Patents by Inventor Robert M. Langley

Robert M. Langley has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 7373802
    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.
    Type: Grant
    Filed: August 3, 2006
    Date of Patent: May 20, 2008
    Assignee: The State of Florida, Department of Transportation
    Inventors: Rodney G. Powers, Robert M. Langley
  • Publication number: 20080028825
    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.
    Type: Application
    Filed: August 3, 2006
    Publication date: February 7, 2008
    Inventors: Rodney G. Powers, Robert M. Langley
  • Patent number: 6964207
    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.
    Type: Grant
    Filed: March 29, 2004
    Date of Patent: November 15, 2005
    Assignee: The State of Florida, Department of Transportation
    Inventors: Rodney G. Powers, Robert M. Langley
  • Publication number: 20040177708
    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.
    Type: Application
    Filed: March 29, 2004
    Publication date: September 16, 2004
    Inventors: Rodney G. Powers, Robert M. Langley
  • Publication number: 20030110872
    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.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 19, 2003
    Inventors: Rodney G. Powers, Robert M. Langley