Patents by Inventor Ronald A. GRIMES

Ronald A. GRIMES 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).

  • RACQUET HAVING ELONGATED GROMMET BARRELS WITH IMPROVED DAMPING CHARACTERISTICS
    Publication number: 20140335979
    Abstract: A sports racquet with enhanced string vibration damping has grommets with elongated barrels on many of the cross strings. The internal diameter of the barrels is selected so as to preserve a minimum clearance between the cross string and its enclosing barrel, thereby mitigating vibration. The barrel lengths vary as a function of their distance from the top of the frame, so that their free ends are positioned near the nearest main string.
    Type: Application
    Filed: May 9, 2013
    Publication date: November 13, 2014
    Applicant: EF Composite Technologies, L.P.
    Inventor: Ronald A. GRIMES