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:
Aug. 24, 2010
Filed:
May. 31, 2007
Frederic Crettex, Prangins, CH;
Frederic Crettex, Prangins, CH;
Vaucher Manufacture Fleurier S.A., Fleurier, CH;
Abstract
Timepiece with a perpetual calendar number mechanism, including: a time switch, a display device including a mobile () whose position is determined by the calendar month number, a correction device () cooperating with the display device and guaranteeing its drive at the end of months having less than thirty-one days. This mechanism includes, in addition: a month mechanism () with a period of one year and including a cam advancing by steps, one step per month, a programming mechanism () driven by the time switch and cooperating with the month mechanism () and having a mobile () cooperating with the correction mechanism () to make it advance, during the month, by as many steps as the month counts days in less than thirty-one days. This mechanism enables the energy required to perform the correction to be withdrawn during the month, and restored at the time of the automatic correction.