Patents by Inventor Keith Grabo

Keith Grabo 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).

  • Tire tread
    Publication number: 20060169376
    Abstract: A tire tread has at least three rows of tread elements, each tread element in the at rows has at least one sipe and at least one sipe in each tread element row has a tie bar therein. Each tie bar in the sipes has a volume, and the volume of the sipe tie bar in each tread element in each row is not more than 10% different than the volume of the sipe tie bar in each tread element in any other tread row. Several of the tread rows have transverse grooves having groove tie bars therein.
    Type: Application
    Filed: September 30, 2005
    Publication date: August 3, 2006
    Inventors: Karl Sundkvist, Eddy Pan, Tooney Jones, David Griffin, John Shaffer, Charles Schmalix, Keith Grabo