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. 07, 2006
Filed:
Jul. 23, 2004
Stan Simpson, St. Thomas, CA;
Bryan Todd Fisher, Appin, CA;
Stan Simpson, St. Thomas, CA;
Bryan Todd Fisher, Appin, CA;
Siemens VDO Automotive Inc., Chatham, CA;
Abstract
An electric motor () has an armature structure () including a shaft (), a lamination stack () coupled with the shaft, a commutator () coupled with the shaft, and windings () carried by the lamination stack and connected to the commutator. Brushes () engage the commutator to deliver electric current to the windings. The motor includes a frame structure () carrying permanent magnets (), at least one sleeve bearing () operatively associated with an end of the shaft to support the shaft for rotation, and a unitary bearing retainer structure () coupled with the frame structure and holding the at least one sleeve bearing. The retainer structure is constructed and arranged 1) to prevent movement of the retainer structure in a direction towards the end of the shaft, 2) to provide a spring force against the frame structure to prevent the retainer structure from moving in a direction away from the end of the shaft, and 3) to control endplay of the armature structure by controlling engagement of the retainer structure with the frame structure.