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:
Feb. 22, 1994
Filed:
Jun. 14, 1993
Ekkehard Bolte, Aachen, DE;
U.S. Philips Corporation, New York, NY (US);
Abstract
The invention relates to a fan unit for generating gas streams, in particular for vacuum cleaners, which unit comprises a motor (4) and an impeller wheel (1) which is also electromagnetically active and in conjunction with electromagnetically active parts (19) of the motor stator (3) generates the torque of the impeller wheel via an air gap (11) formed between radial surfaces of the impeller wheel and the motor stator, the electromagnetically active part of the impeller wheel (1) being a conductive disc (7) which is arranged in a radial plane and which has one radial surface (8) bounding the air gap (11) at the rotor side, and the air gap being bounded at the stator side by planar stator poles (19) formed on a radial bounding surface (12) of an iron cylinder (15) by the provision of radial slots (17) in which the coils (20) are arranged.