An automatic tensioning apparatus is provided that includes a tensioning drive unit having: a longitudinally extending stationary base frame with a plurality of guides extending between a lower portion and an upper portion, and a plurality of rotatable feed wheels axially secured at the lower portion, as well as a translatable drive frame slidably coupled to the plurality of guides with a drive assembly coupled to the drive frame, the drive assembly including a drive motor and a tensile member interface for engaging and rotationally translating a tensile member. The tensioning drive unit further including a plurality of drive frame actuators actuatable to move the drive frame between a bottom frame position and a top frame position, as well as a sensor for at least indirectly sensing the position of the drive frame along a longitudinal base frame axis.

A method of operating a chain drive that includes sprockets. Tensile chain moments on the sprockets are determined and a specification value for operating the chain drive is determined therefrom in an automated manner. A corresponding assembly has a chain drive with sprockets and with a control device at least partly associated with the chain drive. The control device is configured for carrying out the method and a specification value for load distribution among the two drives for operating the chain drive is determined therefrom in an automated manner.

A synchronous drive is provided in which a non-circular rotor generates a fluctuating corrective torque to counteract a fluctuating load torque on a driven rotor. The angular orientation of the non-circular rotor can vary relative to the driven rotor so as to change the phase angle of the fluctuating corrective torque relative to the driving rotor. The arrangement may be applied in internal combustion engines with variable valve timing (VVT) systems, wherein the phase angle of a fluctuating load torque presented on a cam rotor, due to forces arising from actuation of intake and/or exhaust valves by the camshaft, varies relative to the crankshaft. The phase angle of the fluctuating corrective torque is also varied relative to the crankshaft to maintain phase relationship with the fluctuating load torque and thereby maintain reduced cam torsional vibrations and span tensions provided by the non-circular rotor during operation

A connection rod coupling assembly includes a settable shape mounting second component having a lateral, primary axis and a bearing assembly including a bearing assembly body. The bearing assembly body includes a substantially cylindrical outer surface and a center axis. The bearing assembly body is coupled to the settable shape mounting second component in a non-aligned configuration. That is, the bearing assembly body center axis is offset from the settable shape mounting second component primary axis. Thus, the position of the bearing assembly body center axis is adjustable by repositioning the settable shape mounting second component relative to a settable shape mounting first component on a swing lever. The adjustment of the bearing assembly body, in turn, adjusts the range of the ram assembly and the ram assembly body.

The present disclosure discloses an apparatus (100) for eliminating slack and vibrations of the chain (400) comprising a piston-cylinder arrangement. A first piston (10) is configured to be displaced inside the cylinder (20) of the piston-cylinder arrangement and a second piston (30) is configured to be displaced inside a cavity (40) defined inside the first piston (10) with the axis of the cavity (40) being coaxial with the axis (A) of the cylinder. A lubricating oil passage (50) defined to pass through the first piston (10), the second piston (30) and the cylinder (20) of the piston cylinder arrangement. The apparatus facilitates reduction in vibrations, slack elimination and automatic lubrication of the chain drive.

A vehicle propulsion system includes an electric motor having a hollow rotor shaft, an input drive sprocket connected to the hollow rotor shaft, a first chain mounted on the input drive sprocket, a transfer driven sprocket mounted on a transfer shaft, the first chain is also mounted on the transfer driven sprocket, a transfer drive sprocket mounted on the transfer shaft, a second chain mounted on the transfer drive sprocket, a final drive driven sprocket connected to a differential, the second chain is also mounted on the final drive driven sprocket, a first axle connected to an output of the differential, and a second axle connected to another output of the differential.

A chain tensioning device is adapted to be coupled to a vehicle body and to be adjacent to a chain, and includes a connecting segment, a metallic resilient segment, a fixing member and a guiding member. The connecting segment includes a securing portion adapted to be coupled to the vehicle body and an extending portion adapted to be under the chain. The resilient segment is connected to the extending portion of the connecting segment via the fixing member, and has a spring constant which ranges from 0.01 to 1000 N/mm, and a Young's modulus which ranges from 69 to 220 megapascals. The guiding member is connected to the resilient segment and is biased by the resilient segment for maintaining a tension of the chain.

A mechanical system with a double-sided chain, composed of a driving wheel (S1), a tensioner wheel (S2) for the chain (1), a driven wheel (S3) and a chain (1), which winds around the wheels (S1) and (S2), and engages the wheel (S3) on its outer side, characterized in that the wheel centres (S1), (S2) and (S3) are not collinear, whereas the position of wheel axis (S2) in relation to wheel axis (S1) and (S3) determines the line of operation of chain (1) and determines the optimal angle alpha between the direction of the force vector F and the perpendicular to the straight line joining the centres of tensioner wheel (S2) and driven wheel (S3), and passing through point (B) where force F1 is applied. while the value of the angle alpha is equal 15 degrees.

A connection rod coupling assembly includes a settable shape mounting second component having a lateral, primary axis and a bearing assembly including a bearing assembly body. The bearing assembly body includes a substantially cylindrical outer surface and a center axis. The bearing assembly body is coupled to the settable shape mounting second component in a non-aligned configuration. That is, the bearing assembly body center axis is offset from the settable shape mounting second component primary axis. Thus, the position of the bearing assembly body center axis is adjustable by repositioning the settable shape mounting second component relative to a settable shape mounting first component on a swing lever. The adjustment of the bearing assembly body, in turn, adjusts the range of the ram assembly and the ram assembly body.

An actuating device for orthosis including a housing, a motor, a transmission disposed in the housing, and an actuating arm. The transmission is operatively connected to the motor such that the motor provides power to the transmission. The transmission includes a first stage, a second stage, and a third stage. The first stage has a first sprocket, a second sprocket, and a first drive belt tensioned between the first sprocket and the second sprocket. The first sprocket is attached to a shaft of the motor. The second stage has a third sprocket, a fourth sprocket, and a second drive belt tensioned by the third sprocket and the fourth sprocket. The third sprocket is attached to the second sprocket of the first stage. The third stage has a fifth sprocket, a sixth sprocket, and a third drive belt tensioned by the fifth sprocket and the sixth sprocket. The fifth sprocket is attached to the fourth sprocket of the second stage. The transmission additionally includes a first shaft and a second shaft. The second sprocket, the third sprocket, and the sixth sprocket are attached to the first shaft, and the fourth sprocket and the fifth sprocket are attached to the second shaft. The actuating arm is operatively connected to the sixth sprocket of the third stage of the transmission such that the power provided to the transmission by the motor causes the actuating arm to provide an output torque.