Pumps – Motor driven – Fluid motor
Patent
1976-08-25
1978-06-06
Croyle, Carlton R.
Pumps
Motor driven
Fluid motor
181230, 181265, F04B 1700, F01N 306, F01N 108
Patent
active
040934063
ABSTRACT:
A fluid operated hydraulic pump of the type using air pressure to produce high pressure hydraulic fluid wherein an air pressure driven motor and a hydraulic pump are positioned in adjacent axially aligned relationship and the air motor includes a reciprocating piston which drives the hydraulic pump. The air motor includes an exhaust passage having an expansion chamber therein for receiving exhaust air flow and including a plurality of baffles therein, the expansion chamber and the baffles functioning in combination to reduce the noise generated by the air motor without the use of other muffling material thereby avoiding undue back pressure in the air motor and increasing the speed and efficiency and operation of the air motor and the pump.
REFERENCES:
patent: 1246196 (1917-11-01), Weisberg
patent: 1342464 (1920-06-01), Sawder et al.
patent: 1997298 (1935-04-01), Hathorn
patent: 2062141 (1936-11-01), Newman
patent: 2244060 (1941-06-01), Fuehrer
patent: 3041975 (1962-07-01), Atherton et al.
patent: 3197127 (1965-07-01), Valbjorn
patent: 3332504 (1967-07-01), Lowery
patent: 3788781 (1974-01-01), McClocklin
patent: 3802804 (1974-04-01), Zimmermann
Applied Power Inc.
Croyle Carlton R.
Nilles James E.
Ross Thomas I.
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