Methods and molds for making a roller skating wheel having curvi

Details Methods and molds for making a roller skating wheel having curvi Methods and molds for making a roller skating wheel having curvi

1994-06-13

1996-07-02

Davis, Robert B.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Coating or impregnating workpiece before molding or shaping...

249 56, 249 64, 249134, 249142, 249155, 249176, 249183, 264161, 264274, 264278, 264313, 425175, B29C 3340, B29C 3350, B29C 3910

Patent

active

055319491

ABSTRACT:
A method and mold for making a wheel of a roller skate including a plurality of circumferentially spaced apart generally axially extending curvilinear paths. A speed skater, traveling a predominately circular course with such wheels properly aligned on such skates, is able to use air moving past the skater to increase skating speed. As air enters the curvilinear paths of the wheel the direction of air flow changes. In this manner, momentum is transferred from the moving air to the spinning wheels, thus increasing the number of revolutions of the wheel and the speed of the skater. The mold may be formed of polyurethane and use flexible fingers to form the curvilinear paths of the wheel.

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