John Willie Harrell

US Patent:

57757526, Jul 7, 1998

Filed:

May 20, 1996

Appl. No.:

8/651995

Inventors:

George E. Niemirowski - South Lake TX
John M. Harrell - Waxahachie TX
Adam F. Niemirowski - Grapevine TX

International Classification:

B65D 2528

US Classification:

294 28

Abstract:

A device for holding a semiconductor wafer cassette to enable manipulation of the cassette during semiconductor manufacturing processes is disclosed. The device includes a shielding plate for enclosing an open face of a semiconductor wafer cassette. A pair of gripping arms are pivotally connected to edges of the shielding plate for grasping the edges of a semiconductor wafer cassette in response to actuation by a trigger and linkage contained within a handle of the device. The trigger actuates the gripping plates between an opened and closed position. When the cassette is gripped, it may be manipulated in the horizontal and vertical directions by an operator using the handle of the device.

US Patent:

40881547, May 9, 1978

Filed:

Jun 7, 1976

Appl. No.:

5/693680

Inventors:

Bobbie J. Patton - Dallas TX
John W. Harrell - Duncanville TX

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

F16L 5504

US Classification:

138 30

Abstract:

A desurging system is placed in the fluid flow line near the output of a fluid pump to remove pressure fluctuations created in the flowing fluid by action of the fluid pump. The fluid passes through a gas-loaded, diaphragm type, fluid desurger. A gas volume control unit automatically controls the gas volume in the desurger by controlling both the gas-charging and the gas-discharging operations in response to measurements of the gas volume in the desurger and the gas flow rate into and out of the desurger. A diaphragm protection control unit is responsive to a measurement of the differential pressure across the diaphragm of the desurger to automatically bleed off the gas pressure in the desurger any time that such pressure exceeds the strength limitations of the diaphragm.

US Patent:

43553788, Oct 19, 1982

Filed:

Dec 2, 1980

Appl. No.:

6/212063

Inventors:

Charles L. Dennis - Dallas TX
John W. Harrell - Duncanville TX

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

G01V 140

US Classification:

367 33

Abstract:

A logging tool recording system counts and converts depth pulses into a digital coded format. Such digital coded format is converted to a serial digital word for recording on an analog recorder. During playback the digital serial word is converted back into a digital coded format for reproduction by means of a visual digital display.

US Patent:

63251531, Dec 4, 2001

Filed:

Dec 22, 1999

Appl. No.:

9/469667

Inventors:

John Woodrow Harrell - Waxahachie TX

Assignee:

Halliburton Energy Services, Inc. - Dallas TX

International Classification:

E21B 3408

US Classification:

166386

Abstract:

A system and method for controlling production fluid flow from a chamber extending between a casing disposed in a downhole bore and tubing disposed in the casing. A plurality of valves are disposed in respective openings formed in the tubing, and a passage is formed in each valve for connecting the chamber and the tubing interior. The valves are selectively closed to prevent any fluid flow through the passage, and selectively opened to permit fluid flow from the chamber, through the passage, and into the interior of the tubing. Thus, the volume of fluid passing from the chamber, through the valve members, and to the interior of the tubing is controlled.

US Patent:

41347994, Jan 16, 1979

Filed:

Jul 18, 1977

Appl. No.:

5/816562

Inventors:

Wallace B. Allen - Dallas TX
John W. Harrell - Duncanville TX
William W. Webster - Arlington TX

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

G01N 2746

US Classification:

204 1T

Abstract:

A method for selecting a demulsifier for breaking a water-in-oil emulsion employs at least two electrodes to be immersed in a plurality of emulsion samples, each having a different demulsifier added. The current flow between the electrodes is recorded for each sample. The demulsifier producing the most rapid rate of change of current flow is identified as the most effective demulsifier in breaking the water-in-oil emulsion.

US Patent:

40017753, Jan 4, 1977

Filed:

Sep 23, 1974

Appl. No.:

5/508318

Inventors:

James H. Sexton - Duncanville TX
Bobbie J. Patton - Dallas TX
John W. Harrell - Duncanville TX

Assignee:

Mobil Oil Corporation - New York NY

International Classification:

G01V 140
H04L 702

US Classification:

340 18LD

Abstract:

In a system for logging while drilling, an uphole receiver demodulates a received acoustic signal to produce a synchronously rectified signal with a polarity representative of the phase state of the acoustic signal. A detector produces a bit value pulse indicative of the phase state of the acoustic signal over a bit time interval. Clock pulses produced by the receiver define the expected boundaries and midpoint of the bit time interval. An integrator integrates the synchronously rectified signal from the midpoint of one bit time interval to the midpoint of the next succeeding bit time interval. Any deviation from zero of the integrator's output over an interval of the acoustic signal including a phase state change is a bit phase error signal. The clock pulses are phase shifted to occur earlier or later in time in accordance with the polarity and magnitude of the bit phase error so as to be synchronized with the true boundaries and midpoint of the bit time interval.

US Patent:

60973102, Aug 1, 2000

Filed:

Jan 8, 1999

Appl. No.:

9/227785

Inventors:

John Harrell - Waxahachie TX
Andrew G. Brooks - Tomball TX
Hatem Salem Morsy - The Woodlands TX

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G01V 140

US Classification:

3408543

Abstract:

A mud pulse telemetry system uses a downhole pulser to produce sequences of positive and/or negative pulses according to a selected pattern. Positive pulses, negative pulses, and combinations thereof may be produced. A flow rate sensor at the surface measures changes in the flow rate at the top of the wellbore instead of or in addition to changes in the pressure. The flow rate changes are detectable even though the pressure pulses themselves may have a poor signal to noise ratio. This enables the invention to function effectively in underbalanced drilling wherein the use of light muds with a high gas content is required. One embodiment of the invention uses a conventional downhole pulser with the main valve closed and the pilot valve operating in a direct pulse mode.

US Patent:

58398708, Nov 24, 1998

Filed:

Mar 13, 1996

Appl. No.:

8/614868

Inventors:

George E. Niemirowski - South Lane TX
Adam F. Niemirowski - Grapevine TX
John M. Harrell - Waxahachie TX
P. V. Patel - South Lake TX

Assignee:

Novus Corporation - Carrollton TX

International Classification:

F27D 306

US Classification:

414150

Abstract:

An apparatus for preventing the cross contamination of heating element within horizontal furnaces is disclosed. A rotating spindle may connect to either or both of the lifting arm of a triaxial loader or the transfer plate of a loading station. A pair of spindles are able to lift a single wafer boat. Each spindle includes a plurality of active positions with one active position associated with each heating element of the horizontal furnace. A control processor monitors the position of the spindle and rotates the spindle to the active position associated with a heating element when a loading or unloading process is initiated for that heating element.