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:
Mar. 18, 2008
Filed:
Apr. 21, 2004
Applicants:
Jean-pierre Musy, Begnins, CH;
Frédéric Maier, Neuchatel, CH;
Michel Belot, Colombier, CH;
Inventors:
Assignee:
Patek, Philippe SA, Geneva, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G04B 17/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A regulating device including a balance () and a plane hairspring () for a time piece movement, the plane hairspring () including a stiffened portion () in its outer turn () that is arranged to cause the deformations of the turns to be substantially concentric. The spacing (d) between a terminal portion of the outer turn () and the last-but-one turn () of the hairspring () is large enough for said last-but-one turn () to remain free radially during expansions of the hairspring () up to amplitudes corresponding substantially to the maximum angle of rotation of the balance () in the movement.