Title:
装飾要素、特に時計の一部を形成する要素
Document Type and Number:
Japanese Patent JP4476371
Kind Code:
B2
Abstract:
The wrist watch comprises four main pieces: an internal frame (2), an outer frame (4), a glass (6) and a base (8). The internal frame is made of a machined metal such as stainless steel and contains the mechanism. A part of the outer frame (4) is coated with a diamond layer having a micro-crystalline structure and 'cauliflower' type surface. This coating may be applied to specific surfaces of the frame (32,24,26). The coating offers a surface hardness of more than 800 HV, and is applied to a substrate of hard sintered metal or ceramic. If the material is too soft, then a shock to the outer casing can cause a fracture, since the outer thin coating does not have the elasticity which a soft substrate offers. If a metal substrate is used, then hard stainless steel may be used, sintered with tungsten carbide or titanium carbide, the carbides being attached with the aid of softer metals such as nickel, chromium, cobalt, molybdenum or a mixture of these.
Inventors:
Michael Bach
Application Number:
JP32085797A
Publication Date:
June 09, 2010
Filing Date:
November 21, 1997
Export Citation:
Assignee:
Monterey Rado Sear
International Classes:
G04B37/18; A44C5/00; G04B37/22
Domestic Patent References:
| JP6280019A | ||||
| JP62202899A | ||||
| JP7215795A | ||||
| JP3100176A | ||||
| JP6114607A | ||||
| JP62226889A | ||||
| JP4097974A | ||||
| JP57063675A | ||||
| JP9509005A |
Attorney, Agent or Firm:
Masaki Yamakawa
Hiroro Kurokawa
Osamu Nishiyama
Shigeki Yamakawa
Hiroro Kurokawa
Osamu Nishiyama
Shigeki Yamakawa