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. 14, 1998
Filed:
Apr. 25, 1997
Ermanno Bernasconi, Neuchatel, CH;
Asulab S.A., Bienne, CH;
Abstract
The timepiece comprises an electrical energy generator (3) comprising a rotor (3a) and means (3b) for supplying said electrical energy in response to rotation of said rotor (3a), a source of mechanical energy (2), measuring means (Trig) coupled to said generator (3) for producing measurement pulses of the angular frequency of an alternating voltage supplied by the generator (3), braking means (K) responsive to a braking command signal for applying a braking torque to said rotor (3a), an electronic circuit (1) comprising reference means (Osc) for producing a reference signal (FR), and slaving control means (Div, Cmp, Tmr) arranged to control said braking means (K) when said measurement pulses are ahead with respect to the reference signal.