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:
May. 31, 2011
Filed:
Oct. 26, 2009
Alain Zaugg, Le Brassus, CH;
Christophe Bifrare, Le Pont, CH;
Alain Zaugg, Le Brassus, CH;
Christophe Bifrare, Le Pont, CH;
Montres Breguet S.A., L'Abbaye, CH;
Abstract
The invention relates to a Breguet overcoil balance spring () that includes a hairspring () mounted in a single part, made of micro-machinable material, and coaxially with a collet (). According to the invention, the balance spring has a terminal curve () made of micro-machinable material and an elevation device () made of micro-machinable material between the outer coil () of the hairspring and the terminal curve to improve the concentric development of the balance spring. The invention also relates to the method of manufacturing the balance spring. The invention concerns the field of timepiece making.