Patents by Inventor Robert Unsworth

Robert Unsworth 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).

  • Shrink fit holder and methods of drilling and reaming
    Patent number: 7192226
    Abstract: A drill has a unitary drill bit and chuck structure that includes a drill bit and a chuck. The chuck encloses a portion of the drill bit and has a thread. A rotatable drive element having a thread engages the thread of the chuck. The chuck is heat shrunk onto the drill bit to form a unitary structure through direct bonding of the chuck with the drill bit.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: March 20, 2007
    Assignee: Industrial Tooling Corporation Limited
    Inventor: Robert Unsworth
  • Novel shrink fit holder and methods of drilling and reaming
    Publication number: 20040258494
    Abstract: A drill has a unitary drill bit and chuck structure that includes a drill bit and a chuck. The chuck encloses a portion of the drill bit and has a thread. A rotatable drive element having a thread engages the thread of the chuck. The chuck is heat shrunk onto the drill bit to form a unitary structure through direct bonding of the chuck with the drill bit.
    Type: Application
    Filed: June 15, 2004
    Publication date: December 23, 2004
    Inventor: Robert Unsworth