Patents by Inventor Peter Wallace Bracken

Peter Wallace Bracken 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).

  • Patent number: 7519308
    Abstract: The present disclosure relates to a device and method for removal of image forming deposits between two contacting surfaces in an image forming device or image forming device cartridge. The method includes positioning an insert between the contacting surfaces which insert is capable of removing the deposits when the insert is inserted or removed from the device. The deposits may include those that may ultimately adhere or weld to the surfaces of the device during shipping and/or storage and upon exposure to differential environmental conditions.
    Type: Grant
    Filed: August 2, 2006
    Date of Patent: April 14, 2009
    Inventors: Peter Wallace Bracken, Donn Duane Bryant, Scott Richard Castle, Kevin Scott Kennedy, Abigail Susanne Marsh, David Lawrence Peter, Donald Wayne Stafford
  • Publication number: 20080038009
    Abstract: The present disclosure relates to a device and method for removal of image forming deposits between two contacting surfaces in an image forming device or image forming device cartridge. The method includes positioning an insert between the contacting surfaces which insert is capable of removing the deposits when the insert is inserted or removed from the device. The deposits may include those that may ultimately adhere or weld to the surfaces of the device during shipping and/or storage and upon exposure to differential environmental conditions.
    Type: Application
    Filed: August 2, 2006
    Publication date: February 14, 2008
    Inventors: Peter Wallace Bracken, Donn Duane Bryant, Scott Richard Castle, Kevin Scott Kennedy, Abigail Susanne Marsh, David Lawrence Peter, Donald Wayne Stafford
  • Patent number: 6767489
    Abstract: Solid rollers of a urethane material are formed in closed mold formed by a tube and two end plugs spaced by a shaft, the latter becoming the shaft for the roller. The closed mold avoids rough grinding to a cylindrical shape, as well as avoiding the resulting waste of material and introduction of defects that arise from rough grinding. The formation of bubbles during injection of the urethane material is avoided by filling the closed mold with carbon dioxide gas prior to injection. The formation of gate marks in the urethane material is avoided by repositioning the end caps after injection to separate the injection gate from the cylindrical cavity. The need to trim the ends of the roller is avoided by providing an annular cavity between the top end cap and the tube that receives excess urethane material to be drawn into the cylindrical cavity as the urethane shrinks during curing.
    Type: Grant
    Filed: July 29, 2002
    Date of Patent: July 27, 2004
    Assignee: Lexmark International, Inc.
    Inventors: Peter Wallace Bracken, Terry Cutshall, Wojciech Starski
  • Publication number: 20040016864
    Abstract: Solid rollers of a urethane material are formed in closed mold formed by a tube and two end plugs spaced by a shaft, the latter becoming the shaft for the roller. The closed mold avoids rough grinding to a cylindrical shape, as well as avoiding the resulting waste of material and introduction of defects that arise from rough grinding. The formation of bubbles during injection of the urethane material is avoided by filling the closed mold with carbon dioxide gas prior to injection. The formation of gate marks in the urethane material is avoided by repositioning the end caps after injection to separate the injection gate from the cylindrical cavity. The need to trim the ends of the roller is avoided by providing an annular cavity between the top end cap and the tube that receives excess urethane material to be drawn into the cylindrical cavity as the urethane shrinks during curing.
    Type: Application
    Filed: July 29, 2002
    Publication date: January 29, 2004
    Inventors: Peter Wallace Bracken, Terry Cutshall, Wojciech Starski
  • Patent number: 5797076
    Abstract: A compliant doctor blade has a metal bar (13) with bottom attached by dual side adhesive tape (15) to a resilient layer of porous foam (7). The bottom of the foam layer is attached by dual side adhesive tape (8) to a shim (1), which is stiff in the direction of movement of the roller (9) which the shim contacts. The shim has a polyester body (3) and a bottom layer (5) containing abrasive grit and conductive carbon black. Finally, the end of the doctor blade is dipped in a conductive paste which hardens into a conductive coating (17) which bridges the conductive layer of the shim and the metal bar. Advantages are reduced costs and improved performance, particularly with respect to streaks from prenip packing.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: August 18, 1998
    Assignee: Lexmark International, Inc.
    Inventors: Peter Wallace Bracken, Jeffery Richard Brener, Martin Victor Digirolamo, Samuel Edward Mullinix, Jr., Donald Wayne Stafford, Peter Eric Wallen