Patents by Inventor Trevor Clifford Jones

Trevor Clifford Jones 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).

  • Pipeline pigs
    Patent number: 4057081
    Abstract: A magnetically detectable attachment for a pipeline pig comprises a wheel formed from two discs of magnetic material which serve as pole pieces for a permanent magnet mounted therebetween. The wheel is arranged, in use, to run along the top of the inside of the pipeline so as to magnetize a narrow longitudinal strip of the pipeline wall as the pig passes therealong.
    Type: Grant
    Filed: April 6, 1976
    Date of Patent: November 8, 1977
    Assignee: Underground Location Services Limited
    Inventor: Trevor Clifford Jones
  • Measuring devices for bores and ducts
    Patent number: 4000655
    Abstract: A pipeline pig for locating constrictions or irregularities on the inner surface of a pipeline consists of a fluid-filled envelope, such as a rubber or rubberlike spherical or toroidal ball, arranged to be a close fit within the pipeline, and means for sensing pressure variations within the envelope. The distance travelled along the pipeline by the pig may be measured by means of a contact wheel running on the pipeline surface and provided with a revolution counter.
    Type: Grant
    Filed: May 7, 1975
    Date of Patent: January 4, 1977
    Assignee: Underground Location Services Limited
    Inventor: Trevor Clifford Jones