The Goodyear & Tire Rubber Company

Anthony Curtis Paonessa

Mark Henry Seloover

John Janes Beck, Jr

Thomas Reed Oare

Joseph Ghana Dancy

Walter Dale Allen

Steven Craig Roweder

A runflat pneumatic tire has a tread stiffening member radially inward of the tread . The tire has a deflected section height H under load at 30 psi inflation and a deflected section height H at 0 psi wherein the deflection D are equal to or less than D &minus;D and the net contact area at 0 psi has a perimeter dynamic contact shape of at least U shaped or rectangular.

Runflat tire with tread stiffening member

A pneumatic tire (10) has a pair of sidewall portions (20), a pair of bead regions (22) and a carcass (30) reinforced with at least two sidewall fillers or inserts (42), (46) for each sidewall portion and at least one cord reinforced ply (38) and two bead cores (26) one in each bead region and a reinforcing belt structure (36). This tire is preferably a runflat radial ply tire. The at least one cord reinforced ply (38) has a pair of turnup ends (32) wrapped around the pair of bead cores (26). The turnup ends (32) each extend radially outwardly to a terminal end (33) at a radial height of at least 40% of the tire section height (SH). The first insert for each sidewall portion lies radially inward and adjacent the at least one ply (38). The second insert (46) for each sidewall portion is a bead filler insert radially above the bead core (26) and between the at least one ply (38) and its turnup end (32).

Tire with bead filler runflat inserts

A pneumatic tire 10 has a pair of sidewall portions 20, a pair of bead regions 22 and a carcass 30 reinforced with at least two sidewall fillers or inserts 42, 46 for each sidewall portion and at least one cord reinforced ply 38 and two bead cores 26 one in each bead region and a reinforcing belt structure 36. This tire is preferably a runflat radial ply tire. The at least one cord reinforced ply 38 has a pair of turnup ends 32 wrapped around the pair of bead cores 26. The turnup ends 32 each extend radially outwardly to a terminal end 33 located under the reinforcing belt structure 36. The first insert 42 for each sidewall portion lies radially inward and adjacent the at least one ply 38. The second insert 46 for each sidewall portion is radially between the at least one ply 38 and its turnup end 32.

Growing community of inventors

Akron, OH, United States of America

Anthony Curtis Paonessa