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:
Mar. 12, 2013
Filed:
Nov. 19, 2007
Christopher R. Sauer, Tampa, FL (US);
Patrick Mcginnis, Jenkintown, PA (US);
Igor Yatskar, Tarpon Springs, FL (US);
Millard S. Firebaugh, Annapolis, MD (US);
Christopher R. Sauer, Tampa, FL (US);
Patrick McGinnis, Jenkintown, PA (US);
Igor Yatskar, Tarpon Springs, FL (US);
Millard S. Firebaugh, Annapolis, MD (US);
Ocean Renewable Power Company, LLC, Portland, ME (US);
Abstract
A turbine includes a plurality of blades that rotate in a single direction when exposed to fluid flow, wherein the plurality of blades are joined to the central shaft by a plurality of radial spokes disposed substantially perpendicular to the central shaft such that the rotating plurality of blades causes the shaft to rotate. The plurality of blades has a uniform airfoil-shaped cross section, where the airfoil cross section presents a non-zero angle of attack to the current. The plurality of blades wind in a spiral trajectory, rotating around the central shaft and having a variable radius along the length of the central shaft such that a distance measured from the plurality of blades to the center shaft is greater near the center of the turbine than at either end.