Four Or More Layers Patents (Class 442/241)
  • Patent number: 7901752
    Abstract: A belt designed for lead acid battery plate pasting that is rendered dimensionally stable and incompressible and is also rendered hydrophobic to allow water handling without absorption and subsequent contamination of lead oxide into the structure.
    Type: Grant
    Filed: June 16, 2006
    Date of Patent: March 8, 2011
    Assignee: Albany International Corp.
    Inventor: Mark J. Levine
  • Patent number: 7867928
    Abstract: A composite sandwich panel a first facing and a second facing over a core layer, the first and second facings having at least one fiberglass layer between an inner and an outer graphite layer.
    Type: Grant
    Filed: December 14, 2007
    Date of Patent: January 11, 2011
    Assignee: Sikorsky Aircraft Corporation
    Inventors: Darryl M. Toni, Bruce H. Barr, Jeffrey G. Sauer, Jonathan Bremmer, Thomas Ranalli, Alan J. Norwid
  • Publication number: 20090197021
    Abstract: Embodiments of the invention can provide systems and methods for providing an artificial grass system. One embodiment of the invention can provide an artificial grass system with a woven tubular-shaped fabric and tufted artificial turf yarn. For example, the woven tubular-shaped fabric can be made from at least two types of yarn with different shrink characteristics. Various embodiments of the invention can provide improved drainage, shock absorbency, load displacement, and dimensional stability characteristics for an artificial grass or turf system.
    Type: Application
    Filed: June 1, 2007
    Publication date: August 6, 2009
    Applicant: TEN CATE THIOBAC B.V.
    Inventors: David Michael Jones, Kevin Nelson King, Robert Peter Rossing
  • Patent number: 7241710
    Abstract: A shaped sheet usable for the production of slabs made from a material mixture of granulated stone material and/or sand and by a binding resin includes a flat base and a peripheral frame projecting from the base for a predetermined height so as to define a seat of dimensions corresponding in plan to those of the slab to be produced. The structure of the flat base includes a first rubber layer of previously cured rubber forming a first surface which adapted to be in contact with said the material mixture and a second rubber layer of previously cured rubber, a first layer of cloth and a second layer cloth, wherein the said second cloth includes a second outwardly directed surface of the shaped sheet.
    Type: Grant
    Filed: October 7, 2004
    Date of Patent: July 10, 2007
    Inventor: Luca Toncelli
  • Patent number: 7067443
    Abstract: A multilayer composite body includes thermoplastic layers and layers of natural fibers bound with thermoplastic synthetic material. The composite body has at least one reinforcing layer made of an open-cell fabric of melting fibers. The reinforcing layer is penetrated on one or both sides by the melting thermoplastic synthetic material of adjoining natural-fiber layers and is integrated there for reinforcement. The reinforcing layer can also be disposed in addition or only between natural-fiber and pure thermoplastic layers or between thermoplastic layers. Such a composite body has excellent mechanical properties, in particular with regard to bending stress and impact resistance.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: June 27, 2006
    Assignee: Moeller Tech GmbH
    Inventor: Friedhelm Beckmann
  • Publication number: 20040132368
    Abstract: Dense, highly stable, high performance ballistic material comprises at least one woven layer of ballistic grade fiber (preferably a stack of such layers) and at least one nonwoven layer of fabric which is entangled with the woven or unidirectional layer by needle felting. The resulting core material does not require assembly of individual woven layers during subsequent manufacture of ballistic articles and exhibits excellent ballistic performance at low areal densities and thicknesses.
    Type: Application
    Filed: September 10, 2003
    Publication date: July 8, 2004
    Applicant: Tex Tech Industries, Inc.
    Inventors: Allen L. Price, David F. Erb, Eric D. Ritter
  • Patent number: 6514888
    Abstract: A cushioning material for forming press includes fiber material layers 31 and 32 superimposed with a bonding material layer 30 interposed, an upper rubber layer 33 positioned on an upper surface of one fiber material layer 31, a lower rubber layer 34 positioned on a lower surface of the other fiber material layer 32, an upper exudation preventing layer 35 positioned on an upper surface of the upper rubber layer 33, and a lower exudation preventing layer 36 positioned on a lower surface of the lower rubber layer 34.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: February 4, 2003
    Assignee: Yamauchi Corporation
    Inventors: Atsuo Tanaka, Akira Yoshida
  • Patent number: 6162746
    Abstract: A composite is disclosed which is resistant to knife and ice pick stab penetration and is made from a plurality of layers of woven polybenzoxazole or polybenzothiazole fibers, a plurality of ballistic layers, and a plurality of tightly-woven penetration resistant layers.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: December 19, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Minshon J. Chiou
  • Patent number: 6147018
    Abstract: A composite is disclosed which is resistant to knife stab penetration and is made from at least one layer of woven polybenzoxazole or polybenzothiazole fibers and at least one layer of a fiber network of another polymer.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: November 14, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Minshon J. Chiou
  • Patent number: 6143414
    Abstract: It includes two outer sheets of continuous-strand fiberglass fabric and a core of non-woven fiberglass formed by sheets of fiberglass paper, all sheets being impregnated with epoxy resin, and presenting at least one sheet of conducting material, on one or both outer sides; it is characterized in that it incorporates in the non-woven fiberglass core at least one intermediate sheet of fiberglass fabric impregnated with resin.It allows manufacturing of reliable printed circuits, even when using surface-mounted components, while at the same time its cost is relatively low; it is particularly suitable for the field of consumer and semi-professional electronics.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: November 7, 2000
    Inventors: Felip Balsells Coca, Antonio Rodriguez Siurana
  • Patent number: 5786283
    Abstract: A strip for dental plastic retainers or plastic dental prosthesis consisting of at least 4 and at most 8 interconnected layers of endless threads which possess a yarn count of less than 1 tex; the strip possesses a thickness of maximum 500 .mu.m; the endless fibers of a layer (10) consist preferably of colorless glass fibers in which the cross linkage of the resin which beds-in the fibers is simplified by the effects of light. Preferably, each individual layer consists of a strip whose warp threads (11) and weft yarns (12) are combined to a woven strip in the form of a plain fabric weave bond.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: July 28, 1998
    Inventor: Geri Borer