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:
Apr. 23, 2013
Filed:
Dec. 15, 2009
Alain Zaugg, Le Brassus, CH;
Christophe Bifrare, Le Pont, CH;
Sacha Vorpe, Sonvilier, CH;
Jean-philippe Thiebaud, Cudrefin, CH;
Marc Lippuner, Grenchen, CH;
Alain Zaugg, Le Brassus, CH;
Christophe Bifrare, Le Pont, CH;
Sacha Vorpe, Sonvilier, CH;
Jean-Philippe Thiebaud, Cudrefin, CH;
Marc Lippuner, Grenchen, CH;
Montres Breguet SA, L'Abbaye, CH;
Abstract
The invention relates to a silicon-based Breguet overcoil balance spring () that includes a hairspring () made integral coaxially with a collet (), a terminal curve () and an elevation device () between the outer coil () of the hairspring and the terminal curve. According to the invention, the balance spring has two single parts secured to each other to increase the development precision of the balance spring. The invention also relates to the method of manufacturing the balance spring. The invention concerns the field of timepiece movements.