Pumps – Expansible chamber type – Plural pumping chambers
Patent
1989-11-08
1991-05-14
Nilson, Robert G.
Pumps
Expansible chamber type
Plural pumping chambers
F04B 2108
Patent
active
050151584
ABSTRACT:
The compressor is formed of a simple, straight cylinder clamped between end headers by means of tie bolts. Confined within the cylinder are inlet valves--one at each end thereof--and inlet ports formed in the cylinder open onto these valves. A reciprocable piston rod carries a pair of spaced-apart discharge valves thereon. The latter valves, having annular bodies, have piston ring grooves formed thereabout, to receive sealing piston rings therein; too the discharge valves serve as the gas compressing pistons.
REFERENCES:
patent: 213692 (1899-03-01), Richmond
patent: 1602193 (1926-10-01), Garber
patent: 2295592 (1942-09-01), McConnohie
Dresser-Rand Company
Murphy Bernard J.
Nilson Robert G.
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