Strand Structure Patents (Class 57/200)
  • Patent number: 7067002
    Abstract: The present invention relates to a fibrous construct which is used in providing cementitious mixtures supplemental and reinforcing strength upon setting, and more particularly, to a unitized fibrous construct which comprises a plurality of oriented reinforcing fibrous components, wherein the fibrous components can be cut to a predetermined and finite cut length upon formation and remain in a plural parallel form until such point the unitized fibrous substrate is incorporated and subjected to mechanical agitation during preparation of a cementitious blend or mixture.
    Type: Grant
    Filed: January 23, 2004
    Date of Patent: June 27, 2006
    Assignee: Polymer Group, Inc.
    Inventors: Paul Schmidt, Gene Lamb, David Anderson
  • Patent number: 7066229
    Abstract: A pneumatic tire comprises a cord-reinforced layer such as carcass, belt, bead reinforcing layer which is made of metallic cords, each metallic cord is made up of six to twelve metallic filaments whose diameter is in a range of from 0.15 to 0.45 mm, the metallic filaments include waved filaments and unwaved filaments, each waved filament is two-dimensionally waved at a wave pitch and wave height before twisted, the wave pitch is in a range of from 5.0 to 35.0 times the diameter of the filament, and the wave height is in a range of from 0.2 to 4.0 times the diameter of the filament, and the metallic filaments are twisted together into the cord at a twist pitch of from 10 to 40 mm so that the two-dimensionally waved filaments are each subjected to a certain rotation around its axial.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: June 27, 2006
    Assignees: Sumitomo Rubber Industries, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Shinichi Miyazaki, Kazumi Yamazaki, Osamu Toda, Yasuo Sakai
  • Patent number: 6959745
    Abstract: A steel cord is composed of three to six steel filaments each having a filament diameter of from 0.25 to 0.45 mm, the three to six steel filaments including shaped filaments and twisted together, wherein the shaped filaments are, before twisted together, coiled to be set in a form of coil having a coil diameter of less than 5 mm and a coil pitch of more than 5 mm, the shaped filaments include at least two kinds of shaped filaments which are different in respect of the form of coil, the shaped filaments are twisted together while the coil diameter is reduced, the elongation of the cord at 50 N load is less than 0.2%, and the cord strength is in a range of from 2500 to 3500 N/sq.mm.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: November 1, 2005
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Shinichi Miyazaki, Kazumi Yamazaki, Osamu Toda
  • Patent number: 6916533
    Abstract: The invention relates to a highly oriented polyolefin fiber containing polyolefin with an intrinsic viscosity of at least 5 dl/g, which fiber has a tensile strength of at least 26 cN/dtex and a modulus of tension of at least 700 cN/dtex, a process for the preparation thereof and the use in ropes or anti-ballistic shaped articles. The invention also relates to improved ropes and anti-ballistic shaped articles. The highly oriented polyolefin fiber according to the invention has improved properties in applications such as, in particular, anti-ballistic shaped articles since the fiber contains 0.05-5 wt. % of a solvent for the polyolefin (relative to the total fiber weight).
    Type: Grant
    Filed: February 20, 2004
    Date of Patent: July 12, 2005
    Assignee: DSM IP Assets B.V.
    Inventors: Joseph A. P. M. Simmelink, Jacobus J. Mencke
  • Publication number: 20040226277
    Abstract: A sheathed yarn having a natural appearance comprises a core yarn and a sheath which is made from a thermoplastic material. The thermoplastic material of the sheath comprises less than 20 wt.-% of staple fibers.
    Type: Application
    Filed: June 23, 2004
    Publication date: November 18, 2004
    Applicant: Tissage et Enduction Serge Ferrari SA
    Inventors: Eric Bourbon, Andre Ravachol, Romain Ferrari
  • Patent number: 6770362
    Abstract: High strength polyethylene fibers and their applications, for example, chopped fibers, ropes, nets, ballistic materials or items, protective gloves, fiber reinforced concrete products, helmets, and other products obtained therefrom, in which the fiber is characterized in that: it contains a high molecular weight polyethylene consisting essentially of a repeating unit of ethylene; it has an intrinsic viscosity number of 5 or larger and an average strength of 22 cN/dtex or higher; and the measurement of the fiber by differential scanning calorimetry (DSC) exhibits a temperature-increasing DCS curve having at least one endothermic peak over a temperature region of 140° C. to 148° C. (on the low temperature side) and at least one endothermic peak over a temperature region of 148° C.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: August 3, 2004
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventor: Takayoshi Okano
  • Patent number: 6755226
    Abstract: A composite cord is provided which is simple in manufacture, highly productive, less costly, and improved in rubber penetration. The composite cord has a 1×n construction (n is an integer from 3 to 12) with 2 to 11 metallic filaments and 1 to 5 polymer fibers having a melting point of 50 to 200 degrees twisted together. The pneumatic tire employing this composite cord for its reinforcing element is restricted in rust formation and improved in strength retention.
    Type: Grant
    Filed: February 1, 2001
    Date of Patent: June 29, 2004
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Shinichi Miyazaki, Osamu Toda
  • Publication number: 20040079067
    Abstract: [OBJECT] An oil-tempered wire for a cold-formed coil spring having a quality equivalent of or higher than a hot-formed coil spring is provided. A cold-formed coil spring made from the oil-tempered wire is also provided.
    Type: Application
    Filed: March 12, 2003
    Publication date: April 29, 2004
    Applicant: Chuo Hatsujo Kabushiki Kaisha
    Inventors: Hidetoshi Yoshikawa, Tomohiro Nakano, Takayuji Sakakibara, Masami Wakita
  • Patent number: 6708479
    Abstract: The present invention relates to a braiding yarn made of expanded graphite for a gland packing which is to be used in a shaft seal part of a fluid apparatus or the like. In the braiding yarn made of expanded graphite of the invention, a braiding yarn base material of the inner-reinforce type is used in which a plurality of reinforcing fibers are embedded in the longitudinal direction in an expanded graphite tape of a predetermined width, with forming gaps in the width direction. A twisting process is performed in a state where both the end portions in the width direction of the expanded graphite tape are bent so that both the end portions in the width direction of the expanded graphite tape are directed toward the inner side in the width direction of the base material. Alternatively, while twisting the base material both the end portions in the width direction of the expanded graphite tape are bent so that both end portions in the width direction are directed toward the inner side in the width direction.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: March 23, 2004
    Assignee: Nippon Pillar Packing Co., Ltd.
    Inventors: Masaru Fujiwara, Takashi Ikeda
  • Patent number: 6695026
    Abstract: A pneumatic tire comprises a tread reinforcing belt made of metallic cords, each of the metallic cords is made up of six to twelve metallic filaments whose diameter is not less than 0.15 mm but less than 0.25 mm, the six to twelve metallic filaments are grouped into a plurality of bunches each including two to four filaments, the filaments of each bunch are twisted together at a first twisting pitch, the bunches are twisted together into the cord at a final twist pitch Pc of from 10 to 40 mm, the first twisting pitch is more than the final twist pitch, and the bunches each include at least one waved filament which is two-dimensionally waved at wave pitches Pw in a range of from 5 to 30 times the diameter (d) of the filament and a wave height (h) in a range of from 0.2 to 3.0 times the diameter (d).
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: February 24, 2004
    Assignees: Sumitomo Rubber Industries, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Shinichi Miyazaki, Kazumi Yamazaki, Osamu Toda, Yasuo Sakai
  • Publication number: 20030226346
    Abstract: Continuous process for the mercerizing of yarns effected on the yarn in the form of a bundle, introduced into one or more tubular reactors with an ejection nozzle fed as driving fluid under pressure with the mercerizing solution and then drawn in continuous in one or more drawing units.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 11, 2003
    Inventors: Roberto Badiali, Mario Minuti
  • Publication number: 20030209002
    Abstract: The invention provides a profiled polymer filament having an open hollow cross-sectional shape normal to the longitudinal axis of the filament, wherein the cross-section is dimensioned to prevent the filament from interlocking with a second filament of the same cross-section. The invention also provides methods of manufacture of such filaments by melt spinning a polyamide, and spinnerets suitable for use in melt spinning such filaments.
    Type: Application
    Filed: January 16, 2003
    Publication date: November 13, 2003
    Inventor: Peter Michael Lancaster
  • Patent number: 6644007
    Abstract: The present invention relates to a braiding yarn made of expanded graphite for a gland packing which is to be used in a shaft seal part of a fluid apparatus or the like. In the braiding yarn made of expanded graphite of the invention, an expanded graphite tape of a predetermined width is folded into a valley fold in the longitudinal direction, both end portions in the width direction of the expanded graphite tape are bent so as to be directed toward the inner side of the width direction of the expanded graphite tape, and the outer periphery of the tape is covered by a reinforcing member configured by a braided body of stainless steel wires. The expanded graphite tape may be twisted. Reinforcing fibers may be embedded in the expanded graphite tape. Part of expanded graphite particles on the side of the surface of the expanded graphite tape may be removed away.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: November 11, 2003
    Assignee: Nippon Pillar Packing Co., Ltd.
    Inventors: Masaru Fujiwara, Takahisa Ueda
  • Patent number: 6637181
    Abstract: Described is a process for producing segmented polyurethanes having improved processing characteristics in the melt state and an efficient spinning process based thereon to form highly elastic, fine linear density elastane yarn and filament having improved mechanical and thermal properties by using hydroxyalkyl-terminated polysiloxanes in combination with specific crosslinking-capable polyisocyanates in the reaction of long-chain high molecular weight polyhydroxy compounds with organic diisocyanates and low molecular weight diols and also optionally further auxiliary and additive substances in the melt.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: October 28, 2003
    Assignee: Bayer Aktiengesellschaft
    Inventors: Siegfried Korte, Rolf-Volker Meyer, Stefan Hütte
  • Patent number: 6623585
    Abstract: The present invention provides a process whereby high quality, well-coalesced spandex can be made by dry-spinning a high-melting thermoplastic polyurethane, bundling the as-spun filaments into a side-by-side relationship, and passing the bundled filaments over or through a guide. The spandex made by this method has high-heat settability, high denier uniformity, good knittability and weavability, and provides fabrics having good surface uniformity.
    Type: Grant
    Filed: February 23, 2001
    Date of Patent: September 23, 2003
    Assignee: DuPont-Toray Co. Ltd.
    Inventors: Masao Umezawa, Hideki Nakanishi, Toshikazu Matsuda
  • Patent number: 6612354
    Abstract: A pneumatic tire comprises a cord-reinforced layer such as carcass, belt, bead reinforcing layer which is made of metallic cords, each metallic cord is made up of six to twelve metallic filaments whose diameter is in a range of from 0.15 to 0.45 mm, the metallic filaments include waved filaments and unwaved filaments, each waved filament is two-dimensionally waved at a wave pitch and wave height before twisted, the wave pitch is in a range of from 5.0 to 35.0 times the diameter of the filament, and the wave height is in a range of from 0.2 to 4.0 times the diameter of the filament, and the metallic filaments are twisted together into the cord at a twist pitch of from 10 to 40 mm so that the two-dimensionally waved filaments are each subjected to a certain rotation around its axial.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: September 2, 2003
    Assignees: Sumitomo Rubber Industries, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Shinichi Miyazaki, Kazumi Yamazaki, Osamu Toda, Yasuo Sakai
  • Patent number: 6601377
    Abstract: The present invention relates to gland packing materials made from expansive graphite, gland packing made from expansive graphite made from the materials, and a producing method of gland packing made from expansive graphite; braiding thread is a filamentose with winding or twisting a strip laminated sheet that a bundle of sprit fiber is laminated and unified through an adhesive layer so as to be a reinforcing material, and a cord body is constructed by braiding the braiding thread, then a packing is constructed by pressure forming this cord body.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: August 5, 2003
    Assignee: Japan Matex Kabushiki Kaisha
    Inventor: Katsuro Tsukamoto
  • Patent number: 6592716
    Abstract: Security fibers having enhanced antifalsification features are prepared by a process which comprises the steps of: i) braiding 5 to 30 denier fibers to form a twine; ii) dyeing the twine with a dye or pigment; iii) drying the dyed twine; and then iv) cutting the dried twine to give the security fibers in the form of cut fibers.
    Type: Grant
    Filed: September 1, 2000
    Date of Patent: July 15, 2003
    Assignee: Korea Security Printing and Minting Corporation
    Inventors: Jong-Kyu Kim, Yong-Hwan Park
  • Publication number: 20030116248
    Abstract: A metal cord for reinforcing rubber articles and a pneumatic tire including metal cords to reinforce tire components such as carcass, breaker and band are disclosed, wherein a metal cord according to one aspect of the present invention comprises filaments having a tensile strength of from 4000 to 5500 N/sq.mm and a diameter of from 0.10 to 0.35 mm and the filaments are twisted together, the filaments before twisted are two-dimensionally waved so that the elongation after fracture of the cord becomes in a range of from 2 to 6%. According to another aspect of the present invention, the metal cord is a single filament having a tensile strength of from 4000 to 5500 N/sq.mm and a diameter D of from 0.10 to 0.35 mm, and the filament is two-dimensionally waved so that the elongation after fracture becomes in a range of from 2 to 6%.
    Type: Application
    Filed: November 22, 2002
    Publication date: June 26, 2003
    Inventors: Shinichi Miyazaki, Osamu Toda
  • Patent number: 6530205
    Abstract: A method of and an apparatus for making twisted electrical cable, such as 600 volt secondary distribution (UD) cable, and the twisted cable product are disclosed. The apparatus comprises a first plurality of stationary payoff reels each wound with a length of stranded bare wire conductor. The stranded conductors are simultaneously payed off the reels to a pay out accumulator for accumulating a portion of the stranded conductors during replacement of spent pay out reels. An extruder apparatus arranged downstream of the accumulator applies a plastic insulation material to a respective stranded conductor as it passes through the extruder. A cooling trough through which water is flowed cools the plastic insulation. A take-up accumulator arranged downstream of the cooling trough accumulates a portion of each insulated conductor during changeover of the take-up arranged downstream of the take-up accumulator.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: March 11, 2003
    Assignee: Southwire Company
    Inventors: Bobby C. Gentry, Jerry M. Hesterlee, Clinton E. Watkins, James H. Sullivan
  • Patent number: 6502382
    Abstract: An expanded graphite knitting yarn according to the present invention is covered or bound and covered with a reinforcing material made of a braided body such as stainless steel line members, before an outer periphery of an expanded graphite tape having a predetermined width, which has been subjected to a twisting process, is braided. Therefore, an amount of the expanded graphite particles exfoliated from ends of the expanded graphite tape in the twisting process can be significantly reduced. Moreover, this can prevent the expanded graphite particles from being exfoliated from the end of the expanded graphite tape in a braiding process. Furthermore, the plural expanded graphite knitting yarns are put together and subjected to either braiding or twisting process, thereby forming a gland packing. This can enhance a sealing property and a pressure resistance property of the gland packing.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: January 7, 2003
    Assignee: Nippon Pillar Packaging Co., Ltd.
    Inventors: Masaru Fujiwara, Takahisa Ueda
  • Publication number: 20020069635
    Abstract: The present invention relates to gland packing materials made from expansive graphite, gland packing made from expansive graphite made from the materials, and a producing method of gland packing made from expansive graphite; braiding thread is a filamentose with winding or twisting a strip laminated sheet that a bundle of sprit fiber is laminated and unified through an adhesive layer so as to be a reinforcing material, and a cord body is constructed by braiding the braiding thread, then a packing is constructed by pressure forming this cord body.
    Type: Application
    Filed: July 30, 2001
    Publication date: June 13, 2002
    Applicant: Japan Matex Kabushiki Kaisha
    Inventor: Katsuro Tsukamoto
  • Patent number: 6393817
    Abstract: Machine for combining an elastomer thread (81) with an unextendable thread (11) wound on respective spools (80,10), which comprises a first pair (20) of rollers for driving the unextendable thread (11), a heating oven (30), a false-twisting group (40), a second pair (50) of driving rollers and at least one interlacing device (60), which are arranged in sequence along the path of the thread (11), characterized in that said elastomer thread (81) is supplied upstream of the said false-twisting group (40).
    Type: Grant
    Filed: October 5, 1999
    Date of Patent: May 28, 2002
    Assignee: Fadis S.p.A.
    Inventor: Paolo Coró
  • Patent number: 6385956
    Abstract: A packing yarn and a method of manufacturing a packing yarn composed of at least two bands which are at most 5 mm wide and are joined together by a yarn manufacturing method, include forming the bands of a laminate having at least one layer of flexible graphite and at least one layer of a metal foil with a tensile strength of at least 250 MPa. The layers of graphite foil and metal foil are joined by adhesion or through the use of a non-adhesive-like coupling agent. The bands are produced from the laminates by cutting, which is preferably effected continuously. Advantages thereof are that strips or bands of flexible graphite, which have a tensile strength that is totally inadequate for the manufacture of packing yarns, are altered in terms of their mechanical properties.
    Type: Grant
    Filed: June 28, 1999
    Date of Patent: May 14, 2002
    Assignee: SGL Technik GmbH
    Inventors: Oswin Öttinger, Bernd Schellenberger
  • Publication number: 20020038539
    Abstract: A steel cord is formed by compactly twisting steel filaments together, the steel filaments including a plurality of zigzag filaments and optionally a nonzigzag filament, the zigzag filament being zigzaged two-dimensionally and made up of straight segments each extending between the zigzag peak points, the nonzigzag filament being straight. In case the cord is composed of only the zigzag filaments, the zigzag filaments include at least two kinds of zigzag filaments having different zigzag pitch lengths. In case the cord is composed of both the zigzag filaments and nonzigzag filaments, some of the zigzag and nonzigzag filaments are first loosely twisted together into a bunch, and then a plurality of bunches are twisted together into the cord. In any case, the zigzag pitch length and zigzag wave height of each zigzag filament are substantially constant along the length thereof.
    Type: Application
    Filed: October 11, 2001
    Publication date: April 4, 2002
    Applicant: Sumitomo Rubber Industries, Ltd.
    Inventors: Shinichi Miyazaki, Kazumi Yamazaki, Yazuo Sakai
  • Patent number: 6365273
    Abstract: The invention relates to a cord comprising a core structure and one layer, said core structure consisting of 1 to 4 core filaments (1) having a diameter d1, d1, being greater than 0.15 mm and smaller than 0.40 mm, said layer consisting of n+m layer filaments (2) having a diameter d2 and being twisted in the same direction and at the same pitch as the core filaments (1) of said core, d2 being greater than or equal to d1−0.05 mm and being smaller than or equal to d1−0.015 mm, n being equal to the number of core filaments (1) and m being equal to six if n is greater than one and being equal to five if n is equal to one, whereby the core filaments (1) are visually different from the layer filaments (2).
    Type: Grant
    Filed: July 16, 1992
    Date of Patent: April 2, 2002
    Assignee: N.V. Bekaert S.A.
    Inventor: Freddy Baillievier
  • Patent number: 6360522
    Abstract: 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: Grant
    Filed: August 16, 2000
    Date of Patent: March 26, 2002
    Assignee: Bridon PLC
    Inventor: John Mawson Walton
  • Patent number: 6330786
    Abstract: A yarn comprising buffalo hair and wool is commercially spun, in which the yarn has between about 5% to about 95% buffalo hair and between about 95% to about 5% fiber, and particularly has about 20% buffalo hair and about 80% fiber. The yarn is used to make fabric that can be used to make clothing, blankets, and other goods.
    Type: Grant
    Filed: September 10, 1999
    Date of Patent: December 18, 2001
    Assignee: Great Plains Buffalo Products, Inc.
    Inventor: Sheri Stotz Settle
  • Publication number: 20010039790
    Abstract: The present invention provides a process whereby high quality, well-coalesced spandex can be made by dry-spinning a high-melting thermoplastic polyurethane, bundling the as-spun filaments into a side-by-side relationship, and passing the bundled filaments over or through a guide. The spandex made by this method has high-heat settability, high denier uniformity, good knittability and weavability, and provides fabrics having good surface uniformity.
    Type: Application
    Filed: February 23, 2001
    Publication date: November 15, 2001
    Inventors: Masao Umezawa, Hideki Nakanishi, Toshikazu Matsuda
  • Patent number: 6308508
    Abstract: A steel cord for reinforcement of a radial tire and a radial tire employing the same are disclosed. The steel cord is made of more than three steel filaments of which one or two filaments are regularly twisted, the other filaments are open-twisted and each filament is twisted in same direction. Each steel filament using carbon steel has the carbon content of 0.7 to 0.96 wt %, the tensile strength of the filament is in the range of 260 to 380 kgf/mm2, the twisting pitch is 10 to 20 mm, and each filament is plated with brass. The topping characteristic is improved and the uniformity of tire is enhanced.
    Type: Grant
    Filed: September 9, 1999
    Date of Patent: October 30, 2001
    Assignee: Hankook Tire Co., Ltd.
    Inventor: Yong Sik Han
  • Patent number: 6293080
    Abstract: A sewing thread for a leather product composed of fibers attached with a highly water absorbing powdery material on the surface of the fibers, in a ratio of 5 weight % or more based on the weight of the fibers, and a leather product, with excellent water-proof property, prepared by using the same thread.
    Type: Grant
    Filed: December 22, 1998
    Date of Patent: September 25, 2001
    Assignee: Teijin Limited
    Inventors: Toshio Nishihara, Tuyoshi Torikai
  • Patent number: 6260343
    Abstract: Strands and wire ropes composed of materials such as high carbon steels and stainless steels can be provided in a compacted, mechanically stress relieved and thermally stress relieved condition. The wires are compacted during stranding to form the individual strands of the wire ropes. The wires can be thermally stress relieved prior to stranding to remove tensile residual stresses. Compaction produces a compressive residual stress state in the strands which increases fatigue resistance. The strands can be thermally stress relieved subsequent to closing. The wires and strands can be heated using a process such as induction heating. The wire ropes can be torque balanced or rotation resistant. The wire ropes have high strength, a high strength-to-weight ratio and enhanced fatigue life. Stainless steel wire ropes also provide corrosion resistance.
    Type: Grant
    Filed: April 28, 1999
    Date of Patent: July 17, 2001
    Assignee: Wire Rope Corporation of America, Incorporated
    Inventor: Bamdad Pourladian
  • Patent number: 6250254
    Abstract: An animal chew including a plurality of fibers which are wound together to form rope strands. Two or more rope strands are twisted together to form a rope segment. A ribbon baring indicia is either interlaced with the rope segments or helically twisted around the perimeter of the rope segment. The indicia printed on the ribbon can either be of a fun nature, a commercial nature, or a public safety nature.
    Type: Grant
    Filed: July 21, 1999
    Date of Patent: June 26, 2001
    Inventor: Charles Weinacker
  • Patent number: 6214145
    Abstract: The present invention provides a process whereby high quality, well-coalesced spandex can be made by dry-spinning a high-melting thermoplastic polyurethane, bundling the as-spun filaments into a side-by-side relationship, and passing the bundled filaments over or through a guide. The spandex made by this method has high heat-settability, high denier uniformity, good knittability and weavability, and provides fabrics having good surface uniformity.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: April 10, 2001
    Assignee: DuPont Toray Co., Ltd.
    Inventors: Masao Umezawa, Hideki Nakanishi, Toshikazu Matsuda
  • Patent number: 6182432
    Abstract: A hauling cord (L) for pulling an electric power line or the like cable into a conduit has an elongate linear body (1) that is typically a monofilament of a thermoplastic resin. The cord is of a regular or irregular cross section with one or more helical ridges (2) that extend around, along and integral with the linear body between opposite ends of the linear body. The helical ridges are formed by drawing and twisting a raw material of the linear body, and may have either of or both the opposite ends made thinner and/or twisted stronger than the remaining portion so that the pitch between the adjacent ridges is reduced. The cross section renders the cord lighter in weight and more slender, and nevertheless its compression strength and tensile strength are improved.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: February 6, 2001
    Inventor: Minoru Takahashi
  • Patent number: 6161371
    Abstract: A Rope-like apparatus is provided which comprises a hook and loop type fabric oriented in a variety of geometric patterns and configurations which facilitate self attachment when the opposing hook and loop type material come in operable contact.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: December 19, 2000
    Assignee: Spyderco, Inc.
    Inventor: Louis S. Glesser
  • Patent number: 6102095
    Abstract: A corrosion resistant steel cord for reinforcing rubber articles, particularly a belt and/or carcass of a pneumatic tire, has a residual compressive stress inside the twisting helix of each steel filament such that a ratio R.sub.1 /R.sub.0 is less than one, where R.sub.0 is the radius of curvature of a helix in each helically formed steel filament obtained by untwisting of the cord and R.sub.1 is the radius of curvature of the helix after removal of a surface layer from the inside of the helix in the steel filament. The steel filaments have a tensile strength of 4,000-4,800 N/mm.sup.2.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: August 15, 2000
    Assignees: Bridgestone Corporation, Bridgestone Metalpha Corporation
    Inventors: Naohiko Obana, Yoshikazu Kaneko, Ryuzo Osawa
  • Patent number: 5894875
    Abstract: A pneumatic radial tire includes a belt layer, comprised of steel cords having a lateral flat cross-section, arranged around an outer periphery of a tread portion of a carcass layer so that the diameter direction of the steel cords is made to follow the planar direction of the belt layer, the steel cord is made a flat 1.times.6 twist structure comprised of filaments of a filament diameter d of 0.20 to 0.40 mm, the long diameter D.sub.L and twist pitch P of the steel cord taken out from the tire are made with respect to the filament diameter d as follows:3.67 d-0.04.ltoreq.D.sub.L .ltoreq.3.67 d+0.1630d.ltoreq.P.ltoreq.45dand the elongation of the steel cord caused when increasing a load from 0.25 kg to 5.0 kg is made 0.25% or less.
    Type: Grant
    Filed: March 13, 1997
    Date of Patent: April 20, 1999
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Takeo Masaki, Eiji Igarashi, Yoshiki Kanehira, Tosio Kawai, Ryuzou Komatsu
  • Patent number: 5884467
    Abstract: A rope-like instrument comprising hook and loop fabric to facilitate self-attachment. The instrument wraps about itself to form a closed loop, in place of forming a knot in the rope.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: March 23, 1999
    Assignee: Spyderco, Inc.
    Inventor: Louis S. Glesser
  • Patent number: 5852926
    Abstract: A balanced strand includes a fibrous core about which load bearing fibers are twisted. The fibrous core has an elongation factor of at least 10% and comprises approximately up to 30% of the material volume of the strand. The load bearing fibers have an elongation factor less than the fibrous core and a strength of at least 15 g denier. The load bearing fibers comprise the remaining strand material volume.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: December 29, 1998
    Assignee: Wellington Leisure Products, Inc.
    Inventor: James R. Breedlove
  • Patent number: 5724800
    Abstract: The ring spinning method drafts a sliver in a multi-stage drafting system where the sliver acquires a total draft in a range of from 60 to 150-fold. Following outlet from the last nip of the drafting system, the drafted sliver is conveyed without drafting over a guide path in which the fiber band is condensed to form a compact fiber strand of not more than 2.5 millimeters width and preferably less than 1 millimeter in width. At the end of the guide path, the fiber strand passes through a twist inhibiting nip between two rollers and is then passed by twist distribution to a ring spinning device. The yarn produced possesses a quality with respect to hairiness and neps.
    Type: Grant
    Filed: November 19, 1996
    Date of Patent: March 10, 1998
    Assignee: Rieter Machine Work, Ltd.
    Inventors: Angelo Lucca, Herbert Stalder
  • Patent number: 5687557
    Abstract: A steel cord (114) comprises strength elements (100, 132) and having a length, a longitudinal central axis (112) and a cord pitch. At least one of the elements (100) has a projection on a plane YZ perpendicular to the longitudinal central axis (112). This projection takes the form of a curve with a radius of curvature which alternates between a maximum and a minimum. The curve further has a center of curvature. The radius of curvature and the center of curvature lie inside the curve so that a convex curve is obtained. The cord (114) is further characterized by one or both of following features:(i) the distance between two minimum radii of curvature of said curve measured along the longitudinal central axis (112) is different from half the cord pitch; or(ii) if all of said elements (100) provide a convex curve, at least one of said convex curves substantially differs from another convex curve.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: November 18, 1997
    Assignee: N.V. Bekaert S.A.
    Inventors: Xavier De Vos, Frans Van Giel
  • Patent number: 5651246
    Abstract: A method for producing a steel cord from 3 to 6 steel filaments on which a coating is applied to retain the adhesion to a rubber, the steel cord being destined for use to reinforce a rubber product having a flat section, comprising the following steps of preforming steel filaments at a ratio of more than 120% by twisting them together to form an open-structure steel cord; and passing the steel cord through a flattening apparatus provided at each of outlet and inlet thereof with a roller having a groove formed in the center of the circumference thereof, and between the inlet and outlet rollers with at least a roller of which the circumferential surface is flat, to repeatedly bend the steel cord vertically or horizontally.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: July 29, 1997
    Assignee: Bridgestone Metalpha Corporation
    Inventor: Noboru Kusaba
  • Patent number: 5609013
    Abstract: A steel cord for the reinforcement of rubber articles is formed by twisting plural filament wires of a high carbon steel. In this case, the filament wire is drawn from a wire rod so as to satisfy a relationship of T.gtoreq.230-148 logD (wherein D is a diameter of the filament wire and T is a tensile strength of the filament wire) and a difference in tensile strength between a surface layer portion and an internal portion in the filament wire of not more than 80 kgf/mm.sup.2.
    Type: Grant
    Filed: February 3, 1995
    Date of Patent: March 11, 1997
    Assignee: Bridgestone Bekaert Steel Cord Co., Ltd.
    Inventors: Akihiro Kaneda, Koichi Yokota, Masao Nakamura
  • Patent number: 5605035
    Abstract: A rope including a heat sensitive component which is subject to a visible change in appearance, such as a color change, when exposed to a selected elevated temperature resulting from a strain-related heat release from the rope. The heat sensitive coating may be contained in a coating over a fiber of the rope or a rope strand, or may be incorporated in sheath located over the load-bearing core of the rope.
    Type: Grant
    Filed: February 22, 1994
    Date of Patent: February 25, 1997
    Assignees: University of Strathclyde, Bones Ord (Holdings) Ltd.
    Inventors: Richard A. Pethrick, David Wotherspoon
  • Patent number: 5603208
    Abstract: A composite rubber body is formed by embedding steel cords in rubber and vulcanization-building them. In this case, each of the steel cords is a single steel filament wire or plural twisted steel filament wires obtained by drawing of a wire rod of high carbon steel having a given composition. The filament wires satisfy given relationships between filament diameter and tensile strength before and after the vulcanization and have a retention of loop strength of not less than 55%.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: February 18, 1997
    Assignee: Bridgestone Bekaert Steel Cord Co., Ltd.
    Inventors: Masuhiro Fujita, Hironori Sakaguchi, Akihiro Kaneda
  • Patent number: 5427165
    Abstract: A reinforcement assemblage formed at least in part of continuous monofilaments of liquid crystal organic polymer or polymers, characterized by the following features:(a) the diameter D.sub.m of the monofilaments is at least equal to 40 .mu.m and less than 400 .mu.m;(b) the tenacity T.sub.a of the assemblage is greater than 80 cN/tex;(c) the secant tensile modulus M.sub.a of the assemblage is greater than 2000 cN/tex;(d) at least one of the monofilaments is practically wound helically around an axis, the acute angle .gamma. which each monofilament makes with this axis, which is assumed rectilinear, being less than 30.degree.;(e) the twist of each monofilament on itself is less than 10 turns per meter of assemblage.Articles reinforced by these assemblages, in particular automobile tires.
    Type: Grant
    Filed: August 24, 1992
    Date of Patent: June 27, 1995
    Assignee: Michelin Recherche et Technique S.A.
    Inventors: Claudio Balestra, Joel Ribiere
  • Patent number: 5319915
    Abstract: A steel cord comprising a number (between 3 and 27) of element steel wires tightly twisted at a regular pitch P between 5 and 20 mm in the same direction. Each wire has a diameter d between 0.1 and 0.4 mm. At least one of the wires includes a spiral portion having a spiral pitch P1 between 0.1P and 0.7P and a spiral diameter d1 between d+2/100 mm and d+2/10 mm. At least one other wire includes a straight portion. At any cross section of the cord, 1/4 through 2/3 of the wires is/are spiral and the other wire/s is/are straight. The stretch of the cord under a load of 5 kg is between 0.10 and 0.40%. A method of producing a steel cord comprises supplying a number of element steel wires, forming at least part of at least one of the wires to be spiral, and tightly twisting the wires.
    Type: Grant
    Filed: January 14, 1993
    Date of Patent: June 14, 1994
    Assignee: Tokusen Kogyo Co., Ltd.
    Inventors: Yoshiro Kobayashi, Koichi Hinoura, Akihiro Nagamoto, Toshiaki Shimizu, Takanori Kobayashi
  • Patent number: 5223060
    Abstract: A pneumatic radial tire containing a steel cord/rubber composite reinforcement structure wherein the steel cord comprises a plurality of steel filaments embedded in a rubber layer.
    Type: Grant
    Filed: August 13, 1992
    Date of Patent: June 29, 1993
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Susumu Imamiya, Yukio Tozawa
  • Patent number: 5213652
    Abstract: A pneumatic radial tire for automotive vehicles comprising a least one rubber coated steel cord consisting of a pair of intertwisted filaments and having a flatness ratio f in the range of 0.6.ltoreq.f .ltoreq.0.9, where f is defined by 2d/h, where d is a diameter of a filament and h is the maximum diameter of the flattened 1.times.2 cord. This cord is obtained by deforming the cord with a force applied transversely and unidirectionally over its length.
    Type: Grant
    Filed: December 19, 1991
    Date of Patent: May 25, 1993
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Hisao Katoh, Susumu Imamiya