Patents by Inventor Beverley Clarence Heggerud

Beverley Clarence Heggerud 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).

  • Method and apparatus for controlling the position and operation of equipment within a pipeline
    Patent number: 5651638
    Abstract: Equipment is positioned within a pipeline for providing many functions related to the construction and operation of the pipeline. A mandrel is positioned within a segment of pipe for bending the pipe segment for use in fabricating the pipeline. It is important that equipment used within a pipeline, in many applications, be positioned at a correct longitudinal location within the pipeline. A electromagnetic frequency communication system is used which includes a transmit antenna external to the pipeline and a receiving antenna mounted on the equipment within the pipeline. In a preferred embodiment, these antennas are oriented at right angles to each other, with one being parallel to the axis of the pipeline and the other being perpendicular to the axis of the pipeline. The external apparatus transmits a periodic sinusoidal pulse.
    Type: Grant
    Filed: September 1, 1995
    Date of Patent: July 29, 1997
    Assignee: CRC-Evans Pipeline International, Inc.
    Inventor: Beverley Clarence Heggerud