Crane swing control

Details Crane swing control Crane swing control

F - Mech Eng,Light,Heat,Weapons

15

B

138/63

F15B 11/00 (2006.01) F04B 49/00 (2006.01)

Patent

CA 1154353

CRANE SWING CONTROL ABSTRACT OF THE DISCLOSURE: A control for a variable dis- placement pressure compensated pump in which pressurized control fluid regulates the setting of a sequence valve to set the maximum output pressure of the pump and also set the displacement of the pump. The sequence valve is a two-stage device which utilizes a sequence poppet stage and cone stage. When working fluid pressure exceeds the setting of the sequence valve, the cone stage spills to reduce the displacement of the pump. If the pressure is not reduced fast enough the sequence poppet spills to more rapidly reduce the displacement of the pump.

375024

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