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:
Nov. 03, 1998
Filed:
Mar. 17, 1997
Michael John Hatsios, Plymouth, MI (US);
Duane Rasmussen, Dexter, MI (US);
Richard Kenneth Harris, Walled Lake, MI (US);
Michael Timothy York, Chelsea, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
In one embodiment of the present invention a rotor for an electrical machine comprises a shaft having a radially-reduced portion, the shaft defining an axis of rotation of the rotor. The rotor additionally includes a pole piece having a bore, the pole piece mounted on the shaft for rotation therewith about the axis. Further, the rotor comprises a member located about the shaft in the radially reduced portion and interference fit within the bore of the pole piece. In a second embodiment of the present invention, an electrical machine comprises a rotor which further comprises a shaft defining an axis of rotation of the rotor, a pole piece affixed to the shaft for rotation therewith and a rotor stop slip fit onto the shaft and bearing against the pole piece. The rotor stop also bears against another component of the electrical machine to define an axial position of the rotor within the electrical machine. In another embodiment of the present invention an electrical machine includes a shaft defining an axis of rotation and having a radially-reduced portion. The electrical machine also includes a pole piece affixed to the shaft for rotation therewith about the axis of rotation, the pole piece defining an axial bore therethrough. Further, the electrical machine comprises a member located about the shaft in the radially-reduced portion of the shaft and material from the axial bore displaced into the radially-reduced portion.