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:
Sep. 17, 1985
Filed:
Jun. 14, 1983
Mai Tu Xuan, Chavannes, CH;
Omega SA, Bienne, CH;
Abstract
An energizing method for a timepiece stepping motor provides just sufficient energy to the motor winding to assure a single step of the rotor with each driving pulse. With each pulse the winding is initially energized at a constant voltage (period T.sub.1) then at a constant current (period T.sub.2) between two limits Imax and Imin. When the time period .DELTA.T.sub.3 required for the current to pass from Imax to Imin is greater than a reference time period .DELTA.T.sub.ref. the energization is terminated. The invention may be employed in a wristwatch with the purpose of reducing energy consumption and increasing battery life.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile