Patents by Inventor Richard D. Turnbow

Richard D. Turnbow 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: 5492431
    Abstract: An apparatus and method for simultaneously cutting parallel slots in a pavement surface is provided, especially for dowel bar retrofit load transfer restoration at joints. The apparatus includes a movable frame lockable with a brake, plurality of parallel cutting blades rotatably mounted on twin cutting heads on the frame, vertical travel unit for raising and lowering the blades independently or in unison, and horizontal travel units for moving the blades horizontally. One of the twin cutting heads is mounted on each side of the frame, with hydraulic adjusting rams for independently setting the width therebetween. A slurry control system which is mounted on the frame provides the blades with coolant and vacuums up the slurry produced during cutting.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: February 20, 1996
    Assignee: Concrete Textures, Inc.
    Inventors: James E. Rasmussen, Larry Mosher, James K. Godwin, Larry Swanda, Robert W. Given, Jerry Maynard, Thomas Sidler, Ronald E. Stewart, Richard D. Turnbow