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. 10, 2012
Filed:
Dec. 11, 2008
Applicants:
Karl J. Douglass, Dublin, PA (US);
Francis J. Mccabe, Dublin, PA (US);
Robert Dickie, Dublin, PA (US);
Inventors:
Karl J. Douglass, Dublin, PA (US);
Francis J. McCabe, Dublin, PA (US);
Robert Dickie, Dublin, PA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03D 7/00 (2006.01); F03D 7/06 (2006.01); F03D 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vertical wind turbine includes a blade which has opposite force producing sides that lie on opposite sides of the longitudinal axis along its direction of travel. The aerodynamic surfaces are driven by the wind through four phases of rotation. Driving torque is produced during three of the four phases. The blade includes a v-shaped nosepiece with rearward facing surfaces on each side that cup the wind during three of the four phases. The split tail of the blade captures the wind during a down wind phase of rotation.