Patents by Inventor Jay B. Evans

Jay B. Evans 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).

  • Apparatus for measuring the inner surface of a culvert or other tunnel defining structure imbedded in the ground
    Patent number: 8384890
    Abstract: The inner surface of an underground tunnel defining structure, such as a culvert or pipe, is measured by apparatus including a portable hand held battery powered laser unit releasably attached to a rotor disk supported within the tunnel by an adjustable stand or tripod for rotation on a generally horizontal axis. The disk has peripherally spaced notches which receive a spring-biased latch member for positioning the disk and laser unit at predetermined angular positions about the axis. The laser unit emits a laser beam to a target on the inner surface of the structure and displays on the unit a precision distance reading from the laser unit to the target. The distance reading for each target is entered in a chart for comparison with a prior measurement reading to indicate changes in the shape or profile of the inner surface.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: February 26, 2013
    Assignee: CBC Engineers & Associates Ltd.
    Inventors: Alvin C. Banner, Eugene D. Highlander, David J. Hunt, Jay B. Evans
  • Apparatus for measuring the inner surface of a culver or other tunnel defining structure imbedded in the ground
    Publication number: 20110141464
    Abstract: The inner surface of an underground tunnel defining structure, such as a culvert or pipe, is measured by apparatus including a portable hand held battery powered laser unit releasably attached to a rotor disk supported within the tunnel by an adjustable stand or tripod for rotation on a generally horizontal axis. The disk has peripherally spaced notches which receive a spring-biased latch member for positioning the disk and laser unit at predetermined angular positions about the axis. The laser unit emits a laser beam to a target on the inner surface of the structure and displays on the unit a precision distance reading from the laser unit to the target. The distance reading for each target is entered in a chart for comparison with a prior measurement reading to indicate changes in the shape or profile of the inner surface.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 16, 2011
    Inventors: Alvin C. Banner, Eugene D. Highlander, David J. Hunt, Jay B. Evans