Patents by Inventor William Haul Haddock

William Haul Haddock 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).

  • Endless belt for use in digital imaging systems
    Patent number: 6228448
    Abstract: An endless belt for use in digital imaging systems is provided having edge to edge uniform flatness, and precise circumferential and edge to edge thickness. The layers comprising the belt may be tailored as desired for use in either image recording, image transfer or sheet transport operations. In one embodiment, the belt includes an elastomeric base layer, an elastomer-impregnated spun cord layer, a woven or non-woven fabric layer, and an elastomeric surface ply. The belt is preferably manufactured by building the layers on a workpiece and then curing the layers.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: May 8, 2001
    Assignee: Day International, Inc.
    Inventors: Sylvain L. Ndebi, William Haul Haddock, Allen T. Shannon, Michael E. McLean, Melvin Douglas Pinkston, Ray Brooks, Thomas Gerald Ferguson
  • Endless belt for use in digital imaging systems and method of making
    Patent number: 6217964
    Abstract: An endless belt for use in digital imaging systems is provided having uniform edge to edge flatness, and precise circumferential and edge to edge thickness. The layers comprising the belt may be tailored as desired for use in either latent image formation, image transfer or sheet transport operations. In one embodiment, the belt includes an elastomeric base layer, an intermediate polymer ply over the base layer, and an outer elastomeric layer. Alternatively, the belt includes an elastomeric base layer and an outer polymer layer. The belt may further include reinforcing layers which may comprise a woven or non-woven fabric layer and/or an elastomerimpregnated spun cord layer. The belt is preferably manufactured by building the layers on a workpiece and then curing the layers.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: April 17, 2001
    Assignee: Day International, Inc.
    Inventors: Sylvain L. Ndebi, William Haul Haddock, Allen T. Shannon