ALEXANDRIA, Va., March 17 -- United States Patent no. 12,577,079, issued on March 17, was assigned to StoneAge Inc. (Durango, Colo.).
"Dual endless belt flexible lance hose drive apparatus and system" was invented by Jeffery R. Barnes (Ignacio, Colo.), Cooper Hanley (Durango, Colo.), John L. Krauser (Durango, Colo.) and Daniel Szabo (Durango, Colo.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for driving a flexible lance hose into and out of tubes in a heat exchanger tube sheet includes a housing and an upper endless belt drive assembly and a lower endless belt drive assembly spaced apart by a gap for receiving a flexible lance hose therein. One of the drive assemblies is fixed to the housing....