Resilient tires and wheels – Tires – resilient – Cushion and pneumatic combined
Patent
1993-02-19
1995-07-25
Knable, Geoffrey L.
Resilient tires and wheels
Tires, resilient
Cushion and pneumatic combined
152520, B60C 1706
Patent
active
054353637
ABSTRACT:
A run-flat tire that consists of about eight to twelve free-standing, separate and independent inserts, bonded to the inside of a conventional tubeless tire (30) that is mounted on a conventional one piece drop center wheel (31). The accompanying drawing shows a cross section view of one of these inserts in the tire. Each insert consists of a pair of rigid, load supporting, spread-apart legs (33); a rubber rim pad (34); a pair of rubber foot pads (35) which are bonded to the inside of opposite tire bead flanges.
The rubber rim paid is bonded to the top of the leg pair to permit the legs to swing in and out, which is necessary during mounting and demounting the tire from the wheel. The pair of rubber foot pads are made to permit each leg pair to swing back and forth, independently, as needed, under run-flat driving. This tilting of the inserts automatically compensates for the difference between the rolling circumference of the set of inserts and the rolling circumference of the tire. This sequential tilting action of each insert eliminates sliding friction at the point of contact between the rim pad and the inside of the tire tread. Under run-flat driving, the spread apart leg pair push the pair of tire bead flanges outward against the wheel rim flanges to help keep the tire bead flanges on the wheel rim.
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patent: 4901779 (1990-02-01), Holzer
patent: 5115852 (1992-05-01), De Lorean
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