Pipe joints or couplings – Having plural independent paths – For concentric tubes or pipes
Reexamination Certificate
2008-09-23
2008-09-23
Hewitt, James M (Department: 3679)
Pipe joints or couplings
Having plural independent paths
For concentric tubes or pipes
C285S123100, C285S123160, C285S123170
Reexamination Certificate
active
11450866
ABSTRACT:
A double walled assembly including a primary assembly and a secondary containment assembly. The secondary containment assembly has a second hose casing, a second fixed containment casing and a second releasable coupler assembly mounted on the second hose casing and including a longitudinally shiftable sleeve part. The sleeve part has a first longitudinal position where it can be sealingly coupled to the second fixed containment casing and a second longitudinal position where it is spaced from the second fixed containment casing and exposes the primary assembly. Non-threaded interfaces on the sleeve part and the second fixed containment casing can be sealingly coupled when the sleeve is in its first longitudinal position. The sleeve part may be slidingly or threadingly mounted on a shank that is sealingly coupled to the second hose casing.
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Botkin & Hall LLP
Hewitt James M
Ripley Jay R
LandOfFree
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