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:
Oct. 12, 2021
Filed:
Apr. 24, 2019
Applicant:
Epic Metals Corporation, Rankin, PA (US);
Inventors:
David F. Landis, Murrysville, PA (US);
Benjamin Landis, Export, PA (US);
Assignee:
Epic Metals Corporation, Rankin, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03D 3/06 (2006.01); F03D 3/00 (2006.01);
U.S. Cl.
CPC ...
F03D 3/065 (2013.01); F03D 3/005 (2013.01); F03D 3/061 (2013.01); F05B 2250/712 (2013.01);
Abstract
A blade for a vertical windmill includes an arcuate blade member having an interior surface and an exterior surface, the arcuate blade member including at least one aperture extending through the arcuate blade member; and at least one layer of flexible sheet material applied to the exterior or interior surface of the arcuate blade member, the at least one layer of flexible sheet material covering the at least one aperture in the arcuate blade member on the exterior or interior surface.