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. 12, 1998
Filed:
Jul. 31, 1997
Applicant:
Inventors:
Pierre-Andre Farine, Neuchatel, CH;
Jean-Jacques Born, Morges, CH;
Assignee:
Asulab S.A., Bienne, CH;
Primary Examiner:
Int. Cl.
CPC ...
G04B / ; G04B / ;
U.S. Cl.
CPC ...
368140 ; 368203 ; 368204 ;
Abstract
The integrated circuit (11) of this timepiece comprises means (16, 17, 18) for comparing the frequency of a time base (12, 13) to the frequency of the generator (1). The error signal thereby generated is examined by a wired logic (20) allowing verification of whether this signal passes distinct threshold values. Passing of two of these values allows an electric brake (22) of the generator to be controlled so that from a certain degree of depletion of the power reserve of the barrel (5), the second hand moves periodically right away over an angle of several seconds inviting the wearer of the timepiece to rewind the spring (6) of the barrel (5).