Abstract: Disclosed is an improved laminated metallic belt consisting of at least two layers of an endless metallic band for use in a torque transmission device, which can transmit torque between two pulleys having variable effective radii, in combination with a plurality of metallic blocks which have surfaces contacting the innermost layer of the laminated metallic belt and are arranged along the laminated metallic belt. The metallic belt according to the present invention may be made of precipitation hardening martensitic stainless steel or maraging steel which have favorable properties as to toughness, mechanical strength and the adaptability for welding required for making an endless laminated metallic belt, but lack the surface hardness to ensure relatively favorable durability. The durability of the steel is improved according to the present invention by a nitride layer and/or an electroless nickel plating layer formed on the side edges of the endless metallic band.

Abstract: A process for the assembly of a composite driving belt having a substantially trapezoidal cross-section and intended for use on V-shaped pulleys, consisting of an endless carrier in the shape of at least one metallic band and of a plurality of transverse elements which rest against one another with the parallel parts of their principal faces and which have been mounted slidably on the carrier, while lateral recesses have been provided for receiving the band(s), in such a fashion that the transverse elements are in contact with one another.

Abstract: A load block for a chain-belt constructed of interleaved sets of links and load blocks in which the load blocks have a window with a window-bottom defining a surface relieved so that the load transferred from the links to the load blocks occurs mainly through the outermost or edge links.

Abstract: An endless power transmission belt construction and a transverse belt element therefor as well as a method of making the same are provided, the belt construction comprising an endless carrier unit and a plurality of transverse belt elements assembled on the carrier unit, each belt element comprising a block of polymeric material having a reinforcing unit of metallic material disposed therein. Each reinforcing unit comprises two spaced apart side parts that extend outboard of one of the surfaces of the carrier unit and extend outboard of the other of the surfaces of the carrier unit. Each belt element has a slot receiving the carrier unit therein and a shoulder arrangement that defines part of the slot and engages the inner surface of the carrier. The side parts of each reinforcing unit of each belt element respectively have portions thereof that comprise the shoulder arrangement of their respective belt element.

Abstract: A belt construction for a continuously variable transmission, a transverse belt element therefor and methods of making the same are provided, the belt construction comprising an endless flexible band unit, and a plurality of belt elements carried by the band unit in sliding relation therewith, each belt element having a slot arrangement receiving the band unit therein and having opposed faces disposed in compressed relation against adjacent faces of adjacent belt elements. Each belt element is formed substantially solely from a high performance polymeric material that has high heat resistance, high compressive modulus, high toughness and high strength.

Abstract: A V belt to be used for a dry type transmission. It comprises two endless load carriers and a plurality of blocks in engagement with said load carriers relatively immovable in lengthwise direction of the belt. Said load carrier has elastomers and tensile members embedded in said elastomers. Said block is made of plastics or hard rubber and has slant side surfaces to fit substantially to the groove surface of a pulley on which the V belt is wound and a slot which extends from said slant side surface toward the central part of the block and in which the load carrier is fitted.

Abstract: An endless transmission belt adapted for extension between a pair of pulleys for a V-belt type continuously variable transmission, the belt comprising: a plurality of linking units, each link unit comprising a plurality of link elements having opposite end portions thereof over lapped alternately with link elements of adjacent link units; joint members pivotally connecting the overlapped end portions of adjacent links; paired first and second blocks disposed over each of the link units between adjacent joint members, each block having side surfaces engageable with the pulleys; each of the first blocks having an outer lapping face in abutting engagement with an adjacent second block and having an inter lapping face with a connecting portion in engagement with one of the joint members, each of the joint members pivotally supporting one of the first blocks in a radial position providing a clearance between each first block and each link unit; and, each of the second blocks having an outer lapping face in abuttin

Abstract: A power transmission chain extending between driving and driven means, such as pulleys or sprockets to transfer torque wherein the chain is formed of a plurality of links having a substantially constant pitch and a plurality of serially arranged contact surfaces engaging contact surfaces of the driving and driven means. The links are designed with longitudinally spaced apertures providing centers of action that are located with respect to a reference line of the link to vary the chordal action of at least some of the links to alter the contact timing and duration between the chain and the driving and driven means to change the generated noise pattern.

Abstract: Endless V-shaped belt, provided with longitudinal elements allowing the increase of the power transmitted with a conventional belt, comprises a rigid transverse part, integral with the longitudinal armature, used for the transmission of the motion by contact and pressure in the groove of a pulley, each transverse part being provided as a thin V-shaped plaquette (1), cut at the upper or lateral portion thereof to allow the passage and seating of the longitudinal armature.

Abstract: Drive belt comprising an endless carrier band 4 and plate-shaped transverse members 1 with a central recess 5 for the band 4 the top edge 9 of the recess, starting from one of the upstanding side edges 8, extending over at least half the width of the carrier band 4 and being connected to a narrow slot 13 which opens into the top edge 10 of the member 1 and via which the transverse members 1 can be fitted around the band 4 with the slot 13 alternately facing one or the other edge of the band.

Abstract: A flexible power transmission means comprising an assembly of a pair of spaced, generally parallel chains, each constructed of a plurality of sets of interleaved links. Each set is joined to its next adjacent set by a pin, each pin serving both chains. Generally trapezoidal-shaped load blocks are located between the chains and having cut-outs in the sides locating the chains. The load blocks are generally contoured at their edges to fit into the V of a pulley and are disposed between the chains. The load is carried by the chains and its pins. The load blocks are longitudinally positioned with respect to the chains by the chains' pins.

Abstract: A V-belt assembly trained over V-belt wheels which includes a flexible endless belt, a plurality of rigid suspension members secured fixedly to the endless belt perpendicularly to the longitudinal direction of the endless belt and approximately U-shaped rigid transmission pieces pivotably supported by pivotal projections projecting sidewise from both sides of the respective suspension members and capable of engaging V-shaped grooves in the V-belt wheels. The central axis of the pivotal projections passes through the approximately central portion of the thickness of the endless belt. In the ends of both legs of the U-shaped transmission piece are formed grooves for receiving the pivotal projection of the suspension member, and lids for covering respectively these grooves are secured fixedly to the ends of the legs.

Abstract: Driving belt, comprising at least one endless, flat, metal, carrying band for a number of transverse members which can move with respect to this band and of which the surface which is in contact with the carrying band shows a crosswise curvature, said curvature being concave (hollow).

Abstract: Link plates are connected into a chain by means of forward and backward connecting pins in each chained link plate. Frictional blocks having slanting outer surfaces are mounted around the link plates and affixed thereto by the connecting pins projecting from the link plates into the frictional blocks. The blocks may have holding pins inserted above and below the connecting pins, whereby opposite parts of the frictional block are attached to one another, enclosing the projecting ends of the connecting pins. The opposite parts of the frictional blocks attached by the holding pins have slanting V-shaped outward-facing frictional transmittance faces, transverse to the chain run for riding in the circumferential V-groove of a pulley. The blocks also have slanting faces longitudinally along the chain run on the side of the chain to be oriented toward a pulley, and straight abutting faces on the side of the chain to be oriented away from the pulley.

Abstract: A V-belt transmission apparatus made of a pair of endless metallic belts and a plurality of V-shaped metallic members disposed in series in a stacked condition on the belts. Each V-shaped metallic member has laterally open, channel shaped grooves on both sides with the metallic belt on each side being inserted in the groove on that side. Each V-shaped metallic member includes a main body having a projection portion and a stopper member prepared separately from and attached to the projection portion of the main body. The stopper member forms upper wall portions defining the channel shaped grooves together with the main body.

Abstract: An endless power transmission belt construction and a clip for a transverse belt element therefor as well as methods of making the same are provided, the belt construction comprising an endless flexible carrier that has a longitudinal axis and a plurality of transverse belt elements assembled on the carrier. Each belt element comprises a plurality of parts secured together to define an opening passing transversely therethrough and receiving the carrier therein. One of the parts of each belt element comprises a generally C-shaped clip that in a direction substantially transverse to the longitudinal axis of the carrier snaps over and substantially encircles and holds the remaining parts of the respective belt element in their assembled relation.

Abstract: A torque transmitting belt spanned between an input and output pulleys including a circumferential groove of a V-shaped cross-section to transmit a torque between the pulleys. The torque transmitting belt is employed in a continuously variable transmission which adjusts the size of V-shaped groove(s) in one or both of the pulleys as a result of the variation of the pressure which forces the belt into groove(s). The torque transmitting belt has an endless carrier spanned between the pulleys and a plurality of torque transmitting blocks which are mounted by the endless carrier so that the blocks may be longitudinally shiftable along the endless carrier. The endless carrier includes a plurality of hoops which are superimposed each other. The endless carrier extends through a groove of the torque transmitting blocks, which has an opening adjacent the inner surface of the pulley. The hoops is designed to have different circumferential length according to its positions within the groove.

Abstract: A V-belt assembly for transmitting power, which includes a V-belt assembly trained over a V-belt wheel; a flexible endless belt; a plurality of suspension members slidably mounted on the endless belt in a longitudinal direction thereof and which includes a pin member and a U-shaped member connected to said pin, and a plurality of U-shaped transmission pieces separated from the U-shaped member, having side surfaces corresponding to side walls of a V-shaped groove of the V-belt wheel and supported swingably by the suspension members, respectively.

Abstract: A belt construction for a continuously variable transmission, a transverse belt element therefor and methods of making the same are provided, the belt construction comprising an endless flexible band unit, and a plurality of belt elements carried by the band unit in sliding relation therewith, each belt element having a slot arrangement receiving the band unit therein and having opposed faces disposed in compressed relation against adjacent faces of adjacent belt elements. Each belt element is formed substantially solely from a high performance polymeric material that has high heat resistance, high compressive modulus, high toughness and high strength.

Abstract: An endless power transmission belt and a transverse belt element therefor as well as methods of making the same are provided, the belt construction comprising an endless flexible carrier and a plurality of transverse belt elements assembled on the carrier, each belt element having a peripheral face and a medial slot passing therethrough and receiving part of the carrier therein. Each belt element has a slit in the peripheral face thereof that leads to the slot thereof and a hinge spaced from the slit thereof that permits the belt element to have the slit thereof opened sufficiently to permit at least part of the carrier to be received therethrough for subsequent positioning in the slot thereof and thereafter be moved to a closed position to prevent at least that part of the carrier from escaping through the slit.

Abstract: In a chain V-belt working on a pair of two-split pulley blocks and having a plurality of links coupled endlessly therefor, a projection is formed on the inside of the links when the belt is coupled endlessly, a block slender in section to be long perpendicular of the direction in which the belt runs and short in the direction in which the belt runs is installed on the projection so as to engage with the pulley blocks through both ends of the block, a slip between the belt and the pulley blocks is prevented to transmit a power securely, the belt is made to run stably even at the time of transmission, a large power is transmitted on a small surface pressure.

Abstract: An endless power transmission belt construction and a transverse belt element therefor as well as a method of making the same are provided, the belt construction comprising an endless carrier unit and a plurality of transverse belt elements assembled on the carrier unit, each belt element comprising a block of polymeric material having a reinforcing member of metallic material disposed therein. Each reinforcing member comprises a folded blank defining two spaced apart side parts that extend outboard of one of the surfaces of the carrier unit and an elbow joining the side parts together and extending outboard of the other of the surfaces of the carrier unit. Each belt element has a slot receiving the carrier unit therein and a shoulder arrangement that defines part of the slot and engages the inner surface of the carrier. The side parts of each reinforcing member of each belt element define the shoulder arrangement of their respective belt element.

Abstract: A belt and reinforcement for a V-block of a V-block belt is provided. The reinforcement has a generally U-shaped member with a lower beam member that interconnects diverging diagonal side members that each form a cantilevered portion. A means is provided in the cantilevered portion for retaining an upper beam member. The means is in the form of deformable sides that define a slot for receiving end portions of the upper beam member.

Abstract: A V-belt assembly trained over U-belt wheels for transmitting power and which includes a flexible endless belt, a plurality of rigid suspension members secured fixedly to the endless belt perpendicularly to the longitudinal direction of the endless belt and rigid transmission pieces surrounding the respective suspension members in the section perpendicular to the longitudinal direction of the endless belt, supported pivotal projections projecting sideways from both sides of the suspension members and capable of engaging V-shaped grooves in the V-belt wheels. This rigid transmission piece is shaped in the generally rectangular form constituted from two generally U-shaped pieces. At least one of the pivotal projections of the suspension member and holes in the transmission piece located approximately in the center of a space between the top surface and the bottom surface of the transmission piece fitted on the pivotal projections of the suspension member is coated with an antifriction material layer.

Abstract: A metal drive V-belt has a prefolded portion forming a plurality of abutting drive blocks. The drive blocks have longitudinally aligned lateral slots in which are disposed circumferentially extending radially abutting nested continuous metal band members. The metal band members maintain the drive blocks in a continuous loop. The slots have smooth radius corners to provide stress relief. The radial innermost of the nested bands have a chamfer formed on the inner edges thereof and a longitudinally extending locking bead which mates with the next radial outermost continuous band.

Abstract: A push-type metal V-belt for use with V-grooved pulleys is produced with a single formed and fan-folded strip of sheet metal. The folded strip has alternately tight-folded and open-folded portions having less height when viewed edgewise of the open-folded portions. During the forming of the strip, adjacent drive edges are formed so that when folded, these edges are aligned so as to become drive surfaces of the belt. When viewed in a lateral section, the drive surfaces are the outer edges of a substantially trapezoidal surface. Also, during the forming of the strip, a plurality of lateral slots are formed to provide an area or space for housing a plurality of metal bands which maintain the fan-folded strip in a continuous belt or loop configuration.

Abstract: A chain-belt for drivingly connecting the pulleys of a pulley transmission and constructed of interconnected sets of links which are interleaved with one another with pivot means connecting the sets of links and a load block encircling each set of links with a clip member for retaining the chain parts assembled. The clip is so shaped and orientated to substantially eliminate tilting of each load block with respect to the chain as the belt enters a pulley.

Abstract: A load block for a metal chain belt comprising upper and lower transverse struts, the ends of which are adapted to engage the flanges of the pulleys of a pulley transmission, said struts being joined by recessed end portions, the struts and end portions defining a window for encircling a carrier, the end portions being recessed from the ends of said struts so as not to engage the flanges of the pulleys of a pulley transmission.

Abstract: There is described a transmission belt for use in a constantly variable power transmission of the type utilizing pulleys of variable effective diameter, the transmission belt comprising a plurality of identical links of substantially trapezoidal form, having pulley-engaging traction surfaces (1, 32) at their non-parallel edges and being formed on each face with a series of aligned tunnel-like loops (3, 4, 30), the two series of loops on each link being complementary so that when two links are superposed, the loops on adjacent faces define a cylindrical cavity in which a pin (11, 14, 21) is receivable to provide a tension-transmitting articulation between the links. The links are also formed with compression-transmitting surfaces (7, 41, 57) on each of their faces, these surfaces abutting when the links are in a linear array. Optionally, the longer of the parallel sides (43) of each link may be adapted to carry a plain tension belt (40) to augment the power transmission capacity of the belt.

Abstract: A power transmission belt of the V-block type with polymeric portions that define frictional driving surfaces. Extended polymeric portions are oriented transversely to the belt and are deflected such that successive blocks are in pressing contact with each other.

Abstract: A chain-belt comprising a plurality of interleaved sets of links and load blocks associated therewith. Each link is defined by toes, the toes of each link being defined by parallel inside flanks joined by a crotch. A load block is received between the inside flanks and further a hardened insert is located between the links and the blocks to protect the links and improve the durability of the chain.

Abstract: A V-belt transmission is provided which comprises V-groove pulleys and an endless belt surrounding the pulleys. A plurality of V-shaped belt engaging metallic members are positioned along the endless belt in the longitudinal direction thereof, each having a belt engaging surface for engaging the belt. A plurality of intermediate members are positioned between adjacent engaging members, with the intermediate members being positioned on the inside of the endless belt. Each of the engaging members includes a receiving surface for contacting the adjacent intermediate member, with at least one of the receiving surfaces being shaped to apply a force to the intermediate member in the longitudinal direction of the belt when the engaging member is brought into contact with the V-groove of the V-groove pulleys. The belt engaging surface of the engaging member is aligned with the mid-point of the height of the inclined side surfaces thereof which contact the V-groove of the V-groove pulleys.

Abstract: A power transmission V-belt comprising an endless belt, a plurality of V-shaped metal members and a plurality of intermediate members. The endless belt is mounted between drive and driven pulleys. The plurality of V-shaped metal members are arranged on the endless belt serially in the longitudinal direction thereof. Each of the V-shaped metal members is formed with a groove to provide a contacting surface in contact with an inner surface of the endless belt. The plurality of intermediate members are positioned at inner side of the endless belt. Each of the intermediate members is interposed between neighboring V-shaped metal members. Each of the V-shaped metal members has both sides in running direction of the endless belt and is formed with receiving surfaces for receiving one of the roller members. The receiving surfaces are in arcuate form. The radius of curvature of one of the receiving surfaces is substantially equal to that of the intermediate members.

Abstract: A metal chain-belt for drivingly connecting the pulleys of a pulley transmission, each pulley of which is composed of a pair of flanges, the chain-belt comprising a carrier composed of interleaved sets of links and pulley flange engaging members, each of which is a pair of back-to-back joined C-shaped member, the arms of the latter engaging the pulley flanges. The longitudinal length of the top arms of a pair of members substantially equals the pitch of the chain; the longitudinal length of the bottom arms is less to permit the belt to articulate.

Abstract: A V-belt transmission is provided which comprises two pulleys, an endless metallic V-belt operatively positioned between the two pulleys, a plurality of V-shaped members positioned with the V-belt located between the arms of the V and a stopper member for engaging the V-shaped member to prevent the V-shaped member from coming off of the V-belt. The V-shaped member includes grooves in a wall of the arms of the V at a position below or inside the plane of the inner surface of the V-belt. Further, the stopper member includes a middle portion which is positioned above or outside the plane of the outer surface of the V-belt and end portions for engaging the grooves at a point below or inside the plane of the inner surface of the V-belt. The groove in the V-shaped member is located on the outside of the arms of the V and has a first portion which extends in the lengthwise direction of the V-belt and a second portion which extends perpendicular to the surface of the V-belt.

Abstract: Herein disclosed is a V-belt transmission device in which a plurality of substantially V-shaped metal members (2) and a plurality of resilient metal members (3) are alternately mounted to an endless metal belt member made of band steel and are in contact with each other to constitute a V-belt which is subjected to a tension between a driving V-pulley (5) and a driven V-pulley (6), thereby effecting a torque transmission between both the pulleys. Each of the V-shaped metal members (2) is provided with a substantially U-shaped groove (7) directed to the outside. Each of the resilient metal members is formed as a hollow roller to engage with recessed surfaces (8) which are formed in opposing surfaces of a pair of the V-shaped metal members (2). The V-shaped metal members (2) and the resilient metal members are fastened together at their outer peripheries by the metal belt member.

Abstract: An endless power transmission belt construction and a transverse belt element therefor as well as a method of making the same are provided, the belt construction comprising an endless flexible carrier that has a longitudinal axis and a plurality of transverse belt elements assembled on the carrier. Each belt element comprises a plurality of parts secured together to define an opening passing transversely therethrough and receiving the carrier therein. One of the parts of each belt element comprise a generally C-shaped clip that in a direction substantially transverse to the longitudinal axis of the carrier snaps over and substantially encircles and holds the remaining parts of the respective belt element in their assembled relation.

Abstract: An endless power transmission belt construction and a transverse element therefor as well as a method of making the same are provided, the belt construction comprising an endless flexible carrier and a plurality of transverse belt elements assembled on the carrier. Each belt element has a recess therein defining an intermediate transverse shoulder for engaging the inside surface of the carrier and a pair of inwardly facing shoulders confining the carrier therebetween, each inwardly facing shoulder having an opening interrupting the same and being aligned with the opening in the other inwardly facing shoulder of its respective element. Each belt element has a pin provided with opposed ends respectively disposed in the openings of the inwardly facing shoulders thereof whereby the carrier is confined between the pin and the transverse shoulder of each belt element. The pin of each belt element has its opposed ends snap-fitted into the respective openings of the inwardly facing shoulders thereof.

Abstract: A push-type metal V-belt is formed from a single strip of sheet metal. The strip is formed and folded such that the lateral faces between the converging outer drive edges are tapered to have a reduced thickness at the inner fold. The formed strip also has lateral slots in which, after folding, continuous metal bands are disposed for maintaining the belt in a continuous loop configuration.

Abstract: A belt construction for a continuously variable transmission, a transverse belt element therefor and methods of making the same are provided, the belt construction comprising an endless flexible band unit, and a plurality of belt elements carried by the band unit in sliding relation therewith, each belt element having a slot arrangement receiving the band unit therein and having opposed faces disposed in compressed relation against adjacent faces of adjacent belt elements. Each belt element is formed substantially solely from a high performance polymeric material that has high heat resistance, high compressive modulus, high toughness and high strength.

Abstract: A tension-type belt/pulley system provides an improved concept for retaining the bands of the drive belt within the pulley cones while increasing the maximum operating pitch radius of the belt for a given pulley radius, thereby increasing the ratio range of the system. The pulley flanges are chamfered at their outer ends to provide smooth re-entry of the bands into the cones in the event the bands drift laterally during a half revolution of the belt.

Abstract: A V-belt assembly for use in a V-belt transmission is provided. The V-belt assembly comprises an endless belt having a plurality of endless layers wherein the thickness of each of the layers is less than the thickness of the adjacent outer layer. The V-belt assembly also includes a plurality of V-shaped members, each V-shaped member having a belt engaging surface and a plurality of intermediate members disposed between adjacent V-shaped members.

Abstract: A continuously variable transmission means having block members, each block member having longitudinal projections causing the rotating radius of the block members to be the same as the rotating radius of an endless carrier, the block members and endless carrier forming a belt which extends between a driving pulley and a driven pulley. When a portion of the belt is in a transition area between a straight extension between the pulleys and moving toward contacting a peripheral portion on one of the pulley, the sliding movement between adjacent block members and the carrier is obviated due to the rotating radius of the block members being equivalent to the radius of the carrier.

Abstract: The invention relates to a belt and pulley transmission which is preferably but not essentially an infinitely variable transmission. The belt is formed from a stack of individual blocks working in compression and supported on one or more support bands. According to the invention, the blocks are formed from sintered metal material, while the bands which support and compress the blocks are made from aramide fibres, such as KEVLAR. Every tenth block is of sintered bronze, to reduce the risk of seizing, the remaining blocks being of sintered iron.

Abstract: A power transmission chain-belt, especially adapted to transmit power between the pulleys of a pulley transmission, such as a variable ratio pulley transmission. The chain-belt is constructed of a plurality of ranks or sets of interleaved links, each rank being joined to the next adjacent rank by pivot means, such as round pins, or a pin and rocker, to permit articulation of the belt. Trapezoidal load blocks carried by the chain have angled edge surfaces to drivingly contact the flanges of the pulleys. In one embodiment of the invention, a block is located between each adjacent pair of pivot means and at least one block has a different width than the other load blocks, so that its edges are free of contact with the flanges of the pulleys and thus do not drivingly engage the flanges.Substantially the same effect is achieved by "skipping" one or more load blocks in the assembly, i.e. by eliminating one or more load blocks in the chain-belt.

Abstract: A power transmission chain-belt, especially adapted to provide a drive and transmit power between the pulleys of a pulley transmission, such as a variable ratio pulley transmission. The chain-belt is constructed of a plurality of ranks or sets of interleaved links, each rank being joined to the next adjacent rank by pivot means, such as round pins, or a pin and rocker, to permit articulation of the belt. Generally trapezoidal load blocks are located between the pivot means of each rank or set of links, which blocks have opposite edge surfaces to contact the flanges of the pulleys. At least one load block has a differently dimensioned or arranged contact area than the other load blocks. This changes the generated noise pattern produced when the chain-belt engages the pulley flanges.

Abstract: A power transmission chain-belt, especially adapted to provide a drive and transmit power between the pulley of a pulley transmission, such as a variable ratio pulley transmission. In such each pulley has a pair of flanges, at least one of which is axially movable with respect to the other. The chain-belt is constructed of a plurality of ranks or sets of interleaved links, each rank being joined to the next adjacent rank by pivot means, such as round pins, or a pin and rocker, to permit articulation of the belt. Generally trapezoidal-shaped load blocks are located between the pivot means of each rank or set of links, which blocks have opposite edge surfaces to drivingly contact the flanges of the pulleys. At least one load block has a different width than the other load blocks, so as to contact the flanges of the pulley at a different radial location and different time than the other load blocks.

Abstract: A V-belt assembly is provided which comprises an endless metallic belt and a plurality of V-shaped members disposed along the belt in the longitudinal direction of the belt. Each of the V-shaped members has a groove with a belt engaging surface at the bottom of the groove facing the belt. The V-shaped members also include pulley engaging surfaces for engaging the surfaces of pulleys in the transmission. A plurality of intermediate members are interposed between adjacent V-shaped members on the inside of the belt. The intermediate members are held between corresponding adjacent V-shaped members by intermediate member engaging surfaces of the V-shaped members. The intermediate members are movable towards and away from the belt along the intermediate member engaging surfaces. The side surfaces of the groove can be formed with a surface corresponding to the shape of the edge surface of the endless belt.

Abstract: A chain-belt for drivingly interconnecting pulleys of a pulley transmission comprises a chain with load blocks surrounding the link sets and located between adjacent pivot means. Each load block has at least a pair of side-by-side windows through which chain links extend, the windows being separated by a central strut joining the upper and lower spans of the blocks, reducing deflections and twisting of the block spans due to the loading thereon from the pulleys.

Abstract: A side-bar chain has chain links each formed of a stack of side bars and chain pins traversing aligned side bar openings in the side bars of each stack transversely to the chain length; and a plurality of chain braces each formed by opposite outermost side bars of at least some of the chain links and a transverse web joining the brace-forming side bars to one another and straddling the side bar stack transversely to the chain length. Each brace-forming side bar includes a longitudinal web extending parallel to the chain length between the side bar opening and the transverse web. The transverse web of each chain brace has an aperture for reducing a cross-sectional dimension of the transverse web measured parallel to the chain length at least adjacent the longitudinal web of each brace-forming side bar.