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. 12, 2022
Filed:
Apr. 07, 2017
Applicant:
Orville J. Birkestrand, Davenport, IA (US);
Inventor:
Orville J. Birkestrand, Davenport, IA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03D 9/28 (2016.01); F03D 7/02 (2006.01); F03D 1/06 (2006.01);
U.S. Cl.
CPC ...
F03D 9/28 (2016.05); F03D 1/0633 (2013.01); F03D 7/0276 (2013.01); F05B 2220/706 (2013.01); F05B 2240/2211 (2013.01); F05B 2270/101 (2013.01); F05B 2270/301 (2013.01);
Abstract
A power generating windmill having a plurality of blade extending radially outward from a central rotor in position to be engaged by a moving fluid stream is provided. Each blade partially overlaps the blade prior to and behind it to increase lift forces on the blades.