James Langford

4086973, May 2, 1978

Dec 3, 1976

5/747446

Wilbur S. Keller - Arlington TX
James Wilson Langford - Red Oak TX

Dresser Industries, Inc. - Dallas TX

E21B 908

175374

An asymmetric insert has a formation contacting crest thereby decreasing the loading on the insert and increasing the lifetime of the cutter. The insert has a shape prior to assembly in the cutter that includes a base integrally joined to an asymmetric head. The base is mounted in a socket in the cutter body. The head projects from the surface of the cutter and includes a crest positioned to contact the formations with substantially its entire length.

5755299, May 26, 1998

Dec 27, 1995

8/579454

James W. Langford - Red Oak TX
Robert Delwiche - Brussels, BE

Dresser Industries, Inc. - Dallas TX

E21B 1046
B34D 302

175375

Hardfacing to protect wear surfaces of drill bits and other downhole tools having coated diamond particles dispersed within and bonded to a metallic matrix deposit. The coating on the diamond particles may be formed from materials and alloys such as particles, tungsten carbide, and tungsten carbide/cobalt and cermets such as metal carbides and metal nitrides. The coated diamond particles are preferably sintered and have a generally spherical shape. The coated diamond particles are premixed with selected materials such that welding and cooling will form both a metallurgical bond and a mechanical bond within the solidified metallic matrix deposit. A welding rod is prepared by placing a mixture of coated diamond particles, hard particles such as tungsten carbide/cobalt, and loose filler material into a steel tube. A substrate is hardfaced by progressively melting the welding rod onto a selected surface of the substrate and allowing the melted material to solidify, forming the desired hardfacing with coated diamond particles dispersed therein on the substrate surface.

8353369, Jan 15, 2013

Aug 5, 2009

12/536424

Allan W. Rainey - Mansfield TX, US
James W. Langford - Granbury TX, US

Atlas Copco Secoroc, LLC - Grand Prairie TX

E21B 10/36
E21B 10/42

175415, 175296

A method of boring through a formation includes providing a drilling machine and drill string and operatively coupling an earth bit to the drilling machine through the drill string. An air flow is provided through the drill string at an air pressure less than about one-hundred pounds per square inch (100 psi) and an overstrike force is applied to the earth bit, wherein the overstrike force is less than about five foot-pounds per square inch (5 ft-lb/in).

4722405, Feb 2, 1988

Oct 1, 1986

6/914205

James W. Langford - Red Oak TX

Dresser Industries, Inc. - Dallas TX

E21B 1052

175374

A composite sintered rock bit insert for use in a rolling cutter is fabricated from two tungsten carbide components. The first component is formed of a tungsten carbide composite that is less wear resistant, but tougher, than the second component. The two components are joined at a parting plane which extends to an earth-engaging surface of the insert. The insert is mounted on a rolling cutter such that the component having the lower wear resistant properties is on the leading face of the insert. With this combination, the wear pattern of the insert maintains a crest-like configuration at its rock engaging surface.

4256351, Mar 17, 1981

Nov 24, 1978

5/963630

James W. Langford - Red Oak TX

Dresser Industries, Inc. - Dallas TX

F16C 3372

308 82

A sealing system acts as a barrier to the drilling fluid, pulverized cuttings and other materials in the borehole preventing the materials from entering the bearing area of an earth boring bit and retains lubricant inside the bearing area. At least one bearing pin extends from the body of an earth boring bit and a rolling cone cutter is mounted on the bearing pin. A seal assembly is located in the mouth of the cutter between the cutter and the bearing pin. The seal assembly includes an annular rigid ring, an elastomeric ring and a deformable ring means mounted to rotate with said rolling cone cutter. The elastomeric ring is attached to the annular rigid ring. The elastomeric ring has a lip with a wiping surface that contacts the bearing pin. The deformable ring means is connected to the lip and maintains contact between the wiping surface and the bearing pin.

8627903, Jan 14, 2014

Dec 10, 2012

13/709962

Allan W. Rainey - Mansfield TX, US
James W. Langford - Granbury TX, US

Atlas Copco Secoroc, LLC - Grand Prairie TX

E21B 10/36
E21B 10/42

175415, 175296

A method of boring through a formation includes providing a drilling machine and drill string and operatively coupling an earth bit to the drilling machine through the drill string. An air flow is provided through the drill string at an air pressure less than about one-hundred pounds per square inch (100 psi) and an overstrike force is applied to the earth bit, wherein the overstrike force is less than about five foot-pounds per square inch (5 ft-lb/in).

5886690, Mar 23, 1999

Oct 31, 1996

8/744709

Russell L. Pond - Euless TX
James K. Langford - North Richland Hills TX

Uniden America Corporation - Fort Worth TX

G06F 300

345327

A program schedule user interface for use in television applications, such as cable or satellite broadcast programming. The interface allows for display of program scheduled information in full screen or minimized mode and provides additional useful configurations of the program schedule information.

5620290, Apr 15, 1997

Aug 23, 1995

8/518252

Kent Homfeldt - Elgin IL
Barth Leatherman - St. Charles IL
James Langford - Port Washington WI

Illinois Tool Works Inc. - Glenview IL

F16B 3924
H01R 426

411533

A snap-on ground retainer for a fastener of the type having a shank, the shank having a head at one end and a threaded portion along its length. The ground retainer comprises a relatively thin sheet metal and includes a washer-like member having an external annular body portion and an inner tooth portion, the inner tooth portion comprises a plurality of circumferentially spaced teeth extending radially inwardly from an inner margin of the washer-like member. The plurality of circumferentially spaced teeth comprise a plurality of resilient retaining teeth and a plurality of rigid grounding teeth, an inner diameter defined by the rigid grounding teeth is slightly larger than a maximum diameter of the threaded portion on the fastener and an inner diameter defined by the resilient retaining teeth is slightly smaller than a maximum diameter of the threaded portion on the fastener with which the ground retainer is adapted to be telescopically associated. The resilient retaining teeth are deflectable for permitting passage of the ground retainer over the threaded portion onto the fastener to seat on the shank and are rigid enough to prevent the ground retainer from being easily detached from the fastener, wherein the ground retainer is attached to the fastener after the threaded portion of the fastener has been inserted through an apertured plate member thereby preventing dislodgment of the fastener from the plate member. The rigid grounding teeth are twisted to enable them to engage with an adjacent upper surface and an adjacent lower surface when the fastener is tightly secured to the lower surface thereby creating and maintaining an electrical connection between the upper and lower surfaces.