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:
Feb. 26, 1991
Filed:
Dec. 16, 1988
Michael P Goldowsky, Valhalla, NY (US);
Teiji Hisano, Fujisawa, JP;
John P Karidis, Ossining, NY (US);
Hiromi Shibuya, Fujisawa, JP;
Osamu Ueda, Yokohama, JP;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A print actuator for a dot matrix printer has a stator with a frame, at least two ferromagnetic poles and at least one permanent magnet; and at least one electromagnetic coil surrounding the magnet. The magnet can generally hold an armature in a home position by its magnetic flux until the coil is energized at which point the magnetic flux of the magnet is neutralized by the magnetic flux of the coil and the armature is substantially released of influence from the magnet's hold.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile