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:
Apr. 19, 2016
Filed:
Apr. 24, 2013
Eta SA Manufacture Horlogere Suisse, Grenchen, CH;
Laurent Kaelin, Sonvilier, CH;
Arthur Queval, Lutry, CH;
Marco Rochat, Le Brassus, CH;
Thierry Conus, Lengnau, CH;
ETA SA Manufacture Horlogère Suisse, Grenchen, CH;
Abstract
A method for fabricating a barrel arbor for a timepiece includes wire drawing a bar to form a continuous profile, projecting or re-entrant relative to a support sector having a touching-up axis parallel to the bar axis, and whose section matches that of complementary hooking to be made on the arbor and, in a touching-up operation, machining the complete external contour of the arbor. A drive element includes a determined spiral-coiled mainspring including at an inner end hooking having a defined profile and an arbor produced by this method including the support sector for supporting the first coil, and a complementary hooking having a complementary profile to the profile for pivoting together with the mainspring.