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:
Jun. 22, 1999
Filed:
Nov. 21, 1997
Manoj M Barahia, Manchester, MO (US);
Clyde Hancock, Tampa, FL (US);
MagneTek, Inc., Nashville, TN (US);
Abstract
An auxiliary bearing assembly is used to ground the shaft of an electric motor to reduce unwanted currents in the motor bearings. An auxiliary bearing is either initially mounted onto the housing of the motor or retrofitted to attach the motor, so that the shaft of the motor is in electrical and mechanical contact with the center bore of the auxiliary bearing. An electrically conductive grease is then applied via the auxiliary bearing to the shaft of the bearing that is joined to the rotor shaft. A low resistance path to ground is thereby created for the dissipation of the unwanted shaft voltages and consequently prevents harm to the machine.