Patent ID: 7201386
Filing Date: 2007-04-10
Classification: B29C,B62B

Abstract:
1. A sled comprising: a chassis comprising a top surface, a bottom surface, a front end portion, and a rear end portion; a plurality of roller wheels attached to said chassis and arranged in two rows, each row symmetrical about a central longitudinal axis of said chassis; and a center wheel attached to said chassis and located on said central longitudinal axis and located closer to said front end portion than said plurality of said roller wheels, said center wheel raised with respect to said plurality of said roller wheels so that when said plurality of roller wheels contact a flat surface, said center wheel does not touch the flat surface; said chassis further comprising an injection moldable polypropylene copolymer having an IZOD impact resistance from about 0.1 ft lb/in to about 30.0 ft lb/in.