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. 20, 2007
Filed:
Aug. 07, 2003
B. Mark Hirst, Boise, ID (US);
B. Mark Hirst, Boise, ID (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
Scanning assemblies, printing devices, and related methods are described. In one embodiment, pole pieces are configured to be coupled with an input voltage source that can produce phase-shifted input voltages, the pole pieces defining at least first and second phases. A rotor is operably associated with the pole pieces for rotation. The pole pieces and the rotor are configured as an induction drive system in which a rotational force for rotating the rotor is produced through interaction of rotor-induced eddy currents from each of the first and second phases with respective magnetic fluxes of the other of the first and second phases.