The Goodyear & Tire Rubber Company

Michael Christopher Kulton

Robert Allen Losey

Thulasiram Gobinath

Mark Anthony Canankamp

John Patrick Roman

Ching-Chih Lee

Kelly Sue King

Michael David Kachner

Judy Ann Birt

David Louis Winter

Randall Raymond Brayer, Sr

Paul Bryson Allen

Joseph Kevin Hubbell

James Oral Hunt

Thomas Charles Lippello, Iii

Graham Alexander Carney

Timothy Lee Fry

Shannon Joseph Hughes

Charles Joseph Ashton

Daniel Patrick Curtis

Scott Kenneth Junod

Randall Raymond Brayer Sr

A pneumatic tire has a carcass structure extending through a pair of opposing bead portions and an inner liner located inward of the carcass structure, each bead portion comprising a bead core about which is wrapped the carcass structure and a toeguard. Each bead portion has a bead toe, a bead base, and a bead heel, the bead base extending between the bead toe and the bead heel. The bead heel has a profile corresponding to a sector of an ellipse or approximates a sector of an ellipse by having a dual radius structure. The bead base may have a dual taper configuration. The bead core may be substantially centered in the bead portion, as determined by the material thickness at three locations about the bead core.

Tire bead geometry

A wrap-around toeguardfor a pneumatic tirehas a carcass plyor plieswith a locked tie-in construction. Each wrap-around toeguardis a non cord reinforced elastomeric unitary strip wound 360.degree. in a singular annular bead. The wrap-around toeguard cord reinforced unitary stripcan be formed of a single elastomeric composition having a shore hardness D of greater than 40. Alternatively the wrap-around toeguard may additionally include an apex portionand a chafer portionalong with the toeguard portion, each portionbeing co-extruded or otherwise hot formed and shaped with the toeguard portionto form the unitary stripand can have distinct elastomeric composition relative to the toeguard portion

Wrap-around toeguard for a pneumatic tire

Tire

A pneumatic tirehas a carcass plyor plieswith a locked tie-in construction and a wrap-around toeguardEach wrap-around toeguardis a non cord reinforced elastomeric unitary strip wound 360 degree in a singular annular bead. The wrap-around toeguard cord reinforced unitary stripcan be formed of a single elastomeric composition having a shore hardness D of greater than 40. Alternatively the wrap-around toeguard may additionally include an apex portionand a chafer portionalong with the toeguard portion, each portionbeing co-extruded or otherwise hot formed and shaped with the toeguard portionto form the unitary stripand can have distinct elastomeric composition relative to the toeguard portion

Locked bead pneumatic tire with wrap-around toeguard

Tire tread

Growing community of inventors

Wadsworth, OH, United States of America

Michael Christopher Kulton