Coated Or Impregnated Patents (Class 57/217)
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Publication number: 20150113936Abstract: A hybrid rope (40) or a hybrid strand (50) comprising a core element (42, 52), a first (44, 54) and a second (46, 56) metallic closed layer surrounding said core element (42, 52). The core element (42, 52) includes a bundle of synthetic yarns. The first metallic closed layer (44, 54) includes a plurality of first strands of wires helically twisted together with the core element (42, 52) in a first direction. The second metallic closed layer (46, 56) includes a plurality of second wires or strands helically twisted together with said core element (42, 52) and said first metallic closed layer (44, 54) in a second direction. The cross-sectional area of the core element (42, 52) is larger than the total cross-sectional area of the first (44, 54) and second (46, 56) metallic closed layers. A corresponding method of producing such a hybrid rope or hybrid strand is also disclosed.Type: ApplicationFiled: April 15, 2013Publication date: April 30, 2015Applicants: NV BEKAERT SA, DSM IP ASSETS B.V.Inventors: Xavier Amils, Beste Durmus, Paulus Johannes Hyacinthus Marie Smeets
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Patent number: 9010079Abstract: Method for manufacturing a metal cord with three concentric layers including a first layer of diameter dc made up of M wire(s) of diameter d1, around which layer are wound together as a helix at a pitch p2, as a second layer, N wires of diameter d2, around which are wound as a helix at pitch p3, as a third layer, P wires of diameter d3. The N wires of the second layer are assembled around the layer to form, at a point called “assembling point”, an intermediate cord called “core strand” of M+N construction; upstream and/or downstream of the assembling point, the layer and/or the core strand is sheathed with a rubber or rubber composition by passing through at least one extrusion head; then the P wires of the third layer are assembled around the core strand to form a cord of M+N+P construction thus rubberized from the inside.Type: GrantFiled: May 6, 2011Date of Patent: April 21, 2015Assignees: Compagnie Generale des Etablissments Michelin, Michelin Recherche et Technique S.A.Inventors: Emmanuel Custodero, Sébastien Rigo, Jérémy Toussain
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Publication number: 20140311119Abstract: In an elevator rope, a plurality of steel outer layer strands are twisted together on an outer circumference of an inner layer rope. The inner layer rope has: a fiber core; a plurality of steel inner layer strands that are twisted together directly onto an outer circumference of the fiber core; and a resin inner layer rope coating body that is coated onto the outer circumference. A diameter of the inner layer strands is smaller than a diameter of the outer layer strands. The inner layer strands are greater in number than the outer layer strands.Type: ApplicationFiled: January 23, 2012Publication date: October 23, 2014Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Atsushi Mitsui
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Publication number: 20130220505Abstract: Metal cord with a plurality of concentric layers, of the type rubberized in situ, i.e. a cord that is rubberized from the inside, during its actual manufacture, with a rubber known as a filling rubber, in which all or some of the gaps situated between the wires of the cord contain a thermoplastic elastomer of the unsaturated type, particularly an unsaturated thermoplastic stirene (TPS) elastomer such as an SBS, SBBS, SIS or SBIS block copolymer for example. Such a thermoplastic elastomer, used in the molten state, presents no problems of parasitic stickiness if the filling rubber overspills out of the cord following manufacture; its unsaturated and therefore (co)vulcanizable nature makes it extremely compatible with the diene rubber matrices, notably natural rubber matrices as conventionally used as calendering rubber in the metal fabrics intended for reinforcing tires.Type: ApplicationFiled: May 6, 2011Publication date: August 29, 2013Applicants: Michelin Recherche et Technique S.A., Compagnie Generale Des Etablissements MichelinInventors: Thibaud Pottier, Sébastien Rigo, Jérémy Toussain
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Patent number: 8474235Abstract: A device and method for manufacturing a metal cord with three concentric layers, rubberized in situ, of M+N+P construction, wherein the method comprises the following steps which are performed in line: an assembling step by twisting N wires around a first layer to form, at a point named the “assembling point”, an intermediate cord named a “core strand” of M+N construction; downstream of the assembling point, a sheathing step in which the M+N core strand is sheathed with a rubber composition named “filling rubber” in the uncrosslinked state, an assembling step in which P wires of the first layer are twisted around the core strand thus sheathed, and a final twist-balancing step.Type: GrantFiled: November 10, 2009Date of Patent: July 2, 2013Assignees: Compagnie Generale des Etablissements Michelin, Michelin Recherche et Technique S.A.Inventors: Thibaud Pottier, Jeremy Toussain
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Patent number: 8342584Abstract: The present invention relates to a method of manufacturing single and multi-core lifting slings, the method comprising: aligning a plurality of core fibers to form a sling body; applying a coating along length of the sling body, wherein an initial layer of the coating seals the plurality of core fibers from exposure to contaminates; and applying additional layers of the coating in areas of the sling body subject to high crush and shear forces. Other exemplary embodiments include tensioning the plurality of core fibers and forming a multi-core lifting sling by applying a seaming coat of the coating material to the sling body and at least to one of a second sling body. In an exemplary embodiment, the coating can be at least an isocyanate mixed with an amine forming polyurea.Type: GrantFiled: December 31, 2009Date of Patent: January 1, 2013Inventor: Daniel T. Carmichael
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Publication number: 20120298281Abstract: The present invention relates to a three-layered metal cable of construction L+M+N usable as a reinforcing element for a tire carcass reinforcement, comprising an inner layer C1 having L wires of diameter d1 with L being from 1 to 4, surrounded by an intermediate layer C2 of M wires of diameter d2 wound together in a helix at a pitch p2 with M being from 3 to 12, said layer C2 being surrounded by an outer layer C3 of N wires of diameter d3 wound together in a helix at a pitch p3 with N being from 8 to 20, said cable being characterised in that a sheath formed of a cross-linkable or cross-linked rubber composition based on at least one diene elastomer covers at least said layer C2. The invention furthermore relates to the articles or semi-finished products made of plastics material and/or rubber which are reinforced by such a multi-layer cable, in particular to tires used in industrial vehicles, more particularly heavy-vehicle tires and their carcass reinforcement plies.Type: ApplicationFiled: July 17, 2012Publication date: November 29, 2012Applicant: MICHELIN RECHERCHE ET TECHNIQUE S.A.Inventors: Henri Barguet, Alain Domingo, Arnaud Letocart, Thibaud Pottier
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Patent number: 8245490Abstract: The present invention relates to a three-layered metal cable of construction L+M+N usable as a reinforcing element for a tire carcass reinforcement, comprising an inner layer C1 having L wires of diameter d1 with L being from 1 to 4, surrounded by an intermediate layer C2 of M wires of diameter d2 wound together in a helix at a pitch p2 with M being from 3 to 12, said layer C2 being surrounded by an outer layer C3 of N wires of diameter d3 wound together in a helix at a pitch p3 with N being from 8 to 20, said cable being characterized in that a sheath formed of a cross-linkable or cross-linked rubber composition based on at least one diene elastomer covers at least said layer C2. The invention furthermore relates to the articles or semi-finished products made of plastics material and/or rubber which are reinforced by such a multi-layer cable, in particular to tires used in industrial vehicles, more particularly heavy-vehicle tires and their carcass reinforcement plies.Type: GrantFiled: June 4, 2010Date of Patent: August 21, 2012Assignee: Michelin Recherche et Technique S.A.Inventors: Henri Barguet, Alain Domingo, Arnaud Letocart, Thibaud Pottier
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Publication number: 20120175035Abstract: Metal cord with three layers (C1+C2+C3) of 2+M+N construction, rubberized in situ, comprising a first layer or central layer (C1) comprised of two wires (10) of diameter d1 assembled in a helix at a pitch p1, around which central layer there are wound in a helix at a pitch p2, in a second layer (C2), M wires (11) of diameter d2, around which second layer there are wound in a helix at a pitch p3, in a third layer (C3), N wires (12) of diameter d3, the said cord being characterized in that it has the following characteristics (d1, d2, d3, p1, p2 and p3 being expressed in mm): 0.08?d1?0.50; 0.08?d2?0.50; 0.08?d3?0.Type: ApplicationFiled: July 2, 2010Publication date: July 12, 2012Applicants: Michelin Recherche et Technique S.A., Societe de Technologie MichelinInventors: Jeremy Toussain, Thibaud Pottier
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Publication number: 20120125512Abstract: Metal cord (C-1) with three layers (C1, C2, C3), which is rubberized in situ, comprising a core or first layer (10, C1) of diameter d1, around which there are wound together in a helix at a pitch p2, in a second layer (C2), N wires (11) of diameter d2, N varying from 5 to 7, around which there are wound together in a helix at a pitch p3, in a third layer (C3), P wires (12) of diameter d3, the said cord being characterized in that it has the following characteristics (d1, d2, d3, p2 and p3 being expressed in mm): 0.08?d1?0.40; 0.08?d2?0.35; 0.08?d3?0.35; 5?(d1+d2)<p2?p3<10?(d1+2d2+d3); over any 2 cm length of cord, a rubber composition called “filling rubber” (13) is present in each of the capillaries (14) lying on the one hand between the core (C1) and the N wires of the second layer (C2), and on the other hand between the N wires of the second layer (C2) and the P wires of the third layer (C3); the content of filling rubber in the cord is comprised between 5 and 30 mg per gram of cord.Type: ApplicationFiled: November 10, 2009Publication date: May 24, 2012Applicants: Michelin Recherchhe et Technique S.A., SOCIETE DE TECHNOLOGIE MICHELINInventors: Thibaud Pottier, Jeremy Toussain
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Publication number: 20120085077Abstract: The present invention is directed to a wire rope having a blackened finish designed for theatrical productions. The wire rope includes a plurality of strands that have a closed spiral arrangement with each other and are compacted. Each strand includes a center wire spirally surrounded by a plurality of inner wires that are spirally surrounded by a plurality of outer wires so that the outer wires completely encompass the inner wires. The center wire and the inner wires are made from a galvanized material and coated with a lubricant. The outer wires are made from a non-coated steel material. Each strand is compacted so the outer wires create a tight mechanical seal to protect the inner wires. The blackened finish on the wire rope is due to a black oxide coating treatment and provides for low visibility of the wire rope during theatrical performances.Type: ApplicationFiled: October 11, 2010Publication date: April 12, 2012Inventors: Bamdad Pourladian, Timothy W. Klein
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Patent number: 7770328Abstract: A cable (11) is provided comprising a steel cord (12) and a polymer material (15). The steel cord (12) has a diameter less than 2.5 mm, and is coated with the polymer material (15). The cable (11) has a permanent elongation of less than 0.05% at a permanent force of 50 N, after being subjected to a force of 450 N. Further, a window elevator system (300) comprising such a cable (11) is provided.Type: GrantFiled: November 22, 2002Date of Patent: August 10, 2010Assignee: NV Bekaert SAInventors: Bert Vanderbeken, Paul Bruyneel, Luc Dalez, Albert Somers, Daniël Mauer
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Patent number: 7585562Abstract: To improve tensile strength without impairing flexibility and adhesion to concrete, and to form a thick coating in a surface layer part for preventing a basis material from being exposed by damage to the coating, a method of forming double coatings on a prestressing strand includes a primary painting process after a pre-treatment process, in which a resin coating is formed only at the surface layer, a secondary painting process in which respectively individual state resin coating is formed on an outer peripheral face of each of the core wire and surrounding wires under a loosened and separated state, thereby forming a double coating for each surrounding wire, and a finishing process of tightening and retwisting the surrounding wires about the core wire to an original state. The obtained prestressing strand has the double coating portions only at the surface layer and sufficient flexibility and adhesion to concrete.Type: GrantFiled: February 12, 2007Date of Patent: September 8, 2009Assignee: Kurosawa Construction Co., Ltd.Inventors: Takeshi Hasui, Takatsugu Fujikawa
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Patent number: 7228681Abstract: A steel cord adapted for the reinforcement of elastomers includes: a core steel filament with a diameter dc and coated with a polymer, six intermediate steel filaments with a diameter di smaller than or equal to dc, the intermediate steel filaments being twisted around the core steel filament, ten to eleven outer steel filaments with a diameter do, smaller than or equal to di wherein these outer steel filaments are twisted around the intermediate steel filaments, and the outer steel filaments are preformed in order to allow rubber penetration inside the cord. The core steel filament, the intermediate steel filaments, and the outer steel filaments all have a tensile strength of at least 2600 MPa. The cord has an outer diameter D according to the following formula: D?dc+2×di+2×do+0.1 mm, wherein all diameters are expressed in millimeters (mm).Type: GrantFiled: June 25, 2004Date of Patent: June 12, 2007Assignee: NV Bekaert SAInventors: Dirk Meersschaut, Stijn Vanneste, Hans Cauwels
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Patent number: 7036298Abstract: An elevator rope includes: an inner layer rope; an inner layer covering body of resin and covering the outer periphery of the inner layer rope; an outer layer located in the outer periphery of the inner layer covering body; and an outer layer covering body of a high-friction resin material and covering the outer periphery of the outer layer. The inner layer rope has inner layer strands. The outer layer has outer layer strands and adhesive layers glued to the outer periphery of the outer layer strands. The inner layer strands have exposed portions partially exposed through the outer periphery of the inner layer covering body, with the exposed portions being in direct contact with the outer layer.Type: GrantFiled: June 27, 2002Date of Patent: May 2, 2006Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Takenobu Honda
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Patent number: 6811877Abstract: A reinforcing structure designed for handling compression stress states when the structure is molded into a composite. The structure, specifically a wrapped cord with metallic filaments contained therein, is suitable for both compression and tension load forces. The reinforcing structure has a core comprising a plurality of essentially straight, nested filaments arranged in parallel, the filaments forming a line of contact with adjacent filaments that extends along the length of the filaments. Wrapped about the core is at least one helically wound wire.Type: GrantFiled: February 21, 2003Date of Patent: November 2, 2004Assignee: The Goodyear Tire & Rubber CompanyInventors: Gary Allen Haislet, George C. Tunis, III, Emmanuel Albert Gooding
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Patent number: 6779330Abstract: An antimicrobial, cut-resistant composite yarn which has a core member including at least one cut-resistant strand, a cover member including at least one strand wrapped around and enclosing the core member, wherein at least one strand in either the core member or the cover member is treated with and incorporates an antimicrobial compound. The yarn can be used to fabricate cut-resistant garments, such as gloves, worn by meat cutters and others who work with knives, saws and other sharp implements. The antimicrobial effect reduces bacteria, mold and fungi growth on the garments between washings.Type: GrantFiled: October 31, 2000Date of Patent: August 24, 2004Assignee: World Fibers, Inc.Inventors: Dean Riley Andrews, Gregory V. Andrews, John D. Simmons
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Publication number: 20030145936Abstract: The present invention relates to a cable bead, the method of constructing the cable bead and a tire constructed by a process incorporating the cable bead wherein the cable bead is formed with a bead core wound from a single filament of bead core wire having a rubber or elastomeric coating, first annular wrap of bead wrapping wire helically wound around the bead core, and a coating of lubricant or fatty acid disposed about the bead core.Type: ApplicationFiled: January 22, 2003Publication date: August 7, 2003Inventors: Richard Nicholas Hrycyk, Donald Chester Kubinski, Warren Paul Ripple
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Publication number: 20030138629Abstract: A yarn (21) comprising polymer or natural fibers (25) and one or more consolidated machined metal fiber (22) bundles is provided. The yarn is characterized in that the consolidated machined metal fiber bundles (22) are substantially surrounded by the polymer or natural fibers (25). Further the use of a textile fabric out of these yarns as a gas burner membrane is described.Type: ApplicationFiled: October 17, 2002Publication date: July 24, 2003Inventor: Gabriel Dewaegheneire
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Patent number: 6412264Abstract: A low stretch elevator rope (10) is obtained in which a plastic core (12) has a central strength member (18) that does not increase the weight of the rope by more than 5%. Moreover, the plastic core (12) has a diameter exceeding 50% of the diameter of the rope (10), when measured prior to winding steel strands (14) onto the core (12). The steel strands (14) that are wound around the core (12) are conventional and are so wound that the plastic material of the core (12) essentially fills the inner interstices (16) between the steel strands (14).Type: GrantFiled: August 16, 2001Date of Patent: July 2, 2002Assignees: Wire Rope Industries Ltd., Industrie de Cables d'Acier LteeInventors: Brigitte De Josez, Joseph Misrachi, Olivier Payant
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Patent number: 6385957Abstract: A wire rope is disclosed, which has at most 18 outer strands and an independent wire rope core, with the strands of the core being laid in the opposite direction to the outer strands of the rope, and a nylon jacket is provided between the core and the outer strands of the wire rope.Type: GrantFiled: February 9, 2001Date of Patent: May 14, 2002Assignee: Wire Rope Industries Ltd.Inventor: Joseph Misrachi
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Patent number: 6360522Abstract: A filler element is located between each adjacent pair of outer strands of a wire rope and interlocks with the adjacent strands. The filler elements provide the rope with substantially smooth outer surface reducing vibration of the rope passing over a pulley. Filler elements are disclosed consisting of an elastometic or polymeric material having an oriented molecular structure aligned along the filler element and also aligned in a generally radial direction with respect to the rope.Type: GrantFiled: August 16, 2000Date of Patent: March 26, 2002Assignee: Bridon PLCInventor: John Mawson Walton
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Publication number: 20020002815Abstract: A wire rope (10) includes a plurality of strands (12). The strands are formed from individual wires or filaments (14). The strands are wound about a central axis. A conduit (16) also extends along said central axis. The conduit has walls that are foraminous and permit radial flow of a lubricant. The lubricating compound is injected into the channel (18) defined by the conduit. The lubricating material migrates through the orifices in the conduit wall and radially outwardly therefrom.Type: ApplicationFiled: May 29, 2001Publication date: January 10, 2002Applicant: UTILX CorporationInventors: Glen J. Bertini, Glenn S. Jessen
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Patent number: 6327842Abstract: The present invention relates to a metallic cord for the reinforcement of elastomers. The cord has (a) a core composed of two filaments, (b) a single filament surrounding said core and (c) a sheath of nine filaments surrounding said core and single filament.Type: GrantFiled: August 21, 2000Date of Patent: December 11, 2001Assignee: The Goodyear Tire & Rubber CompanyInventor: Thomas Walter Starinshak
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Patent number: 6146760Abstract: Steel reinforcing cords (36) having four or more filaments (38, 40, 42 and 44) in two groups, one twisted and the other untwisted with a filament tensile strength TS equal to K.sub.1 -K.sub.2 D where K.sub.1 =4080N/mm.sup.2, and D is a filament diameter in mm to form cords with a break load equal to N(720.40D.sup.2 -352.6D.sup.3 ; CE is the cord efficiency, D is the filament diameter in millimeters and N is the number of filaments.Type: GrantFiled: June 20, 1997Date of Patent: November 14, 2000Assignee: The Goodyear Tire & Rubber CompanyInventors: Farrel Bruce Helfer, Dong Kwang Kim, Robert Martin Shemenski, Italo Marziale Sinopoli, Guy Jeanpierre, Gia Van Nguyen
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Patent number: 5749681Abstract: A high tensile steel strand for civil engineering applications comprises a core wire (11) and a ring of outer wires (12) arranged in a helical pattern around the core wire and in contact with the core wire. The number and the diameter of the outer wires in relation to the core wire are such that there are significant gaps (13) between adjacent outer wires. The strand is used as an anchorage in rock and a bonding agent between the strand and the rock penetrates gaps (13) to provide effective bonding. The strand is sufficiently flexible to be inserted in deep bores in rock even when surrounding space does not permit straight insertion of the strand.Type: GrantFiled: October 7, 1996Date of Patent: May 12, 1998Assignee: Edgar Allen Engineering LimitedInventors: Jeffrey Doidge, Terence Cassidy
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Patent number: 5749211Abstract: A fiber-reinforced plastic bar comprises a core and a surface member, the core comprises a high strength continuous fiber and a matrix resin, and the surface member comprises a polypropylene fiber. This fiber-reinforced plastic bar does not undergo degradation even when mortar, concrete, etc, are cured in an autoclave.Type: GrantFiled: July 1, 1996Date of Patent: May 12, 1998Assignees: Nippon Steel Corporation, Nippon Steel Chemical Co., Ltd.Inventors: Hiromi Kimura, Kanji Yamada, Yasuhiro Hirato
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Patent number: 5592806Abstract: A steel cord (10) adapted for the reinforcement of elastomeric articles including a center structure of one to five center filaments (16) and a maximum of two layers of layer filaments surrounding said center structure: an outer layer of outer layer filaments (12, 13) and optionally, an intermediate layer of intermediate layer filaments (24) between the center structure and the outer layer. All the center filaments (16) and all the layer filaments (12, 13, 24) have the same twist hand and have the same twist pitch. The outer layer filaments (12, 13) exert a force which is directed radially inward.Type: GrantFiled: February 20, 1996Date of Patent: January 14, 1997Assignee: N.V. Bekaert S.A.Inventors: Joost Berghmans, Johan De Waegenaere, Pierre Klingeleers, Frans Van Giel
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Patent number: 5436076Abstract: The present invention relates to a composite cord for reinforcing rubber comprising an organic chemical fiber cord and a high-carbon steel fine wire used by being buried in the rubber, for reinforcing rubber products such as various kinds of tires and conveyor belts. The composite cord comprises an organic chemical fiber cord wrapped by brass plated high-carbon steel fine wire.Type: GrantFiled: September 30, 1994Date of Patent: July 25, 1995Assignee: Sumitomo Electric Industries, Ltd.Inventors: Hidekazu Nakata, Kenichi Okamoto, Akira Nagamine
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Patent number: 5288270Abstract: A flexible shaft has an inner shaft with a steel core wire and element wire groups which are formed by closely adhering a plurality of steel element wires into band shapes wound around the steel core wire by turns in reverse directions relative to each other. The plurality of element wire groups are formed in layers and in concentric sections. Lubricant is impregnated in clearances between the plurality of steel element wires.Type: GrantFiled: October 19, 1992Date of Patent: February 22, 1994Assignee: Taisei Kohzai Kabushiki KaishaInventor: Yoshiaki Ishikawa
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Patent number: 5175989Abstract: A device is described which prevents, during deployment of an ocean cable system, torque build-up in a heavy armor cable section from being abruptly applied to a next-connected light armor cable section. A set of helically-wound steel armor rods rigidly attached to the heavier cable section form a tube-like extension over the first several feet of the lighter cable. The rods resist rotation because of their frictional contact with the cable engine drum. The enveloped cable within the rod-tube device accordingly rotates only as much as the tube. The torque-induced rotation that does occur is well within that safely permitted per unit cable length.Type: GrantFiled: June 29, 1990Date of Patent: January 5, 1993Assignee: AT&T Bell LaboratoriesInventor: Frank D. Messina
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Patent number: 5173982Abstract: A corrosion protection system for bridge stay cables comprising the immersion of the bridge stay cables in a corrosive resistant liquid retained within a corresponding cable sheath to isolate the bridge stay cables from the surrounding atmosphere, a liquid flow control device corresponding to each cable sheath to selectively drain condensation or purge the corrosive resistant liquid from the respective cable sheaths and a liquid supply reservoir corresponding to each cable sheath to selectively feed the corrosive resistant liquid to and from the corresponding cable sheath in response to changes in the temperature in the surrounding atmosphere, the system having the unique capability of providing a verifiable corrosion protection system for the stay cables.Type: GrantFiled: July 25, 1991Date of Patent: December 29, 1992Assignee: Greiner Inc, SouthernInventors: Thomas G. Lovett, Steven L. Stroh
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Patent number: 5061557Abstract: One or more plies of reinforced elastomer, particularly two plies (10),(12) of rubber reinforced with twisted filament metallic cords (14) and more particularly a tire belt made up of the two plies (10),(12) is disclosed having cords (14) of 2x.30HT construction with opposed 23.degree. angles to the direction of reinforcement of the belt.Type: GrantFiled: June 6, 1989Date of Patent: October 29, 1991Assignee: The Goodyear Tire & Rubber CompanyInventors: Kenneth M. Kot, Byung-Lip Lee
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Patent number: 4956039Abstract: A cable-like synthetic composite body which can be used as a support element for technical cables comprises a string of endless filaments of high modulus of elasticity which extend parallel to one another and to the cable axis, with the string being impregnated with a first thermoplastic material (12) in the form of a hot melt adhesive. The string (11') which is held together in this way is then sleeved by extrusion with the second thermoplastic material (13) which is filled with staple fibers (23) of a high modulus of elasticity. A sleeve of a third thermoplastic material (14) is then applied by means of extrusion onto the sleeve layer.Type: GrantFiled: May 10, 1988Date of Patent: September 11, 1990Assignee: Roblon A/SInventors: John Olesen, Jorgen Jorgensen
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Patent number: 4870814Abstract: A process is disclosed for manufacturing corrosion resistant cable. In the process, a corrosion resistant, organic based, alkyl silicate-zinc coating solution is applied to wire as the wire is twisted into cable. The solution dries on the wire in air, leaving an inorganic silicate-zinc coating on the wire. The cable is then coated with a plastic. The process is particularly useful for manufacturing brake cables.Type: GrantFiled: April 29, 1988Date of Patent: October 3, 1989Assignee: Orscheln Co.Inventors: Tharayil Chacko, Wayne Soucie, Elroy J. Tauer, Robert Heimann
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Patent number: 4856414Abstract: A method of packing elongated porous bodies moved between zones of different pressure, wherein the porous body (T) reciprocates through a pressurized packing agent (M). The packing agent is thixotropic and is supplied continuously to the porous cable (T) under a pressure exceeding the pressure in a higher pressure zone (P.sub.1) while the porous body (T) is impregnated with a thixotropic packing agent (M) such that the cross-section of the cable, throughout its entire length, is filled with packing agent (M). A hydraulic cylinder-type actuator utilizes a porous cable power transmission element packed in a chamber (7) filled with viscoelastoplastic material and communicated with means designed to develop in said chamber a pressure exceeding the pressure of the actuator working fluid.Type: GrantFiled: December 19, 1985Date of Patent: August 15, 1989Assignee: Upravlenie po Montazhu, Demontazhu i Remontu Gornoshakhtnogo Oborudovania "Spetsshakhtomontazh" Karagandinskogo Proizvodstvennogo Obiedinenie po Dobyche Uglya "Karagandaugol"Inventors: Vladimir G. Churkin, Sergei B. Negrutsky, Sergei B. Klimov, Boris F. Negrutsky
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Patent number: 4849282Abstract: An elongated prestressing steel material for use in the fabrication of prestressed concrete comprises a steel member and an outer coat of many microcapsules each containing a flowable material in its interior.Type: GrantFiled: June 15, 1987Date of Patent: July 18, 1989Assignee: Sumitomo ElectricInventors: Kanji Watanabe, Mikio Mizoe
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Patent number: 4813221Abstract: A flexible tension member for structural applications comprises twenty or more high strength rods (R) bundled helically with a lay length 20 to 150 times overall diameter, the rod (R) upon introduction being substantially free from curvature resulting in slackness in the bundle and introduced without flexural stresses significantly exceeding the yield point of the rod structure. The invention may utilize rods of solid circular or non-circular cross-section, or tubular and formed of metal, e.g., steel, and/or non-metallic material, more particularly fibre reinforced plastics, and results in a smooth uniform appearance, with good integrity and no signs of slackness despite the unusually long lay length employed.Type: GrantFiled: December 7, 1987Date of Patent: March 21, 1989Assignee: Bridin plc.Inventors: Philip Christian, John M. Walton
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Patent number: 4776161Abstract: An unbonded PC steel strand used for posttensioning concrete comprising a PC steel strand composed of a plurality of stranded wires, a thin transparent lacquer coating on the outer surface of the PC steel strand, the lacquer coating being able to be broken when the PC steel strand is subjected to tension or posttensioning concrete, a filler applied around the lacquer coating, and a synthetic resin sheath covering the lacquer and filler coated PC steel strand. A method of manufacturing the unbond PC steel strand comprising steps of annealing the PC steel strand at a low temperature to remove strain, coating the outer surface of the PC steel strand with lacquer, applying a greaselike corrosion inhibitor to the surface of this lacquer coating, and sheating the coated PC steel strand with an outer synthetic resin sheath.Type: GrantFiled: November 18, 1985Date of Patent: October 11, 1988Assignee: Kawasaki Steel CorporationInventors: Syuzo Sato, Masamitsu Takei, Shigeo Shoji
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Patent number: 4756151Abstract: A reinforcement assembly to be impregnated with a plastic or rubber material for reinforcing an article, such as a pneumatic tire, the assembly having three layers of cords: a core layer, an intermediate layer and an outer layer. The intermediate layer and the outer layer have the same direction of winding and the same pitch. When the core layer is wound in the same direction as the intermediate layer, the pitches of these layers differ in such a manner that the ratio between the difference in the values of these two pitches and the larger value of these two pitches is at least equal to 0.30. In the intermediate layer the axis of each cord is arranged along a helix such that the ratio between the radius of curvature of said helix and the diameter of said cord is less than 75.Type: GrantFiled: September 9, 1987Date of Patent: July 12, 1988Assignee: Compagnie Generale des Etablissements MichelinInventor: Jean-Louis Charvet
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Patent number: 4667462Abstract: A method is provided for making a plastic-filled wire rope by preheating a lubricated wire rope to a temperature close to the melting point of the plastic material with which the rope is to be filled, and then injecting the plastic material in molten state under heat and pressure into the wire rope so as to fill essentially completely the interstices between the strands and the individual wires, while displacing and removing most of the lubricant initially present within the rope. The obtained novel plastic-filled, lubricated wire rope has improved wear and fatigue resistance as well as increased life.Type: GrantFiled: April 25, 1986Date of Patent: May 26, 1987Assignee: Wire Rope Industries Ltd.Inventor: Laurence C. Smyth
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Patent number: 4661387Abstract: A prestressing steel material for use with concrete that is prestressed by posttensioning is disclosed. Said steel material is unbonded from the concrete. The prestressing steel material is composed of a steel member sheathed with a foamed synthetic resin tube. The wall thickness of the synthetic resin tube is at least 300 microns, more preferably, more than 500 microns. In the case that the steel member is a strand composed of a plurality of twisted steel wires, the spiral grooves of the strand are first filled with a resin and the strand together with the resin sheathed with the foamed synthetic resin tube.Type: GrantFiled: December 14, 1984Date of Patent: April 28, 1987Assignee: Sumitomo Electric Industries, Ltd.Inventors: Kanji Watanabe, Mikio Mizoe
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Patent number: 4651513Abstract: A steel cord for reinforcing rubber products such as truck tires comprises a plurality of steel wires twisted together to form a multiwire layered cable construction having two or more successive wire layers around a common core. The wires of the outer layer are covered by a rubber adherable coating of, e.g. brass, and the wires (shaded) of the layer inwardly adjacent the surface layer are covered by a corrosion resistant coating, such as zinc or a zinc alloy.Type: GrantFiled: September 24, 1985Date of Patent: March 24, 1987Assignee: N.V. Bekaert S.A.Inventor: Paul Dambre
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Patent number: 4606183Abstract: A wire rope including a core surrounded with a plurality of wound strands. The rope is encapsulated with a thermoplastic after the application of a lubricant blend including amorphous polypropylene.Type: GrantFiled: November 20, 1984Date of Patent: August 19, 1986Assignee: AMSTED Industries IncorporatedInventor: Peter P. Riggs
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Patent number: 4602476Abstract: A wire rope is provided having a central core strand about which are wound outer strands. Non-linear spacer wires are present in the gaps between outer strands to assure the uniformity of such gaps and provide passageways from the interior to the exterior of the wire rope. A coating, usually of a suitable thermoplastic, is extruded into such rope to extend continuously from the core and between adjacent outer strands and through the passageways.Type: GrantFiled: December 3, 1984Date of Patent: July 29, 1986Assignee: AMSTED Industries IncorporatedInventors: Peter P. Riggs, Harry L. Data
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Patent number: 4550559Abstract: A cable comprises at least one layer of strands (10) with each strand covered with an individual sheath (20) of rubber or plastics material. The sheaths are so shaped (16, 17, 18) that the sheaths of adjacent strands interlock. This provides a layer in which the strands have a generally fixed spatial relationship both to each other and within the cable. This reduces inter-strand forces, so increasing cable life, and also provides a dimensionally stable cable.Type: GrantFiled: September 1, 1983Date of Patent: November 5, 1985Assignee: Cable Belt LimitedInventor: Ian M. Thomson
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Patent number: 4534162Abstract: A wire rope is provided having a central core strand about which are wound outer strands. Spacer strands are present in the gaps between such core strand and outer strands to assume the uniformity of such gaps. A coating, usually of a suitable thermoplastic, is extruded into such rope to provide a spacer between such core and such outer strands, and between adjacent outer strands.Type: GrantFiled: August 8, 1983Date of Patent: August 13, 1985Assignee: AMSTED Industries IncorporatedInventors: Peter P. Riggs, Harry L. Data, Robert B. Hoganson, Jr.
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Patent number: 4490969Abstract: The present invention provides a method of manufacturing a thermoplastic encapsulated wire rope. Such thermoplastic encapsulated wire rope is quenched in a lubricant bath or spray to fill any openings in the thermoplastic with lubricant. The wire rope so produced is also part of the present invention.Type: GrantFiled: March 25, 1983Date of Patent: January 1, 1985Assignee: AMSTED Industries IncorporatedInventors: Neville H. Simpson, Thomas H. Dosemagen, David E. Dirks
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Patent number: 4487010Abstract: The present invention provides a wire rope comprising an inner layer of at least four separate wire strands and an outer layer of at least eight separate wire strands, parallel laid. The strands themselves are usually of parallel lay and are usually lubricated. A thermoplastic or an elastomer usually surrounds the inner layer strands and extends between the inner layer strands and the outer layer strands and between the outer layer strands.Type: GrantFiled: February 18, 1983Date of Patent: December 11, 1984Assignee: AMSTED Industries IncorporatedInventors: Ferdinand Chiappetta, John H. Simpson, Neville H. Simpson
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Patent number: 4470249Abstract: A wire rope comprising an outer rope layer and an inner rope layer of wire strands is provided. The inner rope layer itself is comprised of multiple layers, usually in a parallel laid, coreless arrangement. The inner and outer rope layers are contrahelically laid and are usually lubricated. A thermoplastic or elastomer can be utilized to encapsulate the lubricant within the inner rope layer or within both the inner and outer rope layers.Type: GrantFiled: February 18, 1983Date of Patent: September 11, 1984Assignee: AMSTED Industries IncorporatedInventors: Ferdinand Chiappetta, Neville H. Simpson, John H. Simpson