Pumps – Motor driven – Fluid motor
Patent
1992-12-29
1993-08-24
Bertsch, Richard A.
Pumps
Motor driven
Fluid motor
417404, F04B 3500
Patent
active
052383725
ABSTRACT:
A hydraulically powered gas compressor receives low pressure gas and outputs a high pressure gas. The housing of the compressor defines a cylinder with a center chamber having a cross-sectional area less than the cross-sectional area of a left end chamber and a right end chamber, and a spool-type piston assembly is movable within the cylinder and includes a left end closure, a right end closure, and a center body that are in sealing engagement with the respective cylinder walls as the piston reciprocates. First and second annular compression chambers are provided between the piston enclosures and center housing portion of the compressor, thereby minimizing the spacing between the core gas and a cooled surface of the compressor. Restricted flow passageways are provided in the piston closure members and a path is provided in the central body of the piston assembly, such that hydraulic fluid flows through the piston assembly to cool the piston assembly during its operation. The compressor of the present invention may be easily adapted for a particular application, and is capable of generating high gas pressures while maintaining both the compressed gas and the compressor components within acceptable temperature limits.
REFERENCES:
patent: 129631 (1872-07-01), Waring
patent: 2042673 (1936-06-01), Maniscalco
patent: 2152054 (1939-03-01), Johnson
patent: 2211029 (1940-08-01), Robinson
patent: 3256835 (1966-07-01), Kraus
patent: 4761118 (1988-08-01), Zanarini
patent: 4927335 (1990-05-01), Pensa
Barr Hardie R.
Basichas Alfred
Bertsch Richard A.
Fein Edward K.
Miller Guy M.
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