Pipes and tubular conduits – Repairing – Patches
Reexamination Certificate
2011-03-01
2011-03-01
Hook, James F (Department: 3754)
Pipes and tubular conduits
Repairing
Patches
C138S097000, C405S150100, C405S184200
Reexamination Certificate
active
07896032
ABSTRACT:
The present invention is a new liner assembly for use in pipes constructed from a flexible liner formed from a resin absorbent material. A compressible material, such as stitch-bond or foam, is attached to one or more sides of the liner for forming a taper along the compressible material when the liner is cured in place in the pipe using a curable resin and an expandable bladder to shape the liner to match the inside shape of the pipe. A taper is formed along the compressible material from the inside of the liner down to the inside of the pipe in which the liner is placed. As a result, a taper prevents accumulation of solid materials at the location of the pipe repair and thus prevents future clogging of the pipe at the repair.
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Hook James F
LMK Enterprises, Inc.
McKee, Voorshees & Sease, P.L.C.
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