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:
Mar. 21, 2006
Filed:
Sep. 30, 2004
Jean-jacques Born, Morges, CH;
Pierre-andré Farine, Neuchatel, CH;
Jean-Jacques Born, Morges, CH;
Pierre-André Farine, Neuchatel, CH;
Asulab S.A., Marin, CH;
Abstract
There is disclosed a timepiece having a mechanical clockwork-movement () driven by a barrel spring () and provided with a mechanical regulator, with a balance and a balance spring, which is associated, via electromagnetic coupling, with an electronic regulator driven by a quartz resonator. The rim of the balance () balance is provided with at least one pair of permanent magnets (). The electronic regulator includes a fixed coil () arranged for cooperating with said magnets via electromagnetic coupling, a rectifier () provided with at least one capacitor, and a circuit for enslaving the frequency of the mechanical regulator to the oscillator frequency by braking obtained by briefly short-circuiting the coil. In order to use a mechanical movement of a common type, in which only the balance is altered, the coil () is located on the side of the balance-cock () with respect to the balance rim. The pair of magnets () is covered by a plate of magnetic material in order to close field lines on the side of the plate. Apart from the coil, all of the rest of the electronic module () is located outside the mechanical movement.