Embodiments of this application provide a speed shifting apparatus, a control method thereof, a steering system, and a control method thereof, and relate to the field of mechanical transmission technologies. The speed shifting apparatus includes: an outer rotating wheel; an inner rotating wheel, where a rotation axis of the inner rotating wheel is parallel to and different from a rotation axis of the outer rotating wheel; and a plurality of meshing members, arranged along a circumferential direction of the inner rotating wheel or the outer rotating wheel. Either the outer rotating wheel or the inner rotating wheel is provided with a plurality of sliding grooves, and the plurality of sliding grooves are in a one-to-one correspondence with the plurality of meshing members.

Provided is a continuous variable transmission for a motorcycle having a radial engine, the transmission including a cone shaped gear, a driveshaft received in one end of the cone shaped gear, a gear plate having an angled geared surface configured to mate with the cone shaped gear, a drive clutch, a crank shaft extending through the drive clutch, and a plurality of fingers secured to the drive clutch and configured to move from a first position to a second position wherein the fingers are in a first position at a first speed and the fingers are at a second position, at a second speed.

A transmission comprising: a casing having: a first shaft having a truncated cone portion, a second shaft parallel to and spaced away from the truncated cone portion, a first gear mounted on the second shaft, the first gear being configured for rotation with the second shaft, the first gear being in connection with the first shaft, a linear actuator connected to the first gear, the linear actuator allowing to position the first gear at any one of a plurality of positions along the second shaft, the truncated cone portion having, at its beginning and its end, a respective one of a set of gears with a respective diameter and a respective number of teeth being proportionate to a diameter of the truncated cone portion, at least two counter-wound spiral gear tracks extending between the respective one of the set of gear s and another one of the set of gears.

A variable gear system for various embodiments of continuously variable transmissions comprises a gear including a radius, an axis, and spherical teeth spaced from each other by a constant pitch. The spherical teeth of the gear engage a splined shaft comprising a radius that varies nonlinearly along a length of the splined shaft, an axis running the length of the splined shaft, and splines along the length of the splined shaft. Further, a portion of the length of the shaft across a seam of the splined shaft includes a non-constant pitch between the splines.

A transmission comprising: a casing having: a first shaft having a truncated cone portion, a second shaft parallel to and spaced away from the truncated cone portion, a first gear mounted on the second shaft, the first gear being configured for rotation with the second shaft, the first gear being in connection with the first shaft, a linear actuator connected to the first gear, the linear actuator allowing to position the first gear at any one of a plurality of positions along the second shaft, the truncated cone portion having, at its beginning and its end, a respective one of a set of gears with a respective diameter and a respective number of teeth being proportionate to a diameter of the truncated cone portion, at least two counter-wound spiral gear tracks extending between the respective one of the set of gear s and another one of the set of gears.

A continuously variable transmission includes a driving member rotating about a first axis, a driven member rotating about a second axis, and an intermediate member interposed between the driving and driven members and rotating about a third axis configured to intersect the first and second axes. The intermediate member transfers torque from the driving member to the driven member. A method for forming a torque transfer member includes providing a base structure, wrapping a needle assembly around the base structure such that the needles extend outwardly therefrom, and affixing the needle assembly to the base structure. A method of manufacturing a needle assembly includes forming a series of pockets on a side of a ribbon, organizing a series of needles into a series of pockets, and affixing the series of needles into the series of pockets.

The invention relates to a transmission (2) which can be switched between at least three switching stages. A transmission in accordance with the invention has a frame (6) in which a first drive shaft (4) with a first gear (12) non-rotatably mounted thereon and a second drive shaft (20) with a second gear (24) non-rotatably mounted thereon, having longitudinal axes (8, 22) disposed in parallel with one another, are rotatably mounted, and the transmission has a switching device. The first gear (12) is in the shape of a truncated cone at least in regions, with a first end (14) and a second end (16) with different numbers of teeth, and has first main teeth (30) which extend completely from the first end (14) to the second end (16) of the first gear (12). The second gear (24) is in the shape of a truncated cone at least in regions, having a third end (26) and a fourth end (28) with different number of teeth, and has second main teeth (3) which extend completely from the third end (26) to the fourth end (28) of the second gear (24). The switching device is arranged to displace one either first gear (12) and the second gear (24) in parallel and relative to the respective other gear (12, 4) into a first, a second and a third switching position. In the first switching position the first end (14) of the first gear (12) is engaged with the fourth end (28) of the second gear (24), in the second switching position the second end (16) of the first gear (12) is engaged with the fourth end (28) of the second gear (24) and in the third switching position the second end (16) of the first gear (12) is engaged with the third end (26) of the second gear (24).