Abstract: The present disclosure pertains generally to cutting belts, in particular cutting belts having a cable. In certain aspects, this disclosure provides new cutting segments and cable arrangements for cutting belts. In some embodiments, the cutting belt has cable arrangements that resist rotation when under tension. Cutting belts having cable segments positioned radially outward of other cable segments, relative to the central opening of the cutting belt, around at least 60% of the length of the cutting belt, and cutting belts having cable segments with different twist directions are disclosed.

Abstract: A high efficiency belt having reduced bending stiffness while maintaining a high coefficient of friction. The belt includes a backing layer, a rib material layer, and cords embedded within, wherein the coefficient of friction of the high efficiency belt is greater than or equal to 0.03 mm/N times the bending stiffness for belts having a thickness in the range of from 2.6 mm to 4.2 mm. The belt can include a bending stiffness in the range of from about 30 N/mm to about 65 N/mm and an anisotropic modulus of elasticity ratio of between 1.1 and 5.0. Methods of manufacturing the high efficiency belt are also described and can include forming sheets of rib material with parallel aligned reinforcement fibers transverse to the direction of rotation of the high efficiency belt.

Abstract: A method of making a belt including the steps of: (a) helically wrapping a fabric strip of predetermined width on a mandrel at a first helix angle; (b) helically winding a tensile cord onto the mandrel over the fabric at a second helix angle less than the first helix angle; (c) wrapping a sheet or a strip of elastomer material around the mandrel over the tensile cord; and (d) curing the elastomer material under pressure to form a belt sleeve. The mandrel may be grooved for making toothed belts. The fabric strip may be preformed. A resulting toothed belt has a fabric seam spanning several teeth and having a helix angle. The seam may be joined.

Abstract: A belt, configured as a conveyor belt or drive belt, includes at least one traction member having an outer side. The traction member includes at least one of a renewable raw material or a biologically degradable raw material. A coating is disposed on the outer side of the at least one traction member and includes at least one of a renewable raw material, a biologically degradable raw material, or a synthetically produced and biologically degradable raw material.

Abstract: An endless elastomeric belt includes a carcass that includes an elastomeric matrix extending in an endless loop around a circumference of the belt. The matrix has opposite lateral edges defining a width of the matrix, and a carcass cord within the matrix extending in multiple turns around the circumference of the belt. An elongate binder extends around the lateral edges of the matrix generally transverse to the centerline of the body.

Abstract: A flexible endless belt includes cords extending generally lengthwise of the belt in multiple turns. An Outer end of each cord may be located in a position that is not substantially laterally outward of other portion of the laterally outermost turn of the cord so as to prevent fraying of the cord at the outer end. When the belt is received on roller in a baler, the outer ends of the cords lead at least a part of respective transition portions. A carcass for the belt may have a first cord wound in a Z-direction along the length of the belt and comprising at least two threads wound in the Z-direction and a second cord wound in an S-direction along the length of the belt and comprising at least two threads wound in the S-direction.

Abstract: A flexible endless belt includes cords extending generally lengthwise of the belt in multiple turns. An Outer end of each cord may be located in a position that is not substantially laterally outward of other portion of the laterally outermost turn of the cord so as to prevent fraying of the cord at the outer end. When the belt is received on roller in a baler, the outer ends of the cords lead at least a part of respective transition portions. A carcass for the belt may have a first cord wound in a Z-direction along the length of the belt and comprising at least two threads wound in the Z-direction and a second cord wound in an S-direction along the length of the belt and comprising at least two threads wound in the S-direction.

Abstract: An endless elastomeric belt is comprised of one or more reinforcement layers, and one or more elastomeric layers, wherein at least one of the reinforcement layers is formed of strips that are spirally wound forming a helix. A method of making an endless belt is provided and includes the steps of applying a first elastomeric layer on the outer circumferential surface of a belt building mandrel; splicing the ends together; applying a fabric reinforcement layer over the first layer, wherein said reinforcement layer is comprised of a continuous strip which is spirally wound around the mandrel to form a continuous, endless helix, and applying a second elastomeric layer over said fabric reinforcement layer, cutting the layers into one or more belts having a desired width, and then vulcanizing the one or more belts.

Abstract: This invention provides an improved power transmission belt which has a relatively thick rubber backing layer for improved interface with associated pulleys and improved wear resistance. The belt also has an aramid, glass, or other high modulus relatively inextensible cord secured by a layer of fabric.

Abstract: An endless flexible belt track produced from an elastomer comprises a steel cable (30) spirally wound in the thickness of the belt (12) and outer layers embedded in the thickness of the belt and formed successively from the turns (34) of the cable toward the outside, by: a first oblique layer (36) formed from wires that in turn form a first acute angle (A) to a perpendicular to the turns of the cable; a transversal layer (38) formed from wires that in turn form a right angle to the turns of the cable; and a second oblique layer (40) formed from wires that in turn form a second acute angle (B) to a perpendicular to the turns of the cable, the second acute angle (B) extending in the opposite direction to the first acute angle (A). Application to all-terrain vehicles.

Abstract: A flexible conveyor belt having layers of oppositely extending cord members which abut each other at the lateral centerline of the conveyor belt. The angle of the cord members in each successive layer may be opposed to that of the previous layer. The conveyor belt includes an elastomeric body having spaced apart edge portions and a top and bottom surface. An internal stretch limiter, such as an angularly woven fabric, is disposed in the central region of the belt along the lateral centerline of the belt. Because the angle of the cord members in each successive layer are opposed to each other, the belt is strengthened. Because the angled cord members abut each other along the lateral centerline, the sideways forces acting on the belt are negated.

Abstract: A load carrying cord for a power transmission belt. The load carrying cord has a plurality of strands made up of fiber filaments of ethylene-2,6-naphthalate. Each strand has a denier of 500 to 1500. The fiber filaments in each strand are first-twisted in a first direction. The plurality of strands are combined by final-twisting in a second direction oppositely to the first direction. The resulting load carrying cord has a denier of 3,000 to 10,000.

Abstract: A method of making a reinforcing fabric having wide angles between the warp yarns and the weft yarns by helically folding on itself a strip of fabric which has been skewed such that the angle .alpha. between the warp yarns and the weft yarns is from 100.degree. to 140.degree..

Abstract: A carcass for an elastomeric drive belt having at least one layer of wire reinforcement made up of two cables spirally wound on each side of a mid-circumferential plane, one in the S direction and the other in the Z direction.

Abstract: A reinforcing fabric for reinforcing power transmission belts is comprised of a first fibrous web having minimal warp yarns and filler yarns oriented at a desired right lead. A second fibrous web is provided which has minimal warp yarns and filler yarns oriented at a desired left lead. The first and second fibrous webs are interconnected either mechanically, chemically, or both, so that an angle of between 178.degree. and 60.degree. is formed between the filler yarns of the first fibrous web and the filler yarns of the second fibrous web when viewed in the direction of tension on the power transmission belt. The resulting reinforcing fabric may be formed in the belt direction so that banner cutting is eliminated. This makes it possible to make an endless belt with only one splice.

Abstract: A flat type power transmission belt with an embedded tensile member of first and second plies of yarns where a first layer of yarns is disposed at a first helical angle and a second layer of yarns is disposed at an opposite helical angle. A method for making flat belts by making a sleeve and embedding a tensile member therein by winding a first plurality of yarns at a first helical angle and then winding a second plurality of yarns in a second layer at an opposite helical angle.

Abstract: A trapezoidal endless power transmission belt structure is provided which is made primarily of elastomeric material and has a pair of oppositely arranged surfaces disposed in spaced relation to define an outside and inside surface of the belt structure and has a load-carrying section arranged midway between the inside and outside surfaces. The belt structure has a tension section and a compression section which are of similar construction and each is comprised of a plurality of layers including a fiber-loaded layer disposed adjacent the load-carrying section and a fabric layer disposed remote from the load-carrying section; and, the fabric layers and fiber-loaded layers cooperate to assure that the belt structure has longitudinal flexibility yet has transverse rigidity or stiffness sufficient to enable the belt structure to be operated in associated sheaves free of shear planes parallel to the load-carrying section.

Abstract: An endless elastomeric or rubber drive belt includes a body having a mid-circumferential plane and first, second and third ply portions of reinforcement therein. The first ply portion has first cable means oriented substantially parallel to the mid-circumferential plane for carrying tensile loads and defining a second plane contiguous therewith. The second ply portion has second cable means arranged on a positive bias angle and the third ply portion has third cable means arranged on a negative bias angle to the mid-circumferential plane. The second and third ply portions are juxtaposed and constructed differently so as to substantially neutralize the shear stresses in each generated from tensile loading while bending by apportioning their strain levels in approximate proportion to their distances from the second plane.

Abstract: This belt is used as power transmission belt, timing belt and transportation belt. It has a tension section, a compression section and a load carrier layer disposed between said two sections. The load carrier of the load carrier layer is composed of polyethyleneterephthalate filament which has at least 85 mol % ethyleneterephthalate as repeated unit and is at least 0.8 in ultimate viscosity, less than 0.190 in bifringence rate, less than 60 in the degree of orientation of amorphous portion and less than 15 equivalent/10.sup.6 g in terminal carboxyl group content, and said load carrier, when heated for 30 minutes at 150.degree. C. after an adhesive treatment and a heat treatment, is less than 5% in shrinkage percentage at dry heating and at least 6 g/denier in strength and less than 4% in elongation at a load of 2 g/denier.

Abstract: An automotive V-belt used for power transmission to drive accessory units to an automotive internal combustion engine. Surface smoothing agent such as wax is dispersed in the inner material of the belt for reducing attachment of dust to the belt surface.

Abstract: A power transmission belt which is substantially V-shaped in cross-section has insert members which are resistant to transverse compression embedded in an elastomeric or plastomeric body. Protective layers of elastomer or plastomer having oriented fibers dispersed therein cover the flanks of the belt and, if necessary, are disposed in addition to the belt body adjacent to a base of the belt.

Abstract: A cross-grooved banded drive belt wherein a plurality of V-belt elements are retained in laterally spaced relationship by a tie band. The V-belt elements are provided with transverse grooves which, in the illustrated embodiment, are aligned across the belt and arranged in sets spaced longitudinally of the belt. The grooves are asymmetrical in longitudinal section and in the illustrated embodiment, include planar, leading, and trailing surfaces. In the illustrated embodiment, the leading groove surfaces have a greater length than that of the trailing surfaces. As a result of the transverse alignment of the grooves of each set, the leading surfaces are effectively coplanar with each other and the trailing surfaces are effectively coplanar with each other. Illustrative ranges of the angularity of the groove surfaces are disclosed. In one form, the sets of grooves are uniformly longitudinally spaced, and in another form, the sets of grooves are randomly differently spaced.

Abstract: A strip of material adapted for use in a power transmission belt construction, method of making such strip, and belt construction and method of making same employing the strip are provided wherein such strip comprises an uncured polymeric matrix material having opposed surfaces and a plurality of elongate reinforcing fibers disposed substantially uniformly throughout the matrix material in a random manner and in parallel relation and a plurality of parallel spaced apart bleeder yarns are adhered against at least one of the surfaces with the strip being adapted to be laminated against associated layer means comprising the belt construction on at least one common interface with the bleeder yarns along the interface and the bleeder yarns are adapted to serve as fluid passages for any fluid present at the interface during curing of the strip and its associated layer means.

Abstract: A power transmission belt (10,21) of improved manufacture wherein a novel reinforcing fabric (4,14) is provided in the inner portion of the compression section (3,13) of the belt. The fabric is formed of yarns (20) having a low coefficient of thermal contraction and a high bias elongation to break. The yarns are formed of a mixture of natural and synthetic resin fibers and are subjected to heat treatment to effect the improved low coefficient of thermal contraction and high bias elongation to break.

Abstract: Drive belts for tape cartridges featuring a base belt of low coefficient of elasticity with an elastomeric coating having a high coefficient of friction. Three examples of such belts are: (1) polyimide or polyester film base belts with a thin elastomeric film coating; (2) nickel, copper or steel base belts with a thin elastomeric film coating and (3) spirally wound filaments of high modulus of elasticity within an elastomeric matrix having a low modulus of elasticity, the filaments forming the base belt and the elastomeric matrix forming the coating on the base belt, holding the spiral loops in place.

Abstract: An endless power transmission belt comprising a plurality of V-belt parts spaced laterally apart from one another and tie band having an improved structure and connecting the V-belt parts together. The V-belt part and the tie band are essentially made of elastomer material and fabrics. More specifically, the tie band is made up of at least two cord fabric layers and an elastomer material in which the cord fabric layers are embedded. An intermediate elastomer material layer is provided between the fabric layers. The fabric layers are made of cords which are extended obliquely with respect to the longitudinal axis of the belt in such a manner that the cords forming one fabric layer form an angle with the cords forming another fabric layer adjacent thereto. The upper surfaces of the plurality of V-belt parts are connected by the tie band thus constructed, to form one unit.

Abstract: A raw edge type rubber V-belt having a tension section, a compression section and a tensile member layer extending in the longitudinal direction of the belt and embedded between the tension section and the compression section. A single or plural plies of rubbered fabric highly stretchable in the longitudinal direction of said belt are, in laminated form, embedded in the lower portion of the compression section with a rubber layer on each fabric, and bonded to the upper surface of the tension section. Short fibers are mixed in a compression rubber layer under the tensile member layer and in a tension rubber layer on the tensile member layer in such a manner that the short fibers extend in the lateral direction of the belt.

Abstract: A power transmission V-belt having a tensile member (11) arranged in the form of a layer along the center line of the belt and first and second elastic rubber layers (14), (13), formed on opposite surfaces of the layer. The modulus of elasticity of the second elastic rubber layer is either equal to or smaller than that of the first elastic rubber layer. A first stretchable fabric (16) is provided on the surface of the first elastic rubber layer (14) and a second stretchable fabric (15) is provided on the surface of the second elastic rubber layer (13). The stretchability of the second stretchable fabric in the longitudinal direction is larger than that of the first stretchable fabric (16). The belt has a trapezoid cross-section.

Abstract: A wrapped, molded belt, and a method for making the same, are provided wherein the belt has a cover made from cord fabric. The angle of the strength cords of the cord fabric is different from the angle of the cords on the sides of the belt. The belt is produced by wrapping a desired width of cord fabric around a belt body, skewing the cords a desired amount and in a desired direction, depending upon which face of the belt body is being covered, and finally, curing the belt.

Abstract: Endless power transmission belts of spliceless, Mobius strip construction comprising a continuous strength member embedded in an elastomeric material, together with methods for the manufacture of such belts, are provided.