Abstract: When a contact area with a chain guide is reduced by a back surface of a link plate having a convex portion, a friction coefficient in a fluid lubrication region is reduced. A coating film containing 10% or more of chromium is on the link plate. A friction modifier made of a molybdenum compound and including with a lubricating oil promotes generation of MoS2 by the coating film, and prevents an increase in a friction coefficient in a boundary lubrication region.

Abstract: A bicycle derailleur comprises a derailleur body, a charging port, a charging-port cover, and a cover connector. The charging port is configured to be detachably connected to a charging cable to charge an electric power source. The charging-port cover is configured to be detachably attached to the charging port. The charging-port cover has a detachment state in which the charging-port cover is detached from the derailleur body to allow connection between the charging port and the charging cable. The cover connector is configured to couple the charging-port cover to the derailleur body in the detachment state.

Abstract: A cover member configured to cover a drive-power transmission member is fixed to a swing arm with a simple structure. A saddle-ride type vehicle includes a swing arm swingable up and down, a rear wheel supported at a rear end portion of the swing arm, an endless drive-power transmission member extending along the swing arm in a front-rear direction and configured to transmit drive power of a power unit to the rear wheel, a cover member fixed to the swing arm and covering the drive-power transmission member, and a slider provided on an upper face of the swing arm and configured to receive the drive-power transmission member. The cover member includes a fastening portion that is fastened to the swing arm by a fastener and an engagement portion that engages with the slider.

Abstract: A device for retaining a bicycle chain on a sprocket includes a base plate defining a plurality of fastener openings centered on an origin. A center of each of the plurality of fastener openings is disposed at a first radial distance from the origin. The origin defines an axis extending substantially orthogonally from a plane defined by two lines extending from the origin and at least two centers of the centers of the plurality of fastener openings. A first guard is secured to the base plate and includes a first guard retaining surface including a first curved surface defined by a second radial distance from the axis that is greater than the first radial distance and a first guard guiding surface having a first end adjacent the first guard retaining surface and a second end distal from the first end. The first end is disposed at the second radial distance from the axis. The second end is disposed at a third radial distance from the axis. The third radial distance is greater than the second radial distance.

Abstract: An electrically powered bicycle equipment has an attachment/detachment seat for an electric power supply unit, and a latch assembly for holding the electric power supply unit in the seated state includes a slider having a head and a back. Either the electric power supply unit or the equipment has a sliding seat for the slider, the other one has a retaining seat for the head. The sliding seat accommodates the back of the slider, which has a peripheral groove and a ring gasket housed in the peripheral groove. The groove has two aligned sections and a deeper intermediate section between them. When the slider is in the fully advanced position, a gasket portion bridges the intermediate section between the two aligned sections, and when the slider moves back, the gasket portion can curve towards the bottom of the intermediate section of the peripheral groove.

Abstract: Two embodiments of a false tooth limit the damage to a toothed belt and of a bearing layer of a base of the toothed belt, which in general comprises cables or textiles. The false tooth comprises a longitudinal bar and a bushing which extends transversally from the longitudinal bar. In the first embodiment the longitudinal bar is tapered towards a free end of the bushing while in the second embodiment the longitudinal bar is profiled, i.e., has a flank for contacting the toothed belt which is convex towards the outside when viewed in transversal section. The false teeth are advantageously applied on toothed belts comprising grooves which cut the teeth, enabling a reduction of the thickness of the tooth during the winding. A method and a semi-finished workpiece are also disclosed.

Abstract: A CVT belt cooling system is provided. The system includes a housing that retains within the housing a variable speed motor and a fan blade coupled to the variable speed motor. The system also includes an integrated microprocessor controller coupled to the housing and electrically coupled to the variable speed motor and coupled to a belt temperature sensor. The housing is configured to couple to a housing of a CVT to provide additional cooling air to the CVT belt. The temperature of a belt of the CVT is determined by the belt temperature sensor and based on the determined temperature, and the integrated microprocessor controller controls the speed of the motor and thereby the speed of the fan to control the amount of additional cooling air flowing into the CVT to cool the belt.

Abstract: Belt traps for a belt drive system include a bracket configured to receive at least a portion of a pulley to capture a failed drive belt between the bracket and a pulley. The pulley may be a tensioner pulley and may be biased in a direction towards the bracket. The bracket may include a relief portion configured to receive at least a portion of the pulley. The relief portion may include an opening or a recess that is sized and shaped to receive at least a portion of the pulley.

Abstract: By mounting a line blind valve (2) between a grease container (1) and a grease lubrication pump (3) replacement and mounting of the grease container can take place without leak of grease during the mounting as the outlet section must turn downwards during the mounting. By providing the installation with a line blind valve this can block grease leakage during the mounting and thereafter be opened. The valve (2) includes a flat central part (10) with an opening (11) which part can be displaced in relation to an upper positioned inlet section (4) and a lower positioned outlet section (8) and by displacement of the slide open and close for passage. In order to keep these parts (4, 8, 10) together a magnet (6,7) is embedded in each of the two parts (4, 8) by which a sealed connection is secured with no air infiltration and metal particles held back.

Abstract: A drive sheave assembly of a continuously variable transmission is provided that includes a post, a fixed sheave, a movable sheave assembly, a sleeve and an engine braking assembly. The engine braking assembly includes an axial activation member, a one-way engagement member and a flange. The axial activation member is statically mounted within a central recess of the fixed sheave. The axial activation member is movably connected with the one-way engagement member. A central passage of the one-way engagement member is configured to engage a portion of the sleeve. The flange is coupled to the one-way engagement member to selectively engage a side of an endlessly looped member with axial movement of the one-way engagement member during an engine braking condition.

Abstract: A rear derailleur assembly for mounting to a bicycle, wherein the bicycle includes a frame, includes an upper body for operationally engaging the rear derailleur assembly to the frame. The rear derailleur assembly also include a chain cage for engaging a chain of the bicycle; a controller pivotally connected to the upper body; and a lower body operationally connected to the chain cage, pivotally connected to the controller, and pivotally connected to the chain cage. The lower body includes a damper assembly for providing rotational resistance as the chain cage rotates in a first direction about the pivot axis.

Abstract: A bicycle front derailleur is provided, including: a base, configured to be mounted to a bicycle frame; a linkage mechanism, including a connection portion configured to be connected with a cable, the linkage mechanism being swingably connected to the base; a chain guide, swingably connected to the linkage mechanism; and an adjustment assembly, disposed on the base, including a holder movably disposed on the base and an adjustment member, the holder being configured to be connected with a sheath for driving the cable, the adjustment member being movably disposed on the base and adjustable to drive the holder to move relative to the base.

Abstract: A rear derailleur of a bicycle includes a fixing portion connected to a frame of the bicycle, a linkage assembly pivotally connected to the fixing portion, a moving portion pivotally connected to the linkage assembly, a chain guide assembly connected to the moving portion, a driving assembly, a rechargeable battery for providing an electrical energy required for the motor, a coil, and a wireless charging circuit for receiving an electric power of the coil for charging the rechargeable battery. The driving assembly includes a motor including and a driving gear assembly connected to the linkage assembly. The motor includes an output shaft for driving the driving gear assembly and for driving the linkage assembly to pivot via the driving gear assembly, thereby to drive the moving portion and the chain guide assembly to move. The coil receives an external charging power and is disposed on the fixing portion, the moving portion, or the linkage assembly.

Abstract: A belt pulley of a washing machine drum made of a plastic material, comprising a hub, a circumference of the belt pulley to receive a belt, a substantially circular dividing rib dividing the belt pulley to the inner and outer concentric section with a plurality of reinforcing ribs, wherein the dividing rib is arranged on a line of a polygon having the centre in the belt pulley axis and exhibiting corners, into which, from a side facing the hub, a portion of the outermost ribs lead, said ribs being part of a plurality of reinforcing ribs of the inner section, wherein at least a portion of these ribs leading into the corners of the dividing rib run, extend along a line of polygons, preferably hexagons, which are radially arranged in the inner section and in contact with each other along one of their sides, wherein, from at least one said corner of the dividing rib on the side facing the outer circumference, at least one arc-shaped rib of the outer section originates, and its free end contacts the outer circumfe

Abstract: A pedal driven cycle comprising a belt drive connecting a power input sprocket to a driven sprocket along a chain line; an outer protective belt drive cover plate having a footprint which substantially coincides with a side profile of the belt drive along at least a major portion of its length of travel so that the outer cover plate does not extend beyond an outer surface of the belt drive; and fixtures for mounting the outer protective belt drive cover plate to the cycle in parallel with the chain line and laterally spaced apart from a side edge of the belt drive to provide a clearance, with fore and aft adjustment.

Abstract: An individual chain wheel for a bicycle front crank arrangement for engaging in a drive chain includes a plurality of teeth formed on a circumference of the chain wheel and having a first and a second group of teeth. The teeth of the second group of teeth are arranged in an alternating manner between the teeth of the first group of teeth. Each tooth has a load flank via which force is transmitted between an adjacent roller of the drive chain and the respective tooth. Each tooth of the first group may also have at least one profile with an opening in the vicinity of the flank, in which a portion of an inner link plate of the drive chain, which portion protrudes beyond the roller, engages.

Abstract: A utility vehicle includes a plurality of ground-engaging members, a frame supported by the ground-engaging members, and a powertrain assembly. The powertrain assembly includes an engine, a shiftable transmission, a continuously variable transmission, and a charger. Additionally, the utility vehicle may include a cooling assembly fluidly coupled to at least the engine and the charger.

Abstract: A vehicle may include a continuously variable transmission which requires non-recycled air. The continuously variable transmission may provide non-recycled air to a first number of sheaves of the continuously variable transmission with a second number of air supply conduits, the second number being less than the first number. A cover of the continuously variable transmission may have a unitary body.

Abstract: A rear derailleur of a bicycle includes a fixing portion connected to a frame of the bicycle, a linkage assembly pivotally connected to the fixing portion, a moving portion pivotally connected to the linkage assembly, a chain guide assembly connected to the moving portion, a driving assembly, a rechargeable battery for providing an electrical energy required for the motor, a coil, and a wireless charging circuit for receiving an electric power of the coil for charging the rechargeable battery. The driving assembly includes a motor including and a driving gear assembly connected to the linkage assembly. The motor includes an output shaft for driving the driving gear assembly and for driving the linkage assembly to pivot via the driving gear assembly, thereby to drive the moving portion and the chain guide assembly to move. The coil receives an external charging power and is disposed on the fixing portion, the moving portion, or the linkage assembly.

Abstract: Described is a generator for an engine-driven power system. The generator having a generator shaft, a sleeve coupler, a first pulley, and a second pulley. The generator shaft, which is shaped at an end to define a first tapered surface, rotates a rotor relative to a stator. The sleeve coupler is shaped to define a bore with a second tapered surface. The bore receives the end of the generator shaft. The first pulley has a center hole to receive the sleeve coupler. The second pulley shares an axis of rotation with the first pulley and transfers a rotational force to the generator shaft and to the sleeve coupler.