The Goodyear & Tire Rubber Company

Mark Henry Seloover

John Janes Beck, Jr

Anthony Curtis Paonessa

Michael Joseph Weber

Thomas Reed Oare

Christine Ann Demagall

Joseph Ghana Dancy

Eric John Marazzi

Joseph Kevin Hubbell

John J Verthe

Walter Dale Allen

Raymond Robert DiRossi

Jerold Robert Buenger

Gregory M Holtzapple

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

Tire tread

A pneumatic tire, which may be used as a control tire for calibrating tire testing equipment, comprises a pair of annular beads (,), at least one carcass ply (,) wrapped around the beads, belt reinforcement (,) disposed over the at least one carcass ply in a crown area of the tire, a tread (,) disposed over the belt reinforcement, and sidewalls (,) disposed between the tread (,) and the beads (,), The tire is made with a tread (,) having no grooves or sipes, and which comprises a radial medium truck tire retreading compound. The belt reinforcement (,) is laid up in the circumference of the tire with a low angle, i.e. less than 0.75&deg; with respect to the EP of the tire in the second belt (,), and less than 0.5&deg; with respect to the EP of the tire in the first belt (,).

Unique radial passenger tire construction for RAT/RLF

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

Tire thread

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.

Tire with carcass turn up ends under belt structure

A pneumatic tire with a tread comprising a blend of 3,4-polyisoprene rubber, cis 1,4-polybutadiene rubber, and a terpolymer of styrene/isoprene/butadiene. The triblend of the three basic elastomers when compounded and cured into a polymer network gives a high tan delta at 0.degree. C. associated with good wet traction and a low tan delta at 60.degree. C. which has been associated with low rolling resistance.

Rubber blend and tire with tread thereof

Growing community of inventors

Clinton, OH, United States of America

Mark Henry Seloover