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:
Sep. 02, 1980
Filed:
Apr. 28, 1978
David C Hamilton, Ridgewood, NJ (US);
Joseph W Fleming, Ramsey, NJ (US);
Ramsey Controls, Inc., Mahwah, NJ (US);
Abstract
The present invention discloses a stator assembly for a dual three phase inverter-driven motor. The stator assembly includes: a radially disposed matrix of phase belts each having several pole groups, such phase belts being disposed at fixed radii from the axis of the rotor of the motor, each of the pole groups therein comprising twelve stator slots; a first plurality of three phase motor windings, each of such windings having a span length of either stator slots within its respective pole group, each pole group winding of said first plurality of motor windings having two coils per pole group, the first of such coils of each pole group being wound upon the i and i+8 stator slots, and the second coil of each pole group being wound upon the i+1 and i+9 stator slots; and a second plurality of three phase motor windings, each of such windings having a span length of eight stator slots, each pole group winding of said second plurality of motor windings having two coils per pole group, the first coil of each pole group being would upon the i+2 and i+10 stator slots, and the second coil of each pole group being wound upon the i+3 and i+11 stator slots, said two pluralities of motor windings thereby being symmetrically disposed about opposite ends of each phase belt pole group so as to leave the central four slots of each phase belt pole group free of any windings.