Patents by Inventor Jeff S. Haggard

Jeff S. Haggard 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).

  • Method and apparatus for spinning a web of mixed fibers, and products produced therefrom
    Patent number: 7192550
    Abstract: A device and method for spinning polymer fibers utilizes one or more independent sources of polymer materials, pumps for feeding polymer material from each of the sources, and a series of distribution plates with surface grooves, through holes and/or slots together defining separated distribution paths, each of which receives polymer material from one of said independent sources. The surface grooves are defined to a depth less than the thickness of the distribution plate. At least one distribution plate contains spinneret orifices defined by outlet surface grooves extending from the distribution path to the edge of that plate, whereby fibers are extruded from the spinneret orifices edgewise from the plate. The spinneret orifices may be defined by overlayed outlet surface grooves or slots defined in abutting plates.
    Type: Grant
    Filed: November 22, 2004
    Date of Patent: March 20, 2007
    Assignee: Hills, Inc.
    Inventors: Richard M. Berger, Jeff S. Haggard
  • Instant mixer spin pack
    Patent number: 5851562
    Abstract: A multiplate spin pack receives metered molten polymer and metered amounts of additive components selectively proportioned to produce desired characteristics in extruded fiber. The additive components are mixed together and blended with the polymer by passage through a pattern of mixer channels formed in opposed faces of spin pack mix plates immediately upstream of the spinning orifices of a spinneret. Mixing is produced by splitting the fluids into multiple paths and repeatedly converging the paths into boundary layer contact. Short flow paths of mixed polymer minimizes time and waste in change over procedures.
    Type: Grant
    Filed: May 13, 1996
    Date of Patent: December 22, 1998
    Assignee: Hills, Inc.
    Inventors: Jeff S. Haggard, Bryan Norcott
  • Process for making a fiber containing an additive
    Patent number: 5516476
    Abstract: A multiplate spin pack receives metered molten polymer and metered amounts of additive components selectively proportioned to produce desired characteristics in extruded fiber. The additive components are mixed together and blended with the polymer by passage through a pattern of mixer channels formed in opposed faces of spin pack mix plates immediately upstream of the spinning orifices of a spinneret. Mixing is produced by splitting the fluids into multiple paths and repeatedly converging the paths into boundary layer contact. Short flow paths of mixed polymer minimizes time and waste in change over procedures.
    Type: Grant
    Filed: November 8, 1994
    Date of Patent: May 14, 1996
    Assignee: Hills, Inc,
    Inventors: Jeff S. Haggard, Bryan Norcott