Vacuum regulating valve

Details Vacuum regulating valve Vacuum regulating valve

2006-10-10

2006-10-10

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

C137S554000, C251S063500, C251S285000

Reexamination Certificate

active

07117886

ABSTRACT:
A vacuum regulating valve has high controllability, wherein the opening of a valving member can be quickly and accurately controlled by using a small and inexpensive electric motor. In accordance with a signal indicative of a pressure set value and a pressure signal from the pressure sensor, the main controller in the valve control section outputs a signal for setting the opening of the valving member to a motor controller that controls the electric motor, and performs control to cause a pilot fluid to be supplied to a pressure receiving chamber of the piston, thereby causing the piston to move to the position of abutment with the stopper.

REFERENCES:
patent: 6581635 (2003-06-01), Furutate et al.
patent: 08-178126 (1996-07-01), None
patent: 2003156171 (2003-05-01), None
patent: 2005-76829 (2005-03-01), None

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