Fluid handling – Systems – Flow path with serial valves and/or closures
Patent
1978-03-08
1980-08-26
Nilson, Robert G.
Fluid handling
Systems
Flow path with serial valves and/or closures
13761404, 2511496, F16L 3728
Patent
active
042190487
ABSTRACT:
A coupling device has two connectable and disconnectable units. A first unit is provided with a centrally arranged body and an inner casing slidingly arranged between two positions. In a first position, the inner casing cooperates with the central body to keep closed a passage for a fluid medium through the first unit. A second unit has a front section interactable with the inner casing in order to force the casing to a second position against the force of a spring which urges the casing towards the body. In the second position of the casing, the passage for the fluid medium is opened. The second unit also has a valve which closes a passage for the fluid medium when the units are in the disconnected position and opens said passage when the units are in the connected position.
REFERENCES:
patent: 2951713 (1960-09-01), Hoffstrom
patent: 3039794 (1962-06-01), DeCenzo
patent: 3285283 (1966-11-01), Calvin
patent: 4086939 (1978-05-01), Wilcox
Ekman Engineering AG
Nilson Robert G.
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