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. 22, 2013
Filed:
Jul. 08, 2011
Richard Bossart, Lausanne, CH;
Jerome Daout, Rolle, CH;
Richard Bossart, Lausanne, CH;
Jerome Daout, Rolle, CH;
Rolex S.A., Geneva, CH;
Abstract
The present invention relates to a hairspring for a timepiece hairspring-balance oscillator, which can be produced, in particular, from a low-density material such as silicon, diamond or quartz, and to a method of manufacturing such a hairspring. According to the invention, this hairspring comprises at least one leaf () the cross section of which has a thickness and a height and its characterizing feature is that the leaf () comprises a plurality of apertures () extending in the heightwise direction of the leaf and alternating with bridges (). The invention also relates to a method of manufacturing such a hairspring.