Robert Anthony Potter

US Patent:

57719845, Jun 30, 1998

Filed:

May 19, 1995

Appl. No.:

8/445330

Inventors:

Robert M. Potter - Los Alamos NM
Jefferson W. Tester - Hingham MA

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

E21B 714
E21B 715

US Classification:

175 14

Abstract:

Various rock spallation devices and methods reduce the cost of deep hole excavation. A spallation head has rotating, circumferentially spaced jets. The jets may be combustion flame jets or very hot water. In a combustion embodiment, air and water are delivered to the spallation apparatus downhole in a mixture, and are separated. In a low density embodiment, the borehole is essentially empty. In a high density embodiment, more water is included in the mixture of air and water, and the borehole is filled with fluid. Instead of combustion, the kinetic energy of flowing water at the spallation device can be used to power a turbogenerator that generates electric energy to heat the water and spall the rock. The jets may also be aimed and configured to fuse the excavation material, if spallation is not feasible. New lengths of feed and return pipe can be added while spallation continues uninterrupted, either due to well head alternating equipment, or a downhole relative motion device.

US Patent:

44219822, Dec 20, 1983

Filed:

Jun 16, 1980

Appl. No.:

6/159890

Inventors:

Robert M. Potter - Los Alamos NM
Jacobo R. Archuleta - Espanola NM
Conrad F. Fink - Los Alamos NM

Assignee:

The United States of America as represented by the United States
Department of Energy - Washington DC

International Classification:

G01V 500

US Classification:

250260

Abstract:

The disclosure relates to downhole injection of radioactive. sup. 82 Br and monitoring its progress through fractured structure to determine the nature thereof. An ampule containing granular. sup. 82 Br is remotely crushed and water is repeatedly flushed through it to cleanse the instrument as well as inject the. sup. 82 Br into surrounding fractured strata. A sensor in a remote borehole reads progress of the radioactive material through fractured structure.

US Patent:

40313255, Jun 21, 1977

Filed:

Jun 21, 1976

Appl. No.:

5/698186

Inventors:

Ronald Michael Dudonis - Englishtown NJ
Charles Glenn Morrison - Holmdel NJ
Robert Lawrence Potter - Naperville IL
Kenneth Streisand - East Brunswick NJ

Assignee:

Bell Telephone Laboratories, Incorporated - Murray Hill NJ

International Classification:

H04M 1518

US Classification:

179 63R

Abstract:

This invention pertains to systems servicing coin operated telephones and, more specifically, to apparatus in such systems for preventing called party fraud in simulating coin deposit signals. During intermediate coin deposit periods, the network connection between the calling and called stations is split into calling and called portions and then these portions are extended and reconnected. A filter is inserted in the extended called station portion to attenuate fraudulent coin deposit signals originating from the called station. A coin tone detector connected to the extended calling station portion is still actuated by valid coin deposit signals from the calling station, but does not detect the attenuated fraudulent signals.