With Coating Or Impregnating Patents (Class 57/295)
  • Patent number: 4269024
    Abstract: A continuous elongate strength member for reinforcing an optical fibre cable consists of an assembly of aromatic polyamide filaments impregnated with a synthetic resin, in which the filaments are individually coated with the resin, and the filaments of at least an outer layer of the assembly are helically stranded. The impregnation is carried out by separating the filaments and immersing them in a low viscosity dispersion of the resin in a liquid medium; the filaments are then stranded, and the resin is cured. Apparatus for manufacturing the strength member and various forms of cable incorporating one or more strength members, are described.
    Type: Grant
    Filed: July 19, 1979
    Date of Patent: May 26, 1981
    Assignee: Associated Electrical Industries Limited
    Inventors: Raymond S. Ashpole, Colin J. Peachey, Arup K. Kar
  • Patent number: 4266396
    Abstract: PCT No. PCT/GB78/00019 Sec. 371 Date June 5, 1979 Sec. 102(e) date June 1, 1979 PCT Filed Oct. 3, 1978 PCT Pub. No. W079/00182 PCT Pub. Date Apr. 19, 1979The invention relates to wire ropes.There is disclosed a wire rope comprising a plurality of strands (4-12) twisted together with each strand (4-12) being individually covered by a respective sheath (16) of rubber or rubber substitute. Each strand (4-12) comprises a plurality of wires (14) twisted together with the direction of twist of at least the outer wires (14) in each strand (4-12) being opposite to the direction of twist of at least the outer wires (14) in the strands (4-12) adjacent to it, the rope having an outer covering sheath (18) of rubber or rubber substitute.In this way, the wires (14) of adjacent strands (4-12) do not cross each other, and stress on them is reduced.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: May 12, 1981
    Assignee: Cable Belt, Ltd.
    Inventor: Ian M. Thomson
  • Patent number: 4244176
    Abstract: A device for waxing a yarn in a spinning machine which includes an annular wax roll, and means for rotatably supporting the wax roll. The support means includes a solid cylindrical member integrally connected to the wax roll so as to project from one end of the wax roll, and a support spindle associated with the cylindrical member for allowing the integral rotation of the cylindrical member and the wax roll. The waxing device is disposed that the yarn, which travels from a supply of yarn to a yarn winding-up mechanism, contacts both the projected periphery of the cylindrical member and the one end of the wax roll. The rotation of the wax roll is caused mainly by the yarn contacting the solid cylindrical member so that the wax roll is not adversely affected by the yarn even when changes occur in the travel condition of the yarn, so that no grooves or concaved lines are formed in the end face of the wax roll.
    Type: Grant
    Filed: March 27, 1979
    Date of Patent: January 13, 1981
    Assignee: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho
    Inventors: Takeshi Shimizu, Kinpei Mitsuya
  • Patent number: 4244174
    Abstract: The instant specification describes an improved method for the manufacture of composite yarns having a central carrier with fibers or filaments adhered thereto. The method includes the step of using a partially oriented yarn as the carrier material and drawing or stretching the partially oriented yarn immediately prior to or as the yarn passes through an extruder to be coated with a binding material.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: January 13, 1981
    Assignee: The Bobtex Corporation, Ltd.
    Inventor: Andrew J. Bobkowicz
  • Patent number: 4184316
    Abstract: A novelty yarn having a pronounced variation in linear density is obtained by passing at least one multifilament yarn through a fluid tangling zone and by alternatingly and mechanically tensioning and relaxing the yarn within the tangling zone.
    Type: Grant
    Filed: March 17, 1978
    Date of Patent: January 22, 1980
    Assignee: Akzona Incorporated
    Inventor: Ernest J. Griset, Jr.
  • Patent number: 4171609
    Abstract: In the SZ twisting of conductors of electrical cables followed by extrusion of a plastic sheath in the same operation, an untwisting of the reversal points of the twist direction in the area of the cooling section of the extruder is prevented by guiding the extruded sheath immediately behind the extruder in such a manner as to be secured against torsion.
    Type: Grant
    Filed: July 18, 1978
    Date of Patent: October 23, 1979
    Assignee: Siemens Aktiengesellschaft
    Inventor: Wolfgang Feese
  • Patent number: 4159619
    Abstract: A novelty yarn having a pronounced variation in linear density is obtained by passing at least one multifilament yarn through a fluid tangling zone and by alternatingly and mechanically tensioning and relaxing the yarn within the tangling zone. This yarn may be impregnated or coated with wax.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: July 3, 1979
    Assignee: Akzona Incorporated
    Inventor: Ernest J. Griset, Jr.
  • Patent number: 4155216
    Abstract: A novelty yarn having a pronounced variation in linear density is obtained by passing at least two multifilament yarns through a fluid tangling zone and by alternatingly and mechanically tensioning and relaxing at least one of the yarns within the tangling zone. The novelty yarn is waxed.
    Type: Grant
    Filed: October 25, 1977
    Date of Patent: May 22, 1979
    Assignee: Akzona, Incorporated
    Inventor: Ernest J. Griset, Jr.
  • Patent number: 4153660
    Abstract: The disclosure relates to cospinning and drawing polyester filaments to produce a composite yarn which develops bulk due to differential shrinkage of the filaments when heated. Filaments of ethylene terephthalate synthetic linear condensation polymer are melt spun to form two separate filament bundles, a water-based spring finish is applied to the filaments of one bundle and a substantially non-volatile spin finish is applied to filaments of the other filament bundle, the filament bundles are drawn under identical treatment conditions during passage along separate paths and the filaments are then combined and intermingled during passage around draw rolls. The product is a mixed-shrinkage yarn wherein the filaments treated with aqueous-based finish have a higher heat-shrinkage than the filaments treated with non-volatile finish, even though both are otherwise processed in the same manner.
    Type: Grant
    Filed: October 28, 1977
    Date of Patent: May 8, 1979
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Cecil E. Reese