Abstract: An endless loop transmission chain balances the differences in moments and stresses on its inner and outer links. The chain is comprised of a plurality of links that are pivotally connected in stacks and in overlapping series. The links are fashioned with holes perpendicular to the link faces, and the links are either “robust” or “thin”. Robust links may be made of material of greater tensile strength, they may be formed by mating at least two thin links, and/or they may be made of thicker material. A plurality of pins serially connects and stacks the links. The pins fit though the holes in each link perpendicular to the link face. Robust and thin links are alternated in stacks in a pattern that balances link tension when the chain is under tension. Fewer links carry the tension between any set of adjacent pins. When it is used in a transmission, this chain has at least 10% higher torque-carrying capacity than the prior art.

Abstract: A track assembly includes a frame. The track assembly also includes a drive wheel and an idler wheel rotateably secured to the frame. The track assembly further includes an endless belt having an inner surface and an outer surface. The endless belt is disposed around the drive wheel and the idler wheel. The track assembly also includes a guide block secured to the inner surface of the endless belt. The track assembly further includes a first roller rotateably secured to the guide block.

Abstract: A V-face of a metal element is prevented from being inclined due to a load from a pulley by increasing the height Hs of an upper non-contact portion of the V-face of the metal element.

Abstract: A belt for continuously variable transmission, wherein the relationship between the thickness of the metal ring assembly and the groove width of the ring slot is established so that a limit rolling angle &agr; defined as a rolling angle of the metal elements provided when a radially outer peripheral surface of the metal ring assembly contacts a radially outer edge of the ring slot in the metal element is in a range of 0.7°<&agr;<2.5°. The upper limit value 2.5° of the angle &agr; is set as a rolling angle at which the driving force transmitting efficiency is a predetermined value or more, and the lower limit value 0.7° of the angle &agr; is set as a rolling angle generated following the deformation of a V-face due to an axial thrust on a drive or driven pulley.

Abstract: A process for assembling a belt for a continuously variable transmission, comprising the following steps: preparing standard elements, first adjusting elements and second adjusting elements respectively having a thickness of 1.5 mm, 1.6 mm and 1.4 mm; measuring an initial clearance &agr;i generated upon closely assembling only the standard elements to a metal ring assembly; if the initial clearance &agr;i<0.8 mm, using a predetermined number of the first adjusting elements, thereby making a clearance between the elements smaller than 0.1 mm; if the initial clearance &agr;i≧0.8 mm, using a predetermined number of the second adjusting elements, thereby making the clearance between the elements smaller than 0.1 mm. Thus, the number of the adjusting elements required for adjusting the clearance between the elements can be suppressed to seven or less.

Abstract: When a tangential friction force received by a pulley abutment surface 37 of a metal element 32 from a pulley is represented by FV; a radial distance from a point 45 of action of the tangential friction force to a rocking edge 40 located radially outside the friction force-acting point 45 is represented by L; a radially inward load received by the metal element 32 from a metal ring assembly 31 is represented by FL; and a thickness of the metal element 32 is represented by t, the radial distance L and the thickness t of the metal element are determined, so that a relation, L/t≦FL/2FV is established. Thus, even if a moment FV×L is applied to the metal element 32 by the tangential friction force FV, the moment FV×L can be canceled by a moment FL×(t/2) generated by a load FL for urging an edge a of a ring slot 35 by the metal ring assembly 31, thereby preventing the inclination of the metal element 32 to enhance the durability of the metal ring assembly.

Abstract: Drive belt (10) for a continuously variable transmission, as for use in motor vehicles, having transverse elements (20) and at least one endless carrier. The transverse elements (20) are each provided with a recess (21), which extends between a first and a second main face (22 and 23, respectively) of a transverse element (20), which main faces are oriented transversely to the intended direction of movement (C) of the drive belt (10). The recess (21) offers accommodation for the carrier (30) and at least is bounded by an abutting face (24), intended to come into contact with a main face (30′) of the carrier (30), and a boundary face (25), which is oriented transversely thereto and restricts the freedom of movement of the carrier (30) in the axial direction. The boundary face (25) merges into the first main face (22) and into the second main face (23) via transition edges (27, 27′), characterised in that the radius of curvature (R) of at least one transition edge (27) is less than 0.2 mm.

Abstract: A driving belt for use in a continuously variable transmission comprising two V-shaped pulleys, which driving belt comprises a carrier consisting of two endless band packages lying side by side, on which transverse elements are disposed. Each transverse element includes two recesses positioned opposite each other for receiving the band packages, wherein a part of the transverse element is positioned between said band packages. The front side of the transverse element includes a projection, which can mate with a recess in the adjacent transverse element. Said projection and said recess are at least partially formed in the aforesaid part of the transverse element.

Abstract: A V-belt transmits rotational movements between at least two belt pulleys and includes at least one endless load carrier and a plurality of transverse blocks mounted thereon. The load carrier is fitted into slots which extend from at least one inclined lateral surface of a block toward the center region thereof. The load carrier has a contact surface which faces a boundary surface of the slot in the block. The contact surface and the boundary surface are provided with convex and/or concave sections. To minimize losses and increase efficiency, the pressing force is reduced where the slide movement occurs. A contact region is assumed between the stretched state of the V-belt up to the state corresponding to the smallest running radius. In the entire contact region, a continuously changeable curvature or a composite of at least three sections of constant curvature is realized in such a manner that the curvature from the center of the contact region to the outer region increases.

Abstract: An endless metal belt (15) is formed by layering thin metal rings (30) in thicknesses to form tow layered ring structures (31) and fitting the two layered ring structures in slots (32a) formed in opposite side parts of each of metal blocks (32), extending on the opposite sides of a neck part (32e) of the metal block. The endless metal belt is extended between drive and driven pulleys (6, 11) respectively having variable effective diameters to change speed change ratio.

Abstract: A block-type heavy-duty power transmission V-belt including a large number of blocks fixedly engaged with tension members by fitting the tension members in fitting grooves formed on side faces of the blocks. In a reinforcing member embedded in each of the blocks, a beam angle between a vertical center line of an upper beam part disposed above the fitting groove and a pulley groove face closer to the center of a pulley than a portion of the pulley in contact with an upper contact part of the block is 90° or more. In this manner, to the base of the upper beam part is applied merely tensile stress derived from a shearing force working in a lengthwise direction of the belt between the block and the tension member, or tensile stress reduced correspondingly to compressive stress derived from downward bending moment applied to the upper beam part due to a reaction force from the pulley groove face.

Abstract: A plate link chain of the present invention has rocker link elements configured such that the frictional end surfaces have a profile, which deviates from a planar surface in both circumferential and radial orientations. In a preferred embodiment the end surface profiles are defined by radii of predetermined dimensions in the range of 5 to 50 millimeters with the radius formed in the radial plane being larger than the radius formed in the circumferential plane. The radii originate from midpoints, which are located at predetermined distances from the rocking surfaces, to form substantially spherical end surfaces that are either symmetric or asymmetric for selected applications. The substantially spherical end surfaces are designed to reduce the edge transfer forces and tracking error of the rocker link elements and to improve wear characteristics and the stability of frictional engagement of the transmission in operation.

Abstract: A power transmission chain belt has multiple inner links, each having a pair of pin apertures. The links are interleaved in the transverse and longitudinal directions. The links are connected by a connecting pin inserted in the pin aperture to compose a chain belt. The connecting pin is composed of a joint pin of an arcuate cross-section, both end faces of which contact the pulley's friction face, and a rocker pin of arcuate cross-section, which is shorter than the joint pin. The outer link is arranged on the outside of outermost inner link. A stepped portion of the joint pin is press-fitted into a pair of pin apertures of outer link.

Abstract: Endless belt for power transmitting according to the present invention is a tension-type belt by link chains, and has high power transmitting efficiency although it can be produced with relatively low cost. With this endless belt, the respective blocks and pins start to contact with sheave side in order near pitch line and the biting pitch into the sheave is made smaller so as to improve silence.

Abstract: A continuously variable transmission (CVT) chain has three chain portions, or chain assemblies, that are phased or off-set by one-half pitch length with respect to each other. Struts that contact the pulleys of the CVT have upper portions that extend through passageways formed by depending toes in the inner links. The upward portions of the struts are provided at portions that correspond to the offset portions of the chain.

Abstract: Continuously variable transmission provided with a belt (3) and pulley (1,2) capable of interacting with each other at an acute angle (.lambda.) under the influence of a coefficient of friction (.mu.), and which belt is suitable for taking both pushing and pulling forces, the ratio between flank angle (.lambda.) and the effective coefficient of friction (.mu..sub.tan) in the tangential direction in rotating conditions being such that, measured in radians, the coefficient of friction (.mu..sub.tan) is less than 1.1 times the value of the relevant flank angle (.lambda.), but is greater than 0.55 times that value.

Abstract: Rocker link elements (32, 33), which are located in pairs for connection of plate links (40), have end facing friction surfaces (43) which are essentially part spherical, for cooperation with essentially part spherical cone surfaces of cone disks (3, 4, 7, 8, 24-27). A base or central surface line is located approximately at a radial position of engagement with the end facing surfaces (43) of the rocker elements (32, 33) with the cone surfaces of the cones when the transmission is set for a transmission ratio of 1:1. To prevent engagement of edge regions of the rocker link elements with the respective cone disks, surface lines (54, 55) located radially outwardly, or inwardly, respectively, from a central surface line (49, 53), are inclined by an angle (.delta.), with respect to the base or central surface line. The angle of inclination (.delta.

Abstract: The power transmission chain of the present invention is formed of two parallel chains that are phased or offset by approximately one-half pitch. The chains are connected by struts that extend across the entire width of both chains. The power transmission chain belt of this invention provides for a restricting device in the interchain gap of the load block. Offset occurring during the speed change of a continuously variable transmission can be absorbed by the above mentioned gap. In one embodiment, the restricting device is in the form of a stop ring provided near the middle of the gap between the two side-by-side chains.

Abstract: A power transmission chain for a variable pulley transmission. The chain includes two half-chains placed side-by-side and offset by one-half pitch. Each half-chain has a plurality of interlaced inner links with each having a pair of depending toes to define a passageway to receive a strut that extends beyond the lateral width of the half-chain. A part of the portion of the strut extending beyond the one half-chain is substantially supported by a strut contact surface located adjacent the outer flank of the toes on the links of the other half-chain so that the strut is substantially fully supported across its full transverse width.

Abstract: A power transmission chain belt wherein each of two mutually offset parallel chains includes connected sets of parallel links, and spaced-apart parallel load block members engage the inner side of the parallel chains. Each set of parallel links includes link plates each having a pair of gripping protrusions formed so as to extend from an inner-side end face facing the load block members. The protrusions engage a pair of engaging grooves formed on each load block member, to thereby hold the link plates. The grooves are open on the opposite end faces of the load block member, and are provided with stopper means for inhibiting relative movements of the link plates and the load block member.

Abstract: A rocker joint for a power transmission chain is formed from a single pin and an associated link aperture. The pin has a substantially flat front surface and a convex back surface, with the back surface being defined by a plurality of radii. The pin is received in the aperture of the link such that the front surface of the pin engages and rocks on the curved surface of the link aperture. The back surface of the pin is movable in the aperture of the links as the surfaces move relative to one another when the chain articulates.

Abstract: An apparatus and a method for generating same provides a pulley sheave inner face profile for a variable pulley of a continuously variable transmission allowing the crowned face chain-belt centerline to remain in a plane substantially perpendicular to the axis of the pulleys at all times and at all drive ratios. Given a primary pulley sheave inner face profile, a corresponding secondary pulley sheave inner face profile can be developed to achieve substantially perfect belt alignment. The pulley sheave inner face profiles may be designed to be identical or congruent. Congruent pulley sheave inner face profiles can be developed according to an algebraic solution allowing numerically controlled design and manufacturing techniques in the fabrication of the sheave inner faces.

Abstract: A power transmission (10) chain-belt (32) is disclosed that is especially adaptable for connecting the pulleys or sheaves (12, 14) of a pulley transmission (10). The chain-belt (32) has a plurality of interleaved sets (34) of transversely arranged links (36). Pivot means (40) joined interleaved sets (34) of links (36) to form an endless loop. At least one toe (42a, 42b) extends from each link (36) in at least some sets (34) of links (36). The toes (42a, 42b) are in opposed relationship and define a passageway (80). A plurality of struts (50) are connected to the links (36) and are positioned in the passageway (80). Each strut (50) has edge surfaces (88) for contacting the pulleys (12, 14) of the transmission (10). Each strut further includes at least one notch (52) proximate the centerline of the strut (50). Retaining links (90 ) are supported by the pivot means (40) for engaging the notch (52) and limiting the lateral motion of the strut (50) with respect to the set (34) of links (36).

Abstract: A tip member for an exposed pin end on a chain-type power transmission belt. The tip member has a body defining a first surface to be engaged with a cooperating pulley and a pin-receiving opening in the body defined by a surface of the body. The body surface has a concave portion for guiding pivoting of the pin bearing against the concave surface portion, a tapered inlet portion for guiding a pin end into an operative position within the pin-receiving opening, and a transition portion at least partially between the concave surface portion and tapered inlet portion.

Abstract: In a rocker pin type friction transmission chain, the engaged surfaces of the rocker pins and pin insertion holes in the link plates are in the form of parts of an ellipse which are symmetrical with respect to the minor axis of the ellipse. This configuration is easy to machine, prevents relative rotation of the pins and the link plates, avoids cracking of the link plates due to concentrations of loads, and reduces the likelihood of fatigue failure due to excessive pressures exerted by the pins and link plates on each other.

Abstract: A chain-belt that extends between driving and driven members such as the leys of a continuous variable transmission wherein the chain-belt is formed of a plurality of interleaved sets of links. The links define a passageway and a plurality of load blocks are positioned in the passageway. Several members for reducing the noise produced by such a chain-belt are disclosed whereby certain of the load blocks in the chain-belt engage the pulleys at a different location to alter and reduce the pattern of noise produced by the chain-belt. The chain-belt also has links with a particular configuration that allows the links to have a short pitch length while still maintaining strength in the links.

Abstract: Friction transmission with opposite-pulley sheaves and transverse elements mating therewith, having an asymmetry relative to the longitudinal center plane thereof.

Abstract: A power transmission (10) chain-belt (32) is disclosed that is especially aptable for connecting the pulleys (12, 14) of a pulley transmission (10). The chain-belt (32) has a plurality of interleaved sets (34) of links (36and each set (34) has a plurality of transversely arranged links (36). Pivot means (40) join adjacent sets (34) of links (36) to form an endless loop. At least one toe (42A, 42B) extends from each link (36) in at least some sets (34) of links. At least the toes (42A, 42) on adjacent links (36) are in opposed relationship and define a passageway (80). A plurality of load blocks (50) are connected to the links (36). The load blocks (50) are positioned in the passageway (80) defined by the toes (42A, 42B). Each load block (50) has edge surfaces (88) for connecting the pulleys (12, 14 ) of the transmission (10). A notch (90) is positioned on each side of the load blocks (50) on the surface of the load blocks (50) that is adjacent the links (36).

Abstract: A chain-type force transmission belt for engagement with a pulley, which transmission belt consists of a plurality of link plates, a plurality of pins connecting the link plates so as to define an endless flexible belt with at least one of the pins having a lengthwise axis and axially spaced first and second ends, a first tip member/block for placement in an operative position at the first pin end and having a first surface for engagement with a pulley, a second tip member/block for placement in an operative position at the second pin end and having a second surface for engagement with a pulley, and structure separate from the one pin for connecting the first and second tip members/blocks together for holding the first and second tip members/blocks in their operative relationship.

Abstract: An improved rocker joint pin type CVT chain has link plates connected by rocker joints, each including a rocker pin and a seat pin in an insertion bore of the link plate, the rocker pin and the seat pin making rolling contact along opposing rolling arcuate surfaces thereof as the chain bends and straightens when passing around a pulley. At respective minimums, the sectional area of the link plate formed between the link plate insertion bore and the outer periphery of the link plate relative to the pulley, is greater than the sectional area formed between the link plate insertion bore and the inner periphery. The radii of curvature of the inner rolling contact surfaces of the rocker pin and seat pin are smaller than those of the outer rolling contact surfaces.

Abstract: A power transmission (10) chain-belt (32) is disclosed that is especially aptable for connecting the pulleys (12, 14) of a pulley transmission (10). The chain-belt (32) has a plurality of interleaved sets (34) of links (36) and each set (34) has a plurality of transversely arranged links (36). Pivot means (40) join adjacent sets (34) of links (36) to form an endless loop. At least one toe (42A, 42B) extends from each link (36) in at least some sets (34) of links (36). At least the toes (42A, 42B) on adjacent links (36) are in opposed relationship and define a passageway (80). A plurality of load blocks (50) are connected to the sets (34) of links (36). The load blocks (50) are positioned in the passageways (80) defined by the toes (42A, 42B). Each load block (50) has edge surfaces ( 88) for contacting the pulleys (12, 14) of the transmission (10). At least one spring link (131) positioned in said sets (34) of interleaved links (36).

Abstract: A chain-belt for engagement with the pulleys of a continuously variable transmission consists of interleaved sets of chain links joined for articulation by a joint which has a rocking action. The joint includes a pair of pins. A small camber is introduced into one or both of the pins to create a spring load between the pins and the links to retain the pins in the chain during handling and assembly. Each chain link includes a pair of spaced apertures adjacent the opposite ends; each aperture has a generally hour-glass shape with the enlarged ends receiving the pins. Also, each chain link has a pair of oppositely disposed tabs adjacent one end with the location of the tabs on the links alternating on adjacent links of each set. In addition the outermost two links of each set of links had a width substantially less than the width of the inner links in that same set.

Abstract: A power transmission (10) chain-belt (32) is disclosed that is especially adaptable for connecting the pulleys (12, 14) of a pulley transmission (10). The chain-belt (32) has a plurality of interleaved sets (34) of links (36) and each set (34) has a plurality of transversely arranged links (36). Pivot members (40) join adjacent sets (34) of links (36) to form an endless loop. At least one toe (42A, 42B) extends from each link (36) in at least some sets (34) of links (36). At least the toes (42A, 42B) on adjacent links (36) are in opposed relationship and define a passageway 80. A plurality of load blocks (50) are connected to the links (36). The load blocks (50) are positioned in the passageway (80) defined by the toes (42A, 42B). Each load block (50) has edge surfaces (88) for contacting the pulleys (12, 14) of the transmission (10).

Abstract: A transmission chain for a continuously variable conical pulley drive, comprising a plurality of interleaved sets of link-plates for each link, and an associated transverse-plate for each set. Each link-plate has at least two cams (43) per longitudinal side, defining between them a groove (44) with preferably V-shaped sides opening towards the cam-tops. Each associated transverse-plate has a rectangular closed window (54) and longsides (58) shaped correspondingly to the grooves (44). In service, when running through the sheaves of the pulleys, the transverse-plates locate themselves free-of-play in the grooves of the link-plates reducing wear and noise and any tendency for the chain to run out of square. At the straight trajects, play between the transverse-plates and the link-plates is restored again, permitting lube oil to enter.

Abstract: A chain for a V-pulley which is used by being endlessly trained between a pair of V-pulleys and in which blocks each having an end surface for coming into contact with the V-pulley are respectively disposed on the outer sides of outer link plates. The end surface of the block is formed into a convex surface constituted by the whole or part of a conical surface which has substantially the same apex angle as that of the inner wall of the V-pulley and has an axis parallel to the axis of a connecting pin. The block may be fixed with respect to the outer link plate or may be made rotatable about the axis of the cone.

Abstract: An endless power transmission chain-belt constructed of joined sets of links and blocks surrounding sets of links, the links in some sets having a pitch larger than links in other sets. Some blocks are of such width to engage pulley flanges of a pulley transmission while other blocks are of a lesser width to "skip" the flange engagement. The latter blocks can be omitted, if desired.

Abstract: A transmission belt comprises a plurality of chains and a plurality of load blocks. For lateral insertion of the plurality of chains, each of the load blocks including chain receiving portions which open laterally to allow the lateral insertion. Link plates of each chain include concaves for receiving chain receiving portion defining edges to provide drive connection between the chain and the load blocks via the chain receiving portions.

Abstract: A chain belt for stepless speed change transmission is provided wherein the connecting link rocker pins are arranged so that when the chain links are rotated relative to each other the pitch changes. This phenomena is used to reduce the drive noise generated with standard types of chain belts when they wrap around the drive pulley, due to a change in the relative speed of the drive block. From tests it is found that having the drive blocks outside of the chain line is more effective in reducing this relative velocity. Further having oval shaped drive blocks reduces the stress concentration at the region where load is transferred from the pulley to the chain belt, and by having an oval shape instead of a round shape the inclined end contact faces can be positively aligned to mate properly with the drive faces of the pulleys.

Abstract: The link chain has links which are coupled together by connecting joint elements (2, 3), formed with end surfaces which transfer frictional forces between a cone disk and the chain. A plurality of links are coupled to these connecting joint elements which form an essentially uniform overall cross section, transferring force between the connecting joint elements and the links. In order to provide for uniform force transfer, some of the links (4, 5, 6, 6', 8, 9, 10) are strengthened with respect to others or "normal", usually interiorly located links (1, 8). The strengthening can be obtained by using higher strength material, making the links thicker or doubling link elements to form a double-thickness link.

Abstract: A power transmitting system for transmitting power between a power source, such as an internal combustion engine or an electric motor or the like, and a driven device, such as a vehicle wheel or the like, comprising an endless power transmitting device, such as a chain or a belt, and a plurality of pulley devices including at least one variable diameter pulley with clamping devices associated with the variable diameter pulley and the endless power transmitting device to clamp them together during movement of the endless power transmitting device around the variable diameter pulley.

Abstract: An endless transmission belt for use in continuously variable transmissions of the chain type with a number of link plates interconnected in an endless manner. The belt has blocks arranged paired pins arranged longitudinally around its length and engaging with the blocks, link plates arranged transverse to the length of the belt and engaging the pins, and pin engagement grooves formed in the blocks and engaging the pins, wherein one or a plurality of sets of the link plates are interconnected by mutual pins in an endless manner. The pin engagement grooves are formed with recesses capable of compensating for the canting of the paired pins as they rotate about their longitudinal axes in passage around a pulley.

Abstract: A chain-belt for engagement with the pulleys of a continuously variable transmission consists of interleaved sets of chain links joined for articulation by a joint which has a rocking action. The joint includes a pair of pins. A small camber is introduced into one or both of the pins to create a spring load between the pins and the links to retain the pins in the chain during handling and assembly. Each chain link includes a pair of spaced apertures adjacent the opposite ends; each aperture has a generally hour-glass shape with the enlarged ends receiving the pins. Also, each chain link has a pair of oppositely disposed tabs adjacent one end with the location of the tabs on the links alternating on adjacent links of each set. In addition the outermost two links of each set of links has a width substantially less than the width of the inner links in that same set.

Abstract: The link chain is formed of elongated links (2) connected transversely by connecting joints (4) which are formed by pairs of connecting joint elements (1). The connecting joint elements, in cross section, are somewhat crescent-shaped or bent, oval, and define joint engagement surfaces in the region of the terminal ends, for engagement with link engagement surfaces formed in apertures (5) of the link elements (2). The convex side of an inner link element (1) of the pair fits against the concave side of an outer link element of the pair, which, in turn, bears with its joint engagement against the link engagement surface of the aperture.

Abstract: An endless transmission belt for use in continuously variable transmissions of the chain type with a number of link plates interconnected in an endless manner. The belt has blocks spaced along the length of the belt, pins spaced along the length of the belt and engaging the blocks, and link plates arranged in sets and pins, each of the link plates having a single opening formed therein. A plurality of sets of the link plates are interconnected by the pins in an endless manner. Each link plate has horizontal portions formed in such a manner as to continue with the side end faces, thereby defining the opening, via rounded portions for contacting the pins, and first and second notches are respectively formed in the upper and lower interior edges of the horizontal portions partially defining the opening. By virtue of this arrangement, stress received by the end faces of the rounded portions of each link plate is dispersed, thereby reducing the concentration of stress in any particular portions of the link plate.

Abstract: An endless transmission belt of the invention includes a plurality of sets of link plates and a plurality of pin pairs, each pair of pins linking one end of one set of link plates to an adjacent end of another set of link plates. A plurality of blocks are mounted on the link plates and extend around the circumference of the belt. Each of the blocks has a pin engagement groove defined by a circumferential contact surface for engaging a pin in the running direction of the belt, an opening and a pair of side walls each extending from the circumferential contact surface to the opening. One of side walls provides a radial contact surface for a pin. Each of the pins has a transverse cross-section defined in part by (1) a rocking surface for contact with its paired pin, (2) a first curved surface for radial contact with a sidewall of the pin engagement groove and (3) a second curved surface for contacting the circumferential surface of a block and the link plates.

Abstract: A plate-link chain for infinitely adjustable cone pulley drives, the link pivot elements of which, joining the individual chain links embodied by plate packets, are embodied as thrust members is disclosed. The thrust members are inserted into recesses of the plate-links, and with their end faces they serve to transfer frictional force between friction wheels and the plate-link chain. The embodiment is such that the length of the thrust members of individual links, defined crosswise to the direction of travel of the plate-link chain varies in a non-periodic sequence over the length of the chain.

Abstract: A multiple link drive belt for use in a Reeves-type drive has each link molded as an integral nylon plastic unit. Sloping edges of each link frictionally engage sloping flanges on driving and driven shafts to transmit power. Side surfaces extending between the sloping edges have recesses therein. Hinged members in each of these recesses engage hinged members of adjacent links. The hinges are held together by a pin extending through a bore in each hinge. Each link rotates about the axis of the pin so as to enable the belt to curve around the driving and driven shafts. The hinged members of adjacent links are longitudinally spaced from one another to provide a first gap along the axis of the pin. The diameter of the bores is greater than the diameter of the pin to provide a second gap in a direction perpendicular to the axis of the pin.

Abstract: A power transmission belt having a flexible chain link midportion 11 defining a longitudinally continuous belt structure having opposite laterally outer side portions. Mounting elements 14,15 protrude from the side portion at spaced intervals longitudinally of the belt and side elements 16 are freely adjustably mounted one each to the protruding mounting element portions 15. The side elements define an outer surface for engaging the sidewall of a drive pulley V-groove. The invention further comprehends the provision of positioning elements 26 for retaining the side elements on the mounting elements, with the outer surfaces 17 of the side elements generally parallel to the V-groove sidewalls of the pulley for facilitating facial engagement of the side elements with the sidewall of the pulley groove when brought thereinto.

Abstract: A continuous belt of a continuously variable transmission for transmitting a driving torque from an input pulley to an output pulley includes a plurality of blocks, links and pins. Each block includes first and second side engagement surfaces. When the continuous belt spans between the input and output pulleys, at least two different engagement points are defined between the blocks and the pulley. Each link includes first and second end portions, an intermediate portion, first and second connecting holes, an outer projection and an inner projection. The first and second connecting holes are defined within the first and second end portions. The outer projection projects from the first and end portion toward a lateral direction of the continuous belt. The inner projection projects from the first end portion in a direction opposite the direction of the outer projection. Each link has a pitch line of the link which passes through center points of the first and second connecting holes.

Abstract: A power transmission belt adapted for use in a pulley transmission, comprises a plurality of chains which are arranged in parallel with their pins of each chain positioned out of alignment with the pins of the adjacent chain, and a plurality of load blocks surrounding said plurality of chains. The load blocks functions to provide positive interference among vibrations of the chains so that the amplitude of vibration of the whole assembly is reduced.