Power plants – Pressure fluid source and motor – Pulsator
Patent
1979-04-23
1981-02-03
Maslousky, Paul E.
Power plants
Pressure fluid source and motor
Pulsator
60534, 60581, 92 78, 92 86, 92152, 177209, F01B 700, F15B 2104, F01B 3112
Patent
active
042480469
ABSTRACT:
A vent accumulator for a hydraulic integrator of the type having at least three pistons arranged in end-to-end relationship within an elongated housing. Each piston is adapted to move under hydraulic pressure in a direction away from one longitudinal end of the housing towards the opposite longitudinal end. Each of the pistons, except for the last piston adjacent the opposite end of the housing, is provided with a piston rod operatively connected to the piston next adjacent towards one end of the housing. Each piston is defined as having a first side directed towards one end of the housing and a second side directed towards the opposite end of the housing. Each of the pistons, except for the last two pistons in line, is provided with means for receiving hydraulic fluid under pressure from a load cell on its first side and an air vent communicates on it second side. The next-to-last piston, adjacent the opposite end of the housing, has means for receiving hydraulic fluid under pressure on its firstside, with the other side of the next-to-last piston being mechanically connected to the last piston. The last piston exerts its pressure on a body of hydraulic fluid which is located on its second side, whereby the pressure on this body of fluid represents the total of the pressures exerted on the remaining pistons by the load cells which are connected thereto. An air vent communicates with the last piston on its first side. The improvement over the prior art is the vent accumulator which is formed by an elongated cylindrical hollow closed chamber and a conduit connecting each of the air vents of the hydraulic integrator to the vent accumulator.
REFERENCES:
patent: 1031528 (1912-07-01), Cole
patent: 2093141 (1937-09-01), Sonsalla
patent: 2125483 (1938-08-01), Blanchord
patent: 2981234 (1961-04-01), Appleton
patent: 3430539 (1969-03-01), Freeman
patent: 3601011 (1971-08-01), Arnes
Dorman William S.
Maslousky Paul E.
Unit Rig & Equipment Co.
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