EP 0844539 A1 19980527 - Decorative element particularly component of a timepiece
Title (en)
Decorative element particularly component of a timepiece
Title (de)
Zierelement insbesondere Bauteil einer Uhr
Title (fr)
Elément décoratif, notamment élément constitutif d'une pièce d'horlogerie
Publication
Application
Priority
EP 96118796 A 19961122
Abstract (en)
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.
Abstract (fr)
L'invention concerne un élément décoratif comprenant un substrat revêtu au moins partiellement d'une couche protectrice et décorative en matériau dur, caractérisé en ce que le matériau de ladite couche a une structure microcristalline et une surface extérieure présentant une topographie régulière du type chou-fleur. <IMAGE>
IPC 1-7
IPC 8 full level
G04B 37/18 (2006.01); G04B 37/22 (2006.01)
CPC (source: EP KR US)
G04B 37/22 (2013.01 - KR); G04B 37/223 (2013.01 - EP US)
Citation (applicant)
- EP 0199207 A1 19861029 - RADO MONTRES SA [CH]
- US 4734339 A 19880329 - SCHACHNER HERBERT [CH], et al
- CHIA-FU CHEN, TSAO-MING HONG: "The role of hydrogen in diamond synthesis from carbon dioxyde-hydrocarbon gases by micro wave plasma chemical vapor deposition", REVUE SURFACE AND COATINGS TECHNOLOGY, vol. 54/55, 1992, pages 368 - 373
Citation (search report)
- [YA] WO 8503364 A1 19850801 - SPILLMANN SA C R [CH]
- [A] DE 3706818 A1 19870910 - NIPPON MUSICAL INSTRUMENTS MFG [JP]
- [Y] CHIA-FU CHEN AND TSAO-MING HONG: "THE ROLE OF HYDROGEN IN DIAMOND SYNTHESIS FROM CARBON DIOXIDE-HYDROCARBON GASES BY MICROWAVE PLASMA CHEMICAL VAPOR DEPOSITION", SURFACE AND COATINGS TECHNOLOGY, vol. 54/55, 1992, SWITZERLAND, pages 368 - 373, XP000646098
- [A] GANGOPADHYAY A.K. AND TAMOR M.A.: "FRICTION AND WEAR BEHAVIOR OF DIAMOND FILMS AGAINST STEEL AND CERAMICS", WEAR, vol. 169, no. 2, 15 October 1993 (1993-10-15), SWITZERLAND, pages 221 - 229, XP000645949
- [A] SAITOH H., YOSHIDA K. AND YARBROUGH W.A.: "PREPARATION AND CHARACTERIZATION OF BORON RICH BORON NITRIDE MICROCRYSTALS BY HOT FILAMENT ASSISTED CHEMICAL VAPOR DEPOSITION", JOURNAL OF CHEMICAL VAPOR DEPOSITION, vol. 1, no. 1, July 1992 (1992-07-01), USA, pages 59 - 72, XP000646093
- [A] CH-A-2962/74 (JEAN SINGER ET CIE, S.A.)
- [A] COPPERTHWAITE R.G. AND WITCOMB M.J.: "ELECTRON MICROSCOPY AND ESCA STUDIES OF NIOBIUM FILMS SPUTTER DEPOSITED ON STAINLESS STEEL", ELECTRON MICROSCOPY SOCIETY OF SOUTHERN AFRICA,15TH ANNUAL CONFERENCE, vol. 6, December 1976 (1976-12-01), JOHANNESBURG, SOUTH AFRICA, pages 99 - 100, XP000646518
Designated contracting state (EPC)
CH DE FR GB IT LI LU SE
DOCDB simple family (publication)
EP 0844539 A1 19980527; EP 0844539 B1 20031119; CN 1161673 C 20040811; CN 1185599 A 19980624; DE 69630792 D1 20031224; DE 69630792 T2 20040923; HK 1013779 A1 19990910; JP 4476371 B2 20100609; JP H10160863 A 19980619; KR 100547850 B1 20060414; KR 19980041971 A 19980817; SG 67443 A1 19990921; TW 346557 B 19981201; US 6123450 A 20000926
DOCDB simple family (application)
EP 96118796 A 19961122; CN 97114136 A 19971121; DE 69630792 T 19961122; HK 98115089 A 19981223; JP 32085797 A 19971121; KR 19970055762 A 19971029; SG 1997004122 A 19971122; TW 86115393 A 19971018; US 96648197 A 19971107