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:
Dec. 04, 2012
Filed:
Jun. 18, 2010
Christophe Bifrare, Le Pont, CH;
Alain Zaugg, Le Sentier, CH;
Pierre Cusin, Villars-Burquin, CH;
Montres Breguet SA, L'Abbaye, CH;
Abstract
The invention relates to an overcoil balance spring () including a hairspring () formed in a single silicon part, coaxially with a collet (), the balance spring including a silicon terminal curve () and a silicon elevation device () between the outer coil () of said hairspring and said terminal curve so as to form a Breguet® overcoil balance spring. According to the invention, the elevation device () has a cross-shaped mechanical fastener () including at least two opposite arms ('), which cooperate with clamping means () respectively secured to the terminal curve () and the outer coil () of said hairspring.