Patents Represented by Attorney, Agent or Law Firm Gary A. Samuels
  • Oil reservoir
    Patent number: 5534062
    Abstract: An oil supply device for supplying oil to a roll of an image reproduction machine, which includes an oil reservoir formed of an open-cell melamine foam; and a layer of oil permeation control material extending over the reservoir for controlling supply of oil from the reservoir to the roll. The oil permeation control material being formed of porous PTFE produced by fusing particles of grannular PTFE such as to form a porous integral network of interconnected particles.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: July 9, 1996
    Assignee: W. L. Gore & Associates (UK) Ltd.
    Inventors: Keith Dawson, Robert Hayhurst
  • Two-way stretchable fabric laminate and articles made from it
    Patent number: 5529830
    Abstract: The invention is a stretchable layered fabric laminate which is air impermeable and waterproof while being permeable to water vapor. The stretchable fabric laminate includes a stretchable composite material layer consisting of a hydrophobic protective layer of a porous polymeric material on each side of a layer of hydrophilic water-vapor-permeable synthetic polymer. The composite material layer is laminated to at least one layer of stretchable fabric. The stretchable layered fabric laminate has excellent stretch and recovery properties in both machine and transverse directions, and is useful for the manufacture of form-fitting articles of protective clothing and other end uses.
    Type: Grant
    Filed: May 25, 1994
    Date of Patent: June 25, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Anita Dutta, Edward J. Daniel, Robert C. Willmann
  • Sock-like shoe insert
    Patent number: 5526584
    Abstract: A sock-like shoe insert is provided which incorporates an upper of waterproof, water-vapor permeable functional layer for waterproof, breathable footwear and a sole of a waterproof, non-porous plastic film that can be stretched in two directions.
    Type: Grant
    Filed: January 10, 1994
    Date of Patent: June 18, 1996
    Inventors: Walter Bleimhofer, Rita Danielak
  • Seeded microemulsion polymerization for the production of small polymer particles
    Patent number: 5523346
    Abstract: In this invention an aqueous seeded microemulsion polymerization procedure is provided in which colloidal polymer particles are produced from tetrafluoroethylene or tetrafluoroethylene/comonomer or other polymerizable monomers. The particles have an average diameter between 1 to 100 nanometer (0.001-0.1 micrometer) preferably 1 to 80 (0.001-0.08 micrometer), more preferably 5 to 100 nanometer (0.005-0.1 micrometer). A microemulsion is formed of a liquid monomer in water and a gaseous monomer is added either before or after polymerization is initiated.
    Type: Grant
    Filed: June 10, 1994
    Date of Patent: June 4, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Huey S. Wu
  • Gas-permeable, liquid-impermeable vent cover
    Patent number: 5522769
    Abstract: A flexible, insertable vent cover is formed from a flexible, resilient material. The cover has a through passageway; a gas-permeable, liquid-impermeable membrane traversing the passageway; a diaphragm valve covering the membrane; and an annular securing ring that maintains the valve in a protective position with respect to the membrane in order to protect the membrane from immersion in or impingement by liquid.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: June 4, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: David T. DeGuiseppi
  • Vented vial method of minimizing contamination of freeze-dried products
    Patent number: 5522155
    Abstract: The present invention relates to a lyophilization process involving the use of a cap intended for vials or use therewith for containers that are subjected to lyophilization conditions where the cap, which may be resiliently helped in place or screwed on, includes a plug member movable within a fluid passageway in the cap, the plug member while positioned in the fluid passageway is movable between a first upwardly extending venting position and second downwardly engaging, sealing position whereby fluid from the vial or container is precluded from flowing through the fluid passageway in the cap.
    Type: Grant
    Filed: April 7, 1995
    Date of Patent: June 4, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: C. Bradford Jones
  • Waterproof breathable footwear with extended inside liner layer
    Patent number: 5505011
    Abstract: Waterproof, breathable footwear with an upper connected to an insole, the upper having an outside layer formed of an outer upper material and an inside layer constructed of a waterproof, water vapor-permeable functional layer and a liner material in which on the bottom end of the upper, the inside layer extends about 5 mm beyond the outside layer. Only the bottom end of inside layer is sewn to insole. The bottom end of outside layer is glued to the inside layer by an adhesive. An outsole is injection molded onto the insole, and the bottom ends of inside and outside layers.
    Type: Grant
    Filed: July 19, 1994
    Date of Patent: April 9, 1996
    Inventor: Walter Bleimhofer
  • Electromagnetic interfernce shielding filter
    Patent number: 5506047
    Abstract: A porous composite material made of porous electrically conductive materials coated with or laminated to porous hydrophobic or oleophobic materials. The porous composite material has excellent electromagnetic radiation shielding properties and resists passage of particles through it while permitting air or other gases to flow through it.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: April 9, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Fred G. Hedrick, Craig D. Lack
  • Aqueous microemulsion polymerization of tetrafluoroethylene
    Patent number: 5504170
    Abstract: Polytetrafluoroethylene (PTFE) structures are described which are prepared by polymerizing liquid tetrafluoroethylene in an aqueous microemulsion region to obtain small particles of PTFE.
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: April 2, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Huey S. Wu
  • Apparatus for measuring hot gas content
    Patent number: 5499528
    Abstract: A gas monitoring apparatus with a heatable hose assembly having a central polymer tube of polyether ether ketone wrapped with a layer of polymer tape is described which is used to provide hot gases to a gas monitoring device. Heating elements for heating the central polymer tube can be arranged on the layer of polymer tape as can be an element for monitoring and controlling the element for heating the central polymer tube. Surrounding the arrangement can be a layer of thermal insulation and a protective jacket.The assembly is of utility for use in systems for the monitoring of acid gases from emission stacks.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: March 19, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Bamdad Bahar
  • Process for preparing selectively conductive materials by electroless metal deposition and product made therefrom
    Patent number: 5498467
    Abstract: There is provided a process for producing conductive areas through selected portions of the Z axis of a porous planar material. In the process, the planar material is sensitized to the reception of electroless metal with an electroless metal deposition solution. The planar material is provided throughout the selected Z axis areas with a metal salt composition which on exposure to radiant energy, such as light, electron beams, x-ray, and the like, so as to convert the metal cations to metal nuclei. The metal nuclei is then displaced with a more stable metal, such as palladium and then the material is electrolessly plated. The metalized planar material is then imbibed with a resin at such a percentage so that adhesion is provided between two substrates without loss of conductivity in the Z axis.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: March 12, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Carmine G. Meola
  • Planar cable array
    Patent number: 5496970
    Abstract: This invention provides a high-density planar contact array capable of interconnecting various electronic devices using a pad to pad approach or pad to pin, which is capable of accommodating non-coplanarity in the Z axis of printed circuit boards but which still maintains good electrical contact.The array comprises an insulative substrate sheet that has a plurality of parallel conductive lines terminating in a pad over a hole in the substrate.
    Type: Grant
    Filed: September 20, 1994
    Date of Patent: March 5, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Mark S. Spencer
  • Gas filter
    Patent number: 5496396
    Abstract: An ostomy filter for colostomy and ileostomy bags is gas-permeable to allow venting, and liquid-impermeable to prevent leakage. It includes a hydrogen sulphide adsorbent to remove smells. The filter comprises 9 to 50% by weight of particles of unsintered granular polytetrafluoroethylene (PTFE), 30 to 82% by weight of particles of comminuted sintered expanded porous PTFE, and 9 to 30% by weight of particulate water-insoluble H.sub.2 S adsorbent. The particles are fused together by baking at elevated temperature to form a gas-permeable liquid-impermeable network. The comminuted sintered expanded porous PTFE is preferably formed by comminuting uniaxially expanded PTFE fibre.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: March 5, 1996
    Assignee: W. L. Gore & Associates (UK) Ltd.
    Inventors: Andrew M. Allan, Akis Katsakoglou
  • Wrapped composite gasket material
    Patent number: 5494301
    Abstract: A composite gasket material composed of a core of elongated polytetrafluoroethylene wrapped with a high strength porous expanded polytetrafluoroethylene film is provided. The composite gasket material exhibits increased resistance to creep while in use so that thickness of the composite gasket material and thus gasket stress is maintained.
    Type: Grant
    Filed: April 20, 1993
    Date of Patent: February 27, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Elizabeth M. Hamilton, Eric W. Lalli, Cindy B. Lubin, Wanda F. Sparks, Alfred F. Waterland, III
  • Weather-resistant electromagnetic interference shielding for electronic equipment enclosures
    Patent number: 5488766
    Abstract: Weather-resistant electromagnetic radiation shielding materials and structures for electromagnetic interference attenuation for electronic equipment situated in unshielded outdoor housings are described.
    Type: Grant
    Filed: October 7, 1994
    Date of Patent: February 6, 1996
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Michael Gerry, David Z. Kelly, Michael G. Ryan, Thomas E. Dykes, Robert Sassa
  • Liquid metering and coating device
    Patent number: 5482552
    Abstract: A liquid metering and coating device made of a liquid permeation control material including porous polytetrafluoroethylene, adhered to a porous support material of open-celled foam. The porous support and permeation control material contain mixtures of silicone oil and silicone rubber which bond to the porous support material and form an interconnected network of silicone rubber throughout the device. The device is suitable for use as a part of a toner fixation mechanism in a plain paper copying machine.
    Type: Grant
    Filed: March 17, 1994
    Date of Patent: January 9, 1996
    Assignee: Japan GORE-TEX, Inc.
    Inventors: Hiroyasu Kikukawa, Hiroshi Kato
  • Printed circuit board with a coverlay film
    Patent number: 5473118
    Abstract: A printed circuit board assembly having a coverlay film which is a composite film consisting of a porous fluoropolymer film coated with a thermoplastic or heat-curing adhesive is disclosed. The coverlay film has excellent conformability and adhesion to the printed circuit board and low dielectric constant.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: December 5, 1995
    Assignee: Japan Gore-Tex, Inc.
    Inventors: Sunao Fukutake, Kazuhiko Ohashi, Akira Urakami
  • Polytetrafluoroethylene filamentary material
    Patent number: 5470655
    Abstract: A filamentary material of polytetrafluoroethylene (PTFE) having an apparent density of 2.0 g/cc or more, tensile strength of 5 grams/denier or more, tensile elongation at break of 15% or more, high axial orientation and high crystalline content is disclosed. The filamentary material, when analyzed by differential scanning calorimetry, exhibits two endothermic peaks; the ratio of the energy defined by the higher temperature peak to the energy defined by the lower temperature peak being equal to or greater than 2.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: November 28, 1995
    Assignee: Japan Gore-Tex, Inc.
    Inventor: Kengo Hirai
  • Elastic fixing roll
    Patent number: 5468531
    Abstract: An elastic fixing roll having an elastic, compliant body material and release surface material is disclosed. The body material comprises porous silicone rubber, fluorosilicone rubber, or fluorocarbon rubber foam, or a porous synthetic polymer foam reinforced with silicone rubber, fluorosilicone rubber, or fluorocarbon rubber. The release surface material is formed of porous polytetrafluoroethylene film containing silicone rubber, fluorosilicone rubber, or fluorocarbon rubber and is bonded to the body material by a non-continuous layer of adhesive.
    Type: Grant
    Filed: May 18, 1994
    Date of Patent: November 21, 1995
    Assignee: Japan Gore-Tex, Inc.
    Inventors: Hiroyasu Kikukawa, Hiroshi Kato
  • Oil-and water repellent gas-permeable filter
    Patent number: 5462586
    Abstract: An oil- and water-repellent filter which contains a porous filter material that has its internal and external surfaces coated with a compound formed by combining a fluoropolymer having a fluorine-containing aliphatic cyclic structure in the main chain and a fluoropolymer containing polyfluoroalkyl groups. The coating imparts superior oil- and water-repellency without impairment to the flow of air or other gases through the filter.
    Type: Grant
    Filed: September 7, 1994
    Date of Patent: October 31, 1995
    Assignee: Japan Gore-Tex, Inc.
    Inventors: Norihide Sugiyama, Masaru Nakamura, Sumihiro Moriyama, Fumihiro Sasaki