Cutting by use of rotating axially moving tool – Means to drive tool – Universal or flexible drive connection to rotate tool
Patent
1975-10-16
1977-06-14
Simpson, Othell M.
Cutting by use of rotating axially moving tool
Means to drive tool
Universal or flexible drive connection to rotate tool
175 61, 408206, 408225, B23B 4702, B29D 2704
Patent
active
040294285
ABSTRACT:
Disclosed is a method and apparatus for repairing a buried main having connected lateral service conduits. In the method, a main is opened and cleaned of debris. Thereafter, an elongated conduit liner is axially inserted into a length of the buried main. The lateral service conduits are opened and cleaned from a point remote from their connection to the main. A dispenser is axially inserted through the service conduit to a point adjacent to the connection. At the connection, polyurethane material is dispensed into a portion of the service conduit and in the annular space between the main and the liner. Thereafter, the dispenser means is removed from the service conduit and the polyurethane material is allowed to set. A cutter apparatus is axially inserted into the service conduit and is manipulated to form a port through the polyurethane material and the wall of the liner to connect the service conduit to the liner. Thereafter, a sealer material may be applied to the exposed polyurethane in the area of the connection. In an alternative configuration, a conduit liner is axially inserted into the service conduit to abut the liner of the main. Thereafter, polyurethane sealant material is injected into the interior of the service conduit liner at a point adjacent to the liner of the main. The polyurethane material exits the service conduit liner through ports formed therein and fills the annular space between the service liner and the service conduit and the annular space between the liner of the main and the main. Thereafter, a cutter is axially inserted into the liner of the service conduit and is manipulated to form a port through the polyurethane in the service conduit liner and through the wall of the liner in the main to form a sealed connection.
REFERENCES:
patent: 2804895 (1957-09-01), Clement
patent: 3930545 (1976-01-01), Sears
St. Longe, H. S., "Updating Aging Sewers Without Trenching," In Engineering and Contract Record, July, 1974, pp. 40-44.
Bilinsky Z. R.
Nipak, Inc.
Simpson Othell M.
LandOfFree
Pipe repair apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pipe repair apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pipe repair apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-7481