Tire mold and pneumatic tire
AssigneeBridgestone Corporation
InventorTakahiro Uchida
Life of this patent
Estimating the term…
Abstract
Provided are: a tire mold including a bead portion molding surface for molding the bead portion of the tire, the bead portion molding surface having a ridge molding part including a recessed groove extending in the mold radial direction, the ridge molding part being formed in a flange contact portion molding region for molding a rim-flange contact portion of the tire; and a pneumatic tire, in which a bead filler has the tire radial direction outer end positioned more inward in the tire radial direction relative to the rim line position, and a ridge forming portion including a ridge extending in the tire radial direction is formed on the outer surface of the bead portion, the ridge forming portion being positioned in the rim flange contact portion.
Claims12
A tire mold, comprising a bead portion molding surface for molding a bead portion of a tire, wherein:
- the bead portion molding surface has a ridge molding part including a recessed groove extending in the mold radial direction;
- and
- the ridge molding part is formed in a flange contact portion molding region on the bead portion molding surface, the flange contact portion molding region being configured to mold a rim-flange contact portion lying between a bead heel and a rim line position of the tire.
A pneumatic tire, comprising:
- a bead core embedded in a bead portion;
- and a bead filler disposed on the tire radial direction outside of the bead core, wherein:
- the bead filler has a tire radial direction outer end positioned more inward in the tire radial direction relative to the tire width direction line that passes through the rim line position to extend along the tire width direction, when viewed in section in the tire width direction of the tire which has been assembled to an applicable rim and filled with a predetermined internal pressure with no load applied thereon;
- the bead portion has a ridge forming portion formed on an outer surface thereof, the ridge forming portion including a ridge extending in the tire radial direction;
- the ridge forming portion is positioned in a rim-flange contact portion lying between a bead heel and the rim line position.
Dependencies are inferred from the claim text.