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, 1987
Filed:
Jun. 20, 1986
Applicant:
Inventor:
Myron Schwartz, St. James, NY (US);
Assignee:
501 Aeroflex Laboratories, Incorporated, Plainview, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310152 ; 310156 ;
Abstract
A three phase, permanent magnet rotor, AC electric motor includes a twenty-four unskewed slot stator wound in a three phase arrangement and an eight pole permanent magnet rotor in which the rotor pole pieces are unskewed and angularly displaced from equally 45.degree. spaced reference positions about the rotor by different amounts which are integral multiples of 1.875.degree.. The cogging frequency is eight times higher and the cogging torque are eighth that of a corresponding motor with a conventional permanent magnet rotor.