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:
May. 09, 2017
Filed:
Nov. 19, 2014
Applicant:
Eta SA Manufacture Horlogere Suisse, Grenchen, CH;
Inventors:
Thierry Conus, Lengnau, CH;
Jean-Luc Helfer, Le Landeron, CH;
Andres Cabezas Jurin, Yverdon, CH;
Patrick Gasser, Ittigen, CH;
Assignee:
ETA SA Manufacture Horlogere Suisse, Grenchen, CH;
Primary Examiner:
Int. Cl.
CPC ...
G04B 17/06 (2006.01); G04B 17/26 (2006.01);
U.S. Cl.
CPC ...
G04B 17/26 (2013.01); G04B 17/06 (2013.01); G04B 17/066 (2013.01);
Abstract
A balance spring includes a strip of polygonal section wound on itself into several coils. At least one coil of the balance spring includes a coil spacer device including at least four stop members mounted on the same face and protruding from the thickness of the at least one coil of the strip. Each of the at least four stop members is arranged to enter into contact with the opposite face of another coil of the strip preventing the other coil from touching the at least one coil in the event of a shock.