Patents by Inventor David Sprake

David Sprake 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).

  • Drill tool
    Patent number: 7112015
    Abstract: A drill tool comprises a drive shaft (2) that is arranged to allow rotational movement to be transmitted from a drill to a drill bit holder (10) even when the opposite ends of the drive shaft are not axially aligned. The end of the drive shaft housing the drill bit holder (10) can be inserted into a guide member (14) that includes a planar element (18, 42) that is arranged to ensure that the drill bit is maintained at substantially 90° to the surface of a work piece being drilled even if the drill itself is not so aligned.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: September 26, 2006
    Assignee: Airbus UK Limited
    Inventors: Philip Roberts, David Sprake
  • Drill tool
    Publication number: 20040240951
    Abstract: A drill tool comprises a drive shaft (2) that is arranged to allow rotational movement to be transmitted from a drill to a drill bit holder (10) even when the opposite ends of the drive shaft are not axially aligned. The end of the drive shaft housing the drill bit holder (10) can be inserted into a guide member (14) that includes a planar element (18, 42) that is arranged to ensure that the drill bit is maintained at substantially 90° to the surface of a work piece being drilled even if the drill itself is not so aligned.
    Type: Application
    Filed: March 10, 2004
    Publication date: December 2, 2004
    Inventors: Philip Roberts, David Sprake