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. 06, 1994
Filed:
May. 08, 1990
Jean-Philippe Rebeaud, Cressier, CH;
ETA SA Fabriques d'Ebauches, Grenchen, CH;
Abstract
The earth ring (8) bears the lunar disc (9) which pivots in a hollow of the surface (8a). On its outer periphery it possesses teeth (17) for driving it from the final wheel set (15) of the stepping transmission gear train (15,24,12). The driving wheel set (12) is activated one step per day from the date wheel. The pinion (20) of the lunar disc (9) is in mesh with the outer teeth (22), normally fixed but which may be displaced by means of the correction arrangement controlled by the stem (30) when it is turned in a predetermined sense. The same correction arrangement also enables one to act on the transmission train (12, 14,15,17). The stem (30) is then driven in a sense opposite to the above which displaces the sliding pinion (36) and enables correction of the position of the lunar disc (9) relative to the earth ring (8) this latter normally effecting a complete rotation in twelve months and the lunar disc (9 ) a complete rotation in about 29.5 days.