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. 12, 1988
Filed:
May. 12, 1986
Wolfgang Burkhardt, Ispringen, DE;
Pforzheimer Uhren-Rohwerke Porta GmbH, Pforzheim, DE;
Abstract
In a power supply control arrangement for the stepping motor of a watch an integrated circuit structure is disposed between the stepping motor and its energy source for controlling the supply of drive pulses to the motor. The circuit structure includes means for detecting the motor's non-response and means for supplying a correction pulse upon detection of non-response of the motor. There are further means for applying drive pulses of increased duration following such correction pulse for overcoming excessive loads and also means for shutting off the correction pulse or the energy source if the motor does not respond to the drive pulses of increased duration.