Roy Doug Anderson

US Patent:

48305448, May 16, 1989

Filed:

Jan 15, 1988

Appl. No.:

7/144125

Inventors:

Roy R. Anderson - Kennesaw GA

International Classification:

E21D 2002

US Classification:

405260

Abstract:

An apparatus for use in anchoring cables and tie-rods in a hole in the earth with grout comprises a tube having an inlet adjacent one tube end into which grout may be pumped under pressure. The tube has a first outlet from which grout may pass out of the tube and into the earth hole and a second outlet located between the first outlet and inlet. A flexible grout containment sleeve is mounted about the tube second outlet adapted to bellow outwardly when filled with grout under pressure and into sealing engagement with the walls of the earth hole. A pressure relief valve is mounted within the tube for restricting the flow of grout out of the tube first outlet until the sleeve has established sealing engagement with the earth hole walls.