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:
Mar. 21, 1989
Filed:
Mar. 16, 1988
Pierre Schmidli, Evilard, CH;
ETA SA Ebauches, , CH;
Abstract
The watch includes a time-keeping circuit, a first motor, hands driven by the motor to display the time, an index that moves forward by 1/35th of a revolution per 24 hours, a stationary graduation having inscribed thereon 35 days of 5 consecutive weeks, a mobile graduation divided into 35 parts and bearing numbers 1 to 31 for the ordinals of the month, a second motor that drives the mobile graduation in steps of 1/35th of a revolution, a calendar circuit issuing a signal that is representative of the month and a signal that is representative of the year, and a correction circuit connected to the calendar circuit and issuing a control signal to the second motor. At the end of each month, the mobile graduation is moved by the second motor through N steps (N=4,5,6 or 7) such that number 1 thereon comes to lie opposite the index at the beginning of the following month. The two graduations provide the correspondence between the days of the week and the ordinals of the month for the current month whereas the index indicates the actual day of the week and ordinal of the month.