Provided is a tricycle including: a tricycle body having a first frame pivoted to a second frame, the first frame having a crank, at least one wheel shaft being rotatably arranged on the second frame; a first linkage assembly arranged on the first frame, the first linkage assembly having a first chain sleeving a first and a second chain wheels, the first chain wheel being coupled to the crank; a second linkage assembly arranged on the second frame, the second linkage assembly having a second chain sleeving a third and a fourth chain wheels, and the fourth chain wheel being coupled to the wheel shaft; and a transmission module having a first and a second universal joints connected to two ends of a telescopic cylinder respectively, the first universal joint being connected to the second chain wheel, and the second universal joint being connected to the third chain wheel.

A sprocket having a gear tooth valley radius which varies around the sprocket perimeter provides additional gear torque multiplication to a rider, which is especially beneficial when climbing hills. In some embodiments, the sprocket is a bicycle chainring with reduced gear tooth valley radius over at least a portion of the chainring. In other embodiments, the sprocket is a bicycle rear wheel cassette cog with increased gear tooth valley radius over at least a portion of the cassette cog. Regions of both reduced and increased gear tooth valley radius may be present on a given sprocket. The sprocket valley floor surface may be rounded or may include N segments adjoined by N vertices. The segments of the valley floor surface may be curved or straight. The vertices of the valley floor surface may be curved or angled. Embodiments for bicycles and motorcycles are presented.

A saddle-type vehicle includes: a swing arm rotatably supporting a rear wheel; a vehicle body frame swingably supporting the swing arm via a pivot shaft; an electric motor; a driving side rotating body disposed at a position away from the electric motor and the pivot shaft and rotationally driven by the electric motor; a driven side rotating body fixed to the rear wheel; an endless power transmission member bridged between the driving side rotating body and the driven side rotating body; and an integral coupling bracket coupling the driving side rotating body and the pivot shaft.

An electric mobility apparatus that can include at least one electric carbon fiber component. The electric carbon fiber component incorporating a structural battery, the structural battery including energy storage devices, each of the energy storage devices having an anode core of a continuous carbon fiber, an electrolyte arranged on the at least one continuous carbon fiber core, and a cathode layer arranged to the continuous carbon fiber core on the electrolyte. An interface is electrically connected to the structural battery, the interface for inputting power for charging the structural battery and for outputting power.

The present invention provides an ebike comprising a wheel, a frame supported on the wheel, a motor for driving the wheel, and a battery for powering the motor. The battery includes a control panel that facilitates control of operation of the battery. For example, the control panel can include a power button to turn the battery on or off, plus and minus buttons to select different modes of the battery, and/or a series of lights that indicate a battery charge. Preferably, the series of lights form a closed loop around the power button and/or plus and minus buttons.

The present invention provides a bicycle comprising a wheel, a frame including a wheel support supported by the wheel, a motor mounted to the frame, and a speed sensor mounted to the wheel support. Preferably, the wheel is a rear wheel and the wheel support is a rear wheel support. The speed sensor is positioned to sense rotation of the rear wheel. In one embodiment, the frame can also include a chainstay and a seatstay, and the rear wheel support couples the chainstay to the seatstay. Preferably, the rear wheel support includes an inner face, and the speed sensor is secured to the inner face. For example, the rear wheel support can be a left rear wheel support and the entirety of the speed sensor is not visible from a left side of the bicycle.

A bicycle comprises a wheel, a frame supported on the wheel and including a tube hole, a motor mounted to the frame, a battery including battery hole extending completely through the battery, and a battery mounting pin extending through the battery hole and tube hole to secure the battery to the frame. In one embodiment, the tube includes spaced-apart first and second walls, with the tube hole through the first wall and a threaded hole through the second wall and aligned with the tube hole. Preferably, the battery mounting pin includes a threaded end, and the battery mounting pin is positioned through the tube hole and through the battery hole with the threaded end threaded into the threaded hole. The invention is also embodied in a method of mounting a battery to an ebike including the steps of aligning the battery hole with the tube hole and inserting a battery mounting pin through the tube hole and completely through the battery hole.

The teachings provided herein are generally directed to compact vehicle drive mechanisms that can be used in the design of a foldable, carry-on vehicle. The compact drive mechanisms presented herein, for example, have contributed to the advent of the compact, carry-on bicycles set-forth in the teachings which include drive-and-steering units and drive-and-chassis units.

A bicycle chainring includes a plurality of teeth extending from a periphery of the chainring wherein roots of the plurality of teeth are disposed adjacent the periphery of the chainring. The plurality of teeth include a first group of teeth and a second group of teeth, each of the first group of teeth wider than each of the second group of teeth. At least some of the second group of teeth are arranged alternatingly and adjacently between the first group of teeth, and wherein the periphery of the chainring is generally non-circular.

A bicycle chainring includes a plurality of teeth extending from a periphery of the chainring wherein roots of the plurality of teeth are disposed adjacent the periphery of the chainring. The plurality of teeth include a first group of teeth and a second group of teeth, each of the first group of teeth wider than each of the second group of teeth. At least some of the second group of teeth are arranged alternatingly and adjacently between the first group of teeth, and wherein the periphery of the chainring is generally non-circular.