The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 13, 2010
Filed:
Nov. 13, 2006
Applicants:
Thierry Hessler, Renens, CH;
Joachim Grupp, Enges, CH;
Inventors:
Thierry Hessler, Renens, CH;
Joachim Grupp, Enges, CH;
Assignee:
The Swatch Group Research and Development Ltd, Marin, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04B 1/10 (2006.01); C03B 27/012 (2006.01);
U.S. Cl.
CPC ...
Abstract
The balance spring is made from a photostructurable glass plate by UV irradiation, thermal treatment and etching, said glass having a Young's modulus thermal coefficient CTE. The value CTEof selected zones of the balance spring are altered to a value CTEby UV irradiation through one or several masks, possibly completed by a thermal treatment.