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:
Jun. 09, 1987
Filed:
Jul. 25, 1986
Wolfgang Kroner, Pforzheim, DE;
Pforzheimer Uhren-Rohwerke PORTA GmbH, Pforzheim, DE;
Abstract
The operating mechanism for a watch indicating arrangement, especially for a date indicating structure of an electrically operated wristwatch provided with an indicating element which is advanced periodically and operated by a drive mechanism associated with the watch, the operating mechanism includes a non-uniform transmission gear structure with a driving and a driven gear which have at least one engagement mode in which the non-uniform rotational speed of the driven gear is relatively low while the available torque is relatively high and the driven gear has associated therewith means for engaging the indicating structure for advancing the indicating element a predetermined step with each revolution of the driven gear wherein the means for engaging the indicating element are so arranged that engagement of the indicating element for its advance takes place while the non-uniform transmission is in the highest torque providing engagement mode.