Chip tolerant flapper

Details Chip tolerant flapper Chip tolerant flapper

1986-10-30

1990-07-03

Cohan, Alan

Fluid handling

Pressure modulating relays or followers

13762562, 13762564, G05D 1600

Patent

active

049382497

ABSTRACT:
A reverse-flow fluid control system utilizes a pair of rivet-shaped flappers mounted on a motor driven lever to apportion fluid between a pair of nozzles. Each flapper is slideably mounted upon the lever to allow the lever to move relative to and independently of the flapper should a chip become lodged between a flapper and a nozzle as the lever moves towards that nozzle.

REFERENCES:
patent: 2883995 (1954-09-01), Bialous et al.
patent: 3134425 (1961-02-01), Oppenheimer et al.
patent: 3297044 (1967-01-01), Thorburn
patent: 3446229 (1966-05-01), Howland
patent: 3771543 (1973-11-01), Wiggins
patent: 3874405 (1975-04-01), Thayer
patent: 3894552 (1975-07-01), Bowditch
patent: 4131130 (1978-12-01), Ruby
"Applications Case History", Gas Turbine Fuel Controls, Hydraulic Servocontrols Corporation, (undated).

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