Wheel assembly and wheelchair
First Claim
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1. A wheel assembly capable of forward or reverse motion as well as lateral motion comprising:
- a wheel rotatable on an axle;
a plurality of small rotatable outer wheels positioned laterally on the wheel, wherein said wheel is rotatable in a first plane on the axle and functions as the axle for said small rotatable outer wheels and wherein each small rotatable outer wheel is rotatable on the wheel in a second plane perpendicular to the first plane; and
,a lateral braking system carried by said wheel, said lateral braking system movable from a position contacting said small rotatable outer wheels thereby precluding rotation of said small rotatable outer wheels to a position permitting rotation of said small rotatable outer wheels.
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Abstract
A wheel assembly having multiple small rotatable wheels mounted laterally thereon whereby lateral movement as well as forward and backward movement is provided. A pair of the wheel assemblies are utilized on a hand-propelled wheelchair that can be moved laterally as well as in the standard forward-reverse motion. The wheelchair comprises a frame, one or more axles, a pair of main wheels rotatable on the one or more axles, and a plurality of small rotatable outer wheels positioned laterally on the main wheels.
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Citations
16 Claims
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1. A wheel assembly capable of forward or reverse motion as well as lateral motion comprising:
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a wheel rotatable on an axle; a plurality of small rotatable outer wheels positioned laterally on the wheel, wherein said wheel is rotatable in a first plane on the axle and functions as the axle for said small rotatable outer wheels and wherein each small rotatable outer wheel is rotatable on the wheel in a second plane perpendicular to the first plane; and
,a lateral braking system carried by said wheel, said lateral braking system movable from a position contacting said small rotatable outer wheels thereby precluding rotation of said small rotatable outer wheels to a position permitting rotation of said small rotatable outer wheels. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wheelchair capable of forward-reverse motion as well as lateral motion comprising:
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a frame; one or more axles; a pair of main wheels rotatable in a first plane on one or more axles; a plurality of small rotatable outer wheels positioned laterally on the main wheels, wherein said main wheel functions as the axle for said small rotatable outer wheels and wherein each small rotatable outer wheel is rotatable in a second plane perpendicular to the first plane; and
,a lateral braking system carried by at least one of said main wheels, said lateral braking system movable from a position contacting said small rotatable outer wheels thereby precluding rotation of said small rotatable outer wheels to a position not contacting said small rotatable outer wheels thereby permitting rotation thereof. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification