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:
Aug. 17, 1976
Filed:
Sep. 30, 1974
Applicant:
Inventor:
Robert J Hammond, Stevensville, MI (US);
Assignee:
V-M Corporation, Benton Harbor, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 41 ; 310 76 ; 310164 ; 192 44 ;
Abstract
The invention provides a quiet, reliable and quick acting 'no-back' action for synchronous motors utilizing permanent magnet rotors which have minimum power in self-starting and are prone to be erratic in direction of starting. This fallibility arises at least in part from the expense and difficulty of working to the accuracy which would be required to make the motor less uncertain in starting.