HYDRAULIC PUMPING CYLINDER AND METHOD OF PUMPING HYDRAULIC FLUID
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United States of America Patent
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app pub date -
Feb 11, 2014
filing date -
Mar 16, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A hydraulic jack includes a frame and a pump connected to the frame. The pump is connected to the frame. The pump includes a rod, a housing, and a piston, with hydraulic fluid being in the housing. The rod has a cross-sectional area and has a longitudinal axis. The housing has an end through which the rod slides and has an interior wall. The piston is coupled to the rod. The piston establishing a rod side chamber and a piston side chamber within the housing. The piston having a plurality of biased check valves fluidically coupling the rod side chamber with the piston side chamber.
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