Title:
DEVICE FOR SECURING A CRYSTAL TO A WATCH CASE
Document Type and Number:
WIPO Patent Application WO/2015/104252
Kind Code:
A3
Abstract:
The invention relates to a method for securing a crystal to a watch case, in which: at least one thin intermediate layer is attached by means of surface treatment to a zone of the surface of the crystal that is intended to come into contact with a corresponding zone of the watch case and/or to said corresponding zone of the watch case, said thin intermediate layer allowing the migration of ions and/or electrons; the aforementioned zones of the watch case and the crystal are applied against one another; the watch case/crystal assembly is heated to a sufficiently low heating temperature to guarantee that none of the materials forming the system leaves the solid phase; the crystal is connected to an electrode and the watch case is connected to a counter-electrode, and a voltage is applied between the electrode and the counter-electrode that accelerates the diffusion of the charged particles and thus creates new metallic, ionic or covalent bonds. The invention also relates to a watch case obtained using this method.
Inventors:
BRUN SÉBASTIEN (CH)
GUERIN DELETANG SANDRINE (FR)
KEPPNER HERBERT (CH)
FARINE SOPHIE (CH)
GUYOT ERIC (FR)
GUERIN DELETANG SANDRINE (FR)
KEPPNER HERBERT (CH)
FARINE SOPHIE (CH)
GUYOT ERIC (FR)
Application Number:
PCT/EP2015/050085
Publication Date:
December 23, 2015
Filing Date:
January 06, 2015
Export Citation:
Assignee:
CARTIER INTERNAT AG (CH)
International Classes:
G04B39/02
Foreign References:
| CH678680GA3 | 1991-10-31 | |||
| EP0066538A1 | 1982-12-08 | |||
| EP0127078A1 | 1984-12-05 | |||
| US20110050043A1 | 2011-03-03 |
Attorney, Agent or Firm:
MICHELI & CIE SA (CP 61, Thônex, CH)
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