Resilient tires and wheels – Tires – resilient – Anti-skid devices
Patent
1980-03-06
1981-09-22
Ball, Michael W.
Resilient tires and wheels
Tires, resilient
Anti-skid devices
152330R, 156128T, 264 37, 264109, 264123, 428402, B60C 1100, B29G 702
Patent
active
042904706
ABSTRACT:
An unpatterned (grooveless) porous tire tread and a pneumatic tire incorporating the porous tread, together with methods of manufacturing the tire tread as a separate item and as an integral part of the tire are described. The tire tread has numerous randomly orientated and randomly distributed interconnected passages extending from the surface substantially throughout the tread. These passages provide water drainage paths preventing build-up of water between the tire tread and a wet road.
The tire tread is preferably manufactured by bonding particulated elastomeric material with a binder mixture that forms a polymer upon curing. Whether formed separately or integrally with a tire, the tread mould is unpatterned.
REFERENCES:
patent: 1896574 (1933-02-01), Covey
patent: 1930585 (1933-10-01), Covey
patent: 2130524 (1938-09-01), Clark
patent: 2672910 (1954-03-01), Corson
patent: 3274322 (1966-09-01), Scudder
patent: 3850875 (1974-11-01), Robson
patent: 3856067 (1974-12-01), Gorter
patent: 3920604 (1975-11-01), Berg et al.
patent: 4176702 (1979-12-01), Seilberling
PCT International Application WO 80/00233.
Williams Arthur R.
Williams Gareth T.
Ball Michael W.
Dunlop Limited
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