The present invention relates to a portable motor assembly comprising a case, a control module disposed in the case, a motor wrapped up with a friction wheel for connecting to the case and controlled by the control module for rotation, a fixing base connecting to a bottom of the case and having a clamp for fixing to a seat tube of a bicycle and at least one tension spring for pulling down the fixing base and making the friction wheel surrounding the motor tightly press against a surface of a rear wheel of the bicycle to drive a rear wheel of the bicycle.

The present invention relates to a portable motor assembly comprising a case, a control module disposed in the case, a motor wrapped up with a friction wheel for connecting to the case and controlled by the control module for rotation, a fixing base connecting to a bottom of the case and having a clamp for fixing to a seat tube of a bicycle and at least one tension spring for pulling down the fixing base and making the friction wheel surrounding the motor tightly press against a surface of a rear wheel of the bicycle to drive a rear wheel of the bicycle.

The present invention relates to an electric drive system for a bike comprising a portable electric friction drive device (1) and a bike bracket (13) configured to be mounted on a bike. A first drive device attachment point (3) is located at a rear part of the friction drive device. A second drive device attachment point (4) is located between the front part of the friction drive device and the rear part of the friction drive device so that the friction drive device is configured to rest against the second bracket attachment point (4). An inclination control arrangement (2) is configured to control the inclination of the imaginary line between the second drive device attachment point and a contact point (9) of the drive wheel (9) by adjusting the tilt of the friction drive device over the second drive device attachment point. Further, the invention relates to a portable electric friction drive device. Yet further, the invention relates to bike (60, 70) having at least one wheel, comprising the electric drive system, wherein the drive wheel is arranged to be contactable to the tire of said wheel at said contact point.

The present invention relates to an electric drive system for a bike comprising a portable electric friction drive device (1) and a bike bracket (13) configured to be mounted on a bike. A first drive device attachment point (3) is located at a rear part of the friction drive device. A second drive device attachment point (4) is located between the front part of the friction drive device and the rear part of the friction drive device so that the friction drive device is configured to rest against the second bracket attachment point (4). An inclination control arrangement (2) is configured to control the inclination of the imaginary line between the second drive device attachment point and a contact point (9) of the drive wheel (9) by adjusting the tilt of the friction drive device over the second drive device attachment point. Further, the invention relates to a portable electric friction drive device. Yet further, the invention relates to bike (60, 70) having at least one wheel, comprising the electric drive system, wherein the drive wheel is arranged to be contactable to the tire of said wheel at said contact point.

A motorcycle loader 100 for moving a motorcycle 10 without turning the motorcycle 10 on, and in particular, moving the motorcycle 10 to an elevated surface by attaching a friction wheel 102 to one of the tires 16 of the motorcycle 10 using a frame 110 that attaches to the motorcycle 10, and uses a motor 103 operatively connected to the friction wheel 102 to power the friction wheel 102, which causes the motorcycle wheel 16 to turn, thereby mobilizing the motorcycle 10. A controller 104 connected to the motor 103 of the motorcycle loader 100 can control the power, direction, and speed of the motor 103. The controller 104 can be connected to the battery of the motorcycle 10 to power the friction wheel 102. A clamp 160 operatively connected to the friction wheel 102 can be used to engage or disengage the friction wheel 102 from the tire 16 of the motorcycle 10.

A propulsion device for a bicycle can include a mounting assembly for releasably coupling the propulsion device to the bicycle, a motor, a power source selectively providing power to the motor, a gear assembly, and two frictional drive components coupled to the gear assembly. The two frictional drive components can be movable between an engaged configuration and a disengaged configuration. In the engaged configuration, the two frictional drive components are frictionally engaged with a side of a wheel of the bicycle such that the wheel is arranged between the two frictional drive components. In the disengaged configuration the two frictional drive components are disengaged from the wheel. The motor can drive the gear assembly: (i) to move the two frictional drive components into the engaged configuration, and (ii) to rotate at least one of the two frictional drive components to rotate the wheel of the bicycle.

A propulsion device for a bicycle can include a mounting assembly for releasably coupling the propulsion device to the bicycle, a motor, a power source selectively providing power to the motor, a gear assembly, and two frictional drive components coupled to the gear assembly. The two frictional drive components can be movable between an engaged configuration and a disengaged configuration. In the engaged configuration, the two frictional drive components are frictionally engaged with a side of a wheel of the bicycle such that the wheel is arranged between the two frictional drive components. In the disengaged configuration the two frictional drive components are disengaged from the wheel. The motor can drive the gear assembly: (i) to move the two frictional drive components into the engaged configuration, and (ii) to rotate at least one of the two frictional drive components to rotate the wheel of the bicycle.

The present invention relates to a portable motor assembly comprising a case, a control module disposed in the case, a motor wrapped up with a friction wheel for connecting to the case and controlled by the control module for rotation, a fixing base connecting to a bottom of the case and having a clamp for fixing to a seat tube of a bicycle and at least one tension spring for pulling down the fixing base and making the friction wheel surrounding the motor tightly press against a surface of a rear wheel of the bicycle to drive a rear wheel of the bicycle.

A multimodal transportation system includes a module alternately coupleable with a vehicle and a mobility device. The module includes a casing and a motor, a battery, and a controller each supported by the casing. The vehicle and the module each include electrical contacts engageable with each other. The mobility device includes a frame, and the casing and the frame each include a locking element releasably engageable with each other.

A number of variations may include a foldable scooter comprising a first frame component, wherein the first frame component comprises a steering column and a handlebar, wherein the steering column is integrated with an electric drive unit speed controller which is constructed and arranged to operatively control a removeable electric drive module; a second frame component, wherein the second frame component is rotatably attached to the first frame component so that the first frame component can fold onto the second frame component and wherein the second frame component includes a deck; a front wheel operatively connected to the first frame component; and a rear wheel operatively connected to the second frame component.