Grooved sealing member for sealing pipes and other underground structures and method of using
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United States of America Patent
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Oct 8, 2019
Grant Date -
Apr 11, 2019
app pub date -
Oct 9, 2017
filing date -
Oct 9, 2017
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An apparatus and method is provided for repairing an underground structure such as a pipe or manhole. The apparatus includes a liner assembly made of resin absorbent material. Some embodiments may further include a bladder assembly to help position the liner and press the liner against the walls of the underground structure. A sealing member is positioned in the underground structure. In some embodiments the sealing member is a separate member made from a compressible material, an absorbent material, or a hydrophilic or hydrophobic material. In other embodiments the sealing member is a portion of the liner assembly. The sealing member includes one or more channels adapted to receive a semi-liquid such as a hydrophilic or hydrophobic paste or grout. The semi-liquid is capable of swelling in response to being exposed to another liquid, such as water, and forms a seal between the liner assembly and the host pipe/manhole.
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