Cryogenic coupling

Details Cryogenic coupling Cryogenic coupling

1994-02-15

1994-11-15

Schwadron, Martin P.

Fluid handling

Systems

Flow path with serial valves and/or closures

137377, 285904, 62 507, F16L 3728

Patent

active

053638794

ABSTRACT:
The present invention is directed to a coupling assembly for dispensing cryogenic fluids, The coupling assembly includes an upstream terminus coupled to a source of cryogenic fluid and a downstream terminus connected to a container for receiving the cryogenic fluid. A poppet valve assembly is disposed at the upstream dispensing terminus. This poppet valve assembly is mechanically operated to be opened and closed. A second poppet valve assembly has a downstream terminus which is coupled to a receiving tank for the cryogenic fluid and an upstream terminus for coupling with the first poppet valve assembly. The second poppet valve assembly is opened and closed through overcoming the pressure of a spring by the pressure of the cryogenic fluid being transferred and the release of the cryogenic fluid pressure, A threaded wheel mounted on the first poppet valve assembly mates with a threaded portion on the second poppet valve assembly to connect and disconnect the two parts of the coupling.

REFERENCES:
patent: 3550624 (1970-12-01), Johnson
patent: 3842614 (1974-10-01), Karcher et al.
patent: 4676269 (1987-06-01), Sarson
patent: 4745948 (1988-05-01), Wilcox et al.
patent: 5255699 (1993-10-01), Herzan et al.

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