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. 02, 2010
Filed:
Jun. 16, 2005
Applicants:
Jonathan E. Mccallum, Edmonton, CA;
Kevin J. Dewar, Edmonton, CA;
Inventors:
Jonathan E. McCallum, Edmonton, CA;
Kevin J. Dewar, Edmonton, CA;
Assignee:
Flexxaire Manufacturing Inc., Edmonton, CA;
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
An engine fan has fan blades capable of switching between a sucking and blowing operation when the fan is not in operation. An internal mechanism allows for blade pitch adjustment of all fan blades by twisting one blade about its own axis. End positions of the blade rotation may be held by forces generated by the rotating blades or held by a locking mechanism.