ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,861, issued on March 18, was assigned to The Trout Group Inc. (Geneva, Ill.).
"Soil extraction/grouting device" was invented by Steven M. Trout (Geneva, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of moving an underground pipeline including the steps of: driving a casing into a soil proximate to the pipeline; deploying a pivoting wand from the casing about a pivoting axis, the pivoting wand having a plurality of cutting nozzles that are coupled to a fluid conduit having a longitudinal extent in the casing relative to a longitudinal axis; pressurizing the fluid conduit to thereby send fluid through the cutting nozzle to soften the s...