At Least Three Layers Patents (Class 442/326)
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Patent number: 5891559Abstract: A method of radiochemical analysis comprises the steps of providing a solid phase extraction sheet material comprising ion-specific sorptive or reactive particles and a porous matrix as carrier for the particles, and providing a fluid including an ion-containing radiochemical analyte comprising the specific ion, contacting the sheet material with the fluid for a time sufficient for the particles to selectively extract the analyte from the fluid, and analyzing the sheet material in a direct mode for quantitative or qualitative data relating to the radiochemical analyte. Solid phase extraction sheet materials and methods for their preparation are also disclosed.Type: GrantFiled: September 2, 1997Date of Patent: April 6, 1999Assignee: Minnesota Mining and Manufacturing Co.Inventors: Garold L. Goken, Wolfgang H. Strehlow
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Patent number: 5876834Abstract: A sacrificial fabric structure is disclosed for protection from the moving chain in chain saws. The structure includes fabric woven in a loose satin weave.Type: GrantFiled: January 23, 1998Date of Patent: March 2, 1999Assignee: E. I. du Pont de Nemours and CompanyInventors: Brian Emmett Foy, Navin Talakchand Tejani
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Patent number: 5874136Abstract: Several headliner embodiments include a felt layer connected to a cover layer. In the preferred embodiments a pair of felt layers are positioned on both sides of a central mat layer. The mat layer provides loft, while the felt layers in combination with the mat layers provide other desired characteristics for the headliner.Type: GrantFiled: October 17, 1997Date of Patent: February 23, 1999Assignee: UT Automotive Dearborn, Inc.Inventors: Roger Michna, Girma Gebreselassie, Harold G. Wolf, Jr.
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Patent number: 5866215Abstract: A composite component is provided having at least one felt layer as reinforcement when used for crash and/or noise management applications, and preferably also including at least one reinforcement fiber layer. At least one of the reinforcement layers, preferably a felt layer, may be formed into a preform which is placed into a mold of suitable shape to form the component, along with the other reinforcement layers, with a resin/polymer being injected into the mold and then cured to form the composite component.Type: GrantFiled: April 29, 1996Date of Patent: February 2, 1999Assignees: The Regents of the University of California, Clark-Cutler-McDermottInventors: Vistasp M. Karbhari, Thomas R. McDermott
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Patent number: 5759662Abstract: A facing fabric (10) for a reusable incontinent product (40) having a pair of multi-filament ground yarn sets (14, 16) interknitted together with a warp knit third set of yarns (18) which define loops (22) on one face of the fabric (10) in a warp knit three bar construction. The loop-facing yarns (18) are unnapped, multi-filament polyester with a denier of about 150 to 300 denier in a range of about 1 to 5 denier per filament, and advantageously about 48 filaments when the denier is about 150 and about 132 filaments when the denier is about 300. A barrier layer (46) may be added to the fabric (10) to create the reusable incontinent product (40).Type: GrantFiled: December 19, 1996Date of Patent: June 2, 1998Assignee: Standard Textile Co., Inc.Inventor: Mark J. Heiman
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Patent number: 5731063Abstract: This invention pertains to papermaking felts, methods of making such felts, methods of using the felts, and methods of making paper using such felts. A felt of the invention contains at least one substrate web having a fuse-bonded joint extending across the width of the felt. The joint is preferably formed by superposing, onto each other, end portions of a flat-woven substrate web element, with the end portions extending away from the ends in a common direction, and concurrently severing the ends from the end portions, and fuse bonding the end portions to each other, along a common cut line.Type: GrantFiled: June 6, 1995Date of Patent: March 24, 1998Assignee: Appleton MillsInventors: Gary Schultz, Dennis Le Gault
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Patent number: 5726105Abstract: The graphitized composite article of the present invention is formed by embedding carbon fiber felt in a matrix of a carbon filler; a thermosetting resin and a solvent; curing the composite article; then, carbonizing and graphitizing the cured composite article to form the graphitized composite article for use as a separator plate capable of substantially inhibiting mixing of hydrogen and oxygen and/or the loss of electrolyte within a fuel cell stack. The graphitized composite article may be a graphitized laminate.Type: GrantFiled: April 20, 1995Date of Patent: March 10, 1998Assignee: International Fuel CellsInventors: Albert P. Grasso, Ronald G. Martin, Robert P. Roche
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Patent number: 5690526Abstract: An article made from at least one network of high strength fibers and a thermoplastic polyurethane matrix material derived from an aliphatic didiisocyanate and a polyol. Preferably, the article is made from at least one prepreg element which includes at least two adjacent layers of the high strength fiber network in the thermoplastic polyurethane matrix material.Type: GrantFiled: July 3, 1996Date of Patent: November 25, 1997Inventors: Chi-Tsun Leroy Lin, Laura G. Wilson
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Patent number: 5685247Abstract: A multi-layer material for use in incontinence products comprises a base layer comprising a needled felt containing not less than 50% by weight polyester fiber, wherein the surface regions of the felt are denser than the central region thereof, which remains substantially unneedled. In addition, a second, multi-ply, layer is provided by a unitary fabric comprising two outer plies of knitted polyester fiber fabric with a ply of monofilament polyester accommodated therebetween. In order to prevent strike-through, furthermore, a barrier layer, e.g. of a polyurethane coated fabric, is also provided, as is also a fourth, skin-contact, layer with a nap finish to provide a comfortable "feel" to the product. Incontinence products made from this material exhibit good absorbency, little or no strike-through and a dry skin effect.Type: GrantFiled: February 28, 1996Date of Patent: November 11, 1997Assignee: British United Shoe Machinery LimitedInventor: Frank Hosselbarth
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Patent number: 5654060Abstract: An insulating blanket for a bulkhead in an engine nacelle comprises a fabric backing layer, a central insulating core, a ceramic precursor-impregnated hot-side fabric layer and, as required, erosion-preventing wire mesh. The backing layer comprises a fiberglass fabric. The insulating core comprises a ceramic felt. The hot side layer comprises one or more layers of resin-impregnated fiber glass fabric. The blanket is precured to provide a predetermined geometric shape.Type: GrantFiled: June 16, 1995Date of Patent: August 5, 1997Assignee: The Boeing CompanyInventors: Wesley L. Holman, Frederick L. Knoll
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Patent number: 5643661Abstract: A passive fire protection sheet material is disclosed. The sheet material comprises at least one layer of a rubber compound containing a frit composition which when exposed to heat or flame will char and fuse the ceramic to form a layer within the char together with one or more layers of ceramic fiber material.Type: GrantFiled: August 21, 1995Date of Patent: July 1, 1997Assignee: AIC ISO Covers LimitedInventor: Vincent William Spano
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Patent number: 5635271Abstract: An improved shaped article comprising a thermoformed composite sheet, which is a layer of thermoplastic polymer attached to a surface of a lightweight conformable fabric, the other surface of the fabric being attached to a layer of rigid foam, provides the article with improved wall thickness uniformity and impact resistance.Type: GrantFiled: September 2, 1994Date of Patent: June 3, 1997Assignee: E. I. Du Pont de Nemours and CompanyInventor: Dimitri P. Zafiroglu