Fluid system having load pressure equalizing valve assemblies

Details Fluid system having load pressure equalizing valve assemblies Fluid system having load pressure equalizing valve assemblies

1977-06-06

1978-06-13

Geoghegan, Edgar W.

Motors: expansible chamber type

Differential

60484, F15B 1122

Patent

active

040942287

ABSTRACT:
A fluid system has first and second hydraulic jacks each having a load supporting end connected to a source of fluid through a control valve. First and second pilot operated valve assemblies are positioned between the control valve and the load supporting ends with each valve assembly having a first check valve positioned in a chamber and being movable between a first position at which communication between the associated load supporting end and the control valve is blocked and a second position at which the associated load supporting end is in fluid communication with the control valve. A second check valve is associated with the first check valve and is movable between a first position at which communication between the chamber and the control valve is blocked and a second position at which the chamber is in fluid communication with the control valve. A first piston is provided for urging the second check valve toward the first position and a second piston is provided for initially moving the second check valve to the second position and for subsequently moving the first check valve to the second position. A signal device senses the load pressure in the load supporting ends and delivers first and second control signals to the first piston of the respective first and second valve assemblies.

REFERENCES:
patent: 3198088 (1965-08-01), Johnson et al.
patent: 3411521 (1968-11-01), Johnson
patent: 3807175 (1974-04-01), Kubik
patent: 3906991 (1975-09-01), Haussler

Affiliated with

Also associated with

Rating

Fluid system having load pressure equalizing valve assemblies does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fluid system having load pressure equalizing valve assemblies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fluid system having load pressure equalizing valve assemblies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3250