Title: Vertical axis fluid driven rotor

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.

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Inventors: Yengst, William C. (Solana Beach, CA, US)

Application Number: 490365
Filing Date: 1974-07-22
Publication_date: 1976-03-09
Assignee: Science Applications, Inc. (La Jolla, CA)
Primary Class(es): 416/132B 416/60, 416/119, 416/139, 416/145, 416/197A
Other Classes:
US Patent Ref:

1341045	May, 1920	Currey	416/119.
1646673	Oct, 1927	Wilson	416/197.
1697574	Jan, 1929	Savonius	416/132.
1766765	Jun, 1930	Savonius	416/132.
1824336	Sep, 1931	Michot-DuPont	416/53.
1952800	Mar, 1934	Havill	416/139.
1954811	Apr, 1934	Gunn	416/132.
3093194	Jun, 1963	Rusconi	416/119.

Other Refs: 103,819264,219

Jul, 1926	OE
, 1927	UK

Primary Examiner: Powell, Jr., Everette A.
Assistant Examiner:
Attorney: Verbeck; Bruno J.