time intervals G04C23/00; clocks or watches with stop devices G04F7/08)
- G04D: APPARATUS OR TOOLS SPECIALLY DESIGNED FOR MAKING OR MAINTAINING CLOCKS OR WATCHES

## Abstract

A clutch wheel for a timepiece is formed by a metal. This comprises a cylindrical portion in which a hand setting stem penetrates slidably and relatively non-rotatable, a flange portion integrally formed with a base end of this cylindrical portion, and a plurality of teeth integrally formed on a side surface of this flange portion and radially formed in a manner surrounding the cylindrical portion from an outer peripheral surface of the cylindrical portion.

## Claims

### Claim 1

A clutch wheel for a timepiece comprising:
a cylindrical portion in which a hand setting stem penetrates slidably and relatively non-rotatable;
a flange portion integrally formed with a base end of the cylindrical portion; and
a plurality of teeth integrally formed on a side surface of the flange portion and radially formed in a manner surrounding the cylindrical portion from an outer peripheral surface of the cylindrical portion;
wherein the clutch wheel is formed by a metal.

### Claim 2

A clutch wheel for a timepiece comprising:
a cylindrical portion in which a hand setting stem penetrates slidably and relatively non-rotatable;
a flange portion integrally formed with a base end of the cylindrical portion;
a plurality of individual teeth integrally formed on a side surface of the flange portion and radially formed in a manner surrounding the cylindrical portion spaced from an outer peripheral surface of the cylindrical portion;
wherein the clutch wheel is formed by a metal.

### Claim 3 (depends on 2)

A clutch wheel as claimed in claim 2, wherein the individual tooth is in a cylindrical shape.