Pump for pumping a fluid comprising a liquefied gas and apparatu

Details Pump for pumping a fluid comprising a liquefied gas and apparatu Pump for pumping a fluid comprising a liquefied gas and apparatu

1996-03-01

1999-01-19

Freay, Charles G.

Pumps

Expansible chamber type

Multiple cyclic outlet paths

417553, 417570, 417439, 417901, 62 506, F04B 2300, F04B 1508

Patent

active

058607986

ABSTRACT:
The pump has a sleeve-like bearer. This contains a bush in which a piston is displaceable along an axis. The bearer inner surface and the bush outer surface are adjacent to one another in parts and are separated from one another in parts by an intermediate space. The inlet of the pump is connected through an intake chamber located at least partly inside the bush and through the piston, via a non-return valve, to a pump chamber, which is connected via another non-return valve to a primary outlet of the pump. The intermediate space connects the inlet and the intake chamber to a secondary outlet which is a distance away, along the axis, from the inlet and the intake chamber. During the operation of the pump, fluid flows from the inlet through the intermediate space to the secondary outlet and cools the bush.

REFERENCES:
patent: 3446156 (1969-05-01), Lightfoot et al.
patent: 4239460 (1980-12-01), Golz
patent: 4396362 (1983-08-01), Thompson et al.
patent: 4576557 (1986-03-01), Pevzner
patent: 4915602 (1990-04-01), Tschopp

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