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:
Oct. 04, 1988
Filed:
Mar. 19, 1987
Jan Janson, Eindhoven, NL;
U.S. Philips Corporation, New York, NY (US);
Abstract
An electric motor comprises a rotor (20), an annular stator coils (44A, 44B), and a stator body having a central stator portion (24A, 24B) which is disposed coaxially around the rotor shaft (18) and a number of stator teeth. The stator teeth each have a proximal portion (28) secured to the central stator portion and a distal portion (30) having an axial pole face (30A) adapted to cooperate with an axially magnetized ring (20A) of the rotor. Half of the stator teeth also comprise an axial tooth portion (42) which extends between the proximal portion and the distal portion of the relevant stator tooth, because the proximal portions and the distal portions of these teeth are disposed in different axially spaced radial planes. The stator coils are disposed in the space between the central stator portion and all the axial tooth portions.