Train structure of a timepiece
Patent 4125994 Issued on November 21, 1978. Estimated Expiration Date: 
October 6, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 6, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3350873 Calender timepiece movement comprising three indicators Patent #: 3939645 InventorsAssigneeApplicationNo. 05/730206 filed on 10/06/1976US Classes:368/323, CANNON PINION DETAILS968/289With second hand arranged in the center of the dial [G04B 33/10]ExaminersPrimary: Schaefer, Robert K.Assistant: Pojunas, Leonard W. Jr. Attorney, Agent or FirmInternational ClassesG04B 19/00 (20060101)G04B 19/02 (20060101) G04B 19/247 (20060101) G04B 33/00 (20060101) G04B 33/10 (20060101) Foreign Application Priority Data1975-10-07 JPAbstractA timepiece gear train structure comprises a center wheel and pinion mounted between a third wheel bridge and a date wheel holder without use of a train wheel bridge as is customarily used in such gear train structures. A plate extends between the third wheel bridge and the date wheel holder and has an opening therein through which extends the intermediate part of the center wheel and pinion thereby rotably supporting the intermediate part thereof. The lower part of the center wheel and pinion is rotatably supported by the date wheel holder by means of a cannon pinion which encircles the lower part, an hour wheel which encircles the cannon pinion and a bush encircling a portion of the hour wheel and being fixed to the date wheel holder. | |
