Rotary expansible chamber devices – Weight balanced working member or partition
Patent
1987-08-07
1988-08-30
Vrablik, John J.
Rotary expansible chamber devices
Weight balanced working member or partition
418266, F01C 1344
Patent
active
047672951
ABSTRACT:
The invention provides a radial vane motor with springs for forcing the vanes radially outward from the rotor. The rotor is eccentrically mounted within a cylindrical cavity in the motor. The vanes extend radially outward from radial slots in the rotor and contact the inner wall of the cavity. Each vane has a spring and a push rod for biasing the vane radially outward against the cylinder wall. Each spring is disposed in a spring chamber positioned diametrically opposite one of the radial slots. Each push rod includes a flyweight disposed within the spring chamber. The spring acts on the flyweight to urge the push rod against the vane during start up and slow speed operation of the motor. When the rotor is rotating at normal speed, centrifugal force acts to urge the vanes radially outward and to deactivate the springs by forcing the flyweight radially opposite the vanes to compress the springs. Thus, the springs are protected from continual flexing by the vanes as the rotor rotates.
REFERENCES:
patent: 29473 (1860-08-01), Donovan
patent: 818399 (1906-04-01), Wright
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patent: 1006896 (1911-10-01), Augustine
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patent: 2240465 (1941-04-01), Sorge
patent: 3954358 (1976-05-01), Normandin
patent: 3964447 (1976-06-01), Normandin
patent: 4428195 (1984-01-01), Linder et al.
Dresser Industries Inc.
Vrablik John J.
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