B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
152/76
B60C 5/00 (2006.01)
Patent
CA 2013777
ABSTRACT OF PATENT REMOVABLE FRICTION REDUCING TREAD FOR ALL TERRAIN BICYCLE TIRES The tires of an all terrain bicycle (ATB) are converted from being wide, soft and covered with knobs as required for traction in dirt tires which are narrow, hard and smooth so as to greatly reduce the ATBs rolling friction over pavement. Installing this invention when appropriate allows the ATB to efficiently serve both for recreational purposes and commuting purposes. The invention takes the form of a removable hoop who's inside diameter is slightly smaller than the outside diameter of a standard ATB tire. It is attached to the ATB tire utilizing friction resulting from de-flating the ATB tire, forcing the tread hoop onto its center and then re-inflating the tire. The hoop itself is composed of two elements. The first is an inner band made of steel, carbon fiber or other material having high rigidity and tensile strength. This band provides tensile strength in the hoop, distributes the load from the hoop onto multiple knobs on the ATB tire and also keeps the hoop circular despite the widely spaced knobs supporting it. The second component of the rubber hoop is the rubber itself which forms the low friction tread and inside of which the tensile band is encased. The rubber component is roughly semi- circular in cross section and has the tensile band cast within it near its slightly concave inner side. The convex outer surface of the rubber component has a shallow road racing tread pattern cast into it.
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