A movable rack assembly may include an input shaft, a driven gear, an adjustable rack, an interference plate, and a contact tab. The input shaft may extend along an input axis. The input shaft may include a worm gear segment disposed along the input axis between a first end and a second end. The driven gear may be enmeshed with the worm gear segment, define a maximum outer circumference, and be rotatable about a driven axis nonparallel to the input axis. The interference plate may be fixed to the driven gear. The interference plate may include a radial arm extending past the maximum outer circumference of the driven gear. The contact tab may extend from the input shaft and be axially offset from the worm gear segment in selective engagement with the radial arm at a predefined travel limit of the driven gear to halt rotation at the input shaft.

Provided is a rotary actuator unit using simple link structure, and a robot joint unit employing the same. The rotary actuator unit comprises a first input part 10, a second input part 20, an output link member 30, an intermediate link member 40, an output side shaft OP, an intermediate shaft MP, and an input side shaft IP. The first input part 10 and the second input part 20 constitute an input side link mechanism L1 having two degrees of freedom. The intermediate link member 40 and the output link member 30 constitute an output side link mechanism L2. A tip of the input side link mechanism L1 and a base end of the output side link mechanism L2 are rotatably supported around the input side shaft IP. A two dimensional position of the input side shaft IP is freely manipulated by controlling a first liner actuator 11 of the first input part 10 and a second linear actuator 21 of the second input part 20. A rotation of the output link member around the output shaft OP is used as an output.

A prime mover includes a stator fixed to a housing, and a rotor rotatable relative to the stator. The prime mover is capable of outputting torque from the rotor by being supplied with electric power. A speed reducer is capable of reducing the torque of the prime mover and outputting the reduced torque. The speed reducer includes a sun gear rotatable integrally with the rotor, and planetary gears capable of revolving in a circumferential direction of the sun gear while rotating in a state of meshing with the sun gear. A gear width of the sun gear is set such that a length in the axial direction by which the sun gear and the planetary gear are overlapped is smaller than a gear width of the planetary gear.

An assembly is provided for an aircraft propulsion system. This assembly includes a first actuator, a second actuator and a linkage system. The linkage system is configured to transfer torque between the first actuator and the second actuator. The linkage system includes a first linkage shaft, a second linkage shaft and a gearbox. The first linkage shaft has a first centerline. The second linkage shaft has a second centerline offset from the first centerline. The gearbox is coupled to and is between the first linkage shaft and the second linkage shaft.

An input cam having a recessed track for establishing a desired dwell time for a plurality of rotatable permanent magnets and an output cam having a recessed track for maximizing the harnessing of linear motion energy and to apply the harnessed energy to a rotary output are provided to improve the efficiency of a magnetic transmission.

A human-powered generator includes a frame and a pedal crankset and crankset sprocket rotatably mounted on the frame, a flywheel rotatably mounted on the frame including a flywheel-crankset sprocket a flywheel-countershaft sprocket, a countershaft rotatably mounted on the frame including a countershaft-flywheel sprocket and a countershaft-alternator sprocket, and an alternator including an alternator drive shaft and an alternator sprocket. The human-powered generator also includes a crankset-flywheel drive chain, a flywheel-countershaft drive chain, and a countershaft-alternator drive chain. A pedaling cadence at the pedal crankset of between approximately 60 RPM and approximately 100 RPM achieves an alternator drive shaft RPM of between approximately 2,000 RPM and approximately 5,000 RPM.

An operation device including a combination of a rotation unit and a linear motion unit. The rotation unit includes a link actuation apparatus and a rotation actuator. The link actuation apparatus includes a proximal end side-link hub, and a distal end side-link hub coupled thereto through three or more link mechanisms so as to enable a varying attitude relative thereto. The link actuation apparatus is mounted to an output shaft of the rotation actuator such that a central axis of the proximal end side-link hub forms an angle relative to an axis of rotation of the rotation actuator. The linear motion unit includes a linear actuator serving as an output portion thereof, and the rotation unit is mounted to this linear actuator.

An operation device including a combination of a rotation unit and a linear motion unit. The rotation unit includes a link actuation apparatus and a rotation actuator. The link actuation apparatus includes a proximal end side-link hub, and a distal end side-link hub coupled thereto through three or more link mechanisms so as to enable a varying attitude relative thereto. The link actuation apparatus is mounted to an output shaft of the rotation actuator such that a central axis of the proximal end side-link hub forms an angle relative to an axis of rotation of the rotation actuator. The linear motion unit includes a linear actuator serving as an output portion thereof, and the rotation unit is mounted to this linear actuator.

Described herein is a continuously variable transmission (CVT) with oscillating racks. The CVT includes an input shaft and a plurality of cams that are coupled with the input shaft. The cams are configured to rotate with a rotation of the input shaft. The CVT also includes a plurality of racks that are coupled to respective cams. The racks are configured to oscillate with the rotation of the input shaft. The CVT further includes a plurality of pinions that are coupled to respective racks and a plurality of intermittent shafts that are coupled with respective pinions. The CVT also includes an output shaft that is coupled with the intermittent shafts. The output shaft is configured to rotate with a uniform rotation and a speed ratio relative to the rotation of the input shaft. Because the CVT does not use friction elements, many downsides of conventional CVTs may be mitigated.

Described herein is a continuously variable transmission (CVT) with oscillating racks. The CVT includes an input shaft and a plurality of cams that are coupled with the input shaft. The cams are configured to rotate with a rotation of the input shaft. The CVT also includes a plurality of racks that are coupled to respective cams. The racks are configured to oscillate with the rotation of the input shaft. The CVT further includes a plurality of pinions that are coupled to respective racks and a plurality of intermittent shafts that are coupled with respective pinions. The CVT also includes an output shaft that is coupled with the intermittent shafts. The output shaft is configured to rotate with a uniform rotation and a speed ratio relative to the rotation of the input shaft. Because the CVT does not use friction elements, many downsides of conventional CVTs may be mitigated.