The present invention relates to a cam apparatus of a portable sublimation printer, which can simultaneously implement platen roller up/down and paper pickup roller up/down operations with one cam in a portable sublimation printer, and can constitute a thin and light portable sublimation printer.

A power transmitting component having a actuator with a lead screw, which is driven by a motor and a transmission, a pusher assembly driven by the lead screw, and a clutch fork. Translation of the pusher coordinates movement of the clutch fork along its axis.

A universal joint for use in a downhole drill string includes a planetary gear to convert eccentric rotation in the drill string to axial rotation.

A hub assembly, including a hub axle; a hub, which is rotatably sleeved on the hub axle; a planetary gear assembly, which is arranged on the hub axle and in the hub and is used for transmitting a driving force to the hub; a power input member, which is rotatably sleeved on the hub axle and is used for providing a driving force for the planetary gear assembly; a control assembly, which acts on the planetary gear unit and is used for switching a transmission path for the driving force; an electric transmission assembly, which acts on the control assembly so as to switch a transmission path for the driving force; and a driving electric motor, which is arranged in the hub and is used for providing a driving force for the hub.

An apparatus includes a gearset that includes an input gear configured to be rotated by an input shaft, first and second one-way clutches, first and second output gears configured to drive rotation of an output shaft via the first and second one-way clutches, respectively, and an idler gear. The second output gear has a smaller outer diameter than the first output gear. The input gear is configured to (i) rotate the first output gear in a first direction and (ii) rotate the idler gear in the first direction. The idler gear is configured to rotate the second output gear in a second direction opposite the first direction. The first and second one-way clutches are configured to allow the first and second output gears to drive rotation of the output shaft in a single predetermined rotational direction regardless of a rotational direction of the input shaft.

Described herein are gears having magnetic properties with strategic positioning of the magnetic portion(s) of the gears. This allows for multiple gears to be used in a gearing system without the need for the gears to touch thereby eliminating the need for lubricants and limiting wear on the gears in the system while also reducing heat generated by the system and the need for additional cooling systems.