Hydraulic control valve unit

Details Hydraulic control valve unit Hydraulic control valve unit

1980-04-17

1982-07-20

Chambers, A. Michael

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

137529, 251 30, 251 43, 91452, F16K 3700, F16K 1518

Patent

active

043400868

ABSTRACT:
A self-monitoring hydraulic control valve unit has a main valve and a control valve for controlling supply of hydraulic fluid to a control duct of the main valve. A differential piston is connected in the control duct and has a longitudinal bore which forms part of the control duct, the piston acting at its smaller diameter end on the shutter of the main valve. An electrical monitoring switch such as a proximity switch monitors the position of the differential piston and, therefore, of the main valve.

REFERENCES:
patent: 2639693 (1953-05-01), Miller et al.
patent: 2737197 (1956-03-01), Joseph
patent: 3411416 (1968-11-01), Herd et al.
patent: 3428063 (1969-02-01), Plotkin et al.
patent: 3433131 (1969-03-01), Soylund et al.
patent: 3688794 (1972-09-01), Beril et al.
patent: 4198030 (1980-04-01), Jackson et al.
patent: 4226166 (1980-10-01), Frank

Affiliated with

Also associated with

Rating

Hydraulic control valve unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic control valve unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic control valve unit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-246069