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:
Nov. 12, 2019
Filed:
Aug. 25, 2017
Montres Breguet S.a., L' Abbaye, CH;
Benoit Legeret, Ecublens, CH;
Davide Sarchi, Zurich, FR;
Montres Breguet S.A., L'Abbaye, CH;
Abstract
Timepiece movement including a mechanism, a spring barrel for driving the mechanism, and an equalization device connected to the spring barrel. The spring barrel includes a drum and a motor spring to exert a driving torque which is variable as a function of the degree of winding-up of the motor spring. The equalization device is driven by the spring barrel and exerts an auxiliary torque which varies as a function of the degree of winding-up of the motor spring to counter variations in the motor torque. The equalization device includes a first and second magnetic elements being displaced from each other by exerting a magnetic force which varies as a function of the relative position of the first and second magnetic elements and produces the auxiliary torque.