Fluid handling – Systems – Flow path with serial valves and/or closures
Reexamination Certificate
2005-07-21
2008-12-30
Lee, Kevin L (Department: 3753)
Fluid handling
Systems
Flow path with serial valves and/or closures
C137S614030, C251S149600, C062S050700, C285S904000
Reexamination Certificate
active
07469718
ABSTRACT:
A generally cylindrical quick disconnect female cryogenic coupler, interconnected with a cryogenic fluid transfer apparatus, includes a coupler body with a first cavity housing a laterally severed tubular bushing, an adaptor having one end attached to the coupler body and another end to the apparatus, a normally closed-biased valve between the coupler body and the adaptor, a coupling sleeve, attached to the coupler body having, a frusto-conical inlet portion, and a vent fitting having one end connected with a coupling sleeve radial aperture and another end in operative connection with a cryogenic fluid storage vessel, associated with the noted apparatus, to permit the inlet purging by using the vessel's own gaseous phase as a purging medium during liquid fluid transfer operation. The severed bushing inhibits ice formation, at an inlet/male nipple interface during the noted transfer. A method for purging moisture at the noted interface is also set forth.
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Calvo Mario Alejandro
Ellis Shawn David
Lambert Todd Dennis
Lee Kevin L
Parker-Hannifin Corporation
Pophal Joseph J.
Whitman Daniel J.
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