Fluent material handling – with receiver or receiver coacting mea – Filling means with receiver or receiver coacting means – Drip prevention
Reexamination Certificate
2006-03-21
2006-03-21
Douglas, Steven O. (Department: 3751)
Fluent material handling, with receiver or receiver coacting mea
Filling means with receiver or receiver coacting means
Drip prevention
C141S086000, C138S114000, C062S050700
Reexamination Certificate
active
07013935
ABSTRACT:
A fail safe secondary containment system for a cryogenic liquid transport pipeline spool having a mainline liquid transport pipe and a secondary containment pipe which overlies the mainline liquid transport pipe and is affixed to the outer surface of the mainline liquid transport pipe to form a sealed annular containment space therebetween, has a cap mounted on the secondary containment pipe to provide a sealed tertiary space. A first check valve has an inlet connected to the secondary containment space for receiving fluid therefrom and an outlet connected to the tertiary containment space and a second check valve has an inlet connected to the tertiary containment space for receiving fluid therefrom and an outlet connected to the inside of the mainline liquid transport pipe.
REFERENCES:
patent: 5622212 (1997-04-01), Berger et al.
patent: 6094922 (2000-08-01), Ziegler
patent: 6647733 (2003-11-01), Cooper
Baker, Jr. Thomas S.
Douglas Steven O.
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