Hydraulic pump with variable-stroke piston and generator using said pump
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United States of America Patent
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Jul 24, 1984
Grant Date -
N/A
app pub date -
Mar 19, 1982
filing date -
Mar 23, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a double-acting hydraulic pump comprising a piston moving with a reciprocal rectilinear movement inside a cylinder of which each chamber is provided with a suction valve and a delivery valve, the rod of said piston being adapted to be driven by a variable-displacement driving member. The said piston rod extends beyond the piston and moves, outside the cylinder within a space of variable volume, provided in the body of the pump, which communicates, with a member controlling the by-pass device through which the two chambers of the cylinder communicate.
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