Darrell Jay Davis

US Patent:

8633713, Jan 21, 2014

Filed:

Apr 11, 2011

Appl. No.:

13/084035

Inventors:

Russell Langley - Adair OK, US
James A. Huggins - Watts OK, US
John D. Carter - Catoosa OK, US
David Paulley - Milton Keynes, GB
Keith R. Roberts - Manford OK, US
Darrell L. Davis - Broken Arrow OK, US
Michael E. O'Neill - Tulsa OK, US
Steve D. Hayes - Tulsa OK, US
Dale G. Davis - Beggs OK, US
John D. Lindemann - Broken Arrow OK, US

Assignee:

CRTS, Inc. - Tulsa OK

International Classification:

G01R 27/26

US Classification:

324663, 324600, 324667, 738658

Abstract:

There is provided herein a robot-based electrical system for locating holidays within coated pipe that does not utilize a grounding wire. In a preferred arrangement, the robot will carry a metal rotating brush/capacitive pad combination and changes in the capacitance in the brush/pad circuit will be used to identify imperfections in the interior coating of the pipe and especially those located proximate a girth weld. In another preferred embodiment, a circumferential brush will be used that allows testing of the integrity of the internal coating throughout the length of the pipe as the robot travels the pipeline.

US Patent:

20130014598, Jan 17, 2013

Filed:

Jul 14, 2011

Appl. No.:

13/183237

Inventors:

Russell Langley - Adair OK, US
James A. Huggins - Watts OK, US
John D. Carter - Catoosa OK, US
David Paulley - Milton Keynes, GB
Keith R. Roberts - Manford OK, US
Darrell L. Davis - Broken Arrow OK, US
Michael E. O'Neill - Tulsa OK, US
Steve D. Hayes - Tulsa OK, US
Dale G. Davis - Beggs OK, US
John D. Lindemann - Broken Arrow OK, US

International Classification:

G01N 33/00

US Classification:

738658, 901 1, 901 44

Abstract:

There is provided herein an electrical robotic system for locating, cleaning, and repairing holidays within coated pipe that are proximate to a girth weld. In a preferred arrangement, a robotic train will be placed in the pipeline that will perform the functions of holiday location, cleaning/preparation of the surface containing the holiday, and repair thereof, in a single run through the pipeline.

US Patent:

20180202944, Jul 19, 2018

Filed:

Jan 19, 2018

Appl. No.:

15/875466

Inventors:

- Chesterfield MO, US
Darrell Davis - Broken Arrow OK, US
Stephen Sears - Broken Arrow OK, US
Kirk Schmitz - Tulsa OK, US
Udaykiran Rokkam - Broken Arrow OK, US

Assignee:

Aegion Coating Services, LLC - Chesterfield MO

International Classification:

G01N 21/954
G01B 11/24
B05D 7/22
B05D 3/00

Abstract:

A system for inspecting an interior surface of a girth weld region of a pipeline includes a robot that includes a scanner mounted on a carriage for scanning the interior surface of the girth weld region to generate surface profile data. A profile analyzer receives the surface profile data and outputs an indication of whether the interior surface of the girth weld region is suitable for being coated. In some embodiments, an imaging system captures images of the girth weld region as it is being scanned. In a method of coating the girth weld regions of a pipeline, the images of a girth weld region found to be unsuitable for being coated based on the scanning data are used to certify whether the girth weld region is suitable for being coated.