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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 apparatu

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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What is claimed is: 1. A quick disconnect coupler, operatively interconnected with a cryogenic fluid transfer apparatus, said coupler comprising in combination: a. a generally cylindrical coupler body having a through bore and a front cylindrical portion with a first cavity open on one end, separat

What is claimed is: 1. A quick disconnect coupler, operatively interconnected with a cryogenic fluid transfer apparatus, said coupler comprising in combination: a. a generally cylindrical coupler body having a through bore and a front cylindrical portion with a first cavity open on one end, separated from a rear portion with a second cavity open on another end, via an apertured intermediate wall portion perpendicular on a first side facing said first cavity and including a tapered wall portion on a second side facing said second cavity; b. said first cavity having an inner peripheral surface surrounding an outer peripheral surface of a laterally severed tubular bushing, with the condition of being severed permitting a predetermined amount of radial expansion and contraction of said bushing; c. a generally tubular adaptor having a second through bore and a cylindrical rear portion, operatively attached to said cryogenic fluid transfer apparatus, a cylindrical, apertured, intermediate portion including a valve guide, located in said through bore, and a cylindrical front portion sealingly, operatively, connected with to said coupler body rear portion; d. an annular interface seal, spaced from said coupler body intermediate wall portion, said spacing of said seal permitting a limited amount of axial movement of said tubular bushing; e. a valve, normally biased to a closed position, interposed between said valve guide and said coupler body tapered wall portion, with a valve head portion shutting said apertured intermediate wall portion in the closed position thereof; and f. a generally tubular coupling sleeve having a frusto-conical front inlet portion separated from a cylindrical outlet portion via an annular end face adjoining said front inlet portion, said coupling sleeve being operatively secured to said coupler body front portion, with said annular end face physically abutting said first cavity. 2. The quick disconnect coupler of claim 1, wherein said severed tubular bushing is comprised of a polymeric composition material. 3. The quick disconnect coupler of claim 2, wherein said polymer composition material is comprised of a PTFE composition material. 4. The quick disconnect coupler of claim 2, wherein said polymer composition material is comprised of a PTFE equivalent material composition. 5. The quick disconnect coupler of claim 1, wherein said tubular bushing is severed from one peripheral edge to the other peripheral edge in a diagonal manner. 6. The quick disconnect coupler of claim 1, wherein said tubular bushing is scarf-cut. 7. The quick disconnect coupler of claim 1, wherein the outside diameter of said tubular bushing is radially spaced, a predetermined distance, from the inner peripheral surface of said first cavity, so as to permit a predetermined amount of radial movement therebetween. 8. The quick disconnect coupler of claim 1, wherein said frusto-conical front inlet portion of said coupling sleeve further includes a radial aperture. 9. The quick disconnect coupler of claim 8, wherein said aperture is operatively connected with one end of a vent fitting, with another end of said fitting being in an operative connection with a cryogenic fluid storage tank of a cryogenic device associated with said cryogenic fluid transfer apparatus. 10. The quick disconnect coupler of claim 9, wherein said operative connection with said cryogenic fluid storage tank includes a flow control valve. 11. The quick disconnect coupler of claim 10, wherein said flow control valve is associated with said cryogenic fluid storage tank. 12. The quick disconnect coupler of claim 9, wherein said operative connection with said cryogenic fluid storage tank is at a position in said tank that is filled with a gaseous fluid. 13. The quick disconnect coupler of claim 9, wherein said operative connection of said coupling sleeve front inlet portion with said cryogenic fluid storage tank of said cryogenic device permits the purging of said inlet portion by utilizing said cryogenic device's own gaseous fluid as the purge mechanism, in the form of a moisture remover, during said cryogenic liquid fluid transfer operation. 14. The quick disconnect coupler of claim 1, further including a male nipple assembly releasably joined with said coupler via an operative interconnection. 15. The quick disconnect coupler and male nipple assembly of claim 14, wherein said operative interconnection includes, in said nipple assembly, an inner end portion adapted to be inserted into said coupler via said coupler sleeve inlet portion and making a sealing contact with the inner peripheral surface of said annular interface seal, said severed tubular bushing, via said limited amounts of axial and radial movements, aiding in the prevention of icing, at said sealing contact, during said cryogenic liquid fluid transfer operation. 16. The quick disconnect coupler and male nipple assembly of claim 14, wherein said coupling front inlet portion further includes a radial aperture, said aperture being operatively interconnected with one end of a vent fitting, with another end of said vent fitting, in turn, being in an operative interconnection with a cryogenic fluid storage vessel of a cryogenic device associated with said cryogenic fluid transfer apparatus. 17. The quick disconnect coupler and male nipple assembly of claim 16, wherein said operative interconnection of said coupling sleeve inlet portion with said cryogenic fluid storage vessel permits the purging of said inlet portion and the adjacent nipple inner end portion by utilizing said cryogenic device's own gaseous fluid as the purging medium, in the form of moisture removal, during said cryogenic liquid fluid transfer operation. 18. The quick disconnect coupler and male nipple assembly of claim 14, wherein said operative interconnection further includes, in the outer peripheral surface of one of said coupling sleeve, at least one radially outwardly-directed, cylindrical, pin, said at least one pin being adapted to releasably mate, in a twisting motion, with one of at least one bayonet slot, formed in a cup member concentric and connected with said nipple assembly inner end portion. 19. The quick disconnect coupler and male nipple assembly of claim 14, wherein said operative interconnection with said cryogenic fluid storage vessel is at a position in said vessel that is filled with the gaseous phase of the cryogenic liquid fluid therein. 20. A quick disconnect coupler, operatively interconnected with a cryogenic fluid transfer apparatus, said coupler comprising in combination: a. a generally cylindrical coupler body having a through bore and a front cylindrical portion with a first cavity open on one end, separated from a rear portion with a second cavity open at another end, via an apertured intermediate wall portion perpendicular on a first side facing said first cavity and including a tapered wall portion on a second side facing said second cavity; b. said first cavity surrounding an outer peripheral surface of a tubular bushing; c. an annular interface seal, located at one axial end of said bushing, permitting a limited amount of axial movement of said bushing; d. a generally tubular adaptor having a second through bore and a cylindrical rear portion, operatively attached to said cryogenic fluid transfer apparatus, a cylindrical, apertured, intermediate portion including a valve guide, located in said through bore, and a cylindrical front portion sealingly, operatively, connected to said body rear portion; e. a valve, normally biased to a closed position, interposed between said valve guide and said coupler body tapered wall portion, with a valve head portion shutting said apertured intermediate wall portion in said closed position; f. a generally tubular coupling sleeve having a frusto-conical front inlet portion separated from a cylindrical outlet portion via an annular end face adjoining said front inlet portion, said coupling sleeve being operatively secured to said coupler body front portion, with said annular end face physically abutting said first cavity; and g. a vent fitting having one end thereof connected with said radial aperture and another end thereof being in an operative connection with a cryogenic fluid storage vessel associated with said cryogenic fluid transfer apparatus, wherein said operative connection permits purging of said inlet portion by utilizing said cryogenic vessel's own gaseous phase as a purging medium, for moisture removal, during said transfer operation. 21. The quick disconnect coupler of claim 20, wherein said operative connection between said coupler and said cryogenic fluid storage vessel includes a flow control valve. 22. The quick disconnect coupler of claim 21, wherein said flow control valve is associated with said cryogenic fluid storage vessel. 23. The quick disconnect coupler of claim 20, wherein said operative connection with said cryogenic fluid storage vessel is at a position in said vessel that is filled with a gaseous phase of said cryogenic fluid. 24. The quick disconnect coupler of claim 20, further including a male nipple assembly releasably joined with said coupler via a further operative interconnection. 25. The quick disconnect coupler of claim 24, wherein said further operative connection includes, in said nipple assembly, an inner end portion adapted to be inserted into said coupler via said coupler sleeve inlet portion and making a sealing contact with the inner peripheral surface of said annular interface seal. 26. The quick disconnect coupler of claim 25, wherein said further operative interconnection permits the purging of said inlet portion and the adjacent nipple inner end portion. 27. The quick disconnect coupler of claim 24, wherein said tubular bushing is severed from one peripheral edge to the other peripheral edge in other than a direct lateral cut. 28. The quick disconnect coupling of claim 27, wherein said tubular bushing is scarf-cut, said cut aiding in the prevention of icing at a sealing contact between the inner peripheral surface of said annular interface seal and said adjoining male nipple portion. 29. The quick disconnect coupling of claim 27, wherein said scarf-cut tubular bushing is comprised of a polymeric material of one of a PTFE composition and a PTFE equivalent composition. 30. The quick disconnect coupling of claim 27, wherein the outside diameter of said severed tubular bushing is radially spaced, a predetermined distance, from the inner peripheral surface of coupler body first cavity, so as to permit a predetermined amount of radial movement therebetween.