Cherne Industrial, Inc.

Cherne Industries Incorporated

Richard E Larson

Allen D Mathison

Dale K Nelson

The connector valve assembly is for insertion between a fluid inlet line assembly and an inflatable packer device having an externally disposed chemical dispensing assembly to pressure test and repair pipelines. The connector valve assembly is connectable to the fluid inlet line assembly which is comprised of a first chemical line, a second chemical line and a test media line and to the inflatable packer which has input connectors to receive the first and second chemical lines. The connector valve assembly has a first chemical conduit with an actuatable valve and connectors at opposite ends to transfer a first chemical component. A second chemical conduit with an actuatable valve and having connector means at opposite ends transfers a second chemical component. A valve actuating means is in communication with the second conduit at a location before its valve to simultaneously activate the valves of the first and second conduits. And, a test media conduit with a check valve to transfer a testing fluid is in communication with the second chemical conduit at a position beyond its actuatable valve. The connector assembly when inserted between the fluid inlet lines and the packer device, permits the chemical dispensing assembly of the packer device to test for pipeline leaks by dispensing a test media fluid and to seal pipeline breaks by simultaneously dispensing predetermined rates of two chemical components.

Connector valve assembly for inflatable packer device

A non-clogging check valve assembly useful in the simultaneous dispensing of individual components of a two-part grouting material. Two opposed flexible outlet nozzles mounted adjacent one another in a body member allow the components to be dispensed in a mixing relationship. The outlet nozzles are dome-shaped and contain slot-like apertures to allow the dispensing of the components under pressure and to prevent the clogging re-entry of the components into the valve which would otherwise result from back pressures developed as the components combine and react.

Dual outlet check valve assembly

An inflatable packer positionable in the interior of pipes for packing a sealant material into a void or joint in the pipe wall. Inflatable outer casings mounted on a support rim are utilized to seal off the area surrounding the void or joint. The support rim is constructed in sections which can be transported through a relatively small opening and utilized in a large diameter pipe. Sealant material injected into an open channel between the casings is forced into the void or joint by inflating an inner casing positioned between the outer casings. A flexible liner positioned between the sealant material and the inflatable casings prevents the sealant from adhering to the inflatable casings.

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Minnetonka, MN, United States of America

Richard E Larson