Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,...
Patent
1993-04-01
1994-05-03
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
285 15, 285269, 405 36, 405 52, 405303, E02D 2912, F16L 100
Patent
active
053081927
ABSTRACT:
Sewage manholes having a deteriorated or defective manhole housing which is subject to undesired ground water infiltration are rehabilitated by inserting annularly expandable tubular sleeve assemblies partially into each inflow and outflow pipe of the manhole, connecting the sleeve assemblies to one another via an annularly-closed tubular conduit or network of tubular conduits and then sealing the sleeve assemblies to the inflow and outflow pipes and to the tubular conduit or conduits to form a fluid flow path between the inflow and outflow pipes which is sealably enclosed against water infiltration and sewage exfiltration.
REFERENCES:
patent: 3850457 (1974-11-01), Bigotte et al.
patent: 4323526 (1982-04-01), Hilbush
patent: 4427112 (1984-01-01), Di Giovanni et al.
patent: 4538841 (1985-09-01), Royston
patent: 4639016 (1987-01-01), Rogers et al.
patent: 5002438 (1991-03-01), Strong
Strong Manufacturing Co., Inc. brochure "Inflow? A System for Manhole Restoration That Stops I&I, Restores Structural Integrity, Protects Against Corrosion . . . And Is Affordable!", Dec. 1990, pp. 1-4.
Monoform, Inc. outline consisting of 3 pages, undated.
Monoform, Inc. brochure "Manhole Liner Forming System", pp. 1-5, undated.
Monoform, Inc. information sheet entitled "Manhole Liner Forming System--Use `No Dig` Technology", undated.
C-Mar Northwest, Inc. brochure "C-Mar Manhole Reconstruction Processes--Utilizing `No Dig` and Non Disruptive Techniques", pp. 1-4, undated.
Taylor Dennis L.
Tru-Contour, Inc.
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