Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner
Patent
1980-05-02
1981-12-01
Powell, Jr., Everette A.
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Upstream of runner
416163, 98 72, 416186A, F01D 700
Patent
active
043033750
ABSTRACT:
In a rotary ventilator having a vertical shaft rotatably supporting a rain plate, a vertically movable ring, diametrically equal with the rain plate, surrounds the depending end portion of the shaft. A plurality of elongated vanes, vertically disposed in circumferentially spaced relation extend between the rain plate and movable ring and are supported for angular rotation about their vertical axes by the peripheral edge portion of the rain plate. The depending end portion of each vane is provided with a depending tab given a quarter twist about its vertical axis which projects through a cooperating slot formed in the peripheral edge portion of the movable ring. A lever, pivotally connected with the depending end portion of the shaft for vertical movement of its respective ends, lifts the movable ring toward the rain plate and imparts a partial angular rotation to the respective vanes, about their respective axis, from a normal open position to a ventilator closed overlapping position.
REFERENCES:
patent: 1341045 (1920-05-01), Currey
patent: 2253406 (1941-08-01), Wagner
patent: 2383004 (1945-08-01), Mader
patent: 2469096 (1949-05-01), Wilson
patent: 3938907 (1976-02-01), Magoveny et al.
patent: 4020565 (1977-05-01), Steffen
patent: 4123001 (1978-10-01), Kolt
Arden Terry D.
Foglesong Robert M.
Powell Jr. Everette A.
Rhea Robert K.
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