초록 ▼

A skateboard has a row of rollers, with a rear roller of relatively larger diameter for improved ground contact during turning maneuvers. Rollers are pivotally mounted for steer-ability, preferably being mounted on inclined axes for the effecting of turning torque about the axes in desired direction

A skateboard has a row of rollers, with a rear roller of relatively larger diameter for improved ground contact during turning maneuvers. Rollers are pivotally mounted for steer-ability, preferably being mounted on inclined axes for the effecting of turning torque about the axes in desired directions in response to exertion by a person of downward force on selected side portions of the skateboard, whereby improved turning of the rollers in desired directions is provided. A roller may be mounted on a pivotable yoke with the roller mounted on one end portion and a spring retainer on the other, so that upon a roller encountering an obstruction, bump or depression, the roller moves upwardly or downwardly to pivot the retainer against a spring, and impact energy is absorbed. Improved propulsion poles are provided, each pole having a generally transverse handle adapted for improved manual grasping and exertion of downward force against a supporting surface; a deformable pole tip member provides improved engagement with a ground surface in various pole orientations.

대표청구항 ▼

A skateboard comprising: a platform having a longitudinal axis, an upper surface, a lower surface, and a front and rear ends, a frame structure extending downwardly from the platform lower surface, friction brake means carried by said frame structure near the rear end of the platform, and a single r

A skateboard comprising: a platform having a longitudinal axis, an upper surface, a lower surface, and a front and rear ends, a frame structure extending downwardly from the platform lower surface, friction brake means carried by said frame structure near the rear end of the platform, and a single row of rollers supported on said frame structure on said longitudinal axis of the platform, said single row of rollers comprising a rear roller in close proximity to said friction brake means, and a plurality of other rollers spaced along the platform longitudinal axis forwardly of said rear roller, each roller having a deformable ground contact surface, said at least one other roller being of substantially the same diameter, the diameter of said rear roller being appreciably larger than the diameters of said other rollers, whereby the rear roller has larger ground contact area than each other roller, said rear roller being the primary support element for the platform when a person shifts his weight rearwardly to turn the skateboard.