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:
Dec. 28, 1993
Filed:
Mar. 23, 1993
Ko Yamazaki, Tokyo, JP;
Seiko Instruments Inc., , JP;
Abstract
A high reliable multi-function analog electronic timepiece which has plurality of ultrasonic motors, or has an ultrasonic motor and a motor. A first ultrasonic motor is provided as a driving source for driving a time indicating mechanism. The control circuit controls supplying timing of driving pulses of the first ultrasonic motor for driving a time indicating mechanism and driving pulses of the second ultrasonic motor for driving the calendar indicating mechanism. The control circuit inputs a driving pulse command signal to a piezoelectric vibrator driving circuit for providing driving pulses whose generating timing is controlled to the first ultrasonic motor. The calendar indicating mechanism and the time indicating mechanism are operated by the operation of the second ultrasonic motor and the first ultrasonic motor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile