Patents by Inventor LeRoy E. Shaw

LeRoy E. Shaw 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: 5216862
    Abstract: Slip and non-slip dowel placement sleeves are disclosed. The slip dowel placement sleeve generally comprises a tubular dowel receiving sheath having a closed distal end and open proximal end. A connecting means is formed around or inserted into the proximal opening of the sheath to facilitate attachment of the sheath to a concrete form. Smooth sections of dowel rod may then be advanced through holes drilled in the concrete form and into the interior compartment of the sheath. Concrete is poured within the form and the dowel rod remains slidably disposed within the interior of the sheath. Variations of the basic slip dowel placement sleeve of the invention include a tapered "extractable" sleeve and a corrugated "grout tube" for placement of non-slip dowel or rebar.
    Type: Grant
    Filed: February 15, 1991
    Date of Patent: June 8, 1993
    Inventors: Ronald D. Shaw, Lee A. Shaw, Leroy E. Shaw
  • Patent number: 5212919
    Abstract: A screed post assembly which may be easily and quickly interfaced to a Nelson stud extending upwardly from a horizontal support beam used in the construction of a building framework. The screed post serves as a support for a screed support system which is used to conduct a leveling operation for a concrete pour during the formation of a composite deck.
    Type: Grant
    Filed: May 11, 1992
    Date of Patent: May 25, 1993
    Inventors: Lee A. Shaw, Ronald D. Shaw, Thomas W. Enis, Scott G. Shaw, Leroy E. Shaw
  • Patent number: 4748788
    Abstract: An improved surface seeded exposed aggregate concrete and method of use is disclosed characterized by use of small, rounded aggregate, preferably sand, being broadcast over the upper surface of the concrete. The broadcast aggregate is mixed into the cement paste derived from the concrete matrix by magnesium hand floats and finished by hand sponging. A surface retarder and vapor barrier is than applied to cover the concrete surface for approximately four to twenty four hours. Subsequently, any surface film is washed from the surface of the concrete and the concrete is cured by fogging or soaker hose. Approximately thirty days later, the surface residue is removed from the concrete with a stem/acid wash providing an exposed aggregate concrete having extreme flatness and high wear resistance suitable for high traffic areas and improved asthetics resembling stone, granite or marble.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: June 7, 1988
    Inventors: Ronald D. Shaw, Lee A. Shaw, LeRoy E. Shaw