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:
Mar. 04, 1986
Filed:
Jul. 07, 1983
Heinz Wieland, Waldenburg, DE;
Wilhelm Gebhardt GmbH, Waldenburg, DE;
Abstract
An external rotor motor used in drying fans and blowers provides an air current within a hollow fixed post which passes through the stator of the motor so that heat is transferred to the air current from the stator interior and transported by the air current to the end of the hollow post. At the end of the hollow post there is an air foil mounted normal to the post and designed for producing a radial air flow in a space between the air foil and the end plate of the rotor. An air flow produced by the impellers mounted to the rotor draw the air from the space and produces the current of air in the hollow post which thereby removes heat from the stator. Heat pipes may also be mounted within the hollow shaft to remove heat from the stator.