Additional Material Is Rubber Patents (Class 474/271)
  • Publication number: 20140323256
    Abstract: A friction transmission belt has a belt body made of a rubber composition and wrapped around pulleys to transmit power. The belt includes a thermoplastic resin film provided to coat a pulley contact surface of the belt body, and a powder layer comprised of reduced friction coefficient powder particles provided on a surface side of the thermoplastic resin film. The powder layer includes powder particles buried in the thermoplastic resin film, powder particles carried and exposed on the surface of the thermoplastic resin film, and powder particles agglomerated and adhering to the powder particles carried and exposed on the surface of the thermoplastic resin film.
    Type: Application
    Filed: July 9, 2014
    Publication date: October 30, 2014
    Inventor: Keisuke Yoshida
  • Patent number: 8568260
    Abstract: Toothed belt for use with oil comprising a body and a plurality of teeth extending from at least a surface of the body; the teeth are covered by a coating fabric. The toothed belt comprises a plurality of resistant inserts produced from at least a first and a second material. Preferably, the resistant inserts are constituted by glass fibers and carbon fibers. Preferably, a resistant layer is made to adhere over the coating fabric, said layer comprising a fluorine based plastomer with the addition of an elastomeric material, wherein the plastomer is present in a greater amount than the elastomeric material. The elastomeric material forming the body of the belt is preferably a copolymer obtained from a diene monomer and a monomer containing nitrile groups, wherein the nitrile groups are between 33% and 49%, preferably 39 weight % with respect to the copolymer.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: October 29, 2013
    Assignee: Dayco Europe S.r.l.
    Inventors: Carlo Baldovino, Marco Di Meco, Tommaso Di Giacomo, Marino Petaccia
  • Patent number: 8308592
    Abstract: The present invention is directed to a treadmill belt with foamed cushion layer and method of making same. In one embodiment, the treadmill belt includes a fabric base layer and a foamed cushion layer foamed on and integral with the fabric base layer. The foamed cushion layer includes a thermoplastic composition and has a Shore A hardness of about 20 to about 80. In one example, the first foamed cushion layer is from about 0.05 inches to about 0.35 inches thick. The thermoplastic composition, prior to being foamed, includes about 1 part to about 5 parts of a foaming agent, e.g., a chemical foaming agent, based on 100 parts thermoplastic material, e.g., polyvinyl chloride. An outer wear layer is securely adhered on the foamed cushion layer to sandwich the foamed cushion layer between the fabric base layer and outer wear layer thereby defining the treadmill belt.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: November 13, 2012
    Assignee: Veyance Technologies, Inc
    Inventors: Peter E. Radding, Steven Wayne Mutch
  • Patent number: 8142316
    Abstract: A belt has a compression section, a tension section, and a load carrying section disposed between the compression section and the tension section. The belt has an elastomeric/thermoplastic material, the elastomeric/thermoplastic material has 50 to 90 parts per hundred of an elastomer and 10 to 50 parts per hundred thermoplastic.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: March 27, 2012
    Assignee: Veyance Technologies, Inc.
    Inventors: Larry Dean Goettsch, Jeffrey Dwight Lofgren
  • Patent number: 8096925
    Abstract: The present invention is directed to a treadmill belt with foamed cushion layer and method of making same. In one embodiment, the treadmill belt includes a fabric base layer and a foamed cushion layer foamed on and integral with the fabric base layer. The foamed cushion layer includes a thermoplastic composition and has a Shore A hardness of about 20 to about 80. In one example, the first foamed cushion layer is from about 0.05 inches to about 0.35 inches thick. The thermoplastic composition, prior to being foamed, includes about 1 part to about 5 parts of a foaming agent, e.g., a chemical foaming agent, based on 100 parts thermoplastic material, e.g., polyvinyl chloride. An outer wear layer is securely adhered on the foamed cushion layer to sandwich the foamed cushion layer between the fabric base layer and outer wear layer thereby defining the treadmill belt.
    Type: Grant
    Filed: January 8, 2008
    Date of Patent: January 17, 2012
    Assignee: Veyance Technologies, Inc.
    Inventors: Peter E. Radding, Steven Wayne Mutch
  • Patent number: 8030404
    Abstract: The present invention is directed to the incorporation of functionalized polyethylenes, in amount of about 1% to 95% by weight based upon the weight of the total crosslinkable material, into ethylene alpha olefin elastomers, such as EPDM elastomer compositions, which are crosslinked by peroxides, which results in improved properties, such as hardness and modulus of elongation, and can result in improved higher abrasion resistance, wear resistance, coefficient of friction, tensile strength, and other properties through a broad temperature range, which are beneficial to power transmission products, such as power transmission belts.
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: October 4, 2011
    Assignee: Veyance Technologies, Inc.
    Inventors: Thomas George Burrowes, Michael John William Gregg
  • Patent number: 7985152
    Abstract: Described herein is a toothed belt comprising a body made of elastomeric material, in which there is embedded a plurality of longitudinal filiform resistant inserts or cords, and a toothing coated with a coating fabric; on top of the coating fabric there is made to adhere a resistant layer, which increases resistance to wear of the toothed belt and comprises a fluorine-based plastomer with addition of elastomeric material, in which the plastomer is present in a larger amount than is the elastomeric material and in which the majority of the particles constituting the fluorine-based plastomer have a size less than 10 ?m. The resistant layer is applied directly on the fabric via spreading. The fluorinated plastomer preferably has a base of polytetrafluoroethylene compound.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: July 26, 2011
    Assignee: Dayco Europe S.R.L.
    Inventors: Marco Di Meco, Tommaso Di Giacomo
  • Patent number: 7909720
    Abstract: The present invention is directed to timing belts having improved fabric adhesion to the tooth facing can be achieved by the use of a combination of a RFL treated fabric and an EPDM body provided the RFL treatment or the body include ZDA or the RF latex is an X-HNBR latex.
    Type: Grant
    Filed: December 31, 2004
    Date of Patent: March 22, 2011
    Assignee: Veyance Technologies, Inc.
    Inventors: George Burrowes, Mike Gregg
  • Patent number: 7863364
    Abstract: The invention relates to a process for making an article subject to dynamic loading, the process comprises: (i) shaping a polymer-containing composition in the green state, the composition comprising (a) a continuous phase of a polymeric component of at least 15 wt %, based on the total weight of the polymer component of a propylene elastomer having a heat of fusion of less than 70 J/g and an isotactic triad tacticity of 50 to 99% and optionally containing units derived from a diene, the polymeric component having a density of less than 0.9 g/cm3 and (b) from 20 to 120 phr, preferably 30 to 100 phr, most preferably 40 to 90 phr based on the total weight of the polymer component of a reinforcing filler component; and (c) a peroxide curative. The composition is combined with a fibrous reinforcement which is then cured to a cure state as determined by ODR @ 170° C., 30 min MH-ML of from 5 to 80 dNm.
    Type: Grant
    Filed: December 7, 2006
    Date of Patent: January 4, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Alistair Duncan Westwood, Abdelhadi Sahnoune
  • Patent number: 7749120
    Abstract: A power transmission belt. The power transmission belt includes the following: a backing layer; a body having a top surface and a bottom surface, the bottom surface joined with the backing layer, the top surface including a plurality of teeth, and the body including a plurality of reinforcing cords positioned between the top and bottom surfaces; and a fabric material having a top surface and a bottom surface, the bottom surface at least partially embedded in the top surface of the body, the fabric material being a weft knitted structure having N×N ribs, wherein N is at least 2, and the top surface of the fabric material being at least partially exposed at surfaces of the plurality of teeth.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: July 6, 2010
    Assignee: Dayco Products, LLC
    Inventor: Daniel A. Pelton
  • Patent number: 7695386
    Abstract: A fabric or cord is treated with an elastomeric compound comprises 20-80 parts per hundred cross-linkable materials of liquid elastomer. The liquid elastomer has a complex dynamic viscosity less than 5 McP (5,000 N*s/m2) at a temperature between 20° C. and the maximum flow temperature TF, and the elastomeric compound the elastomeric material, prior to cure, has a complex dynamic viscosity of less than 5 McP (5,000 N*s/m2) for at least 2 minutes at a maximum flow temperature TF. The coated fabric and cord materials are useful as facing fabrics for power transmission products.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: April 13, 2010
    Assignee: Veyance Technologies, Inc.
    Inventors: Douglas Bruce Wood, Thomas George Burrowes
  • Patent number: 7655729
    Abstract: The present invention is directed to the incorporation of functionalized polyethylenes, in amount of about 1% to 95% by weight based upon the weight of the total crosslinkable material, into ethylene alpha olefin elastomers, such as EPDM elastomer compositions, which are crosslinked by peroxides, which results in improved properties, such as hardness and modulus of elongation, and can result in improved higher abrasion resistance, wear resistance, coefficient of friction, tensile strength, and other properties through a broad temperature range, which are beneficial to power transmission products, such as power transmission belts.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: February 2, 2010
    Assignee: Veyance Technologies, Inc.
    Inventors: George Burrowes, Mike Gregg
  • Publication number: 20090137355
    Abstract: A coating liquid for coating glass fiber codes, containing: a chlorophenol-formaldehyde condensate (A) obtained by condensing a chlorophenol (D) and formaldehyde (E) in water; an emulsion of a vinylpyridine-styrene-butadiene copolymer (B); and an emulsion of a chlorosulfonated polyethylene (C).
    Type: Application
    Filed: March 29, 2007
    Publication date: May 28, 2009
    Applicant: Central Glass Company, Limited
    Inventors: Katsuhiko Ogaki, Toshiya Monden, Takafumi Iwano
  • Patent number: 6945891
    Abstract: A power transmission belt, and more particularly a toothed power transmission belt, comprising a longitudinally extending tensile member composed of one or more carbon fiber cords, wherein the belt exhibits belt growth of not more than 0.1% based on its original length after 48 hours under High Temperature Belt Growth Analysis performed at 100° C., a method for producing such belts exhibiting reduced belt growth, and a method for reducing the angular vibration of a camshaft in relation to a crankshaft in an internal combustion engine wherein the camshaft is driven by a timing belt.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: September 20, 2005
    Assignee: The Gates Corporation
    Inventor: Paul S. Knutson
  • Patent number: 6866922
    Abstract: A power transmission belt having a body with a length, a width, an inside, and an outside. The body includes a rubber composition. The body further has a plurality of short fibers in the rubber composition. The plurality of short fibers may include a plurality of poly-p-phenylene benzobisoxazole fibers.
    Type: Grant
    Filed: March 27, 2003
    Date of Patent: March 15, 2005
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Takeshi Takehara, Hitoshi Hasaka, Takeshi Kimura, Yasutsugu Kunihiro, Toshimichi Takada
  • Patent number: 6737461
    Abstract: A vulcanizate derived from a polymer composition comprising three components exhibits improved hot air aging properties and is useful, for example, for the manufacture of articles subject to dynamic loading, such as belting applications. The first component is a polymer having a main polymer chain derived from: (i) at least about 30% by weight of a first monomer which introduces at least one of a secondary carbon and a tertiary carbon to the backbone, and (ii) from 0 to about 70% by weight of at least one other monomer. Preferred are ethylene-alpha-olefin copolymers. The second component is a salt of a strong base and a weak acid, the salt comprising a metal selected from Group I of the Periodic Table of Elements. The third component is an antioxidant.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: May 18, 2004
    Assignee: Bayer Inc.
    Inventors: Judy Hannay, Harald Bender
  • Patent number: 6695733
    Abstract: A power transmission belt, and more particularly a toothed power transmission belt, comprising a longitudinally extending tensile member composed of one or more carbon fiber cords, wherein the belt exhibits belt growth of not more than 0.1% based on its original length after 48 hours under High Temperature Belt Growth Analysis performed at 100° C., and a method for producing such belts exhibiting reduced belt growth.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: February 24, 2004
    Assignee: The Gates Corporation
    Inventor: Paul S. Knutson
  • Patent number: 6669591
    Abstract: This invention relates to power transmission belts and to a rubber composition for use therein. The composition contains from 90 to 10 phr alkylated chlorosulfonated polyethylene and 10 to 90 phr ethylene vinyl acetate.
    Type: Grant
    Filed: November 8, 2000
    Date of Patent: December 30, 2003
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Paul Norman Brinkman, Thomas George Burrowes
  • Patent number: 6427728
    Abstract: A belting (10) reinforced with at least one fabric ply (16). The fabric ply (16) is a composite fabric (26). The fabric (26) has two woven layers (28, 30) and an intermediate third layer of straight warp yarns (34). The woven layers (28, 30) and straight warp yarns (34) are bound together by a plurality of binder yarns (38). Each layer (28, 30, 34) of the fabric (26) contributes substantially 25-40% to the overall strength of the fabric (26). The composite fabric (26) may be used in a multi-ply belting (10) for heavy duty applications; wherein the fabric ply (26) is the center ply (16) and provides approximately 50 to 75% of the overall belting strength. The fabric (26) may also be used as a single reinforcing ply for light duty application belting.
    Type: Grant
    Filed: December 14, 1999
    Date of Patent: August 6, 2002
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: David Joseph Maguire, Jenny Zhaoxia Yu, Frederic Pember Andresen
  • Patent number: 6358170
    Abstract: A power transmission belt having as the main constituent a rubber composition which comprises not less than 50% by weight, on the total polymer component basis, of an ethylene/&agr;-olefin/diene terpolymer with sulfur incorporated therein as a curing or vulcanizing agent.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: March 19, 2002
    Assignee: Bando Chemical Industries Ltd.
    Inventor: Katsuyoshi Fujiwara
  • Patent number: 6303215
    Abstract: Disclosed is a transfer belt for an electro-photographic apparatus, comprising a seamless reinforcing layer made of a continuous string, and a semi-conductive rubber layer formed on the reinforcing layer.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: October 16, 2001
    Assignee: Kinyosha Co., Ltd.
    Inventors: Saburo Sonobe, Akio Onuki
  • Patent number: 6007897
    Abstract: A toothed belt has a plurality of teeth, which are arranged in the longitudinal direction thereof, and cords embedded in a back portion of the toothed belt. A facing fabric is covered over the teeth. The fabric used for the facing fabric is coated with latex. The solid deposition of latex is adjusted to between 50 and 200 wt % with respect to the weight of the base cloth.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: December 28, 1999
    Assignee: Unitta Company
    Inventors: Toshitaka Tamaki, Junji Yokoi
  • Patent number: 5941168
    Abstract: A baler including a plurality of endless belts and opposing side walls defining therebetween a chamber for receiving forage material and forming a bale. Each of the belts is formed as a full width belt extending substantially a transverse distance from one of the side walls to the other of the side walls. In order to maintain proper tracking of the full width belts, a drive roller for each of the belts is formed with a sleeve centrally located on the drive roller and defining a crown for the roller, as well as improving traction between the roller and the belt. In addition, each of the full width belts is formed with a differential stiffness wherein the belt exhibits a greater stiffness against bending about an axis perpendicular to the rollers than the stiffness against bending about an axis parallel to the rollers.
    Type: Grant
    Filed: April 14, 1998
    Date of Patent: August 24, 1999
    Assignee: AGCO Corporation
    Inventors: Leroy M. Kluver, Robert A. Stelzer, Eric W. Clausen
  • Patent number: 5891561
    Abstract: A component for a power transmission belt. The component is a fiber cord that is treated in a first step with at least one of a) an isocyanate compound and b) an epoxy compound such that after the first step the at least one of the isocyanate compound and epoxy compound is present in solid form in an amount equal to 0.5 to 2.0 weight %. The fiber cord is treated after the first step in a second step with an RFL liquid so that the percentage void in the cord, as determined by the following formula, is not greater than 1.5%:percentage void=100.times.A.sub.y /A.sub.x, where A.sub.x is the total surface area of the cord and A.sub.y is the void area.
    Type: Grant
    Filed: December 6, 1996
    Date of Patent: April 6, 1999
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Takashi Kinoshita, Hitoshi Hasaka
  • Patent number: 5860883
    Abstract: A power transmission belt has a body with a) a cushion rubber layer and b) a compression rubber layer disposed on the cushion rubber layer. The cushion rubber layer has load carrying cords embedded therein and a first rubber composition including a hydrogenated nitrile rubber, an unsaturated carboxylic acid metal salt, silica, and inorganic peroxide. The compression rubber layer has a second rubber composition including a hydrogenated nitrile rubber, an unsaturated carboxylic acid metal salt, and an organic peroxide.
    Type: Grant
    Filed: April 25, 1997
    Date of Patent: January 19, 1999
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Hiroshi Jonen, Yoshiaki Onaka, Takehiko Ito, Hideaki Kawano, Yukitoshi Kanai
  • Patent number: 5843258
    Abstract: A method of joining a woven fabric on a power transmission belt and transferring an identifying mark thereon by providing a discrete sheet element with an identifying mark thereon, providing a woven sheet having spaced ends, abutting the spaced ends of the woven sheet to each other, placing the discrete sheet element over the abutted ends of the woven sheet, adhering the discrete sheet element to the abutted ends of the woven sheet, and combining the woven sheet with the discrete sheet element adhered thereto with at least one other component to produce an unvulcanized power transmission belt/belt sleeve, wherein the surface of the power transmission belt defined by the woven sheet is characterized by the absence of any recessed or stepped portions.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: December 1, 1998
    Assignee: MBL (USA) Corporation
    Inventor: Satoshi Murakami
  • Patent number: 5794487
    Abstract: A robot with a base, a first link connected to the base by a shoulder joint, and a second link connected to the first link by an elbow joint. A shoulder motor drives the shoulder joint, and an elbow motor drives the elbow joint. An upper elbow pulley is coupled to the first link. An end effector pulley coupled to the upper elbow pulley, and a dual-bladed end effector driven by the end effector pulley. The diameter of the upper elbow pulley and the diameter of the end effector pulley are related by a 1:2 ratio. Ferro-fluid seals are used to seal each joint. A static seal joins the seams of the links. Each arm link has a particle filter. The robot can communicate electrical signals through the revolute joints with a conductive slip-ring assembly. Alternately, the joint may have an inner cylinder and an outer cylinder, and a cable may be coiled between the cylinders.
    Type: Grant
    Filed: October 23, 1995
    Date of Patent: August 18, 1998
    Assignee: Smart Machines
    Inventors: Todd R. Solomon, Donald J. Thomas, Gerard J. Labonville
  • Patent number: 5778730
    Abstract: A robotic arm utilizing two pulleys connected by two metallic drive bands wound in opposite directions and rotatably attached to the pulleys. The metallic drive bands may include multiple metal strips separated by a visco-elastic material. One end of one drive band is attached to the pulley by a pin. A positioning mechanism is provided to adjust the tension of the band. The positioning mechanism includes a retaining piece, a wedge piece and an adjustment piece. The retaining piece is laterally movable and has an attachment point to the metal band and a slanted face. The wedge piece is vertically-movable and has a face abutting the slanted face of the retaining piece. The adjustment piece attaches the wedge piece to the pulley and moves the wedge piece vertically.
    Type: Grant
    Filed: July 9, 1996
    Date of Patent: July 14, 1998
    Assignee: Smart Machines
    Inventors: Todd R. Solomon, Alexander H. Slocum
  • Patent number: 5776026
    Abstract: A top fabric 2 which is disposed on the back face of a power transmission belt 1 is obtained by joining a plurality of rubberized fabric pieces 2a, in each of which warps 7 and wefts 8 intersect each other at an obtuse angle which is open toward the direction of the length of the belt, in the shape of a ring. Joining lines of adjacent fabric pieces 2a, 2a both intersect at a right angle with respect to the direction of the length of the belt and are parallel to each other.
    Type: Grant
    Filed: September 20, 1996
    Date of Patent: July 7, 1998
    Assignee: Bando Chemical Industries, Ltd.
    Inventors: Yoshitaka Tajima, Sizuaki Tsuruta, Hirotaka Hatai, Takamitsu Akashi
  • Patent number: 5741198
    Abstract: A toothed belt includes a back rubber in which is embedded a tensile body, and toothed rubber, wherein a toothed sheet is glued on an exposed toothed surface of the toothed rubber. The back rubber and the toothed rubber are formed such that a rubber composition, which compounds partial hydrogenated nitrile rubber with iodine having a value of from 12 to 20, a sulfur-based crosslinking agent and a vulcanization accelerator, is cured and molded, wherein a vulcanization accelerator is compounded in a specified ratio of tellurium dithiocarbamate compound, zinc dithiocarbamate compound, tetramethylthiuram disulfide and tetraethylthiuram disulfide.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: April 21, 1998
    Assignee: Tsubakimoto Chain Co.
    Inventors: Toru Fujiwara, Yoshinori Itoh, Masato Tomobuchi
  • Patent number: 5711734
    Abstract: A compression rubber layer of a V-belt is made of an alkylated chlorosulfonated polyethylene composition in which a value of tan .delta. is 0.08 to 0.15 under conditions of a temperature of 100.degree. C. and a frequency of 10 Hz. Thus, production of a crack during the running of the belt is restricted. The alkylated chlorosulfonated polyethylene composition is composed of 0.6 to 1.2 weight % sulfur-contained alkylated chlorosulfonated polyethylene of 100 weight parts, N,N'-m-phenylene dimaleimide of 0.2 to 5.0 weight parts, dipentamethylene thiuram tetrasulfide of 0.1 to 4.0 weight parts and pentaerythrite of 0.1 to 5.0 weight parts.
    Type: Grant
    Filed: November 26, 1996
    Date of Patent: January 27, 1998
    Assignee: Bando Chemical Industries, Ltd.
    Inventors: Tsutomu Shioyama, Katsuya Yamaguchi
  • Patent number: 5712034
    Abstract: A rubber article has a body consisting of rubber and a reinforcement structure with cables embedded in the rubber body. The cables have at least one inner layer with at least one first filament wherein at least one first filament consists of a metallic alloy. The outermost layer has second filaments embedded adhesively in the rubber body. All of the first and second filaments that consist of a metallic alloy are coated with a corrosion-protective coating. The corrosion-protective coating for at least one of the first filaments consists of an intrinsically conductive polymer.
    Type: Grant
    Filed: June 26, 1996
    Date of Patent: January 27, 1998
    Assignee: Continental Aktiengesellschaft
    Inventors: Hendrik Stevens, Bernd Kaiser, Klaus Kleinhoff
  • Patent number: 5682795
    Abstract: A robotic arm utilizing two pulleys connected by two metal drive bands wound in opposite directions and rotatably attached to the pulleys. The metal drive bands may include multiple metal strips separated by a visco-elastic material. One end of one drive band is attached to the pulley by a pin. The pin has a laterally movable retaining piece with a slanted face having an attachment point connected to one end of the metal band, a vertically movable wedge piece with a face abutting the slanted face, and an adjustment piece which attaches the wedge piece to the pulley and moves the wedge piece vertically.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: November 4, 1997
    Assignee: Smart Machines
    Inventors: Todd R. Solomon, Alexander H. Slocum
  • Patent number: 5645504
    Abstract: A power transmission belt with a body of belt material and belt teeth formed of the body and covered with a knitted fabric with a 1.times.1 rib construction.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: July 8, 1997
    Assignee: The Gates Corporation
    Inventor: William L. Westhoff
  • Patent number: 5630770
    Abstract: A toothed belt includes a tensile body embedded therewithin and the tooth surface thereof coated with a tooth sheet, wherein the tooth sheet is treated by RFL solution including inorganic pigments. The toothed belt, after treatment by RFL solution, forms an RFL solution impregnated layer at the tooth surface thereof. Resorcin and formaldehyde are compounded in the mole ratio of 1:1 to 1:3, while resorcin and formaldehyde are compounded with latex in the weight ratio of 1:5 to 1:15. Solid content of RFL solution is compounded with inorganic pigments in the weight ratio of 20:1 to 1:2. The inorganic pigment is selected from those other than black colored series.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: May 20, 1997
    Assignee: Tsubakimoto Chain Co.
    Inventors: Toru Fujiwara, Tatsuo Arai, Yoshinori Itoh
  • Patent number: 5610217
    Abstract: Elastomeric compositions for incorporation in articles subject to dynamic loading, comprising an ethylene-alpha-olefin elastomer which is reinforced with a filler and a metal salt of an .alpha.-.beta.-unsaturated organic acid. This composition is cured using a free-radical promoting material. The invention includes articles subject to dynamic loading incorporating these elastomeric compositions, and belting, including power transmission and flat belting incorporating as their main belt body portions these elastomeric compositions.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: March 11, 1997
    Assignee: The Gates Corporation
    Inventors: Larry Yarnell, Bobbie E. South
  • Patent number: 5609541
    Abstract: A facing fabric covering tooth faces of tooth rubber layers of a belt body is treated with a rubber composition in which hydrogenated acrylonitrile-butadiene rubber is mixed with N,N'-m-phenylenedimaleimide.
    Type: Grant
    Filed: March 16, 1995
    Date of Patent: March 11, 1997
    Assignee: Bando Chemical Industries, Ltd.
    Inventors: Hiroyuki Tachibana, Mitumori Kasada, Kimichika Ohno
  • Patent number: 5599246
    Abstract: A toothed belt includes a rubber composition-molded cured material, a tensile body embedded therewithin, and a tooth sheet. The rubber composition-molded cured material includes 0.38 to 0.91 g of organic peroxide, based on --O--O-linkage amount, to 100 g of a polymer composition in which zinc polymethacrylate and hydrogenated nitrile rubber with hydrogenation rate of 90 to 95% are compounded in the weight ratio of from 4:96 to 20:80, 0.5 to 2.0 g of more than one higher organic acid esters, 0.5 to 2.0 g of maleimide compound, and 20 to 40 g of calcium carbonate.
    Type: Grant
    Filed: March 15, 1995
    Date of Patent: February 4, 1997
    Assignee: Tsubakimoto Chain Co.
    Inventors: Toru Fujiwara, Yoshinori Itoh, Masato Tomobuchi
  • Patent number: 5498212
    Abstract: A power transmission belt having a body with a length and laterally oppositely facing pulley engaging surfaces. The body has at least a portion thereof that is made from rubber. Aramid fibers are embedded in the rubber portion of the body in an amount of 5-20 parts by weight, and more preferably 8-15 parts by weight, of aramid fiber per 100 parts by weight of rubber.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: March 12, 1996
    Assignee: Mitsuboshi Belting Ltd.
    Inventor: Toshimi Kumazaki
  • Patent number: 5484341
    Abstract: An improved wear resistant toothed belt for enhancing the service life of such belt against chipping of the teeth of such belt such toothed belt having stretching members disposed at the center portion thereof, a tooth portion and a back portion, the tooth surface of the tooth portion being covered with a tooth cloth impregnated with an RFL solution and further impregnated with a rubber paste, the rubber paste containing carbon in an amount of 10 phr or less relative to polymer, the amount of solid content of the RFL solution stuck on the tooth cloth being in the range of 3 to 20 wt % relative to the weight of the tooth cloth, and the amount of the solid content of the rubber paste stuck on the tooth cloth is in the range of from 6 to 18 wt % relative to the weight of the tooth cloth.
    Type: Grant
    Filed: February 2, 1995
    Date of Patent: January 16, 1996
    Assignee: Tsubakimoto Chain Co.
    Inventors: Toru Fujiwara, Yoshinori Itoh, Masato Tomobuchi
  • Patent number: 5478638
    Abstract: A reinforced conveyor belt especially suited to transport sharp objects such as glass and scrap metal. The belt has a top and bottom layer of flexible, abrasion-resistant material, such as rubber. There is a middle layer of woven, multi-layered fabric, preferably made of cotton threads with reinforcing rods interwoven therein. The reinforcement rods run transversely and occupy sites in the intermediate layers of the fabric normally occupied by weft threads. Interweaving the layers of fabric and inserting the rod into one of the intermediate fabric layer provides the belt with tensile strength, puncture resistance, and a barrier against longitudinal tearing. Finally, the bottom surface of the belt is textured to provide additional durability and traction.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: December 26, 1995
    Inventors: Gary B. Springer, John E. Hayes, Jr.
  • Patent number: 5478286
    Abstract: There is provided a synchronous belt with excellent heat resistance and excellent abrasion resistance, in which a backing rubber is composed of a rubber composition obtained by vulcanizing hydrogenated nitrile rubber with an organic peroxide. At least the lowermost layer of a tooth rubber is composed of a hydrogenated nitrile rubber composition obtained through both sulfur vulcanization and peroxide vulcanization. The coating rubber on a facing fabric is composed of a rubber composition obtained through sulfur vulcanization. The above rubber composition of the tooth rubber is obtained by adding, to every 100 g of hydrogenated nitrile rubber, 0.3 to 10 g of sulfur-containing vulcanizing agent and 0.002 to 0.025 mol of organic peroxide.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: December 26, 1995
    Assignee: Bando Chemical Industries, Ltd.
    Inventors: Naoki Hamano, Tomoko Hamano, Tsutomu Shioyama
  • Patent number: 5436045
    Abstract: Frictional articles useful for power transmission such as frictional drive belts and as non-slip friction surfaces comprised of a matrix of fibers impregnated with a cured and set polyurethane resin.
    Type: Grant
    Filed: November 4, 1993
    Date of Patent: July 25, 1995
    Assignee: Speedfam Corporation
    Inventor: Clinton Fruitman
  • Patent number: 5387160
    Abstract: A rubber composition includes hydrogenated acrylonitrile-butadiene rubber (HNBR), a copper dithiocarbamate salt compound and sulfur. The use of the copper dithiocarbamate salt compound results in the vulcanized rubber composition exhibiting improved heat resistance as compared to a rubber material that does not include the copper dithiocarbamate salt compound. Toothed belts and V-ribbed belts can be made using the rubber composition to produce belts exhibiting improved heat resistance.
    Type: Grant
    Filed: February 9, 1993
    Date of Patent: February 7, 1995
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Masayoshi Nakajima, Kazutoshi Isida, Kazuhiro Takeda
  • Patent number: 5306213
    Abstract: A power transmission belt having a belt body with an inside surface and an outside surface, with the belt body having a compression section and a tension section, spaced outside of the compression section. At least a first part of the tension section is defined by a chlorosulfonated polyethylene rubber composition having a chlorine content of 15 to 30% by weight. At least a second part of the compression section is defined by a rubber composition that is different than the rubber composition of the first part.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: April 26, 1994
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Masayoshi Nakajima, Kazutoshi Ishida, Satoshi Murakami
  • Patent number: 5254050
    Abstract: A power transmission belt having improved service life in high and low temperature environments is disclosed. The power transmission belt includes a compressed rubber layer of a low density chlorosulfonated polyethylene having a straight-chain molecular structure which is formed so that the chlorine content is within the range of about 15 to about 35% by weight. The chlorosulfonated polyethylene can have a sulfur content in the range of about 0.5 to about 2.5% by weight. A magnesium oxide-aluminum oxide solid solution can be admixed with the chlorosulfonated polyethylene. The power transmission belt can also include an adhesion rubber layer made of a chloroprene rubber composition or a hydrogenated acrylonitrile-butadiene rubber composition with at least one tension member at least partially embedded therein.
    Type: Grant
    Filed: March 27, 1991
    Date of Patent: October 19, 1993
    Assignee: Mitsuboshi Belting Ltd.
    Inventors: Masayoshi Nakajima, Kazuhiro Takeda, Kazutoshi Ishida
  • Patent number: 5224905
    Abstract: A power transmission belt with a belt body having a compression section, a load-carrying section, inside and outside surfaces, and laterally spaced pulley-engaging side surfaces. A fabric cover layer is provided on one of the inside, outside and laterally spaced pulley-engaging side surfaces. The fabric cover layer has an uninterrupted, substantially uniform thickness over the entire extent of the fabric layer on the one of the inside, outside and laterally spaced pulley-engaging side surfaces to which it attaches.
    Type: Grant
    Filed: October 7, 1991
    Date of Patent: July 6, 1993
    Assignee: Mitsuboshi Belting Ltd.
    Inventor: Kyoichi Mishima
  • Patent number: 5164241
    Abstract: The invention relates to a transport belt consisting of a fabric-reinforced plastic sheet material having a textile reinforcing layer which extend in the longitudinal direction and is formed from interlaced warp and weft threads. To obtain good overall strength together with a simple structure of the transport belt, it is provided that the reinforcing layer is formed by a strength component in the form of a double pile cloth comprising an upper and a lower fabric which are held together by low, weft-binding pile threads in such a way as to form a tension-resistant unit of upper and lower fabric in which the pile threads, in the event of a bending stress on the transport belt, permit a small degree of recoverable flexibility between the upper and the lower fabric in the warp direction.
    Type: Grant
    Filed: November 19, 1990
    Date of Patent: November 17, 1992
    Assignee: Parabeam Industrie-en Handelsonderneming B.V.
    Inventors: Gilles Andre De La Porte, Peter Van Der Vleuten
  • Patent number: 5030176
    Abstract: A single ply polyester fabric of straight warp construction having at least 200 ends per inch of 1000 denier multifilament yarn in the warp direction and at least 18 picks per inch of 0.4 mm, monofilament yarn in the weft direction with a warp crimp of less than 2%. Preferably, the polyester fabric is impregnated with a nitrile and polyvinylchloride latex and has a polyurethane coating on one surface thereof. The single ply polyester fabric is particularly suitable for use as a belt in an automatic truck loading and unloading system.
    Type: Grant
    Filed: February 8, 1989
    Date of Patent: July 9, 1991
    Assignee: Rolflor Industries, Inc.
    Inventor: Graham L. Hodgetts
  • Patent number: 4846772
    Abstract: A driving rope for use with the printing head carriage of a word processor, a plotter or other compact equipment. The driving rope generally comprises a core rope and a thread formation of resin disposed thereon. Unlike a conventional timing belt, this driving rope is deformable for easy routing and yet assures a positive and accurate shift of the carriage.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: July 11, 1989
    Assignee: Asahi Mini Rope Hanbai Kabushiki Kaisha
    Inventors: Minoru Saruta, Munechika Matsumoto