Pumps – Successive stages – Stages driven by relatively movable motor working members
Patent
1989-10-31
1991-06-04
Hepperle, Stephen M.
Pumps
Successive stages
Stages driven by relatively movable motor working members
91180, 91310, 417347, F04B 2500
Patent
active
050209744
ABSTRACT:
A fluid compressor includes a plurality of compression stages each operated sequentially by drive means comprising a pneumatically operated drive piston operating in a drive cylinder. Several embodiments are described and illustrated having different forms of control means and drive and sequencing means for the drive pistons.
REFERENCES:
patent: 2479856 (1949-08-01), Mitton
patent: 2911005 (1959-11-01), Adelson
patent: 2954155 (1960-09-01), Ray et al.
patent: 2984257 (1961-05-01), McCormick et al.
patent: 3760843 (1973-09-01), Larner
patent: 4714411 (1987-12-01), Searle
Hepperle Stephen M.
Normalair-Garrett (Holdings) Limited
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