Donald J Hill

US Patent:

58266534, Oct 27, 1998

Filed:

Aug 2, 1996

Appl. No.:

8/691602

Inventors:

Timothy M. Rynne - Long Beach CA
John F. Spadaro - Huntington Beach CA
Joe L. Iovenitti - Pleasant Hill CA
John P. Dering - Lakewood CA
Donald G. Hill - Walnut Creek CA

Assignee:

Scientific Applications & Research Associates, Inc. - Huntington Beach CA

International Classification:

B09C 100
E21B 4325
E21B 4330

US Classification:

166245

Abstract:

A method of enhancing the remediation of contaminated soils and ground water, production of oil and gas, and production of any solid, gas, and/or liquid from subsurface geologic and man-made formations including the steps of estimating the geometric boundaries of the region containing the material to be recovered, drilling a recovery well(s) into subsurface in a strategic location to recover the material of interest, establishing multiple sources of acoustical power in an array about and spaced-apart from the surface or at various depths below the surface in a borehole(s) and/or well(s), directing a volume of acoustical excitation from the sources into the region containing the material to be recovered, the excitation in the form of either controllable sinusoidal, square, pulsed, or various combinations of these three waveforms, and controlling the phasing, frequency, power, duration, and direction of these waveforms from the sources to increase and control the intensity of acoustical excitation in the region of the material to be recovered to enhance. the recovery of said material from the recovery well(s). The invention will augment any technology affecting the removal of materials from the subsurface.

US Patent:

43867960, Jun 7, 1983

Filed:

Jul 27, 1981

Appl. No.:

6/287357

Inventors:

Robert W. Lyall - Fountain Valley CA
Donald C. Hill - Pasadena CA

Assignee:

R. W. Lyall Co., Inc. - Santa Fe Springs CA

International Classification:

F16L 2100

US Classification:

285 31

Abstract:

There is disclosed a pipe repair coupling including a barrel formed centrally with a hollow cylinder for telescopical receipt therein of a hollow piston. The barrel is surrounded by a protective sleeve and is formed at one extremity with a first fitting and at the opposite extremity with a neck portion. The piston is formed in its exterior with a plurality of annular O-ring grooves which receive O-rings for dynamic sealing engagement with the interior wall of the barrel. Telescoped within the hollow piston in the area of the O-rings is a tubular stiffener which supports the walls of such piston against radial inward collapse. Consequently, the piston may be telescoped into the cylinder to facilitate connection of the cylinder fitting to an end of a pipe which is aligned axially with a second end spaced therefrom. Such second end may then be easily connected with a fitting formed on the end of the free end of such piston.