ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,454, issued on Feb. 3, was assigned to PLG Technologies Inc. (Bakersfield, Calif.).
"System for determination of line and level for trenchless construction" was invented by Aaron Orndorff (Bakersfield, Calif.) and Brian Sherrell (Bakersfield, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A line and level determination system for a trenchless construction apparatus has a block assembly which is attached by welding to a lead casing to be installed with the trenchless construction apparatus. The block assembly has a water inlet, a water outlet, a tilt sensor and a light emitting device disposed within the water outlet. A water hose has a first e...