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:
Oct. 14, 2003
Filed:
Apr. 18, 2001
Michael A. Parisi, Fairport, NY (US);
Judith L. Hannon, Rochester, NY (US);
Xerox Corporation, Stamford, CT (US);
Abstract
A control circuit is provided for use in an electromagnetic device with a coil where the electromagnetic device is actuated with an actuating current and held in an operative condition by a holding current with the holding current being significantly lower in magnitude than the actuating current. The control circuit includes first and second transistors wherein, during a powered mode, the first transistor is disposed in an on state and the second transistor is disposed in an off state, and, during a shorted mode, the first transistor is disposed in an off state and the second transistor is disposed in an on state. Additionally, a power source selectively communicates with the coil, and during a first time interval, the power source communicates with the coil in the powered mode and, during a second time interval, the power source is disconnected from the coil in the shorted mode.