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:
Mar. 18, 2008
Filed:
Dec. 22, 2005
Applicants:
Mark E. Baer, Trout Run, PA (US);
Kevin L. Beckstead, Windsor, NY (US);
Inventors:
Mark E. Baer, Trout Run, PA (US);
Kevin L. Beckstead, Windsor, NY (US);
Assignee:
Shop Vac Corporation, Williamsport, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 7/74 (2006.01); H01H 9/00 (2006.01); H02K 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A motor is disclosed that operates on either AC outlet power or DC battery power with decreased power drop when switching between AC and DC power. The AC power to the motor may be stepped down by using a clipper circuit, while the DC power supplied to the motor may be increased by switching motor field windings from a series wound circuit to a parallel wound circuit. The motor may be used in a vacuum motor embodiment, or in other consumer devices that utilize electric motors.