Abstract: The present disclosure relates to transmission systems for vehicles and especially those for use in electric bicycles, where human power is augmented with electric motor derived power. The present disclosure includes various embodiments, where the electric motor is of the harmonic drive type and wherein there is provided a secondary axle or bracket which provides the output of the systems, driven by both the manual input and the motor input, and wherein these two inputs are insulated from one another by placement of one-way clutches, between the flex-spline and the secondary axle or bracket and between the bracket and the primary drive axle. A modular assembly for such transmission systems and a method of assembly and disassembly are also disclosed.

Abstract: A frame for a pedal driven vehicle, the frame having a first portion that defines an open channel. The frame includes fixture points for releasably securing a drive assembly having a crank axle to the frame, such that the drive assembly can be secured in the open channel, via the fixture points, so as to define an operational crank axis of the drive assembly. The frame defines one or more compartments for receiving a battery, so that the battery can be arranged in communication with the drive assembly for the transfer of motive power from the battery to the drive assembly (i.e. for driving the crank axle) whilst the battery is located in the compartment. The drive assembly is moveable in and out of the open channel in a movement which is in a non-axial direction of the channel.

Abstract: The present disclosure relates to strain wave gears, vehicle drive systems (10) including such gears and methods of torque and cadence measurement. The vehicle drive system (10) comprises a first rotational input, a second rotational input and rotational output (6), wherein the first rotational input is transmitted through a strain wave gear (5) to a first rotational input one-way bearing (34), and wherein the second rotational input is transmitted through a second rotational input one-way bearing (32) to the rotational output (6), the first (32) and second (34) one-way bearings being affixed to a secondary axle (330, 42), the secondary axle (42) driving the rotational output (6), wherein the second rotational input is provided by a primary axle (26), the primary (26) and secondary (42) axles being coaxial, the secondary axle (42) surrounding the primary axle (26), and wherein a strain gauge (84) is provided to measure the torque applied to the primary axle (26).

Abstract: A one-way bearing, a bearing assembly, and a free-wheeling mechanism for a bicycle are disclosed herewith. The bearing assembly, in one aspect, includes a one-directional bearing having an inner and an outer race, the one-directional bearing including a sprag clutch mechanism. The bearing assembly, according to this aspect, further includes a first thrust bearing and a second thrust bearing, wherein the inner and outer races of the one-directional bearing are formed to retain one or both of the first or second thrust bearings, and a one-directional bearing mechanism located between the inner and outer races. In at least one aspect, the inner race has a flange extending in a radially outward direction, the sprag clutch mechanism abuts the flange on an inner axial side of the flange, and the flange abuts the first thrust bearing on an outer axial side of the flange.

Abstract: A one-way bearing, a bearing assembly, and a free-wheeling mechanism for a bicycle are disclosed herewith. The bearing assembly, comprises a one-directional bearing having an inner and outer race, a first thrust bearing and a second thrust bearing, wherein the inner and outer races of the one-directional bearing are formed to retain one or both of the thrust bearings.

Abstract: The present disclosure relates to transmission systems for vehicles and especially those for use in electric bicycles, where human power is augmented with electric motor derived power. The present disclosure includes various embodiments, where the electric motor is of the harmonic drive type and wherein there is provided a secondary axle or bracket which provides the output of the systems, driven by both the manual input and the motor input, and wherein these two inputs are insulated from one another by placement of one-way clutches, between the flex-spline and the secondary axle or bracket and between the bracket and the primary drive axle. A modular assembly for such transmission systems and a method of assembly and disassembly are also disclosed.

Abstract: A transmission system is described comprising a first rotational input, a second rotational input and a rotational output, wherein the first rotational input and second rotational input may transmit a rotation to the rotational output, wherein one of the first rotational input and second rotational input is connected to the rotational output through a one way clutch, and wherein the other of the first rotational input and second rotational input is connected to the rotational output through an overrunning clutch, wherein said one way clutch and said overrunning clutch are rotationally coupled are described in the present disclosure. Further, there is described bicycles and vehicles including such a transmission system. Also described is a control system which may be used in electrical vehicles, including electric bicycles, having such a transmission system.

Abstract: A gearing system comprises a first rotational input, a second rotational input and a rotational output. The first rotational input and second rotational input may transmit a rotation to the rotational output, wherein one of the first rotational input and second rotational input is connected to the rotational output through a one way clutch, and wherein the other of the first rotational input and second rotational input is connected to the rotational output through an overrunning clutch, wherein said one way clutch and said overrunning clutch are rotationally coupled. The gearing system may be used in electric bicycles, but may also be used in other dual propulsion vehicles such as hybrid cars.

Abstract: The present disclosure relates to vehicle gearing systems, especially those used in electric bicycles, but may also be used in other dual propulsion vehicles such as hybrid cars. The vehicle gearing system comprises a first rotational input, a second rotational input and a rotational output. The first rotational input and second rotational input may transmit a rotation to the rotational output, wherein one of the first rotational input and second rotational input is connected to the rotational output through a one way clutch, and wherein the other of the first rotational input and second rotational input is connected to the rotational output through an overrunning clutch, wherein said one way clutch and said overrunning clutch are rotationally coupled.