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:
Jul. 09, 2002
Filed:
May. 24, 2000
Dewain L. Wasson, Hudson, WI (US);
McMillan Electric Company, Woodville, WI (US);
Abstract
In one embodiment of the present invention, an electric motor is provided. A component of the electric motor, the commutator assembly, has a commutator and a brush assembly. The brush assembly encloses conductive brushes that are in contact with the commutator. A shaft is rotatably mounted about an axis, and a bearing is disposed around the shaft. The commutator is connected to the shaft, and a first seal surrounds the commutator. The first seal substantially isolates the commutator assembly from the internal ambient atmosphere of the electric motor. Further, a second seal substantially isolates the shaft and the bearing from the commutator and the conductive brushes.