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:
Jun. 03, 2008
Filed:
May. 26, 2005
Robert A. Vanderhye, McLean, VA (US);
Robert A. Vanderhye, McLean, VA (US);
Other;
Abstract
A vertical axis wind turbine assembly, such as a Savonius, typically mounted on a watercraft, utilizes a number of different shroud configurations to substantially preclude rotation when docked. Collapsible 'curtains' mounted above the wind engaging elements, pre-defined shape or inflatable bladder inserts for convex volumes of the turbine rotor, pull over sheet material covers for the convex volumes, and a wrap-around flexible sheet, each may be utilized as shrouds. A human or wind powered boat is provided with an adjustable pitch propeller which includes cams mounted on propeller blades and movable by an operator-controlled sleeve to the desired position for a positive or negative pitch. The wind turbine may comprise rotor stages of different hand, rotating in opposite directions, and having substantially concentric shafts operatively connected to oppositely rotating propellers, for driving the boat forward.