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:
Jul. 20, 2010
Filed:
Apr. 26, 2007
Jean-pierre Musy, Begnins, CH;
Frédéric Maier, Neuchâtel, CH;
Stéphane Von Gunten, La Chaux-de-Fonds, CH;
Jean-Pierre Musy, Begnins, CH;
Frédéric Maier, Neuchâtel, CH;
Stéphane Von Gunten, La Chaux-de-Fonds, CH;
Patek Philippe SA Geneve, Geneva, CH;
Abstract
A balance spring-collet assembly for a timepiece movement comprises a collet () and a balance spring () attached at its inner end to the collet (). The collet () is capable of being mounted onto a shaft (). The external periphery of the collet () defines abutments () against which the inner turn of the balance spring () may come to rest during a shock before the elastic limit of the inner turn is exceeded. The abutments () are situated at respective distances (Ra, Rb, Rc) from the center (O) of the shaft () that increase in the direction (D) of the balance spring () from the inside to the outside starting at the point () of junction between the balance spring () and the collet ().