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:
Jan. 11, 2000
Filed:
Oct. 09, 1998
Applicant:
Inventors:
Wolfgang Fehrenbacher, St. Georgen, DE;
Mojtabe Moini, Konigsfeld, DE;
Fritz Schmider, Hornberg, DE;
Assignee:
Papst-Motoren GmbH & Co. KG, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310257 ; 310156 ;
Abstract
A mini-fan unit for cooling a printed circuit board has a collectorless dc motor and a fan wheel driven by the dc motor. The dc motor is a single phase, single core claw pole motor having a back iron free permanent magnet rotor. At least one positioning magnet defines the starting position of the dc motor.