At Least One Layer Including Metal Cords Patents (Class 156/124)
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Patent number: 10414131Abstract: An adhesive sheet includes an adhesive composition layer. The adhesive composition layer is formed using a composition including a polythiol compound, a compound having plural epoxy groups, a radical generator and an amine-based catalyst. The ratio (Ep/SH (epoxy groups/thiol groups ratio)) of a total molar number (Ep) of epoxy groups contained in the compound having plural epoxy groups to a total molar number (SH) of thiol groups contained in the polythiol compound is higher than 0.20 but lower than 1.00.Type: GrantFiled: December 22, 2014Date of Patent: September 17, 2019Assignee: BRIDGESTONE CORPORATIONInventor: Hajime Kitano
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Patent number: 10301510Abstract: An adhesive tape (1), in particular a double-sided adhesive tape has a substrate made of plastic with a self-adhesive, pressure-sensitive layer (3) consisting of a pressure-sensitive adhesive containing a UV-crosslinkable acrylate as primary constituent. In order to achieve an at least moderate, preferably increased adhesive force on nonpolar surfaces (4a) as well as preferably an increased shear strength, while preserving the advantages of the use of UV-crosslinkable acrylates in the adhesive coating and ensuring an at least moderate, preferably increased adhesive force on steel, the pressure-sensitive adhesive contains powdered silicon dioxide, wherein the substrate (2) made of plastic is configured as a film.Type: GrantFiled: June 19, 2014Date of Patent: May 28, 2019Assignee: Coroplast Fritz Müller GmbH & Co. KGInventors: Christoph Lodde, Frank Kura
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Patent number: 10000029Abstract: A method of manufacturing a power transmission belt includes: molding and vulcanizing an endless tension member layer in which a cord extending in a belt length direction is embedded; molding and vulcanizing a rubber member for a compressed rubber layer; and bonding together the tension member layer that has been vulcanized and the rubber member, that has been vulcanized, for the compressed rubber layer.Type: GrantFiled: August 9, 2016Date of Patent: June 19, 2018Assignee: Bando Chemical Industries, Ltd.Inventors: Hirofumi Miyata, Soichiro Nakane, Hisashi Izumi
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Patent number: 9637666Abstract: A composition includes: a polythiol compound; a compound having plural epoxy groups; a radical generator; and an amine-based catalyst. In the composition, the ratio (Ep/SH (epoxy groups/thiol groups)) of the total molar number (Ep) of epoxy groups contained in the compound having plural epoxy groups to the total molar number (SH) of thiol groups contained in the polythiol compound is 0.50 or higher but lower than 2.00.Type: GrantFiled: December 23, 2014Date of Patent: May 2, 2017Assignee: BRIDGESTONE CORPORATIONInventor: Hajime Kitano
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Patent number: 9017500Abstract: A belt structure for a two-wheeled vehicle made by means of strip-like segments or elements, each including parallel cords embedded in an elastomeric layer, sequentially laid along the circumferential extension of a toroidal support so as to form a reinforcing layer having a continuous circumferential extension around a geometric rotation axis of the toroidal support, wherein each strip-like element is laid in a laying trajectory defining, at each point, a laying angle; at each point of the laying trajectory a laying gap is formed between adjacent strip-like elements; the laying trajectory is formed starting from preselected laying angles on the shoulder and on the crown of the tire; the laying gap between adjacent strip-like elements varies along at least one length of said laying trajectory between crown and shoulder so as to cause variation of the laying angle and obtain the preselected angles on the shoulder and on the crown.Type: GrantFiled: December 22, 2008Date of Patent: April 28, 2015Assignee: Pirelli Tyre S.p.A.Inventors: Pierangelo Misani, Fiorenzo Mariani, Marco Cantu′
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Publication number: 20150017361Abstract: This disclosure relates to a film for a tire inner liner film that may exhibit uniform excellent physical properties over all directions when applied to a tire, and may secure excellent durability and fatigue resistance in a tire manufacturing process or in an automobile running process, a method for manufacturing the film for a tire inner liner, a pneumatic tire using the tire inner liner film, and a method for manufacturing the pneumatic tire using the tire inner liner film.Type: ApplicationFiled: March 8, 2013Publication date: January 15, 2015Applicant: KOLON INDUSTRIES, INCInventors: Yun-Jo Kim, Si-Min Kim, Dong-Jin Kim, II Chung, Dong-Hyeon Choi
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Publication number: 20140374009Abstract: A method forms an adhesion joint between a cord and a rubber matrix. The method includes the steps of: providing a cord having an initial relatively smooth surface; texturing the smooth surface such that the resulting surface is rougher than the initial surface of the cord; depositing a uniform polymer coating on to the textured surface of the cord by plasma polymerization of an organic precursor and an air plasma; and inserting the cord into a rubber matrix such that the resulting surface provides enhanced adhesion to the rubber matrix compared to the adhesion of the initial surface to the rubber matrix or adhesion of the textured surface to rubber matrix.Type: ApplicationFiled: June 20, 2013Publication date: December 25, 2014Inventors: Samy Laroussi Mzabi, Frederic Gerard Auguste Siffer, Gilles Joseph Henri Bertemes, Claude Ernest Felix Boes, James Gregory Gillick
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Publication number: 20140345769Abstract: In order that spaces, including a space in the central portion, inside a steel cord used as a reinforcement by being embedded in a tire or the like are filled with an uncured rubber, the uncured rubber is coated on plural steel core filaments which are then stranded to form a single layer steel cord, the core then being stranded with uncoated outer layer filaments. Consequently, it is possible to exhibit satisfactory corrosion resistance and satisfactory fatigue resistance as a steel cord, shorten a curing time in tire component assembling or the like to attain energy saving and prolong the life of a steel cord itself and the life of a tire or the like using the same as a reinforcement. Further, production can be performed at low cost.Type: ApplicationFiled: July 25, 2014Publication date: November 27, 2014Inventors: Susumu IMAMIYA, Satoshi YOSHIDA
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Patent number: 8770245Abstract: In the manufacture of a tire, a belt structure is made by means of strip-like segments or elements, each comprising parallel cords embedded in an elastomeric layer, sequentially laid along the circumferential extension of a toroidal support, in such a manner that: each strip-like element is laid in a laying trajectory defining, at each point, a laying angle; at each point of the laying trajectory a laying gap is formed between adjacent strip-like elements, the laying trajectory being formed starting from preselected laying angles on the shoulder and on the crown of the tire, the laying gap between adjacent strip-like elements varying along at least one section of the laying trajectory between crown and shoulder so as to cause variation of the laying angle and to obtain the preselected angles on the shoulder and on the crown.Type: GrantFiled: December 22, 2008Date of Patent: July 8, 2014Assignee: Pirelli Tyre S.p.A.Inventors: Pierangelo Misani, Mariani Fiorenzo, Marco Cantu′
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Publication number: 20130327467Abstract: A method for making a vehicle tire wherein the vehicle tire includes a belt having at least one belt layer made of parallel steel cords embedded in rubber. The belt ply is built up on a building drum in order to produce a tire blank. Upon completion of the tire blank, the tire blank is shaped and vulcanized in a vulcanizing press. The method includes applying the belt ply made of parallel, extensible steel cords embedded in rubber to a building drum to build up the belt. After the tire blank is completed, tire blank is shaped and vulcanized in a vulcanizing press to reduce the extensibility of the steel cords.Type: ApplicationFiled: August 14, 2013Publication date: December 12, 2013Applicant: Continental Reifen Deutchland GmbHInventor: Theresia Becker
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Patent number: 8512428Abstract: An object is to provide a vent filter in which a vent film is less likely to be broken when cut and a measure to shrinkage is taken while the characteristics and functions both inherent to the vent film are being kept. The vent filter includes a frame-shaped adhesive layer 2 and a vent film 3 attached to the adhesive layer 2, wherein an outer peripheral portion of the vent film 3 is positioned at an outer side than an outer peripheral portion of the frame-shaped adhesive layer 2.Type: GrantFiled: June 19, 2009Date of Patent: August 20, 2013Assignee: Japan Gore-Tex Inc.Inventors: Takuya Ueki, Takayuki Saeki, Shuichi Sayama
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Patent number: 8454777Abstract: The present invention can transfer a belt member on a supply conveyor onto a building drum from an inclined distal end portion while holding on both side edge portions in the width direction thereof and can efficiently adhere the belt member according to the rotation of the building drum. As a means for such building, using a supply conveyor (5) which places the belt member (B1) thereon and a hand device (10) which includes holding members (17a), (17b) having press plates (16a), (16b) extending in the feeding direction of the supply conveyor.Type: GrantFiled: January 30, 2006Date of Patent: June 4, 2013Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Tomoyuki Takatsuka, Taizo Yamamoto, Makoto Koumo, Yu Hatayama
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Patent number: 8357255Abstract: Provided are a pneumatic tire manufacturing method and a pneumatic tire capable of improving separation failure of a tire component member made of either a thermoplastic resin or a thermoplastic elastomer composition. The method and the pneumatic tire have the following configuration. A green tire is formed by radially expanding a carcass band 13 which is formed on a making drum 21 and which includes an annular tire component member 10 made of any one of a thermoplastic resin and a thermoplastic elastomer composition produced by blending a thermoplastic resin component and an elastomer component. The tire component member 10 is formed of plural layers 10A, 10B, 10C that are stacked on one another. After the inner-side layer 10A (10B) is attached, the making drum 21 is radially expanded by a predetermined amount and then the outer-side layer 10B (10C) is attached onto the inner-side layer 10A (10B).Type: GrantFiled: January 19, 2010Date of Patent: January 22, 2013Assignee: The Yokohama Rubber Co., Ltd.Inventor: Harutaka Inoue
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Patent number: 8328973Abstract: Disclosed is a method of manufacturing a radial tire for a construction vehicle, wherein when a cylindrical band is formed by using one layer of carcass layer formed of steel cords in a band making step, a shape retaining layer formed of at least one layer of organic fiber cords is wrapped on the outer peripheral surface of the carcass layer so that the organic fiber cords cross the steel cords of the carcass layer. The radial tire having excellent uniformity without any uneven widening between the steel cords can be provided without using a shape retaining auxiliary apparatus.Type: GrantFiled: October 1, 2004Date of Patent: December 11, 2012Assignee: The Yokohama Rubber Co., Ltd.Inventors: Ken Takahashi, Kazuo Teramoto, Tsuyoshi Maekawa
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Patent number: 8182634Abstract: There is provided a belt member producing method including forming a strip piece 17 of a predetermined width W by cutting a strip material 12 including a plurality of reinforcement cords 11 to a regular size, conveying the strip piece 17 to a transfer conveyor 22 in such a manner that cut sides 19 of the strip piece 17 are in parallel with a traveling direction B of the transfer conveyor 22 and overlapping continuously an integral number Nint of strip pieces 17 on each other on the transfer conveyor 22 in such a manner that the strip pieces 17 are overlapped on each other by an overlapping amount P along non-cut sides 18 thereof, so as to produce a belt member 30 having a desired length equal to a predetermined length L of a belt layer of a pneumatic radial tire, the belt member producing method being characterized by including selecting a desired cutting angle ?pre relative to a traveling direction A of the strip material 17 when the strip material 12 is cut to the regular size, calculating a number Ncal ofType: GrantFiled: July 15, 2005Date of Patent: May 22, 2012Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Tetsuo Tatara, Tomoyuki Takatsuka, Hirokatsu Mizukusa, Osamu Fujiki
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Patent number: 8075718Abstract: Disclosed are a method for manufacturing a heavy-duty pneumatic tire by winding a reinforcing belt disposed in a belt layer of a tread with an untopped spiral steel cord, and a tire manufactured by the same.Type: GrantFiled: October 28, 2008Date of Patent: December 13, 2011Assignee: Hankook Tire Co., Ltd.Inventors: Yun Chang Chun, Seung Il Min
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Publication number: 20100276054Abstract: Process for manufacturing a tyre, includes the following steps: (a) winding at least one metal wire so as to form a plurality of coils, the coils being radially superimposed and axially arranged side-by-side with respect to one another, so as to obtain a bead core; (b) applying at least one layer of a crosslinkable elastomeric material to the bead core obtained in step (a), so as to obtain a coated bead core; (c) partially crosslinking the at least one layer of crosslinkable elastomeric material, so as to obtain an amount of free sulfur of 30% by weight to 70% by weight, preferably of 40% by weight to 65% by weight, more preferably of 50% by weight to 60% by weight, with respect to the total weight of the sulfur present in the crosslinkable elastomeric material; and (d) applying a bead filler to the radial outer surface of the bead core obtained in step (c), so as to obtain a bead structure for a green tyre.Type: ApplicationFiled: October 16, 2006Publication date: November 4, 2010Inventors: Giuseppe Cereda, Luca Merlo
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Patent number: 7780806Abstract: There is provided a tire for an aircraft capable of enhancing abrasion resistance and effectively preventing a progress of peeling of the non-extensible cords of the main belt layers even when the tire suffers external injury reaching the main belt layers.Type: GrantFiled: April 11, 2007Date of Patent: August 24, 2010Assignee: Bridgestone CorporationInventor: Daisuke Itami
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Patent number: 7705077Abstract: The present invention provides a rubber composition for coating a steel cord in a belt layer which can decrease a decreasing rate of tensile properties caused by deterioration of thermal oxidation, inhibiting peeling from the steel cord and further reducing a rubber flow, and a steel cord coated with a carcass layer comprising the same. The present invention relates to a rubber composition for coating a steel cord comprising (A) at least 3 parts by weight and less than 5 parts by weight of sulfur, (B) 0.1 to 1 part by weight of hexamethylenebisthiosulfate disodium salt dihydrate, and (C) a cobalt salt of an organic acid containing boron based on 100 parts by weight of a rubber component, wherein the amount of cobalt in the cobalt salt of a boron containing organic acid (C) is 0.05 to 0.25 part by weight based on 100 parts by weight of the rubber component, and a steel cord coated with a carcass layer comprising the same.Type: GrantFiled: September 20, 2005Date of Patent: April 27, 2010Assignee: Sumitomo Rubber Industries, Ltd.Inventor: Tatsuya Miyazaki
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Publication number: 20100000661Abstract: A device for turning a carcass band is used for a method of producing a green tire which enable to securely wrap and hold end portions of a carcass band, which is to be wrapped around a bead ring, as desired without a need for restraining the end portions on the bead ring by means of an auxiliary restraining member or the like. In this device, anvil rings having diameters smaller than that of the rigid core are arranged adjacent to respective side portion of a rigid core having an outer contour corresponding to an inner contour of a product tire. The anvil rings are fixed on a rotational driving shaft of the rigid core, and are provided with two annular grooves on their circumferences. Rotation disks for pressing a carcass band into the annular grooves of the anvil rings are arranged so as to approach to and recede from the anvil ring.Type: ApplicationFiled: September 21, 2007Publication date: January 7, 2010Applicant: BRIDGESTONE CORPORATIONInventor: Yuichiro Ogawa
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Patent number: 7625511Abstract: A method and device for manufacturing tire's annular member having a stretch mainly in radial direction by use of simple devices and simple way of pressing with high precision and easiness, as to produce tire product in high quality with no fluctuation of mass and/or uniformity, comprising: a first mold including a profile mold having an annular recess; a second mold which faces the first mold; and an extruder that continuously extrudes a rubber body into the recess of the profile mold. Concurrent with such extruding, the profile mold is rotated by one turn so as to charge the rubber body into the annular recess in a manner as annularly continuous. Then, the first and the second molds are brought abut each other so as to press the rubber body between the profile and second molds; thus shaping the rubber body into a shape defined by the profile mold.Type: GrantFiled: May 23, 2005Date of Patent: December 1, 2009Assignee: Toyo Tire & Rubber Co., Ltd.Inventors: Shigeo Kudo, Toshiyuki Tanaka, Tetsuo Tatara
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Patent number: 7501033Abstract: A chipper and apex subassembly 100 as an intermediate article of manufacture in a pneumatic tire has an apex strip 30 formed as a continuous elastomeric strip of unvulcanized material having a bottom base portion 31 and two opposing sides 33, 34 extending towards the narrow outer tip 32 and a chipper ply strip 40 reinforced with parallel cords oriented on a bias angle relative to the length of the strip cojoined to the apex 30 along the length of the strips and attached to one side of the unvulcanized apex strips on an outer surface. The chipper 40 is spaced from the bottom base portion 31 of the apex 30 and extends widthwise towards the narrow outer tip 32 to form a subassembly 100 of a chipper 40 and apex 30 as an intermediate article of manufacture. Additionally the subassembly 100 can be attached to bead core 12 to make a subassembly 200 as a further intermediate article of manufacture.Type: GrantFiled: September 6, 2006Date of Patent: March 10, 2009Assignee: The Goodyear Tire & Rubber CoInventors: Richard Nicholas Hrycyk, Donald Chester Kubinski, Richard Joseph Piccin
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Patent number: 7476285Abstract: A motorcycle tire having excellent belt cord durability, high-speed durability, impact force absorbability, running stability and uniformity performances is produced by constituting a belt with a low-cost steel cord member having a specified twisting construction of 2 to 7 filaments and a specified space between the mutual filaments over a full length of the cord in the belt.Type: GrantFiled: January 21, 2005Date of Patent: January 13, 2009Assignee: Bridgestone CorporationInventors: Kiyoshi Ikehara, Sumito Nakagawa, Tsutomu Nakamura
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Patent number: 7470460Abstract: Layered composite materials which comprises a substrate made from a thermoplastic polymer, and comprise an intermediate layer arranged thereupon and a decorative layer applied to the intermediate layer, where the decorative layer is composed of a chromed metal. A heat-cured layer may moreover be applied to the decorative layer. Layered composite materials of this type are suitable, inter alia, as reflecting or insulating parts of household devices or of moldings in the electrical, construction or automotive industry.Type: GrantFiled: August 3, 2005Date of Patent: December 30, 2008Assignee: Basell Polyolefine GmbHInventors: Klaus Müller, Klaus Klemm
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Patent number: 7441318Abstract: A method and apparatus for detecting exposed and partially separated metal cords 17 in a cut end of a metallic cord reinforced strip 17 includes the steps of conveying and cutting the strip 17 and separating the cut ends and passing the conveyed cut strip 17 past a sensor means 40 for detecting any exposed partially separated metal cords or filaments. The preferred sensor means 40 includes a pair of closely spaced electrically conductive rollers 41, 42, a power source connected to one of the other rollers 41 or 42. When an exposed wire 26 touches both rollers 41 and 42 a circuit is closed giving indication of an exposed wire cord condition.Type: GrantFiled: February 9, 2005Date of Patent: October 28, 2008Assignee: The Goodyear Tire & Rubber CoInventors: David Ray Lovell, Jingfei Zhang
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Patent number: 6988880Abstract: Apparatus for highly reliably cutting a rubber strip (12) even when reinforcement cords are embedded therein, and for shaping the upper surfaces of the trailing end of a resultant rubber band member (15) and the leading end of the remaining rubber strip (12) to have a slope inclined with a small angle relative to the general plane of the rubber strip (12) or rubber band member (15). An anvil (20) and a press cutter/shaper (39) are arranged opposite to each other, and a cutting blade (38) is gradually inserted into an anvil groove (22), with at least one surface (38a, 38) of the blade (38) pressed against a periphery (22a) of the anvil groove (22). The cutting blade (38) protrudes from the boundary between inclined a pair of shaping surfaces (34, 35) towards the anvil 20, and has a cutting blade angle (F) that is smaller than angle (G) between the inclined shaping surfaces (34, 35).Type: GrantFiled: August 31, 2004Date of Patent: January 24, 2006Assignee: Bridgestone CorporationInventors: Masami Adachi, Takao Urayama
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Patent number: 6824720Abstract: Method and apparatus for highly reliably cutting a rubber strip (12) even when reinforcement cords are embedded therein, and for shaping the upper surfaces of the trailing end of a resultant rubber band member (15) and the leading end of the remaining rubber strip (12) to have a slope inclined with a small angle relative to the general plane of the rubber snip (12) or rubber band member (15). An anvil (20) and a press cutter/shaper (39) are arranged opposite to each other, and a cutting blade (38) is gradually inserted into an anvil groove (22), with at least one surface (38a, 38) of the blade (38) pressed against a periphery (22a) of the anvil groove (22). The cutting blade (38) protrudes from the boundary between inclined a pair of shaping surfaces (34, 35) towards the anvil 20, and has a cutting blade angle (F) that is smaller than angle (G) between the inclined shaping surfaces (34, 35).Type: GrantFiled: January 30, 2002Date of Patent: November 30, 2004Assignee: Bridgestone CorporationInventors: Masami Adachi, Takao Urayama
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Patent number: 6749708Abstract: A method is provided for splicing a conveyor belt having vulcanized rubber with steel strands embedded in the vulcanized rubber, comprising the steps of exposing a plurality of strands at two belt ends, and applying a vulcanizable rubber composition to the exposed strands to form a spliced joint between the two belt ends, the vulcanizable rubber composition comprising 100 parts by weight of rubber, and the rubber comprising from about 1 to about 40 parts by weight of a polyoctenamer.Type: GrantFiled: August 22, 2002Date of Patent: June 15, 2004Inventors: Terry Frank Allen, Kevin Xie
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Patent number: 6695949Abstract: The invention relates to a feeding device for strip-shaped tire components. The inventive device is situated in a conveying device for a tire construction drum. The feeding device comprises one or several storage means, feeding and cutting devices pertaining thereto as well as transport devices by means of which the cut tire components are transported to the tire construction drum. The transport devices which withdraw the tire component from the storage means and position said tire component under the cutting device and the transport devices which transport the cut tire component to the tire construction drum are configured as an interconnected one-piece transport system in a transport line. The transport system can be displaced between a rear cutting and feeding position and a support position that is moved to the front. The conveying devices are arranged in such a way that the one-piece transport system engages with the cutting devices in the rear position thereof.Type: GrantFiled: February 19, 2002Date of Patent: February 24, 2004Assignee: Continental AktiengesselschaftInventors: Andreas Jungk, Gerd Morig, Hubert Ringhoff
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Patent number: 6669798Abstract: Disclosed is a method of manufacturing a pneumatic radial tire comprising the steps of feeding a strip material comprising a plurality of reinforcing cords and having a predetermined width from a standard measure feeding device which is adjustable in its feeding angle to a carrier conveyor, cutting the strip material to a predetermined size in sequence to form strip pieces while alternately moving the strip material and the carrier conveyor intermittently in synchronization with each other, transferring the strip pieces onto the carrier conveyor, forming a belt member having a length equal to a length L of a belt layer for one tire by butting the strip pieces against each other along their longitudinal edges, and using the belt member as the belt layer, wherein if a width of the strip material is A and the number of the strip pieces for forming the belt layer is N, an angle &thgr; for cutting the strip material to the predetermined size relative to a moving direction of the standard measure feeding device isType: GrantFiled: August 27, 1998Date of Patent: December 30, 2003Assignee: The Yokohama Rubber Co., Ltd.Inventors: Noburu Okada, Kasuyuki Kabe
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Patent number: 6645334Abstract: A method for applying a plurality of reinforcement belts upon a toroidal tire carcass (50). First and second reinforcement belts (56, 60) are first wrapped around the tire carcass. Then a first belt assembly (68) of a third reinforced belt (69) with elastomeric wedges (72a, 72b) embedded into side edges (70a, 70b) of the third belt is wrapped around the second belt (60) so that the side edges (62a, 62b) of the second belt are spaced from the side edges (70a, 70b) of the third belt. An outer belt (74) and a tread (80) are applied about the third belt, and the tire carcass is ready to be cured in a tire mold.Type: GrantFiled: June 25, 2001Date of Patent: November 11, 2003Assignee: The Goodyear Tire & Rubber CompanyInventors: Michael Wallace Smith, Michael Raymond Dzurko, Patrick David Marks, William James Head
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Publication number: 20020084016Abstract: A cord-embedded rubber tape, a tire component made by winding such a tape, and a pneumatic tire comprising such a tire component are disclosed, wherein the tape is made of unvulcanized rubber and at least one cord is embedded therein along the length of the tape. The unvulcanized rubber may include short fibers oriented in the longitudinal direction of the tape.Type: ApplicationFiled: December 18, 2001Publication date: July 4, 2002Inventor: Yoshikazu Tanaka
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Patent number: 6372071Abstract: At least one metal wire embedded in a vulcanized elastomeric matrix obtained from a mixture comprising at least one vulcanizable elastomer and at least one vulcanization agent such as sulfur. The metal wire is galvanized steel and the vulcanizable mixture contains at least 0.2% by weight of trimercapto triazine, with respect to the weight of said elastomer, and 0.1-0.5% by weight of cobalt, with respect to the weight of said elastomer.Type: GrantFiled: May 27, 1994Date of Patent: April 16, 2002Assignee: Pirelli Coordinamento Pneumatici S.p.A.Inventors: Luciano Garro, Enzo Falzolgher
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Patent number: 6237663Abstract: A metal cord for reinforcing articles made from elastomeric material comprises a plurality of metal wires wound spirally around each other. At least one of the metal wires is formed from a shape memory material, has capacities of recovering a previously memorized shape, and is deformed from the memorized shape. The shape memory wire of the cord has the recovery capacities substantially active in a first heat cycle and degraded to at least a significant predetermined extent after the first heat cycle. One or more such metal cords may be incorporated in pneumatic tires, reinforcing fabric, and other articles, including by means of processes described herein.Type: GrantFiled: October 14, 1998Date of Patent: May 29, 2001Assignee: Pirelli Coordinamento Pneumatici S.p.A.Inventors: Marco Cipparrone, Gurdev Orjela, Guido Riva
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Patent number: 6096423Abstract: A surface-treated metal component for reinforcing structures for manufactured products made of vulcanized elastomeric material, in which the said component is coated with a layer of metal alloy and in which the said alloy is an alloy ZnMoX in which X is a metal chosen from the group comprising cobalt, iron and nickel.Type: GrantFiled: March 26, 1999Date of Patent: August 1, 2000Assignee: Pirelli Pneumatici S.p.A.Inventor: Federico Pavan
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Patent number: 6089293Abstract: A reinforcement ply for an elastomeric article comprises a plurality of parallel extensible reinforcing members laid at a substantially constant end count perpendicular to their longitudinal direction, the ply having different extensibilities in the longitudinal direction of the reinforcing members in different parts of the ply. The reinforcing members are preferably made such that they each have at least one filament which is displaced perpendicularly from the longitudinal centerline of the reinforcing member in one part of the reinforcing member compared to another part. A tire may include the reinforcement ply as a hoop or band in the ground contacting tread region.Type: GrantFiled: February 24, 1997Date of Patent: July 18, 2000Assignee: Sumitomo Rubber Industries Ltd.Inventor: Kevin John Niderost
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Patent number: 6086811Abstract: A system for molding an endless tractor track by wrapping uncured rubber, calendered cord and wire cable onto the rim of a building and curing drum, positioning the drum within a curing mold, withdrawing the drum from the mold, chilling the drum and then separating the parts of the drum to remove the completed tractor track.Type: GrantFiled: April 29, 1998Date of Patent: July 11, 2000Assignee: The Goodyear Tire & Rubber CompanyInventor: Louis T. Fike
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Patent number: 5709760Abstract: A thin gauge, fine diameter steel cord reinforced tire ply fabric 2 is lap spliced. The steel cord 1 has one or more filaments 9, and each filament has a percent elongation of over 2.5% and tensile strength of at least (-2000D+4400 MPa).times.95%, where D is the diameter of the filament in millimeters. For passenger and lightly loaded trucks the fabric 2 is manufactured using a preferred cord 1 which is a 1+5.times.0.18 mm cord spaced 14 ends per inch, and for heavier loaded vehicles such as light trucks load rated E or greater the number of cords 1 is increased to 28 ends per inch. The fabric 2 has a gauge thickness g in the range of the cord diameter C+0.22 mm to C+1.25 mm.Type: GrantFiled: October 18, 1995Date of Patent: January 20, 1998Assignee: The Goodyear Tire & Rubber CompanyInventors: Amit Prakash, William James Head, Gary Edwin Tubb, Terry Kenneth Woods
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Patent number: 5562792Abstract: A process for the manufacture of tire for high speed two-wheeled vehicles comprising making a cylindrical sleeve, attaching annular bead wires to the axial ends of said sleeve and shaping the sleeve into a toroidal configuration. A belt structure made of coils of cords is applied to the crown of said toroidal configuration. The belt is reinforced with HE cords which can be deformed to enable the tire carcass to be so largely expanded into the mold to achieve completely molding of a tread band.Type: GrantFiled: June 1, 1994Date of Patent: October 8, 1996Assignee: Pirelli Coordinamento Pneumatici S.p.A.Inventor: Renato Caretta
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Patent number: 5324375Abstract: The present invention refers to that position in which an assembling position of the shoulder bladder is connected with the expansion part thereof and stress is accumulated, and the expansion of the bladder and the assembling part are all wrapped with core-rubber composition to form a body.Type: GrantFiled: June 11, 1992Date of Patent: June 28, 1994Assignee: Kumho & Co., Inc.Inventors: Chun-Sik Kim, Young-Rok Yoon, Seong-keun Kim
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Patent number: 5201975Abstract: A tire is manufactured by assembling a tread package into a pattern ring and molding a tread thereon while partially precuring the package. The tire is further assembled by positioning an uncured carcass within the pattern ring so that the carcass contacts an uncured portion of the tread package. Finally, the assembled tire is separated from the pattern ring and subsequently heated in a mold devoid of a tread pattern to bond and cure the complete tire.Type: GrantFiled: July 25, 1991Date of Patent: April 13, 1993Assignee: Bridgestone/Firestone Inc.Inventors: Colin Holroyd, Anthony G. Goodfellow
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Patent number: 5192390Abstract: Mandrel means for forming tubular tubular articles of an infinitely variable range of sizes by helical winding of strip material (25) around the mandrel means comprises a support surface defined by an endless belt (37) which extends around two support drums (36) the spacing of which is selectively variable. The mandrel means additionally comprises a belt guide assembly (38) (39) which preferably diverts the belt (37) to follow an inwardly extending path between the support drums (36) and thereby results in a peripheral discontinuity in the mandrel means support surface. The belt guide assembly may also incorporate a roller (39) to maintain tension in the belt (37) irrespective of the spacing of the support drums (36). Cutter means may be provided to cut a wound tubular article in the vicinity of the support surface discontinuity.Type: GrantFiled: October 7, 1991Date of Patent: March 9, 1993Assignee: Bridgestone/Firestone Inc.Inventor: David J. B. Perkins
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Patent number: 5115659Abstract: A process and an apparatus for producing a component of tires by passing a wire sheet (3) between a pair of gear-shaped rolls (6), (6) in meshing engagement therewith to vertically corrugate the sheet for reforming, the wire sheet (3) comprising wires (4) arranged side by side in a plane and covered with an elastic material (5), and thereafter passing the sheet (3) between a pair of rolls (13), (13) to thereby lay down the reformed vertical corrugations into a planar arrangement.Type: GrantFiled: February 26, 1991Date of Patent: May 26, 1992Assignee: Sumitomo Rubber IndustriesInventor: Masao Takami
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Patent number: 5092946Abstract: A method and an apparatus for sticking a belt-like member, wherein a belt-like member prepared by cutting a raw material of the belt-like member on a conveyor at two front and rear locations, is conveyed by the conveyor, wrapped around a cylindrical drum and stuck to the drum. The inclination angle of the cut line at the leading end of the belt-like member is measured at the time of cutting, the inclination angle of the cut line at the trailing end is measured at the time of cutting, and by comparing the inclination of the cut line at the trailing end with the inclination angle at the leading end, an amount of correction for the inclination angle is calculated.Type: GrantFiled: December 11, 1989Date of Patent: March 3, 1992Assignee: Bridgestone CorporationInventors: Koji Okuyama, Makoto Yamamoto, Akihito Ichinohe
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Patent number: 5055149Abstract: A belt join method, which is used in forming pneumatic radial tires, for joining belt components one upon the other and an apparatus therefor, in which the belt components are centered in such a manner that the center axes thereof are substantially coincident or vertically aligned with one another, by passing through a plurality of longitudinally aligned belt adjusting rollers which are urged by means of a spring.Type: GrantFiled: January 23, 1990Date of Patent: October 8, 1991Assignee: Bridgestone CorporationInventor: Yuichiro Ogawa
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Patent number: 4877468Abstract: A hot tire forming method whereby at least some of the elements constituting each tire are formed starting from respective masterbatches, which are mixed with given chemical compounds inside respective continuous mixers to obtain respective final mixes, which are hot-fed to respective continuous production means, such as extruders, for obtaining semifinished products, which are hot-fed onto a green tire building drum, with the completed green tire then being transferred, hot, to a curing department; the transfer from the continuous mixers to the curing department being performed in such a manner as to preserve, inside each green tire entering the curing department, at least part of the initial mixing thermal energy and at least part of the initial continuous production thermal energy.Type: GrantFiled: May 18, 1987Date of Patent: October 31, 1989Assignee: The Firestone Tire & Rubber CompanyInventor: Karl J. Siegenthaler
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Patent number: 4854032Abstract: A method of manufacturing a steel wire with high tensile strength having improved bending and torsional ductility properties useful as a reinforcement wire or cord, especially for rubber products such as tires, comprising providing steel comprising less than 0.015%, preferably less than 0.010%, and most preferably less than 0.008% by weight sulfur and drawing said steel beyond normal drawing limits into a wire having a tensile strength in N/mm.sup.2 of at least 2250-1130 log d where d is the wire diameter in millimeters, and optionally, depositing a covering layer of rubber adherable material such as brass on the drawn wire.Type: GrantFiled: March 15, 1988Date of Patent: August 8, 1989Assignee: N.V. Bekaert S.A.Inventor: Paul Dambre
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Patent number: 4842682Abstract: A heavy duty low-section pneumatic and a process for manufacturing the same are disclosed. This tire comprises a radial carcass toroidally extending between bead portions, a belt composed of a first and second belt layers successively superimposed around a crown portion of the carcass and a tread rubber having substantially the same width as the maximum width of the belt. In the belt, the first belt layer is composed of at least two cord plies each containing cords inclined at a small angle with respect to the equatorial plane of the tire, the cords of which being crossed with each other with respect to the equatorial plane, while the second belt layer is composed of at least one cord ply containing non-expansible or hardly expansible cords arranged in substantially parallel to the equatorial plane and extends over both sides of the first belt layer between the first belt layer and the carcass.Type: GrantFiled: June 12, 1987Date of Patent: June 27, 1989Assignee: Bridgestone Tire Co., Ltd.Inventors: Norio Iwata, Masao Nakamura, Takashi Takusagawa
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Patent number: 4824501Abstract: To obtain a uniform initial cord tension in an auxiliary layer of a radial tire made up of a toroidal carcass, a belt, the auxiliary layer and a tread rubber, the belt is formed by winding inextensible cords around a drum with a radius of curvature substantially the same as that of a tire tread. Further, when the belt is formed by winding the cords around a flat drum, the auxiliary layer is formed on the belt by winding a heat-shrinkable cord around the belt in spiral fashion in such a way as to apply a higher tension at both the ends of the belt layer than at the center thereof. The radial tire thus manufacture is excellent in high-speed tire durability and tire uniformity, without causing belt separation trouble at high speed.Type: GrantFiled: June 5, 1987Date of Patent: April 25, 1989Assignee: Bridgestone CorporationInventors: Hisao Ushikubo, Toru Tsuda, Ichiro Takahashi
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Patent number: 4731136Abstract: The present process allows recycling used tires which are at present considered to be no longer suitable for restructuring according to known processes.According to the invention a preliminary control is carried out, also by scanning by means of a laser, to assess the seriousness of the internal ruptures and deformations due to impacts or other causes, discarding tires which are too damaged, while the thread and the metallic belts of the remaining tires which can be used are removed therefrom by scraping, the entire tire assembly being reconstructed, by vulcanizing before mounting the tread, and checking again with the laser to detect bubbles or other defects correcting the defects, obtaining a perfect assembly (FIG. 25) on which the tread which is vulcanized again, is lastly mounted.Type: GrantFiled: July 30, 1985Date of Patent: March 15, 1988Assignee: T.R.S. Tyres Recycling System S.A.Inventor: Leandro Risi