Pipes and tubular conduits – Repairing – Patches
Reexamination Certificate
2005-07-26
2005-07-26
Hook, James (Department: 3754)
Pipes and tubular conduits
Repairing
Patches
C138S109000, C138S141000, C138S155000
Reexamination Certificate
active
06920900
ABSTRACT:
A pipe section for lining sewer pipelines along with a system of such pipe sections and method of lining a sewer pipeline are provided. The pipe section has a first end portion having a spigot. A protective ring is mounted around the spigot for transferring a load to the pipe section for axially moving the pipe section within a sewer pipeline. A second end portion of the pipe section is designed for surrounding the spigot of an adjacent pipe. A seal is formed is formed around the spigot for sealing with the second end portion of the adjacent pipe section.
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Ameron International Corporation
Christie Parker & Hale LLP
Hook James
LandOfFree
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