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:
Jan. 08, 2013
Filed:
Sep. 16, 2010
Applicant:
Jerome Daout, Rolle, CH;
Inventor:
Jerome Daout, Rolle, CH;
Assignee:
Rolex S.A., Geneva, CH;
Primary Examiner:
Int. Cl.
CPC ...
G04B 17/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
This flat balance spring for a horological balance comprises a wound strip shaped to ensure an approximately concentric development of the balance spring and almost zero force on the pivots and on the fixing point, during a rotation of less than 360° of its inner end relative to its outer end in both directions from its rest position. The stiffness of its strip decreases gradually and through more than 360° from each of its two ends, the lowest stiffness being situated in the median part of the strip.