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US 4,094,372 AGranted
Motorized skateboard with uni-directional rear mounting
OwnerMichael A. Notterinventor
Life of this patent
Estimating the term…
Abstract
A skateboard comprises a rider's platform having pairs of front and rear wheels mounted thereunder. Front wheels are mounted for limited universal movement relative to the platform whereas the rear wheels are mounted under the platform solely for vertical pivot movements about a pivot axis disposed in a vertically disposed plane which intersects the longitudinal axis of the skateboard. A bracket is attached to the rear wheel mounting and has a motor secured thereon for selectively driving only one of the rear wheels via a stepped-down drive train and a centrifugally actuated clutch. A normally open kill-switch is mounted on a throttle control adapted to be grasped by a rider whereby a magneto of the engine may be grounded to stop the engine when desired.
Claims16
A skateboard comprising
- a horizontally disposed rider's platform,
- a pair of laterally spaced front wheels connected beneath a forward end of said platform,
- a pair of rear wheels,
- mounting means connecting said rear wheels beneath a rearward end of said platform for solely permitting vertical pivotal movements of said rear wheels about a pivot axis disposed in a vertically disposed plane intersecting a longitudinal axis of said skateboard, said mounting means comprising a bracket assembly pivotally mounted beneath the rearward end of said platform and having said rear wheels rotatably mounted thereon and wherein said bracket assembly extends rearwardly from said rear wheels,
- motor means, having an output shaft, mounted rearwardly on said bracket assembly and
- drive means connecting the output shaft of said motor means with only one of said rear wheels for selectively driving the same comprising a first sprocket secured to the output shaft of said motor means, a countershaft rotatably mounted on said bracket assembly, a second sprocket secured to a first end of said countershaft, an endless first chain entrained about said first and second sprockets, a third sprocket secured to a second end of said countershaft, a fourth sprocket connectible with said one rear wheel and an endless second chain entrained about said third and fourth sprockets.
3 more elements
A skatebaord comprising
- a horizontally disposed rider's platform,
- a pair of laterally spaced front wheels connected beneath a forward end of said platform,
- a pair of rear wheels,
- mounting means connecting said rear wheels beneath a rearward end of said platform for solely permitting vertical pivotal movements of said rear wheels about a pivot axis disposed in a vertically disposed plane intersecting a longitudinal axis of said skateboard comprising a pin pivotally mounted on a mounting bracket secured beneath said platform and wherein the pivot axis for said rear wheels is defined by said pin and a bracket assembly disposed beneath said platform and mounted on said pin and wherein said rear wheels are rotatably mounted on said bracket assembly, said bracket assembly comprising a pair of longitudinally spaced first and second support brackets mounted on opposite ends of said pin and wherein said pin constitutes a bolt having a nut threadably mounted on one end thereof and disposed exteriorly of said first support bracket and elastomeric grommet means mounted on a second end of said bolt and disposed and compressed between said second support bracket and said mounting bracket, and
- adjustment means for selectively adjusting the longitudinal disposition of said first support bracket relative to said second support bracket on said bracket assembly.
2 more elements
A skateboard comprising
- a horizontally disposed rider's platform,
- a pair of laterally spaced front wheels connected beneath a forward end of said platform,
- a pair of rear wheels,
- a bracket assembly mounted beneath the rearward end of said platform and having said rear wheels rotatably mounted thereon and wherein said bracket assembly extends rearwardly from said rear wheels,
- motor means, having an output shaft, mounted rearwardly on said bracket assembly, and
- drive means connecting the output shaft of said motor means with one of said rear wheels for selectively driving the same comprising a first sprocket secured to the output shaft of said motor means, a countershaft rotatably mounted on said bracket assembly, a second sprocket secured to a first end of said countershaft, an endless first chain entrained about said first and second sprockets, a third socket secured to a second end of said countershaft, a fourth sprocket connectible with said one rear wheel and an endless second chain entrained about said third and fourth sprockets.
3 more elements
Dependencies are inferred from the claim text.