Pointer and timepiece

Patent metadata

Field	Value
Publication number	US-9817370-B2
Application number	US-201615014878-A
Country	US
Kind code	B2
Filing date	Feb 3, 2016
Priority date	Mar 17, 2015
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

A pointer including a pointer body formed using a carbon fiber textile sheet having a carbon fiber woven thereinto.

First claim

What is claimed is:

1. A pointer comprising:
a pointer body having a plurality of carbon fiber textile sheets laminated therein, each of the carbon fiber textile sheets having a carbon fiber woven thereinto,
wherein at least one of the carbon fiber textile sheets has a twill weave, and at least one of the carbon fiber textile sheets has a plain weave,
wherein the carbon fiber textile sheets are arranged such that the twill weave and the plain weave are alternatively arranged in the lamination direction and have a symmetric arrangement in the laminating direction, and
wherein, within each of the carbon fiber sheets, an interval between texture crossing points, at which carbon fiber warps and carbon fiber wefts cross each other, is smaller than a length of a smaller one of (i) a length of a narrowest portion of a plane of the pointer body and (ii) an inner diameter of a mount hole provided in the pointer body.

2. The pointer according to claim 1 , wherein the plurality of carbon fiber textile sheets are laminated in three layers where a fiber arrangement state of a first layer carbon fiber textile sheet and a fiber arrangement state of a second layer carbon fiber textile sheet are different from each other, and the fiber arrangement state of the first layer carbon fiber textile sheet and a fiber arrangement state of a third layer carbon fiber textile sheet are the same.

3. A timepiece comprising:
the pointer according to claim 2 .

4. A timepiece comprising:
the pointer according to claim 1 .

Assignees

• Casio Computer Co Ltd

Inventors

• Amano Masao

Classifications

• G04B19/12 Primary

  Selection of materials for dials or graduations {markings} · CPC title

• G04B19/042 Primary

  Construction and manufacture of the hands; arrangements for increasing reading accuracy (hands with illumination G04B19/305; specially shaped hands, e.g. figures or pictures G04B45/0061; clockwork in the hands G04B45/043; invisible drive of the hands G04B45/046) · CPC title

• G01D13/22

  Pointers, e.g. settable pointer · CPC title