Abstract: It is provided an element for a continuously variable transmission belt, in the form of metallic plate supported by annular rings and arranged in a direction of thickness thereof along an annulus of each of the annular rings, wherein said element has a trapezoidal body portion, and a triangular head portion connected to an outer end of said body portion as seen in a radial direction of the continuously variable transmission belt, said body portion and said head portion cooperating to define therebetween ring accommodating slots for accommodating said annular rings; and wherein the head portion of said element has a thickness which decreases as the head portion extends in a direction away from said ring accommodating slots, and has a protruding section formed on one of opposite pressure surfaces thereof, and a recessed section which is formed in the other of said opposite surfaces such that the recessed section is engageable with another of said elements which is adjacent to said each element.

Abstract: A driving belt and method of assembling the same, which can fit a ring with elements easily, and which can prevent detachment of the ring from the elements. In a driving belt, an endless ring is accommodated in a recess of elements arranged annularly in a manner to situate the recess to open to an outer circumferential side, and the elements are interlinked pivotally with respect to an opposed face of an adjoining element.

Abstract: A power transmission chain (1) has long metal links (2) and connection members (200) including first and second pins (3, 4). The longitudinal direction of the long links (2) is along the travel direction (X1) of the chain. The longitudinal direction of the first and second pins (3, 4) is along the width direction (W1) of the chain. The links (2) and the first and second pins (3, 4) form fiber flows (41, 43), each extending in a predetermined direction. The predetermined direction is parallel to or intersects the lengthwise direction of the links (2) and the first and second pins (3, 4) where the fiber flows (41, 43) are formed at a predetermined angle or smaller.

Abstract: A composite driving belt provided with a carrier and a plurality of transverse elements assembled slidably thereon, the carrier including one or more bands, preferably composed of a plurality of endless metal bands disposed radially around each other, each element being provided with a radially outward directed carrier contact plane for contacting a radial inner contact plane of the carrier while in operation, wherein the contact plane of both the carrier and the element have a non profiled surface. In particular the roughness and shape of the relevant contacting faces of a belt are adapted to achieve a hydrodynamic lubricating condition, while the lubricating oil is defined to meet the requirements of an improved efficiency push belt.

Abstract: A continuously-variable-ratio transmission belt includes a beltlike continuity element having a body made of elastomeric material and in turn having inner teeth and outer teeth and a number of threadlike longitudinal inserts embedded inside the body; and a number of separate friction blocks which are made of plastic material, are co-molded onto the continuity element so as to each incorporate one tooth of the inner teeth and one tooth of the outer teeth, and are each defined by two lateral surfaces converging inwards of the belt and cooperating with respective sides of a groove of a trapezoidal-grooved pulley.

Abstract: Clearance Cs during a no-load stop and allowable value Cto of total clearance Ct obtained as a sum of clearance Ch occurring due to Hertzian stress are stipulated to a value less than height h of male coupling 28 along with an allowable value &sgr;hmo of the maximum Hertzian stress acting on rocking edge 26 being stipulated to a value less than an upper limit value &sgr;ho of the Hertzian stress that satisfies the opposing pitching lifespan. The radius of curvature R of the rocking edge is set within a range that satisfies R1≦R≦R2 for the radius of curvature R1 determined in correspondence with the allowable value &sgr;hmo of the maximum Hertzian stress and the radius of curvature R2 determined in correspondence with the allowable value Cto of the clearance between the total elements.

Abstract: An element includes a body having a thin region in its substantially half lower portion and a head joined to the body by a neck. When the element is blanked out of a metal sheet, an excess amount of metal produced by pressing the substantially half lower portion of the body under a pressing load applied by a forming punch and a counter load applied by a counterpunch flows from the body into the metal sheet positioned on opposite side of the neck, and a metal flow is produced into laterally spaced ends of the neck. After the metal flows have occurred, the element is fully blanked out of the metal sheet by the forming punch. In the element, the head has relatively thick laterally spaced ends, and the head and the body have respective thicknesses equal to or smaller than the thickness of the head. The body includes a substantially half upper portion exclusive of the thin region, and has laterally spaced side end regions positioned on opposite side of a lower region of the neck.

Abstract: By defining the contact ratio obtained by dividing the lateral width of a saddle surface of metal elements of a metal belt for a continuously variable transmission by the lateral width of a metal ring, the transmission capacity and durability of the metal belt can be enhanced. By gradually increasing the width of the metal ring in a state in which the lateral inner edges of the metal ring are in contact with the neck parts of the metal elements so as to gradually decrease the contact ratio, accompanying it the percentage change in the power transmission capacity gradually increases from the negative side and changes positive at a predetermined contact ratio.

Abstract: A device for transmitting motion comprises a flexible elastomeric element and at least one rigid element in surface contact with one another, wherein the surface of said flexible elastomeric element that comes into surface contact with said rigid element has been surface treated with a halogenated polyether.

Abstract: A drive belt is disposed to transmit power between a pair of sheaves. The sheaves each have an axially adjustable member to vary the transmission ratio between the sheaves. The drive belt has a plurality of block members retained in endless fashion by a pivotal link chain mechanism. The blocks are loaded in compression during a portion of the travel between the sheaves and the chain is loaded in tension during another portion of the travel between the sheaves. The blocks transmit power when loaded in compression and the chain transmits power when loaded in tension. The drive belt therefore transmits power during both portions of travel between the sheaves. A lubrication and cooling liquid is supplied to one sheave at a location near the contact point of the drive belt.

Abstract: A rubber endless track belt assembly for use in a crawler type track mechanism, which has a rubber endless track belt and a plurality of metal cores embedded at an equal spaced distance to one another in the belt along the longitudinal direction thereof. Each of the metal cores is provided with a pair of intermediate guide lugs spaced apart from each other and projecting outwardly on the inner peripheral side of the belt, a pair of wing portions each projecting horizontally in the transverse direction of the belt and embedded therein, and a pair of flat surface zones to which bogie wheels are thrustedly and rotatingly contacted, each of which zones being formed between the guide lug and the wing portion so as to extend in the longitudinal direction of the belt over the width of the wing portion and to be exposed on the inner peripheral side of the belt.

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 rocker joint for a drive chain or a chain-belt comprising a pair of joint members of like cross-section and having front surfaces which rock or roll on one another. The joint members each have a front surface defined by a first radius and a back surface defined by a second and a third radius both progressively smaller than the first radius. A rocker joint pair of members fits into each group of aligned apertures in the interleaved sets of links to join the links and permit articulation of the chain. The link apertures are generally round and have a surface substantially engaged by a back surface of a pivot member.