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:
Oct. 04, 2016
Filed:
Mar. 20, 2009
Pierre-andré Bühler, Orvin, CH;
Marco Verardo, Les Bois, CH;
Thierry Conus, Lengnau, CH;
Jean-philippe Thiebaud, Cudrefin, CH;
Jean-bernard Peters, La Chaux-de-Fonds, CH;
Pierre Cusin, Villars-Burquin, CH;
Pierre-André Bühler, Orvin, CH;
Marco Verardo, Les Bois, CH;
Thierry Conus, Lengnau, CH;
Jean-Philippe Thiebaud, Cudrefin, CH;
Jean-Bernard Peters, La Chaux-de-Fonds, CH;
Pierre Cusin, Villars-Burquin, CH;
Nivarox-FAR S.A., Le Locle, CH;
Abstract
The invention relates to a double balance spring () including, made in a layer of silicon-based material (), a first balance spring () coaxially mounted on a collet (), the collet () including an extending part () that projects from said balance spring and which is made in a second layer of silicon-based material (). According to the invention, said extending part extends () into a third layer () of silicon-based material coaxially with a second balance spring () so as to form a one-piece double balance spring () made of silicon-based materials. The invention also relates to a timepiece including a balance spring of this type and the method of manufacturing the same. The invention concerns the field of timepiece movements.