F - Mech Eng,Light,Heat,Weapons – 01 – B
Patent
F - Mech Eng,Light,Heat,Weapons
01
B
138/63, 103/67
F01B 3/04 (2006.01) F04B 1/12 (2006.01) F04B 1/16 (2006.01) F04B 1/20 (2006.01) F04B 1/22 (2006.01) F04B 1/30 (2006.01)
Patent
CA 1056263
ABSTRACT OF THE DISCLOSURE A variable delivery hydraulic equipment is designed to be operated as a pump or a motor and includes a cylinder block having a plurality of cylinder bores on the same circumference thereof and a plurality of plunger assemblies each disposed within the cylinder bore. The plunger assembly has a pair of plungers oppositely disposed within the cylinder bore so as to define a chamber therebetween and slidable movable within the cylinder bore. A pair of cams are disposed in contact with opposite plungers with the cylinder block disposed therebetween. The cams each have a cam surface for imparting a plurality of reciprocatory movements in one cycle to the opposite plunger in manner that the moving velocities of the opposite plungers are different form each other in all phase position. The cam surfaces are formed to have sine curves each having two crests and a different stroke. In consequence, the volume of the chamber between the opposite plungers is always varied. The hydraulic equipment can perform a plurality of discharge and suction operation in one cycle without any pulsating movement. It is therefore possible to obtain a small-sized hydraulic equipment also capable of effecting a high speed operation.
247766
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