A power steering system for a motorcycle, such as a motorcycle trike. The power steering system includes a piston having a piston rod disposed within a cylinder. A distal end of the piston rod is pivotably coupled to a fork tube of a motorcycle fork. A power source drives the piston rod away from the cylinder and retracts the piston rod within the cylinder. A control switch controls the piston between a neutral position, a first turn position, and a second turn position. The neutral position includes the piston rod partially extended from the cylinder. The first turn position includes the piston rod extending further from the cylinder than the neutral position. The second turn position includes the piston rod retracted further within the cylinder than the neutral position.

A clearance packing assembly for a front fork of a bicycle has a ring set, a packing ring, and a locking ring. The ring seat has an outer threaded surface. The packing ring has an inner side surface engaging with the outer threaded surface of the screwing portion via an inner thread. The locking ring has an inner side surface engaging with the outer threaded surface of the screwing portion via an inner thread. By turning the locking ring to move toward the packing ring, the locking ring abuts against the packing ring. The clearance packing assembly is independent from a handlebar stem, a fork stem of the front fork and a head tube of a bicycle frame and can be widely used on different handlebar stems, so to adjust clearance between the head tube and the handlebar stem.

To provide a moving device that can be used as a mobility device to transport objects and can be improved in portability. The moving device that is movable with rotation of wheels includes a body unit inflated by injection of fluid and deflated by discharge of the fluid, a support body provided on a predetermined surface of the body unit, and the wheels provided in the support body, wherein the interior of a predetermined portion of the body unit that receives a load from an object contacting the body unit is formed with a drop-stitch structure, and the drop-stitch structure after injection of the fluid has tensile forces in directions approximately perpendicular to the direction of the load applied to the predetermined portion by the object.

A three-dimensional folding frame is disclosed including a first pivot portion for providing a front folding wheel frame with movable folding; a second pivot portion for providing a rear folding wheel frame with movable folding; a third pivot portion for providing a handlebar vertical rod with rotatable folding; and a fourth pivot portion for providing a crossbar with rotatable folding. The crossbar includes a first folding arm and a second folding arm; the first folding arm is movably connected to the front folding wheel frame by means of the first pivot portion; the front folding wheel frame rotates about the first pivot portion and can move relative to the first folding arm; the second folding arm is movably connected to the rear folding wheel frame by means of the second pivot portion.

A steering mechanism for a vehicle, said vehicle comprising a cargo hold chassis (10), communicably coupled with a front wheel (10a) located on a front axle; and a rider and pillion support chassis (20), communicably coupled with a rear wheel (12a) located on a rear axle; wherein, said cargo hold chassis (10) is located operatively forward and operatively lower with respect to said rider support chassis (20); said mechanism comprising: a steering mechanism comprising a steering stem (30), a steering column rod (36), and a steering handle (32), said steering stem (30) mounted in an operative front of said cargo hold chassis (10), said steering handle (32) mounted operatively atop said cargo hold chassis (10); said steering column rod (36) mounted operatively connected to said steering stem (30) at its upper end, said steering stem (30) spaced apart from said steering handle (32) in order to provide for off-centre steering.

A steering mechanism for a vehicle, said vehicle comprising a cargo hold chassis (10), communicably coupled with a front wheel (10a) located on a front axle; and a rider and pillion support chassis (20), communicably coupled with a rear wheel (12a) located on a rear axle; wherein, said cargo hold chassis (10) is located operatively forward and operatively lower with respect to said rider support chassis (20); said mechanism comprising: a steering mechanism comprising a steering stem (30), a steering column rod (36), and a steering handle (32), said steering stem (30) mounted in an operative front of said cargo hold chassis (10), said steering handle (32) mounted operatively atop said cargo hold chassis (10); said steering column rod (36) mounted operatively connected to said steering stem (30) at its upper end, said steering stem (30) spaced apart from said steering handle (32) in order to provide for off-centre steering.

A steering linkage assembly that allows an offset between a steering axis and a headtube axis of a bicycle. In turn, rider cockpit dimensions are divorced from vehicle performance aspects such that vehicle performance aspects may be tailored regardless of rider size. The steering linkage assembly generally includes linkage members on an opposite side of a linkage chassis than handlebars of the bicycle to improve performance by increasing steering angle range allowed by the linkage. In addition, different linkage members and linkage chasses may be provided to accommodate different offsets between the steering axis and the headtube axis.

A steering linkage assembly that allows an offset between a steering axis and a headtube axis of a bicycle. In turn, rider cockpit dimensions are divorced from vehicle performance aspects such that vehicle performance aspects may be tailored regardless of rider size. The steering linkage assembly generally includes linkage members on an opposite side of a linkage chassis than handlebars of the bicycle to improve performance by increasing steering angle range allowed by the linkage. In addition, different linkage members and linkage chasses may be provided to accommodate different offsets between the steering axis and the headtube axis.

A cargo-carrying wheeled vehicle comprising: at least a cargo hold chassis (10); at least a battery support chassis (30) configured to be operatively behind or operatively ahead or operatively underneath said cargo hold chassis (10); and at least a rider and pillion support chassis (20) configured to be operatively behind said battery support chassis (30) and operatively behind said cargo hold chassis (10), in that, said cargo hold chassis (10), said battery support chassis (30), and said rider and pillion support chassis (20) cooperate to maintain centre of gravity of said vehicle, after addition of cargo and rider and pillion, relatively lower (closer to ground) and substantially on or very near to the centerline of the wheelbase of this vehicle (between 10a and 12a).

A cargo-carrying wheeled vehicle, said vehicle comprising: at least a cargo hold chassis (10); at least a rider support chassis (20) configured to be operatively behind said cargo hold chassis (10), in that, said cargo hold chassis (10) and said rider support chassis (20) cooperate to maintain centre of gravity of said vehicle, after addition of cargo to said cargo hold chassis (10) and after addition of rider to said rider support chassis (20), to obtain a naturally balanced position for said vehicle in a loaded as well as an unloaded condition,