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:
Feb. 22, 2011
Filed:
Jul. 18, 2007
Applicants:
Xuan Mai Tu, Ecublens, CH;
Michel Schwab, Bienne, CH;
Inventors:
Xuan Mai Tu, Ecublens, CH;
Michel Schwab, Bienne, CH;
Assignee:
Isa France S.A., Villers-le-Lac, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04F 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The electromechanical escapement device is associated with an electronic circuit having a quartz oscillator and calculation means suitable for calculating the difference between the period of the quartz oscillator and the period of a mechanical oscillator and releasing an escape wheel, normally controlled by said mechanical oscillator, when the difference between said periods is greater than a threshold value.