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. 09, 1976
Filed:
Jul. 22, 1974
Applicant:
Inventor:
William C Yengst, Solana Beach, CA (US);
Assignee:
Science Applications, Inc., La Jolla, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F03D / ;
U.S. Cl.
CPC ...
4161 / ; 416119 ; 416139 ;
Abstract
A vertical axis wind-driven rotor which combines effective utilization of the energy in a strong wind with maintenance of effective torque at low wind speeds. In one embodiment, the rotor has a reservoir of liquid located near its base. A plurality of tubes radiate outwardly from the reservoir along the base, then rise upwardly along the outer edges of the rotor vanes. In another embodiment, a Savonius type rotor is modified so that the vanes are hinged, and the trailing edge of each vane weighted, whereby in a wind the rotor starts in a fully open condition and automatically feathers itself at high wind speeds.