Robert L Langley

US Patent:

6964207, Nov 15, 2005

Filed:

Mar 29, 2004

Appl. No.:

10/811744

Inventors:

Rodney G. Powers - Gainesville FL, US
Robert M. Langley - Hawthorne FL, US

Assignee:

The State of Florida, Department of Transportation - Tallahassee FL

International Classification:

G01B005/12

US Classification:

738658

Abstract:

A mechanical inspection sled which can be pushed through a pipeline using a series of connecting rigid rods. Mechanical measuring devices are mounted on the sled. These devices deflect when the pipe's internal diameter decreases. The deflection is visually observable by the user through a series of reflective indicators. The measuring devices are sufficiently pliable to allow the sled to pass beyond distorted areas and complete a full inspection of the pipeline. The measurement devices are adjustable to allow the sled to be used in many different pipe sizes. Because the device is purely mechanical, it is quite rugged and able to withstand harsh environments.

US Patent:

7373802, May 20, 2008

Filed:

Aug 3, 2006

Appl. No.:

11/498552

Inventors:

Rodney G. Powers - Gainesville FL, US
Robert M. Langley - Hawthorne FL, US

Assignee:

The State of Florida, Department of Transportation - Tallahassee FL

International Classification:

G01M 19/00

US Classification:

73 1209, 73 1204, 73 1206, 73 1211, 73 1212, 73 1213, 73 78

Abstract:

A method and testing fixture for toughness-testing corrugated high density polyethylene (HDPE) pipe. The method includes the steps of preparing a test sample, attaching the test sample in the testing fixture, and providing an impact load to the test sample. The test sample is cut from a section of corrugated HDPE pipe so as to have a clamped portion and a loading member extending outwardly therefrom. The clamped portion includes two sidewalls with a trough therebetween. A hole is bored in the loading member near the end of the loading member. The testing fixture includes a vertical clamp which is configured to grip the clamped portion of the test sample so as to retain the clamped portion in a stationary position when the test sample is loaded. The loading member of the test sample projects outwardly from the vertical clamp. A guide rod is attached to the loading member through the bore in the loading member.

US Patent:

20030110872, Jun 19, 2003

Filed:

Dec 19, 2001

Appl. No.:

10/021790

Inventors:

Rodney Powers - Gainesville FL, US
Robert Langley - Hawthorne FL, US

International Classification:

G01M019/00

US Classification:

073/865800

Abstract:

A mechanical inspection sled which can be pushed through a pipeline using a series of connecting rigid rods. Mechanical measuring devices are mounted on the sled. These devices deflect when the pipe's internal diameter decreases. The deflection is visually observable by the user through a series of reflective indicators. The measuring devices are sufficiently pliable to allow the sled to pass beyond distorted areas and complete a full inspection of the pipeline. The measurement devices are adjustable to allow the sled to be used in many different pipe sizes. Because the device is purely mechanical, it is quite rugged and able to withstand harsh environments.