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:
Dec. 15, 2009
Filed:
Oct. 26, 2006
Robert T Dawsey, Torrance, CA (US);
Constantin C. Stancu, Anaheim, CA (US);
Eric R. Ostrom, Bellflower, CA (US);
Young Doo, La Palma, CA (US);
Robert T Dawsey, Torrance, CA (US);
Constantin C. Stancu, Anaheim, CA (US);
Eric R. Ostrom, Bellflower, CA (US);
Young Doo, La Palma, CA (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A coaxial stack of laminations for a stator of an electrical machine uses laminations that are substantially identical and in direct abutment with one another. Each of the laminations has an outer periphery and an inner periphery with the outer periphery being defined by an array of outwardly projecting pins and the inner periphery being defined by an array of inwardly projecting teeth. The outwardly projecting pins cooperate with a jacket surrounding the stack to provide a cooling space through which cooling liquid flows while the teeth provide spaces therebetween for receiving for receiving stator windings. The number of pins (n) is proportional to the number of teeth (n) according to the relationship (2K+1)/(2K) times the number of teeth (n), where K is a selected integer number and Kis the number of teeth past which each lamination is rotated with respect to adjacent laminations so that spaces between the teeth of adjacent laminations are aligned.