Automatic air balancer system

Details Automatic air balancer system Automatic air balancer system

1994-11-30

1996-01-09

Look, Edward K.

Motors: expansible chamber type

Working member position feedback to motive fluid control

Electrical input and feedback signal means

91314, 91366, 91415, 91459, F15B 1316, F15B 13044

Patent

active

054819598

ABSTRACT:
An automatic air balancer system capable of maintaining various kinds of load at a predetermined position and then moving the load at a desired speed, or applying a desired mechanical force to various kinds of object. The system includes a device for controlling the pressure at one end side of a balance cylinder to a desired level by a first pressure control valve and for controlling the pressure at the other end side of the balance cylinder to a predetermined level by a second pressure control valve, and a device for obtaining a balance pressure signal for the balance cylinder. Another signal is added to or subtracted from the balance pressure signal, and the resulting signal is input to the first pressure control valve.

REFERENCES:
patent: 4606257 (1986-08-01), Pfister
patent: 4628499 (1986-12-01), Hammett
patent: 4712470 (1987-12-01), Schmitz

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