Vertical axis windmill

Details Vertical axis windmill Vertical axis windmill

1977-11-28

1980-04-08

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Sustained ancillary movement of rotary working member

Responsive to gravity or working fluid force

416140, F03D 306

Patent

active

041970551

ABSTRACT:
A vertical axis windmill involving a rotatable central vertical shaft having horizontal arms pivotally supporting three sails that are free to function in the wind like the main sail on a sail boat, and means for disabling the sails to allow the windmill to be stopped in a blowing wind.

REFERENCES:
patent: 177057 (1876-05-01), Bowles
patent: 226357 (1880-04-01), Saccone
patent: 272489 (1883-02-01), Sherwood
patent: 755497 (1904-03-01), Hyatt
patent: 955305 (1910-04-01), Bailey
patent: 1139103 (1915-05-01), Clade
patent: 1149875 (1915-08-01), Vansyoc
patent: 1535585 (1925-04-01), Dyer
patent: 2044794 (1936-06-01), Kisevalter
patent: 2085411 (1937-06-01), Biehn
patent: 2403564 (1946-07-01), Stein
patent: 2655604 (1953-10-01), Hutter
patent: 4130380 (1978-12-01), Kaiser

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