A wearable motorized device comprising a shoe bracket, which has a ring-shaped structure and can be fastened to the middle part of a shoe; a wheel, which rotatably supports the shoe bracket to enable lateral skating and longitudinal walking; a driving motor, which rotationally drives the wheel; and a battery pack, which powers the driving motor. The wheels are not coaxially installed on the two sides of the shoe bracket to drive the wearer's longitudinal skating, but are installed on the ring-shaped shoe bracket, which can be fastened to the middle part of the shoe, to support the wearer's lateral skating and longitudinal walking. This way, the wearer can position his/her legs apart during skating; such that the skating stability is improved. Moreover, its general contour does not significantly exceed the contour of the shoe in the longitudinal direction, thus it will not strain the wearer when ascending or descending stairs. Therefore, a wearable motorized device with high skating stability and ease of use can be achieved.

A wearable motorized device comprising a shoe bracket, which has a ring-shaped structure and can be fastened to the middle part of a shoe; a wheel, which rotatably supports the shoe bracket to enable lateral skating and longitudinal walking; a driving motor, which rotationally drives the wheel; and a battery pack, which powers the driving motor. The wheels are not coaxially installed on the two sides of the shoe bracket to drive the wearer's longitudinal skating, but are installed on the ring-shaped shoe bracket, which can be fastened to the middle part of the shoe, to support the wearer's lateral skating and longitudinal walking. This way, the wearer can position his/her legs apart during skating; such that the skating stability is improved. Moreover, its general contour does not significantly exceed the contour of the shoe in the longitudinal direction, thus it will not strain the wearer when ascending or descending stairs. Therefore, a wearable motorized device with high skating stability and ease of use can be achieved.

A wind paddle sail assembly includes a sail having stiffened upper and lower ends and a paddle or pole having an upper fixed end and a lower portion with a lower free end. A fastener fastens the upper fixed end of the paddle or pole to the upper end of the sail. A downhaul strap fastens the lower end of the sail to the lower portion of the paddle or pole for adjusting tension in the sail. A method for operating a wind paddle sail assembly is also provided.

A wind paddle sail assembly includes a sail having stiffened upper and lower ends and a paddle or pole having an upper fixed end and a lower portion with a lower free end. A fastener fastens the upper fixed end of the paddle or pole to the upper end of the sail. A downhaul strap fastens the lower end of the sail to the lower portion of the paddle or pole for adjusting tension in the sail. A method for operating a wind paddle sail assembly is also provided.

An adjustment mechanism for an electric power-driven shoe, the mechanism comprising a shoe sole (1) is presented, wherein a plurality of rolling wheels (2) are arranged below the shoe sole (1); a foot-positioning mechanism is arranged above the shoe sole (1) and is provided with an angle-adjusting mechanism for adjusting an angle between the foot-positioning mechanism and a lengthwise direction of the shoe sole (1).

An adjustment mechanism for an electric power-driven shoe, the mechanism comprising a shoe sole (1) is presented, wherein a plurality of rolling wheels (2) are arranged below the shoe sole (1); a foot-positioning mechanism is arranged above the shoe sole (1) and is provided with an angle-adjusting mechanism for adjusting an angle between the foot-positioning mechanism and a lengthwise direction of the shoe sole (1).

A rotation powered vehicle drive mechanism includes an elongated chassis slot disposed within a respective lateral exterior portion of a chassis assembly. An elongated platform slot is disposed within a respective lateral portion of a platform assembly, and is configured such that it is substantially opposed to the chassis slot. The platform assembly is pivotally secured to the chassis assembly thereby allowing for rotation through a platform rotation angle of the platform assembly with respect to the chassis assembly about a rotation axis. The rotation of the platform assembly results in an increase or decrease of a variable slot height which is measured between the chassis slot and the platform slot. A cart assembly is disposed between the chassis assembly and the platform assembly, and is operatively coupled to the chassis slot and to the platform slot. The cart assembly has a cart height and is constrained by the chassis slot and the platform slot to a position on the chassis assembly wherein the cart height is substantially equivalent to the variable slot height. In this manner the cart assembly is configured to translate along the chassis assembly upon rotation of the platform assembly with respect to the chassis assembly. A helical drive shaft is rotationally secured within the chassis assembly and operatively coupled to the cart assembly such that translation of the cart assembly results in rotational motion of the helical drive shaft. A truck assembly is pivotally secured to the chassis assembly. The truck assembly includes an axle rotationally secured to the truck assembly and operatively coupled to a plurality of wheels. The axle is operatively coupled to the helical drive shaft such that rotation of the platform assembly with respect to the chassis assembly in a first angular direction results in rotation of the axle and respective wheels in the first angular direction.

A rotation powered vehicle drive mechanism includes an elongated chassis slot disposed within a respective lateral exterior portion of a chassis assembly. An elongated platform slot is disposed within a respective lateral portion of a platform assembly, and is configured such that it is substantially opposed to the chassis slot. The platform assembly is pivotally secured to the chassis assembly thereby allowing for rotation through a platform rotation angle of the platform assembly with respect to the chassis assembly about a rotation axis. The rotation of the platform assembly results in an increase or decrease of a variable slot height which is measured between the chassis slot and the platform slot. A cart assembly is disposed between the chassis assembly and the platform assembly, and is operatively coupled to the chassis slot and to the platform slot. The cart assembly has a cart height and is constrained by the chassis slot and the platform slot to a position on the chassis assembly wherein the cart height is substantially equivalent to the variable slot height. In this manner the cart assembly is configured to translate along the chassis assembly upon rotation of the platform assembly with respect to the chassis assembly. A helical drive shaft is rotationally secured within the chassis assembly and operatively coupled to the cart assembly such that translation of the cart assembly results in rotational motion of the helical drive shaft. A truck assembly is pivotally secured to the chassis assembly. The truck assembly includes an axle rotationally secured to the truck assembly and operatively coupled to a plurality of wheels. The axle is operatively coupled to the helical drive shaft such that rotation of the platform assembly with respect to the chassis assembly in a first angular direction results in rotation of the axle and respective wheels in the first angular direction.

A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.