Automatic pressure relief system for a hydraulic motor

Details Automatic pressure relief system for a hydraulic motor Automatic pressure relief system for a hydraulic motor

F - Mech Eng,Light,Heat,Weapons

15

B

214/46, 138/80,

F15B 13/042 (2006.01) A01G 23/00 (2006.01) F15B 13/01 (2006.01) F16K 15/00 (2006.01)

Patent

CA 2029008

ABSTRACT OF THE DISCLOSURE A check valve assembly having first and second check valves and an unseating spool is positioned between a control valve and a rotary motor. The unseating spool is elongated so that it continually contacts the valve elements of the check valves. The check valve hydraulically coupled to the higher pressure supply/return line drives the unseating spool against the valve element of the other check valve opening it and connecting the associated supply/return line having lower hydraulic pressure to reservoir through the direction control valve.

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