Patents by Inventor John H. Grady

John H. Grady 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).

  • Punch for making such screw heads with slant rib
    Patent number: 5203742
    Abstract: A punch is provided for making a screw head with ribs on some of the driver surfaces. The punch includes a slanted groove for providing a rib which is slanted from the screw axis by a small angle between 1.degree. and 10.degree..
    Type: Grant
    Filed: January 14, 1992
    Date of Patent: April 20, 1993
    Assignee: Phillips Screw Company
    Inventor: John H. Grady
  • Screw head with slant rib
    Patent number: 5120173
    Abstract: A screw head is provided with ribs on some of the driver engageable surfaces. The rib is slanted outwardly from the screw axis by a small angle between 1.degree. and 10.degree..
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: June 9, 1992
    Assignee: Phillips Screw Company
    Inventor: John H. Grady