Patents by Inventor David V. Cunningham

David V. Cunningham 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: 6818091
    Abstract: The invention relates to a process for making a puncture resistant laminated fabric comprising laminating a layer of polyethylene film to a layer of fabric comprised of an ultra high molecular weight polyethylene. The laminating step is conducted at a temperature between about 230° F. and about 290° F. with a contact time of between about 5 minutes and about 15 minutes with the application of a laminating pressure of between about 50 psi and about 500 psi.
    Type: Grant
    Filed: October 24, 1997
    Date of Patent: November 16, 2004
    Assignee: JHRG, LLC
    Inventors: John E. Holland, David V. Cunningham, Connie W. Holland
  • Patent number: 6280546
    Abstract: A method for making a cut and puncture resistant laminated fabric under a laminating pressure including the steps of rolling a thermoplastic film and a fabric constructed with a substantial majority of a high performance fiber around a small diameter core to form a wound bundle. The wound bundle is heated at a temperature of between about 250 and about 285 degrees Fahrenheit for a sufficient length of time to laminate the thermoplastic film to the fabric.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: August 28, 2001
    Assignee: JHRG, LLC
    Inventors: John E. Holland, David V. Cunningham, Connie W. Holland
  • Patent number: 5601775
    Abstract: A quasi monofilament having a high strength polyethylene fiber core with an adherent, abrasion resistant polymer sheath is prepared by feeding the core yarn through a crosshead die, while simultaneously supplying a polymer melt at a temperature greater than the melting point of the core yarn to the die, for sheathing the core yarn within the die with the melt under a sufficient pressure to cause the melt to adhere to the core yarn. The abrasion resistant polymer sheath includes an effective amount of a first polymer having ethylene crystallinity, a density of at least about 0.94 g/cm.sup.3, and a melt index of less than about 0.1 g/10 min. The composition used to sheathe the core yarn is characterized by a weight average tensile strength at yield of greater than about 13.8 MPa. The quasi monofilament has utility in applications subjected to high abrasion, such as sports fishing lines, kite lines, dental floss, "weedeater" lines and tennis racket strings.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: February 11, 1997
    Assignee: AlliedSignal Inc.
    Inventors: David V. Cunningham, Sheldon Kavesh, Christopher P. Griffin, Allan R. Hall
  • Patent number: 5573850
    Abstract: A quasi monofilament having a high strength polyethylene fiber core with an adherent, abrasion resistant polymer sheath is prepared by feeding the core yarn through a crosshead die, while simultaneously supplying a polymer melt at a temperature greater than the melting point of the core yarn to the die, for sheathing the core yarn within the die with the melt under a sufficient pressure to cause the melt to adhere to the core yam. The abrasion resistant polymer sheath includes an effective amount of a first polymer having ethylene crystallinity, a density of at least about 0.94 g/cm.sup.3, and a melt index of less than about 0.1 g/10 min. The composition used to sheathe the core yarn is characterized by a weight average tensile strength at yield of greater than about 13.8 MPa. The quasi monofilament has utility in applications subjected to high abrasion, such as sports fishing lines, kite lines, dental floss, "weedeater" lines and tennis racket strings.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: November 12, 1996
    Assignee: AlliedSignal Inc.
    Inventors: David V. Cunningham, Sheldon Kavesh, Christopher P. Griffin
  • Patent number: 5354605
    Abstract: An article which includes at least one layer of a network of high strength fibers, preferably extended chain polyethylene fibers. The fibers of the network are coated with a very low modulus elastomeric matrix material, preferably an acrylic ester copolymer, which has a tensile modulus of less than about 100 psi, a tenacity of less than 450 psi (3105 kPa), a glass transition temperature (T.sub.g) of about -10.degree. C. to about -20.degree. C., and an elongation-to-break of at least about 2000%. The article can further include a second matrix material, preferably made of polyethylene, adjacent to the fiber network layer.
    Type: Grant
    Filed: April 2, 1993
    Date of Patent: October 11, 1994
    Assignee: AlliedSignal Inc.
    Inventors: Leroy C.-T. Lin, Laura G. Wilson, David V. Cunningham
  • Patent number: 5185195
    Abstract: An improved article of the type comprising a plurality of flexible fibrous layers at least two of which are secured together by a securing means, said improvements comprising a securing means which comprises at least two adjacent paths wherein the distance between said paths is less than about 1/8 in.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: February 9, 1993
    Assignee: Allied-Signal Inc.
    Inventors: Gary A. Harpell, Dusan C. Prevorsek, David V. Cunningham