Pneumatic tire and wheel rim assemblies

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United States of America Patent

PATENT NO 4747440
SERIAL NO

06487134

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Abstract

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A pneumatic tire and wheel rim assembly of the type in which the wheel rim has retention means engageable with at least one tire bead to retain the tire bead at its bead seat under the action of road generated forces tending to dislodge tire bead wherein bead retention is improved by providing said at least tire bead with a bead reinforcement which has substantial resistance to deformation in an axial direction yet retains sufficient flexibility to a radial direction normal thereto to allow tire fitting to a one-piece rim. Suitable bead reinforcements are those having an axial rigidity factor `K` greater than 8.5 N.m.sup.2.

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Patent Owner(s)

Patent OwnerAddress
BTR INDUSTRIES LIMITEDBTR HOUSE CARLISLE PALCE LONDON SW1P 1BX

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Holmes, Thomas Birmingham, GB2 8 97
Udall, William S Birmingham, GB2 4 26

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