Roller skating spark generator
OwnerDavid Bergsteininventor
Life of this patent
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Abstract
A spark-generating mechanism for mounting on, and for use in combination with, a roller skate or roller skateboard. The mechanism includes a support bracket adapted to be attached to the skating device, to carry rotatably a grindstone wheel between two larger actuating wheels and to hold a spark producing element in resilient contact with the grindstone wheel. Positioned to be inoperative during normal skating, the spark-generating mechanism may be actuated at will by the skater's slightly backward tilting of the roller skating device while in motion.
Claims4
In combination with a conventional roller skating device having a screw in its wheel support structure, a spark-generating mechanism which comprises:
- an axle;
- a grindstone wheel, centrally and fixedly mounted on said axle;
- a pair of actuating wheels of a diameter larger than the diameter of said grindstone wheel, said actuating wheels being fixedly mounted on said axle on either side of said grindstone wheel;
- a spark-producing element held resiliently in contact with the peripheral end surface of said grindstone wheel;
- and
- bracket support means for journalling the ends of said axle for free rotation, for holding said spark-producing element against said grindstone wheel, and for attaching the entire spark-generating mechanism with the screw of the wheel support structure of the roller skating device.
Dependencies are inferred from the claim text.