Abstract: A bicycle derailleur comprises a derailleur body and a cable holder. The derailleur body is configured to be attached to a bicycle frame. The cable holder is configured to hold an electric cable.

Abstract: An oil inlet of a motor communicates with a first end of an oil pump through a first passage. A first oil sump of the motor communicates with a second end of the oil pump through a second passage. When the oil pump is rotating, a port at the first end is an oil outlet of the oil pump, and a port at the second end is an oil inlet of the oil pump. The first end of the oil pump communicates with a second oil sump through a third passage with a first valve. The second end of the oil pump communicates with the second oil sump through a fourth passage with a second valve. In this way, when the oil pump is reversing, coolant may be input into a motor cavity and accumulate in the motor cavity, so as to cool motor components in an immersion manner.

Abstract: A bicycle derailleur structure is mounted on a bicycle frame to correspond to a flywheel unit and includes a support arm, a screw rod, a tension bar, a gear shift unit. and a drive unit. The tension bar has an end having an interior space receiving an elastic member therein to be mounted on the support arm in an elastically oscillating manner. The gear shift unit includes two protector plates in threading engagement with screw rod, and first and second pulleys arranged between the two protector plates. The screw rod is operable to drive the gear shift unit in order to align a chain on the flywheel unit to align with the gear shift unit.

Abstract: A derailleur basically includes a base member, a movable member and a linkage assembly. The base member includes a first base member connecting section and a second base member connecting section. The movable member includes a first movable member connecting section and a second movable member connecting section. The linkage assembly includes an inner link member and an outer link member. The outer link is pivotally coupled to the second base member connecting section about a third pivot axis. The outer link is pivotally coupled to the second movable member connecting section about a fourth pivot axis. The outer link member has a power source receiving part that is configured to be arranged such that the power source receiving part traverses a reference line extending between the third pivot axis and the fourth pivot axis.

Abstract: A continuous variable transmission (CVT) system includes a drive clutch, a driven clutch and a continuous belt wherein the sheaves on one side of the CVT system have an incline of approximately 2 degrees different from the sheaves on the other side of the CVT system. The continuous belt has opposing faces, each face matching the angles of the sheaves that the belt engages.

Abstract: A bicycle gearshift mechanism has a base element, a pivot mechanism, a movable element, and a chain guide arrangement. The pivot mechanism connects the base element to the movable element. The chain guide arrangement is connected, rotatably about a rotary axle, to the movable element. The base element comprises a first attachment end, which is coaxial with respect to the rear-wheel axle or axis, and a second attachment end for coupling to the pivot mechanism.

Abstract: A chain for a chain drive includes alternating inner chain links and outer chain links, which are connected together in an articulated manner by means of a respective chain joint. Each outer chain link includes two outer plates, each of which comprises two openings and two pins, and the pins and openings are connected together by means of a respective compression connection such that the pins hold the outer plates at a distance from each other. The chain for a chain drive prevents the disadvantages known from the prior art and leading in particular to a higher fatigue strength. This is achieved in that a beveled joint is formed in the region of the compression connection between the pins and the openings in the outer plates.

Abstract: A hydraulic control circuit includes a pressure regulator valve, a first pilot valve, a second pilot valve, and a third pilot valve. A first pilot pressure is introduced as a source pressure into the primary solenoid valve that generates a primary signal pressure and a secondary solenoid valve that generates a secondary signal pressure. A second pilot pressure is introduced as a source pressure into a lock-up solenoid valve that generates the lock-up signal pressure. A third pilot pressure is introduced as a damping pressure into a primary regulator valve that controls a primary pulley pressure according to the primary signal pressure, and into a secondary regulator valve that controls a secondary pulley pressure according to the secondary signal pressure.

Abstract: A motor unit comprises a torque limiter and a transmitting structure. The torque limiter includes a first member and a second member. The first member and the second member are movable relative to each other in a state where a torque applied to the torque limiter is equal to or higher than a torque threshold. The first member and the second member are movable together with each other in a state where the torque is lower than the torque threshold. The transmitting structure includes a first race, a second race, a first intermediate element at least partially provided between the first race and the second race, and a second intermediate element at least partially provided between the first race and the second race.

Abstract: A belt pulley decoupler is provided which is to be arranged on a crankshaft of an internal combustion engine and has a hub provided for coupling to the crankshaft, and a connecting flange of which a distal face is in abutment with the hub in order to transmit torque from the hub to a belt pulley. The connecting flange having a geometry to facilitate a form fit for torque transmission both on the distal face and also on a proximal face which is intended to come into contact with a torsional vibration damper.

Abstract: Belt traps for belt drive systems function to arrest a failed drive belt or otherwise absorb energy of the failed drive belt to avoid or reduce damage to components of the belt drive system or objects adjacent to the belt drive system. Belt traps may include a channel configured to receive a portion of a drive belt and one or more protrusions to pierce, grip, or otherwise engage the failed drive belt.

Abstract: A device for cooling and lubricating a tool during a chip removal machining process, which includes: a first subsystem for cryogenic cooling that includes: a first entry configured to introduce CO2 in liquid state in a first conduit of the device; a first exit configured to supply CO2 in liquid state from a second conduit of the device; a third conduit located between the first and second conduit; and means for preventing the formation of dry ice in the first, second and third conduits; and a second subsystem for lubrication that includes means for supplying micro-particles of a cutting oil in liquid state; wherein the first subsystem and second subsystem are independent from each other, and wherein the first subsystem and second subsystem are configured to act either simultaneously or either one alone. Method of operation of the device.

Abstract: The present disclosure relates to transmission systems for vehicles and especially those for use in electric bicycles, where human power is augmented with electric motor derived power. The present disclosure includes various embodiments, where the electric motor is of the harmonic drive type and wherein there is provided a secondary axle or bracket which provides the output of the systems, driven by both the manual input and the motor input, and wherein these two inputs are insulated from one another by placement of one-way clutches, between the flex-spline and the secondary axle or bracket and between the bracket and the primary drive axle. A modular assembly for such transmission systems and a method of assembly and disassembly are also disclosed.

Abstract: An aircraft engine circulation system comprises a conduit arranged in use to communicate a lubricant to and from one or more bearings of an engine. The conduits define a space which comprises a material that is selected to change phase at a predetermined temperature.

Abstract: The present invention relates to a twisted cord for constituting a core wire of a power-transmission belt, the twisted cord including a plurality of primary twisted yarns that are bundled and secondarily-twisted, in which when secondary twist is untwisted by 25 cm, a difference in length between the longest primary twisted yarn L and the shortest primary twisted yarn S among the plurality of primary twisted yarns is 1 to 10 mm.

Abstract: A pulley guard to protect a pulley from debris. Such pulley guard can be positioned proximate a driven pulley of a belt-pulley system. Such belt-pulley system can be part of a working vehicle, such as a mower or other self-propelled vehicle, which includes an endless belt. A pulley to be protected against debris can be an output pulley of a power source that is used to drive mower blade(s) and/or drive wheels of the vehicle. One or more pulleys to be protected against debris can include any pulley of the belt-pulley system of a vehicle, such as a belt tensioning or idler pulley.

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.