Richard Duane Hanson

US Patent:

57918252, Aug 11, 1998

Filed:

Oct 4, 1996

Appl. No.:

8/725447

Inventors:

Bradley M. Gardner - Idaho Falls ID
Ann M. Smith - Pocatello ID
Richard W. Hanson - Spokane WA
Richard T. Hodges - Deer Park WA

Assignee:

Lockheed Martin Idaho Technologies Company - Idaho Falls ID

International Classification:

E02D 312
E02D 518
E02F 506

US Classification:

405267

Abstract:

An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably on which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground and injection means for inserting barrier-forming material into the void. In one embodiment, the digging means is a continuous cutting chain. Mounted on the continuous cutting chain are cutter teeth for cutting through soil and discharge paddles for removing the loosened soil. This invention includes a barrier placement machine, a method for building an underground horizontal containment barrier using the barrier placement machine, and the underground containment system. Preferably the underground containment barrier goes underneath and around the site to be contained in a bathtub-type containment.

US Patent:

57884226, Aug 4, 1998

Filed:

Oct 4, 1996

Appl. No.:

8/725448

Inventors:

Bradley M. Gardner - Idaho Falls ID
Ann Marie Smith - Pocatello ID
Richard W. Hanson - Spokane WA
Richard T. Hodges - Deer Park WA

Assignee:

Lockheed Martin Idaho Technologies Company - Idaho Falls ID

International Classification:

E02D 312
E02D 518
E02F 506

US Classification:

405267

Abstract:

An apparatus for building a horizontal underground barrier by cutting through soil and depositing a slurry, preferably one which cures into a hardened material. The apparatus includes a digging means for cutting and removing soil to create a void under the surface of the ground, a shield means for maintaining the void, and injection means for inserting barrier-forming material into the void. In one embodiment, the digging means is a continuous cutting chain. Mounted on the continuous cutting chain are cutter teeth for cutting through soil and discharge paddles for removing the loosened soil. This invention includes a barrier placement machine, a method for building an underground horizontal containment barrier using the barrier placement machine, and the underground containment system. Preferably the underground containment barrier goes underneath and around the site to be contained in a bathtub-type containment.

US Patent:

43245390, Apr 13, 1982

Filed:

May 3, 1979

Appl. No.:

6/035554

Inventors:

Richard W. Hanson - Spokane WA

Assignee:

R. A. Hanson Co., Inc. - Spokane WA

International Classification:

B28C 716

US Classification:

425 59

Abstract:

A concrete pressure monitoring device in an apparatus for continuously forming an elongated monolithic concrete structure within a prepared excavation. The device includes a pressure sensitive membrane exposed to wet concrete between a bottom surface of the excavation and an inner form member of the apparatus. The membrane covers an open end of a fluid filled housing so that variations in concrete pressure adjacent the membrane will flex the membrane to cause displacement of fluid within the housing. A remote indicator responsive to displacement of fluid within the housing is operatively connected to the housing to indicate the concrete pressure variations.