Patents by Inventor Jeffery A. Irwin

Jeffery A. Irwin 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: 7387466
    Abstract: A tamper for imparting patterns through a die to a pliable surface, most commonly a newly poured concrete structure such as a walkway, is disclosed. In the tamper of this invention its base, including the integrated handle-receiving neck, is formed substantial entirely of an elastomeric material with a defined hardness, thus reducing or eliminating the severe physical shocks which are caused when a tamper strikes a die or a concrete surface at an off-line angle. The elastomer material must have a Durometer hardness in range of 50-95, preferably 70-95 and more preferably 85-95 as measured on the Shore A hardness scale. Numerous elastomers are suitable for use; polyurethane polymers are preferred. A single type of elastomer may be used for the entire base or two or more elastomers may be conjoined and assembled to form the base.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: June 17, 2008
    Assignees: Proline Concrete Tools Inc
    Inventor: Jeffery A. Irwin
  • Publication number: 20070041787
    Abstract: A tamper for imparting patterns through a die to a pliable surface, most commonly a newly poured concrete structure such as a walkway, is disclosed. In the tamper of this invention its base, including the integrated handle-receiving neck, is formed substantial entirely of an elastomeric material with a defined hardness, thus reducing or eliminating the severe physical shocks which are caused when a tamper strikes a die or a concrete surface at an off-line angle. The elastomer material must have a Durometer hardness in range of 50-95, preferably 70-95 and more preferably 85-95 as measured on the Shore A hardness scale. Numerous elastomers are suitable for use; polyurethane polymers are preferred. A single type of elastomer may be used for the entire base or two or more elastomers may be conjoined and assembled to form the base.
    Type: Application
    Filed: January 13, 2006
    Publication date: February 22, 2007
    Inventor: Jeffery Irwin