LEWIS FELDMAN
Engineers in Norristown, PA
License number
Pennsylvania PE034996E
Category
Engineers
Type
Professional Engineer
Address
Address
Norristown, PA 19406
Professional information
Vertical Axis Sail Bladed Wind Turbine
US Patent:
5171127, Dec 15, 1992
Filed:
Mar 3, 1992
Appl. No.:
7/845244
Inventors:
Lewis Feldman - King of Prussia PA
Michael Concannon - Halifax, CA
Michael Concannon - Halifax, CA
International Classification:
F03D 300
US Classification:
416119
Abstract:
A vertical axis turbine is provided which comprises a plurality of flexible sail blades attached to a vertically extending, rotatable shaft by upper and lower blade attachment devices, and a power absorbing load device coupled to the rotatable shaft. The flexible sail blades are deployed and stabilized in operation by the centrifugal forces produced in response to rotation of the blades about the vertical axis of the shaft, whereby, in operation, aerodynamic forces acting on the sail blades can be transmitted to shaft without generating bending movements. The sail blades comprise plural elongate flexible sail panels, with flyweights being disposed between and secured to the ends of pairs of the sail panels. In different embodiments, passive flyweights, active flyweights (secondary turbines) and combinations of both types are used.
Vertical Axis Sail Bladed Wind Turbine
US Patent:
5183386, Feb 2, 1993
Filed:
May 30, 1989
Appl. No.:
7/358423
Inventors:
Lewis Feldman - King of Prussia PA
Michael Concannon - Nova Scotia, CA
Michael Concannon - Nova Scotia, CA
International Classification:
F03D 300
US Classification:
416119
Abstract:
A vertical axis turbine is provided which comprises a plurality of flexible sail blades attached to a vertically extending, rotatable shaft by upper and lower blade attachment devices, and a power absorbing load device coupled to the rotatable shaft. The flexible sail blades are deployed and stabilized in operation by the centrifugal forces produced in response to rotation of the blades about the vertical axis of the shaft, whereby, in operation, aerodynamic forces acting on the sail blades can be transmitted to shaft without generating bending movements. The sail blades comprise plural elongate flexible sail panels, with flyweights being disposed between and secured to the ends of pairs of the sail panels. In different embodiments, passive flyweights, active flyweights (secondary turbines) and combinations of both types are used.