US 2010/0300594 A1Published application

Pneumatic tire

OwnerTomoyuki MUKAIinventor

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Abstract

A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, and a carcass extending between the bead portions through the tread portion and sidewall portions. The outer surface of the tire is provided in its region radially inside a maximum width position of the carcass with vent lines extending in a tire circumferential direction, wherein the vent lines include a radially inner first vent line and a radially outer second vent line. The area between the first vent line and second vent line is formed as a serrated area comprising a plurality of circumferentially spaced small ribs extending from the first vent line to the second vent line. The serrated area has deepest parts and shallowest parts. The shallowest parts are located inside the ridge of each of the vent lines, and the deepest parts are located at the same level as or outside a virtual tire outer surface. The virtual tire outer surface is defined as smoothly connecting a tire outer surface immediately radially inside the radially inner first vent line and a tire outer surface immediately radially outside the radially outer second vent line.

Claims12

Dependent claims

A pneumatic tire comprising

a tread portion,
a pair of sidewall portions,
a pair of bead portions,
a carcass extending between the bead portions through the tread portion and sidewall portions,
an outer surface of the tire provided in its region radially inside a maximum width position (m) of the carcass with vent lines (9) extending in a tire circumferential direction, wherein the vent lines (9) include a radially inner first vent line (9A) and a radially outer second vent line (9B),
a serrated area (11) provided between the first vent line (9A) and second vent line (9B), wherein the serrated area (11) comprises a plurality of circumferentially spaced small ribs (10), and the ribs (10) extend from the first vent line (9A) to the second vent line (9B),
the serrated area (11) has deepest parts (11u) and shallowest parts (11h), wherein
the shallowest parts (11h) are located inside the ridge (9h) of each of the vent lines (9A and 9B), and
the deepest parts (11u) are located at the same level as or outside a virtual tire outer surface (3g), the virtual tire outer surface (3g) defined as smoothly connecting a tire outer surface immediately radially inside the radially inner first vent line (9A) and a tire outer surface immediately radially outside the radially outer second vent line (9B).

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/720,041Filed 9 Mar 2010
Priority: JP 2009-12808227 May 2009
Published: 2 Dec 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

B60C 13/001
Tyre sidewalls; Protecting, decorating, marking, or the like, thereof: decorating, marking or the like
B60C 13/02
Tyre sidewalls; Protecting, decorating, marking, or the like, thereof: arrangement of grooves or ribs
B60C 2019/008
Tyre parts or constructions not otherwise provided for: venting means, e.g. for expelling entrapped air
B60C
Vehicle tyres

Family

No related US applications are recorded in the indexed filing history.

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