Pumps – Motor driven – Fluid motor
Patent
1980-04-21
1982-10-12
Ostrager, Allen M.
Pumps
Motor driven
Fluid motor
417392, 417400, 60517, F04B 1700, F02G 104
Patent
active
043536832
ABSTRACT:
A Stirling cycle engine is provided with a variable volume displacer piston for displacing a working fluid alternately between the hot and cold ends of the engine. The drive shaft for the displacer piston is hollow and communicates with the interior variable volume of the displacer piston. As the displacer piston volume increases it draws a fluid being pumped into the system through a check valve. As the volume of the displacer piston decreases the fluid being pumped is ejected under pressure through another check valve. Movement of the displacer piston is accomplished by mechanical or fluid programming and the power for driving the displacer piston may be derived from the fluid being pumped.
REFERENCES:
patent: 3415442 (1968-12-01), Stoddard et al.
patent: 3788772 (1974-01-01), Noble et al.
patent: 3986360 (1976-10-01), Hagen et al.
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