Coaxial quick disconnect coupling

Details Coaxial quick disconnect coupling Coaxial quick disconnect coupling

2006-12-12

2006-12-12

Lee, Kevin (Department: 3753)

Fluid handling

Systems

Flow path with serial valves and/or closures

C137S614030

Reexamination Certificate

active

07147003

ABSTRACT:
A quick disconnect coupler apparatus fluidly connecting coaxially aligned first and second couplings (50, 130), wherein the both couplings (50, 130) have an inner high pressure passage (26) and a coaxial outer lower pressure passage (53). Initially the first coupling inner high pressure passage (26) is fluidly connected with the first outer lower pressure passage (53) while isolating the second coupling inner high pressure passage (166) and the coaxial outer lower pressure passage (151). Then the first coupling inner high pressure passage (26) and one of the second coupling inner and outer passages (166, 151) is fluidly connected with the first coupling coaxial outer lower pressure passage (53) while isolating the other of the second coupling inner and outer passages (166, 151). Finally the first coupling inner high pressure passage (26) is fluidly connected with the second coupling inner high pressure passage (166) and the first coupling coaxial outer lower pressure passage (53) is fluidly connected with the second coupling coaxial outer lower pressure passage (151).

REFERENCES:
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patent: 3820827 (1974-06-01), Boelkins
patent: 5014743 (1991-05-01), Makishima
patent: 6158717 (2000-12-01), Van Scyoc et al.
patent: 6170522 (2001-01-01), Tanida
patent: 6179001 (2001-01-01), Schutz
patent: 6192934 (2001-02-01), Coates et al.
patent: 6659130 (2003-12-01), Arosio
patent: WO 82/03439 (1982-10-01), None

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