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. 19, 2008
Filed:
Jul. 29, 2004
Terence G. Ward, Redondo Beach, CA (US);
Khwaja M. Rahman, Torrance, CA (US);
James M. Nagashima, Cerritos, CA (US);
Fabio Crescimbini, Rome, IT;
Federico Caricchi, Rome, IT;
Giorgio Lucchi, Rimini, IT;
Terence G. Ward, Redondo Beach, CA (US);
Khwaja M. Rahman, Torrance, CA (US);
James M. Nagashima, Cerritos, CA (US);
Fabio Crescimbini, Rome, IT;
Federico Caricchi, Rome, IT;
Giorgio Lucchi, Rimini, IT;
General Motors Corporation, Detroit, MI (US);
Abstract
Methods and apparatus are provided for an axial electric motor. The apparatus comprises, a stator having coils thereon for producing a magnetic field, a rotor rotated by the magnetic field, an output shaft coupled to the rotor, and a ring incorporating a coolant channel circumferentially engaging the stator for absorbing heat and reaction torque from the stator. It is preferable that that the ring have inwardly extending teeth that mesh with the coils on the stator. The space between the teeth and the coils is preferably filled with a substantially solid thermally conductive material to transmit stator reaction torque to the teeth and cool the stator. The coils are preferably formed from a flat ribbon a portion of whose principal surface is perpendicular to the teeth. A supporting frame is desirably fixedly coupled to the ring and rotatably coupled to the output shaft.