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:
Aug. 07, 2018
Filed:
Feb. 23, 2016
Applicant:
George Auther Spencer, Athens, TX (US);
Inventor:
George Auther Spencer, Athens, TX (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F03D 13/20 (2016.01); F03D 3/06 (2006.01);
U.S. Cl.
CPC ...
F03D 13/20 (2016.05); F03D 3/067 (2013.01); F05B 2240/218 (2013.01); Y02E 10/74 (2013.01);
Abstract
A vertical axis windmill comprises three or more frames rotatable in unison about a substantially vertical axis and a plurality of airfoils hingedly affixed to each frame. Each airfoil is able to swing away from its respective frame in a first direction from a closed position to an open position and not able to swing away from its respective frame in a second direction from the closed position.