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:
Jan. 23, 2018
Filed:
Mar. 19, 2015
Eta SA Manufacture Horlogere Suisse, Grenchen, CH;
ETA SA Manufacture Horlogere Suisse, Grenchen, CH;
Abstract
An electronic clock mechanism includes an analog display device including a ring of dates and a stopwatch hand associated with a graduation of a small counter. The ring and hand are driven by a same electric motor via a permanent gear train, the hand being mounted on a wheel of the permanent gear train, the wheel arranged between a motor pinion and a movable element including a date driving wheel. The ring and date driving wheel respectively include two sets of teeth forming a permanent gear having a relatively large clearance to define a dead angle region for the date driving wheel as the ring is positioned by a jumper. The dead angle region is used to drive the stopwatch hand independently of the ring. The permanent gear train is arranged such that torque for positioning the rotor creates for the date driving wheel a blocking torque for shock-resistance.