Motors: expansible chamber type – Differential – Opposing pressure applied by bypassing
Patent
1977-10-11
1981-03-31
Maslousky, Paul E.
Motors: expansible chamber type
Differential
Opposing pressure applied by bypassing
91422, 91468, 92110, F15B 1517, F15B 13042
Patent
active
042586097
ABSTRACT:
Liquid fluid pressure applied to a piston causes advancement thereof at a rapid rate until an external resisting load applied to the piston rod exceeds a predetermined value producing a corresponding increase in the pressure within the opposing pressure chambers to which the piston is exposed. Bi-directional flow, conducted between the opposing chambers during rapid piston movement, is automatically blocked by a differential circuit pressure operated piston valve to cause a rapid increase in the differential pressures acting on the piston, and an increase in the value of the external piston rod load with a corresponding decrease in its rate of movement in the same direction. A modified embodiment permits the piston rod to act under pressure and with a force in both the extending and retracting phases of the stroke with the same rapid extending rate until the external resisting force is encountered.
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Maslousky Paul E.
Weil Benjamin G.
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