Electro-pneumatic valve positioning device

Details Electro-pneumatic valve positioning device Electro-pneumatic valve positioning device

1994-12-29

1996-08-06

Nguyen, Hoang

Motors: expansible chamber type

Working member position feedback to motive fluid control

Valve locking means

91387, 91410, 137 85, F15B 1316

Patent

active

055423370

ABSTRACT:
A device capable of comparing the travel position of an output shaft of a diaphragm actuator or cylinder with the current level of an electronic input signal and further being capable of manipulating the pressure of a separate air signal piped to a diaphragm actuator or cylinder in order to correct any imbalance between such a shaft position and a given electronic signal level, including the ability of varying its dynamic response through built in adjustments.

REFERENCES:
patent: 3293992 (1966-12-01), Baumann
patent: 3721422 (1973-03-01), Bader
patent: 4366670 (1983-01-01), Kitamura
patent: 4585030 (1986-04-01), Fox
patent: 4628793 (1986-12-01), Roth
patent: 4722360 (1988-02-01), Odajima et al.
patent: 4862788 (1989-09-01), Baumann

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