Apparatus for controlling an adjustable member

Details Apparatus for controlling an adjustable member Apparatus for controlling an adjustable member

1986-02-25

1987-07-07

Hershkovitz, Abraham

Motors: expansible chamber type

Working member position responsive motive fluid control

Position controls actuating fluid for valve

91410, 91461, F15B 1108

Patent

active

046778993

ABSTRACT:
A fluid operated positioning apparatus includes a multi-position valve operated in response to differential pressure in a fluid control circuit. The control circuit includes two adjustable throttles in series, the junction between the throttles being connected to a control device at one end of the valve. Particular relationships for the throttles are disclosed. Other embodiments include additional throttles for improved control with low pressures.

REFERENCES:
patent: 4510847 (1985-04-01), Mucheyer
patent: 4574687 (1986-03-01), Kauss

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