Title:
穴石の製造方法
Document Type and Number:
Japanese Patent JP6626179
Kind Code:
B2
Abstract:
A method for manufacturing a hole jewel, including forming a precursor from a mixture of at least one powder material with a binder; pressing the precursor, with upper lower dies, to form a green body of the future hole jewel including a blind cavity having a height between a height of the green body and a height of the future hole jewel, the cavity being provided with upper and lower portions respectively including blanks of a through hole and of a functional element of the future hole jewel; sintering the green body to form a body of the future hole jewel; machining the body, including a first sub-step of shaping a top of the body, during which a height of the upper portion is configured in readiness for an opening in the through hole blank for connecting the functional element to the upper surface, and a second sub-step of shaping a base of the body to form a lower surface of the hole jewel for connecting the functional element to to the lower surface.
More Like This:
| WO/2013/087173 | SHOCK-PROOF BEARING FOR A TIMEPIECE |
| JP5782195 | How to form a transparent integrated watch component |
Inventors:
Bruno Bestitti
Thierry Cordier
Pascal Chopard-Lalier
Thierry Cordier
Pascal Chopard-Lalier
Application Number:
JP2018210224A
Publication Date:
December 25, 2019
Filing Date:
November 08, 2018
Export Citation:
Assignee:
Coma Deal S.A.
International Classes:
G04B31/06; G04B31/004
Domestic Patent References:
| JP2014172401A | ||||
| JP574510A | ||||
| JP56125274A |
Foreign References:
| CH561924B5 | ||||
| CH495801A3 | ||||
| CH371387A3 |
Attorney, Agent or Firm:
Shigeki Yamakawa
Masaki Yamakawa
Masaki Yamakawa