Disclosed herein are multi-turn drive assemblies, systems and methods of use thereof. The multi-turn drive assemblies enable a robot link member to have a maximum rotation of at least 360 degrees about an axis. The multi-turn drive assemblies can be incorporated into a robot arm for enabling 360 degrees rotation of one or more link members about an axis. The robot arm may be located in a transfer chamber of an electronic device processing system. Also disclosed are methods of controlling the multi-turn drive assemblies and related robots.

Disclosed herein are multi-turn drive assemblies, systems and methods of use thereof. The multi-turn drive assemblies enable a robot link member to have a maximum rotation of at least 360 degrees about an axis. The multi-turn drive assemblies can be incorporated into a robot arm for enabling 360 degrees rotation of one or more link members about an axis. The robot arm may be located in a transfer chamber of an electronic device processing system. Also disclosed are methods of controlling the multi-turn drive assemblies and related robots.

A crank assembly for a bicycle includes a crank axle, crank arms mounted to the crank axle to rotate the crank axle, a carrier shaft slidably mounted on the crank axle and configured to slide relative to the crank axle, and a sprocket mounted on the carrier shaft. A position sensor determines a relative position of a diametric axis of the sprocket relative to a central longitudinal axis of the crank arm at an end of a power stroke. Further, an actuator is operatively coupled to the carrier shaft to slide the carrier shaft, and a controller is configured to actuate the actuator to slide the carrier shaft relative to the crank axle based on input from the position sensor to change a start time of the power stroke of the sprocket.

The motorized drive according to the invention application is configured to open and/or close a wing of a barrier such as a door, main door, gate or swing shutter, a wall or sliding partition or other sliding wing. The motorized drive comprises includes a motor and a first reduction unit through which the motor can open or close the wing. The reduction unit comprises includes a first and a second toothed profile engaging together, thus realizing a gear with a variable transmission ratio depending on the angular and/or linear position of at least one of the two toothed profiles. At least one of the first and of the second toothed profile forms at least one toothed section having a pitch profile which is substantially non-circular or not formed by a simple arc of a circle or a straight line.

The motorized drive according to the invention application is configured to open and/or close a wing of a barrier such as a door, main door, gate or swing shutter, a wall or sliding partition or other sliding wing. The motorized drive comprises includes a motor and a first reduction unit through which the motor can open or close the wing. The reduction unit comprises includes a first and a second toothed profile engaging together, thus realizing a gear with a variable transmission ratio depending on the angular and/or linear position of at least one of the two toothed profiles. At least one of the first and of the second toothed profile forms at least one toothed section having a pitch profile which is substantially non-circular or not formed by a simple arc of a circle or a straight line.

A system includes a rotating drive and a linear drive. An input driven gear may be coupled to the rotating drive while a sun gear is coupled to the shaft of the input driven gear. A first counterweight may support an idler gear and an output gear. The first counterweight is coupled to the driven gear and which rotates with the driven gear. The idler gear is coupled to the sun gear and an output gear. The idler gear may rotate the output gear when the idler gear is translated around the sun gear. A second counterweight is coupled to the output gear and which rotates with the output gear when the output gear is rotated by the idler gear. An end portion of the second counterweight coupled to the linear drive moves in substantially straight line as the second counterweight rotates while also being translated around the sun gear.

A system includes a rotating drive and a linear drive. An input driven gear may be coupled to the rotating drive while a sun gear is coupled to the shaft of the input driven gear. A first counterweight may support an idler gear and an output gear. The first counterweight is coupled to the driven gear and which rotates with the driven gear. The idler gear is coupled to the sun gear and an output gear. The idler gear may rotate the output gear when the idler gear is translated around the sun gear. A second counterweight is coupled to the output gear and which rotates with the output gear when the output gear is rotated by the idler gear. An end portion of the second counterweight coupled to the linear drive moves in substantially straight line as the second counterweight rotates while also being translated around the sun gear.

The present invention relates to a gearing assembly suitable for use with a rotary engine, compressor or pump. Non-circular gears are used to drive rotors at different relative speeds to increase or decrease the volume of a series of chambers and provide the necessary requirements for intake, compression, combustion and exhaust cycles which are typical of an internal combustion engine. The non-circular gears may physically intermesh or be coupled by way of a belt or chain. The relative movement of the rotors can be controlled according to the application by the ratio of the major to minor axis of the non-circular gears. The non-circular gears may be easily removed without having to disassemble the entire gearing system.

The present invention relates to a gearing assembly suitable for use with a rotary engine, compressor or pump. Non-circular gears are used to drive rotors at different relative speeds to increase or decrease the volume of a series of chambers and provide the necessary requirements for intake, compression, combustion and exhaust cycles which are typical of an internal combustion engine. The non-circular gears may physically intermesh or be coupled by way of a belt or chain. The relative movement of the rotors can be controlled according to the application by the ratio of the major to minor axis of the non-circular gears. The non-circular gears may be easily removed without having to disassemble the entire gearing system.

A pinion gear, with a varied gear ratio, can be inline with a rack. When the rack moves, the pinion gear can rotate. This rotation can cause an interior of an electrical generator to rotate. Rotation of the interior of the electrical generator can cause an electricity to be produced and outputted.