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:
May. 25, 1999
Filed:
May. 06, 1998
Ali T Mazumder, Oklahoma City, OK (US);
BancTec, Inc., Dallas, TX (US);
Abstract
An impact hammer assembly for a high speed printer includes first and second permanent magnets having opposite poles disposed adjacent to each other and having a gap therebetween. The magnets create flux lines extending across the gap. A print hammer includes a hammer beam and a hammer head. The print hammer is movable between a rest position and a print position. The hammer beam is disposed in the gap between the first and second magnets. A coil is disposed on the hammer beam and perpendicular to the magnetic flux lines. Circuitry generates a current in the coil and controls the direction of current flow in the coil, such that when current flows in the coil in a first direction, the print hammer moves towards the print position and when current flows in the coil in a second direction, opposite to the first direction, the print hammer moves towards the rest position.