Patents by Inventor Paul Edmund Theis

Paul Edmund Theis 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).

  • Sleeved/interference fit (threaded) fastener installation tool
    Patent number: 6370758
    Abstract: An apparatus and method for installing a threaded fastener having a sleeved or interference fit into a workpiece. The apparatus of the present invention includes a pulling device for pulling the threaded fastener into the workpiece, an adapter for connecting the threaded fastener and the pulling device, and a collar that fits over the adapter for allowing the adapter to more inside the collar when subject to a pulling force from the pulling device. In addition, the aforementioned apparatus may be used in a method for installing the threaded fastener having a sleeved or interference fit into the workpiece. The method includes inserting the threaded fastener into the workpiece until the threads of the fastener are exposed on the other side of the workpiece, attaching an adapter to the threaded fastener, placing the collar over the adapter and attaching the pulling device. The pulling device is then pressurized so as to pull the threaded fastener into the workpiece until the threaded fastener is fully seated.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: April 16, 2002
    Assignee: Northrop Grumman Corporation
    Inventor: Paul Edmund Theis
  • Sleeved/interference fit (threaded) fastener installation tool
    Patent number: 6178614
    Abstract: An apparatus and method for installing a threaded fastener having a sleeved or interference fit into a workpiece. The apparatus of the present invention includes a pulling device for pulling the threaded fastener into the workpiece, an adapter for connecting the threaded fastener and the pulling device, and a collar that fits over the adapter for allowing the adapter to more inside the collar when subject to a pulling force from the pulling device. In addition, the aforementioned apparatus may be used in a method for installing the threaded fastener having a sleeved or interference fit into the workpiece. The method includes inserting the threaded fastener into the workpiece until the threads of the fastener are exposed on the other side of the workpiece, attaching an adapter to the threaded fastener, placing the collar over the adapter and attaching the pulling device. The pulling device is then pressurized so as to pull the threaded fastener into the workpiece until the threaded fastener is fully seated.
    Type: Grant
    Filed: October 13, 1998
    Date of Patent: January 30, 2001
    Assignee: Northrop Grumman Corporation
    Inventor: Paul Edmund Theis