Pneumatic actuator apparatus

Details Pneumatic actuator apparatus Pneumatic actuator apparatus

1986-09-17

1988-05-03

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

91459, 60413, F15B 1316

Patent

active

047412470

ABSTRACT:
The apparatus disclosed herein provides controlled operation of a pneumatic actuator by effecting charging and discharging of the actuator through an intermediate step volume, the pressure in the step volume being regulated as a respective function of the existing pressure in the actuator during charging and discharging.

REFERENCES:
patent: 3538814 (1970-11-01), Fisher
patent: 3795110 (1974-03-01), Kobelt
patent: 4077738 (1978-03-01), Keely et al.
patent: 4437385 (1984-03-01), Kramer et al.
patent: 4481451 (1984-11-01), Kautz et al.

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