Pneumatic Tire

Patent metadata

Field	Value
Publication number	US-2017166016-A1
Application number	US-201515328000-A
Country	US
Kind code	A1
Filing date	Jul 22, 2015
Priority date	Jul 23, 2014
Publication date	Jun 15, 2017
Grant date	—

Abstract

A pneumatic tire includes a fastener disposed on a tire inner surface, the fastener being a first fastener of a separatable pair of mechanical fasteners and being composed of at least two fastener members. The at least two fastener members sandwich a rubber-coated fiber reinforced member and fix together. The fastener is disposed at a position such that a distance (D) in a tire width direction from a center position (C) of the fastener to a tire equator line (L) and a maximum width (W) of the tire satisfy a following relationship: 0≦D/W≦0.40. The fiber reinforced member includes a plurality of fiber bundles disposed in alignment in at least one direction, a number of fiber bundles Y (bundles/50 mm width) per unit width of the fiber reinforced member being such that: 20≦Y (bundles/50 mm width)≦90.

First claim

1 . A pneumatic tire, comprising:
a mechanical fastener disposed on a tire inner surface, the mechanical fastener being a first mechanical fastener of a separatable pair of mechanical fasteners and being composed of at least two fastener members; wherein a) the at least two fastener members sandwich a rubber-coated fiber reinforced member and fix together; b) the mechanical fastener is disposed at a position such that a distance D (mm) in a tire width direction from a center position C of the mechanical fastener to a tire equator line L and a maximum width W (mm) of the tire satisfy a following relationship:
0≦ D/W≦ 0.40; and

c) the fiber reinforced member includes a plurality of fiber bundles disposed in alignment in at least one direction, a number of fiber bundles Y (bundles/50 mm width) per unit width of the fiber reinforced member being such that:
20≦ Y (bundles/50 mm width)≦90.

2 . The pneumatic tire according to claim 1 , wherein the fiber reinforced member is composed of fiber bundles with a fiber total cross-sectional area A (mm 2 /fiber bundle) per one fiber bundle such that:
0.05≦ A (mm 2 /fiber bundle)≦1.20.

3 . The pneumatic tire according to claim 1 , wherein the fiber reinforced member is composed of fiber bundles with a Young's modulus of from 1 GPa to 15 GPa.

4 . The pneumatic tire according to claim 1 , wherein the fiber reinforced member is composed of a plurality of fiber bundles aligned in one direction.

5 . The pneumatic tire according to claim 1 , wherein the fiber reinforced member is composed of a plurality of fiber bundles aligned in at least two directions.

6 . The pneumatic tire according to claim 5 , wherein a plurality of fiber reinforced members composed of a plurality of fiber bundles aligned in one direction are layered with the plurality of fiber bundles having intersecting alignment directions so as to have a configuration in which the fiber bundles are aligned in at least two directions.

7 . The pneumatic tire according to claim 5 , wherein the direction in which the fiber bundles in the fiber reinforced member are aligned forms an angle (minor angle θ) with a tire circumferential direction such that:
15 degrees≦θ≦75 degrees.

8 . The pneumatic tire according to claim 1 , wherein an average length L (mm) of the fiber bundles in the fiber reinforced member that pass through a fastener region where the fastener projects on the tire inner surface is such that:
15≦L (mm)≦200.

9 . The pneumatic tire according to claim 1 , wherein a number of the fiber bundles in the fiber reinforced member that pass through the fastener region where the fastener projects on the tire inner surface is from 4 to 90.

10 . The pneumatic tire according to claim 1 , wherein the fiber reinforced member sandwiched between the at least two fastener members has a contour shape when viewed in a plan view without sharp corner portions, and is composed of a
curved line with a radius of curvature of 5 mm or greater or composed of a combination of a curved line with a radius of curvature of 5 mm or greater and a straight line.

11 . The pneumatic tire according to claim 1 , wherein the contour shape of the fastener which projects on the tire inner surface has a distance R of from 2 mm to 60 mm, where R is a distance from a center of gravity position of the contour shape to a discretionary position on a line of the contour furthest away from the center of gravity position.

12 . The pneumatic tire according to claim 1 , further comprising an object attached to a second fastener that engages with the first fastener on the tire inner surface, wherein the object is fixed on the tire inner surface by engaging the first fastener and the second fastener together.

13 . The pneumatic tire according to claim 12 , wherein the object attached to the second fastener is one or a combination of two or more of (a) an electronic circuit comprising a sensor, (b) a balance weight, (c) a run-flat core, (d) an object on which an oxygen scavenger, a drying agent, and/or an ultraviolet light detecting color fixing agent is applied or mounted, (e) a noise absorbing member, or (f) a surface fastener member.

Assignees

• Yokohama Rubber Co Ltd

Inventors

• Sakamoto Hayato
• Tanno Atsushi

Classifications

• B29D2030/0072

  Attaching fasteners to tyres, e.g. patches, in order to connect devices to tyres · CPC title

• B60C19/001 Primary

  Tyres requiring an asymmetric or a special mounting · CPC title

• B29D30/0681

  Parts of pneumatic tyres; accessories, auxiliary operations · CPC title

• B60C23/0493 Primary

  for attachment on the tyre · CPC title

• B29D30/0061

  Accessories, details or auxiliary operations not otherwise provided for · CPC title