Patents by Inventor Harold C. Cox

Harold C. Cox 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 applying seal coating to asphalt pavement
    Patent number: 4688964
    Abstract: A coal-tar emulsion seal coat is applied atop, spread, and pressed into an asphalt pavement by a continuous rolling technique whereby liquid sealant is carried by and released from a delivery tank extending between the sides of a frame onto the asphalt surface. A first and second set of rollers extending between the frame sides spread and smooth an even pattern of sealant, then a third, smaller, lighter roller provides a finishing and touch-up operation.
    Type: Grant
    Filed: June 26, 1986
    Date of Patent: August 25, 1987
    Inventor: Harold C. Cox