Safety traction device

Details Safety traction device Safety traction device

2005-05-13

2008-11-11

Bellinger, Jason R (Department: 3617)

Resilient tires and wheels

Tires, resilient

Anti-skid devices

C152S226000

Reexamination Certificate

active

07448421

ABSTRACT:
A wheel hub assembly having a rim, an outer cap and an inner body joined to the cap within the rim and carrying automatically extendable and retractable curved traction elements. The traction elements are curved pieces with inner end portions disposed on the inside of the tire when retracted and outer ends substantially concealed in gaps between the rim and the cap when retracted, and extendable into active positions overlying the tread of the tire by electric motors each driving two rack-and-pinion drives through T-drives between two traction elements. Channel-shaped tracks and guide rollers on the hub base support the fraction elements, which have traction-enhancing ribs and studs on their outer end portions. An alternative embodiment has a hollow annular hub body on which the traction elements are mounted and guided, in two circular slots, with the motors inside the annular body, the body being supported on a framework to be bolted to the central hub element of a conventional wheel.

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