Resilient tires and wheels – Tires – resilient – Cushion and pneumatic combined
Patent
1980-05-01
1982-03-09
Kittle, John E.
Resilient tires and wheels
Tires, resilient
Cushion and pneumatic combined
152197, 152200, 152330RF, 152340, 152361R, B60C 1700, B60C 500, B60C 900
Patent
active
043184340
ABSTRACT:
Passive, self-energizing means for increasing the load carrying capabilities in the depressurized condition of a banded radial run-flat tire system. In this invention, an inner tube inflated to a pressure of about 3-5 psi is positioned on the wheel rim inside the tire which is inflated to its normal pressure of about 30 psi. Because of this pressure differential, the inner tube is compressed to about one-sixth its volume at ambient pressure and in normal operation it rides out of contact with the inside walls of the tire casing without interaction therewith. If the tire is depressurized because of a puncture or other cause, the release of tire pressure on the inner tube results in the expansion of the tube outwards to maintain the curvature in the sidewalls, which curvature enhances the load capacity of the tire in the depressurized condition.
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patent: 4241775 (1980-12-01), Jackson
Bokan Thomas
Gill Mellor A.
Grumman Aerospace Corporation
Kittle John E.
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