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.

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.

Abstract: An antistatic driving belt having a durable destaticizing function and long surface life. A cushion rubber layer is disposed between a tension rubber layer and a compression rubber layer, and tension members are buried in the cushion rubber layer. A layer of conductive rubber blended with conductive material and having a high abrasion resistance is arranged on the underside of the cushion rubber layer. The ends of the layer of conductive rubber are exposed on both sides of the belt. Preferably, the conductive rubber layer is formed of rubber containing 5 to 50 parts by weight of conductive material to 100 parts by weight of rubber. The conductive rubber layer should be 0.1 mm or thicker, and should have a thickness less than half the total thickness of the compression layer.

Abstract: The flat drive belt has a layered build-up comprising at least one tensile layer (1) which has a modulus of elasticity of 20,000-250,000 N/mm.sup.2 and which is positively embedded between two thermoplastic hot-melt films (3) having a modulus of elasticity of 40-600 N/mm.sup.2. Friction layers or friction structures (4) of an elastomer material having a modulus of elasticity of 2-40 N/mm.sup.2 are built up on the hot-melt films (3).The individual layers of the flat drive belt can be produced with high precision and, as a composite, form a sheet-like structure which is very regular with respect to thickness and weight per unit area. The starting material, produced as meter ware, for the flat drive belt can be cut without effort by the user from rolls and can be joined under the action of pressure and heat into a continuous form, without thickenings and joint gaps, in the way required for the kinematic behavior of fast-running drive belts.

Abstract: A power transmission belt wherein at least a portion thereof is formed as a composite of 1 to 100 parts by weight of whiskers distributed in 100 parts by weight of rubber. The composite may form the compression section of the belt. The composite may be utilized as impregnating rubber for a fabric cover portion of the belt. The whiskers preferably have a diameter in the range of approximate 0.1 micron to 1.0 micron, and a length of approximately 10 microns to 500 microns. In the illustrated embodiment, the whiskers are acicular single crystal whiskers.

Abstract: A reinforced rubber mixture composed of (A) at least one natural, styrene/butadiene, polybutadiene, polyisoprene, transpolyoctenylene, ethylene/propylene/diene terpolymer and butyl rubber, (B) at least one phenol novolak resin and/or reactive polyphenol, (C) curing agents and, if appropriate, (D) customary additives, wherein the rubber mixture contains, as an additional component (E), at least one polar, chlorine-free rubber in the form of nitrile rubber having a nitrile content of at least 32% or polyurethane rubber in a proportion by weight of 1 to 49% by weight, relative to the total amount of rubber. Process for the preparation thereof and the use of the reinforced rubber mixtures for the production of industrial rubber goods, in particular for the production of antivibration units, rubber sleeves, coatings, conveyor belts and tires.

Abstract: A flat reinforcing structure for elastomeric objects such as conveyor belts comprises a first series of parallel cords covered on one side by a second series of parallel cords which with respect to the first series are transversely disposed and whereby the cords are mutually connected at the intersections. The nominal tensile strength of the first series of cords per unit width is at least twice the nominal tensile strength of the second series of cord per unit width. The tensile strength of each cord of the first series is at least one and at most ten times the tensile strength of each of cord of the second series. The cords are preferably steel cords.

Abstract: A torsion damper disc including a disc plate approximately perpendicular to a center line of a central hub and rotatably supported by the central hub having an outward flange; characterized by that plural stopping parts are provided on one of the flange and the disc plate and pressing parts disposed between the stopping parts in a circumferential direction of the disc are provided on the other thereof respectively, a flexible member is laid over and between the stopping parts, the pressing parts are pressed on the flexible member laid between the stopping parts, and a tension of the flexible member is made elastically changeable by interposing an elastic member in at least any one of spaces between the stopping part, the pressing part and the flexible member.

Abstract: A belt comprising a copolymer rubber and fibers and having strong adhesion strength even after heat-aging in air or oil and repeated deformation. The copolymer rubber has in its polymer chain (1) 10 to 60% by weight of units derived from an unsaturated nitrile, (2) 0 to 30% by weight of units derived from a conjugated diene and (3) 10 to 90% by weight of units derived from an ethylenically unsaturated monomer other than unsaturated nitriles and/or units formed by hydrogenating units derived from a conjugated diene.

Abstract: An elastomer coated bias fabric for reinforcing power transmission belts and the like is disclosed wherein one surface of the fabric is provided with an uncured, tacky, elastomeric composition. The fabric is prepared by pre-impregnating the fabric, transversely stretching the fabric on a tenter frame, coating a latex composition on both surfaces of the fabric while maintaining the fabric in its transversely stretched condition, and after drying the fabric, overcoating one surface only of the coated fabric with a tackified, latex composition which may contain a chemical linking agent which enhances the bond between the elastomer and the fabric by forming a chemical bridge between them. A method for manufacturing coated fabric is also disclosed.

Abstract: An endless power transmission belt construction having power transmitting contact faces and method of making the same are provided, the belt construction comprising an axial tensioning unit, a plurality of lateral stiffening units carried by the tensioning unit, and friction material carried by the units, the tensioning unit and the stiffening units being formed of material that provides an axial and lateral stiffness in excess of that normally provided by polymeric friction material that normally forms the main body of a belt construction that is reinforced with such a tensioning unit and stiffening units.

Abstract: An elastomer coated bias fabric for reinforcing power transmission belts and the like is disclosed wherein one face of the fabric is provided with an uncured, tacky, carboxylated elastomeric composition. In one embodiment, the fabric is prepared by pre-impregnating the fabric with a neoprene latex composition followed by coating the neoprene composition on both faces of the fabric, and after drying the fabric, overcoating one face only of the coated fabric with a tackified, carboxylated neoprene latex composition. A method and apparatus for manufacturing the coated fabric is also disclosed.

Abstract: A polymeric-coated fabric layer, product utilizing the layer and a method of making such layer are provided, the layer having opposed surfaces one of which is adapted to be secured to a surface of a polymeric product and the other of which is adapted to be a contact face for the product and comprising a fabric layer having opposed sides, and two layers of polymeric material secured in stacked relation to one of the sides of the fabric layer with the outer layer of polymeric material defining the one surface of the polymeric-coated fabric layer, only the intermediate polymeric layer initially having a slip agent therein that under certain conditions will migrate through the outer polymeric layer to the outer surface thereof to provide a degree of reduction in the surface coefficient of friction for the contact face of the product.

Abstract: A polymeric-coated fabric layer, product utilizing the layer and a method of making such layer are provided, the layer having opposed surface one of which is adapted to be secured to a surface of a polymeric product and the other of which is adapted to be a contact face for the product and comprising a fabric layer having opposed sides, and two layers of polymeric material secured in stacked relation to one of the sides of the fabric layer with the outer layer of polymeric material defining the one surface of the polymeric-coated fabric layer, only the intermediate polymeric layer initially having a slip agent therein that under certain conditions will migrate through the outer polymeric layer to the outer surface thereof to provide a degree of reduction in the surface coefficient of friction for the contact face of the product.

Abstract: A material for use in agricultural belting. The material includes a center ply fabric with a relative resistance to stretching, and two outer fabric plies in spaced relation to the center ply, these outer fabric plies offering less resistance to stretching, but a greater flex fatigue life, than the fabric of the center ply. The outer fabric plies include fill yarns including extruded monofilament yarns which impart relative transverse stiffness to the material.

Abstract: An elastomer coated bias fabric for reinforcing power transmission belts and the like is disclosed wherein one surface of the fabric is provided with an uncured, tacky, elastomeric composition. The fabric is prepared by pre-impregnating the fabric, transversely stretching the fabric on a tenter frame, coating a latex composition on both surfaces of the fabric while maintaining the fabric in its transversely stretched condition, and after drying the fabric, overcoating one surface only of the coated fabric with a tackified, latex composition which may contain a chemical linking agent which enhances the bond between the elastomer and the fabric by forming a chemical bridge between them. A method for manufacturing coated fabric is also disclosed.

Abstract: This invention relates to a flexible article comprising rubberlike body having a surface hard film, e.g., a hose, a handrail, a belt or a diaphragm, wherein a fiber layer comprising non-woven or woven fabrics is positioned between the surface hard film and the rubberlike body by use of an adhesive to eliminate generation of the so-called joint cracking phenomenon, i.e., extension of cracking to the rubberlike body accompanying cracking at the hard film caused by any shock.

Abstract: A chain-belt adapted for use in a pulley drive system and comprising a plurality of connected ranks or sets of interleaved links having generally trapezoidal load blocks between adjacent pivot means which join the adjacent ranks or sets of links together to permit articulation of the chain belt. The load blocks are of generally laminated construction of a plurality of plates and resilient means are located between adjacent plates in at least some of the load blocks. Preferably an elastomeric material such as rubber is chosen as the resilient means and each load block incorporates the resilient means.The structure is effective to reduce noise generated upon engagement and disengagement of the chain-belt with the pulley flanges when compared to a chain-belt of connected ranks of links and with laminated load blocks therein but without the resilient means.

Abstract: A method of making an arched endless belt and belt made employing the method are provided wherein the method comprises the steps of disposing in tubular form a plurality of uncured belt-defining layers with the layers being adapted to define corresponding sections of the belt and curing the layers in a controlled environment to define the belt having a longitudinal axis and an arched configuration relative to the axis wherein prior to the disposing step the method comprises wrapping a shaping material consisting of an uncured gum material around a belt building device and the disposing step comprises wrapping the plurality of layers against the shaping material so that during the curing step the shaping material and controlled environment cooperate to define the arched configuration of the belt including all of its layers and during the curing step the shaping material is bonded to the layers and comprises an inner portion of the belt with the cured gum shaping material serving as a crack barrier for such inn

Abstract: Three-ply belting having improved dimensional stability, flexing characteristics, and elongation characteristics is disclosed. The center ply of the belt comprises a first synthetic fabric, while each outer ply comprises a second synthetic fabric. The modulus and flex fatique life of the second synthetic fabric are respectively greater than the modulus and flex fatique life of the first synthetic fabric. Belting in accordance with the present invention is useful in agricultural applications.

Abstract: A cover fabric for a V belt having increased flex and wear-life, and a method of making the cover fabric. A fabric is bias cut into a continuous strip of fabric. The individual fibers in the continuous strip are impregnated with an elastomeric polymeric material effective to increase the flex and wear-life of the fabric when used as a cover fabric for V belts. This impregnation is accomplished by immersing the strip in a fluid mix having a viscosity of about 2000 cps or less, the mix including a fluid carrier, an elastomeric polymer (e.g. a polychloroprene compound) and a dark pigment. A coating of an elastomeric polymer (e.g. another polychloroprene compound) is applied to the strip, the strip is stretched in its width direction to increase the angular relation of the threads of the fabric relative to its longitudinal axis, and the thus coated strip is dried. The continuous strip is ultimately slit longitudinally of itself into a plurality of tapes, and the tapes are used to cover a V belt.

Abstract: A construction and method of manufacture of a feed belt are presented wherein the belt is an endless body of elastomeric material reinforced with a fabric sleeve and having a toothed inner surface and a non-toothed outer surface, the inner and outer surfaces being treated so that the outer surface has a significantly higher coefficient of friction than the inner surface.

Abstract: An endless power transmission belt having a compression section, a load-carrying section and a tension section, comprising a plurality of layers of rubber-impregnated fabric having transverse corrugations molded therein to provide a belt having increased transverse rigidity.

Abstract: An endless power transmission belt is provided which comprises a first portion defining the bottom surface of the belt and comprising a plurality of laterally spaced power transmitting ribs and a groove between each adjacent rib, a second portion bonded to the first portion and acting as a tie band therefor and for the third portion which defines the top surface of the belt and also comprises a plurality of laterally spaced power transmitting ribs and a groove between each adjacent rib. The third portion is symmetrical with the first portion and the grooves in each portion provide a relief area between the ribs to allow debris to work through the tie band and become discharged.

Abstract: A self orienting power transmission belt is provided which has a round cross-section and a triangular core. The belt is constructed by wrapping a rubberized fabric about a triangular core comprising a plurality of longitudinally extending load-carrying members embedded in a rubber compound, and curing the resulting wrapped core in a curing mold having a round cross-section. This belt is particularly useful in a multi-planar drive system.