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US 4,541,643 AGranted
Two wheel skating device
OwnerIvan Pavincicinventor
Life of this patent
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Abstract
The two wheel skating device of the present invention contains two large size wheels with each over four inches in diameter. The wheels are symmetrically arranged on opposite sides of a frame which accommodates a skater's shoe. The wheels are rotationally mounted on axles coaxially extending from opposite sides of a swinging arm which is pivotally connected to the frame. Each wheel is rotationally mounted through a wheel assembly including unidirectional needle bearings for rotation in only one direction.
Claims7
A two wheel skating device comprising:
- a frame adapted to accommodate the foot of a skater;
- a first and second wheel;
- wheel assembly means for rotationally mounting said first and second wheel on opposite sides of said frame, said wheel assembly means including a wheel axle for each wheel, ball bearings mounted on each axle and unidirectional needle bearings for each wheel to permit rotation of said first and second wheel in only one direction;
- and
- suspension means for pivotally coupling each wheel axle to said frame with each suspension means having a suspension pivot axis which is offset from each wheel axle such that each wheel axle is displaced relative to the suspension axis to cause the skate to turn based upon the distribution of the weight of the foot on the frame, said suspension means including a swinging arm for each wheel, with each swinging arm being connected at one end about said wheel axle and pivotally connected at the other end about said suspension axis to said frame.
2 more elements
Dependencies are inferred from the claim text.