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:
Jul. 21, 2015
Filed:
Dec. 20, 2010
Applicants:
Jonathan E. Mccallum, Edmonton, CA;
Andrew L. Norell, Edmonton, CA;
George Antoszko, Edmonton, CA;
Mariusz Kloza, Darien, IL (US);
Inventors:
Jonathan E. McCallum, Edmonton, CA;
Andrew L. Norell, Edmonton, CA;
George Antoszko, Edmonton, CA;
Mariusz Kloza, Darien, IL (US);
Assignee:
Flexxaire Inc., Edmonton, Alberta, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04D 29/36 (2006.01); F04D 25/08 (2006.01);
U.S. Cl.
CPC ...
F04D 29/362 (2013.01); F04D 25/08 (2013.01); F05D 2260/74 (2013.01); F05D 2260/76 (2013.01);
Abstract
A compact variable pitch fan has a drive fluid pitch change mechanism. A pitch change piston is constrained to follow reciprocating motion under drive fluid control within a peripheral hub from which fan blades extend outward. A pitch change sensor is mounted with the rotary union.