US Patent Issued to The Tunneling on Nov. 4 for "Method and apparatus for trenchless extraction of pipe" (Canadian Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,746, issued on Nov. 4, was assigned to The Tunneling Co. Inc. (Alberta, Canada).

"Method and apparatus for trenchless extraction of pipe" was invented by Shawn Gaunt (Kamloops, Canada) and Elliott Brown (Kamloops, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "Apparatus for trenchless extraction of pipe includes a housing rigidly connectable to a pipe to be extracted, a tension helmet disposed over an end of the housing, the tension helmet connected by tensile elements to a hydraulic impact hammer supported by the housing, and resilient shock absorber disposed between the tension helmet and the housing. The hammer is operated to impact a strik...