Pumps – Condition responsive variable volumetric capacity expansible...
Patent
1996-04-08
1997-07-15
Thorpe, Timothy
Pumps
Condition responsive variable volumetric capacity expansible...
92605, F04B 4916
Patent
active
056477309
ABSTRACT:
In association with a straight-cylinder, reciprocating gas compressor, hydraulic circuitry and valving is provided to track movement of an intake valve which cooperates with an end of the compressor to define a clearance volume. The valving is selectively operative to cause the intake valve to reposition in more proximity to the end of the compressor, or more in proximity to its confronting discharge valve.
REFERENCES:
patent: 1621913 (1927-03-01), Longacre
patent: 1639439 (1927-07-01), Riesner
patent: 1985642 (1934-12-01), Moody
patent: 3198421 (1965-08-01), Alyea et al.
patent: 4775299 (1988-10-01), Overfield et al.
patent: 5049040 (1991-09-01), Diab et al.
Dresser-Rand Company
McAndrews Roland G.
Murphy Bernard J.
Thorpe Timothy
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