Importance

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Abstract

A small utility vehicle, such as a motorized scooter, has an attached vehicle supporting wheel. This wheel includes a solid rubber or plastic tire removeably mounted to a central hub. The tire when mounted to the hub rolls on the ground at a peripheral ground contact surface and defines on opposite sidewall surfaces with the solid mass of the tire there between. Each sidewall surface has periodically spaced grooves. A vehicle attached brake of the compression caliper type having two flat opposing brake shoe surfaces bears on the tire sidewalls to effect braking. During braking, one flat opposing brake shoe surface of the compression caliper bears on one sidewall surface and the remaining flat opposing brake shoe surface of the compression caliper bears on the remaining sidewall surface squeezing the solid mass of the tire there between. When the caliper is closed, friction between each sidewall and flat opposing brake shoe surface effects braking, with the result that the wheel tire serendipitous serves as the brake disc. The grooves at the sidewall surfaces on the wheel tire serve to wipe water and debris from the interface of the sidewall surfaces and compression brake shoe surfaces of the caliper brake to maintain constant friction.

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First Claim