Title:
WRISTWATCH CASE AND METHOS OF FIXING PIPE OF WRIST WATCH CASE
Document Type and Number:
WIPO Patent Application WO/2002/023283
Kind Code:
A1
Abstract:
One wristwatch case, characterized in that a pipe is fixedly connected thereto and a connection interface between the wristwatch case and the pipe is not present substantially; the method of fixing the wristwatch, comprising the steps of providing a through-hole in the wristwatch case, press-fitting the pipe of 0 mm. or larger in press-fitting tolerance (pipe outer diameter - through-hole diameter) between the through-hole and the pipe, and heating the wristwatch case after the press-fitting step; the other wrist-watch case, characterized in that a pipe is fixedly connected thereto through a diffusion layer; the method of fixing the pipe of the wristwatch case, comprising the steps of forming a through-hole in the wristwatch case, press-fitting the pipe of 0 mm. or larger in press-fitting tolerance (outer diameter of pipe having a metal film formed on the surface thereof - diameter of through-hole) between the through-hole and the pipe having a metal film formed on the surface thereof, and heating the wristwatch case in vacuum or reducing gas atmosphere after the press-fitting step.
Inventors:
UCHIDA HITOSHI (JP)
FUJII KOUJI (JP)
SATOH JUNJI (JP)
FUJII KOUJI (JP)
SATOH JUNJI (JP)
Application Number:
PCT/JP2001/005648
Publication Date:
March 21, 2002
Filing Date:
June 29, 2001
Export Citation:
Assignee:
CITIZEN WATCH CO LTD (JP)
UCHIDA HITOSHI (JP)
FUJII KOUJI (JP)
SATOH JUNJI (JP)
UCHIDA HITOSHI (JP)
FUJII KOUJI (JP)
SATOH JUNJI (JP)
International Classes:
B23K20/00; B23K20/14; B23K20/16; G04B37/06; G04B37/08; G04B37/22; G04D3/00; (IPC1-7): G04B37/06; G04B37/22; B23K20/00
Foreign References:
| JPS61180685A | 1986-08-13 | |||
| JPS62199277A | 1987-09-02 | |||
| JPS5728690A | 1982-02-16 | |||
| JPS55161293U | 1980-11-19 | |||
| JPS58128281A | 1983-07-30 | |||
| JPS60223682A | 1985-11-08 | |||
| JPH05220849A | 1993-08-31 | |||
| JPS52110063A | 1977-09-14 | |||
| JPS61180685A | 1986-08-13 |
Other References:
See also references of EP 1241539A4
Attorney, Agent or Firm:
Suzuki, Shunichiro (Nishigotanda 7-chome Shinagawa-ku, Tokyo, JP)
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