Control valve for working machines

Details Control valve for working machines Control valve for working machines

1978-07-18

1980-09-02

Geoghegan, Edgar W.

Motors: expansible chamber type

With motive fluid valve

Independent control of bypass between opposed working chambers

91451, 13759613, 60477, F15B 1108, F15B 1304

Patent

active

042200733

ABSTRACT:
A control valve adapted for use in working machines for hydraulically controlling the lifting movements of the working machine such as a rotary blade or plow connected to a power machine, said control valve comprising essentially a change-over valve for connecting or shutting off a cylinder port to or from a pump port or tank port by a spool operation, and a compensator for guiding cylinder port pressure into an oil chamber of a plunger on the spring loaded side for bypassing the pump discharge oil opposedly to the pump pressure, and characterized by provision of a passage for connecting the oil chamber of the compensator on said spring loaded side into the tank port or cylinder port through said change-over valve, whereby when said change-over valve is at its neutral or dropping position, said oil chamber is communicated with the tank port, and when said valve is at its elevating position, said oil chamber is communicated with the cylinder port.

REFERENCES:
patent: 3035610 (1962-05-01), Prunty

Affiliated with

Also associated with

Rating

Control valve for working machines does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1703869