Pneumatic control valve

Details Pneumatic control valve Pneumatic control valve

1988-08-15

1990-05-08

Michalsky, Gerald A.

Fluid handling

With casing, support, protector or static constructional...

Guards and shields

91387, 137 85, 251 28, G05B 1144

Patent

active

049229524

ABSTRACT:
A pneumatic control valve comprises a position controller and a valve which is influenced by the controller. A valve member can be lifted by means of a servomotor which is securely connected to the valve housing by means of a yoke, the servomotor being connected to the valve member by means of a valve rod. The lift position of the valve rod is sensed by means of a rotatable lever of the position controller, which rotatable lever is in a working connection with the valve rod by means of an articulated device. A housing encloses the valve rod, the lever and the articulated device.

REFERENCES:
patent: 2264262 (1941-11-01), Erbguth
patent: 2298112 (1942-10-01), Edwards
patent: 2331502 (1943-10-01), Ray
patent: 2399938 (1946-05-01), Pett
patent: 2536184 (1951-01-01), Johnson
patent: 2575085 (1951-11-01), Alyea
patent: 2811138 (1957-10-01), Clements
patent: 2942581 (1960-06-01), Gaffney
patent: 3087468 (1963-04-01), Roberts et al.
patent: 4343224 (1982-08-01), Kemmler
patent: 4509403 (1985-04-01), Gassman et al.

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