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1. US20030136492 - Tire having beads of improved structure

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United States of America
Application Number 10335831
Application Date 02.01.2003
Publication Number 20030136492
Publication Date 24.07.2003
Grant Number 6758252
Grant Date 06.07.2004
Publication Kind B2
IPC
B60C 15/06
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
06Flipper strips, fillers, or chafing strips
B60C 15/00
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
B60C 15/024
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
02Seating or securing beads on rims
024Bead contour, e.g. lips, grooves, or ribs
CPC
B60C 15/0027
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
0009features of the carcass terminal portion
0027with low ply turn-up, i.e. folded around the bead core and terminating at the bead core
B60C 15/024
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
02Seating or securing beads on rims
024Bead contour, e.g. lips, grooves, or ribs
B60C 15/0247
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
02Seating or securing beads on rims
024Bead contour, e.g. lips, grooves, or ribs
0247with reverse bead seat inclination, i.e. the axially inner diameter of the bead seat is bigger than the axially outer diameter thereof
B60C 15/06
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
06Flipper strips, fillers, or chafing strips ; and reinforcing layers for the construction of the bead
B60C 15/0607
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
CVEHICLE TYRES TYRE INFLATION; TYRE CHANGING OR REPAIRING; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
15Tyre beads, e.g. ply turn-up or overlap
06Flipper strips, fillers, or chafing strips ; and reinforcing layers for the construction of the bead
0603characterised by features of the bead filler or apex
0607comprising several parts, e.g. made of different rubbers
Y10T 152/10819
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
152Resilient tires and wheels
10Tires, resilient
10495Pneumatic tire or inner tube
10819Characterized by the structure of the bead portion of the tire
Applicants Michelin Recherche et Technique, S.A.
Inventors Bordoz, Francis
Patterson, Forrest
Agents Remick, E. Martin
Csontos, Alan A.
Farrell, Martin
Priority Data 0008649 03.07.2000 FR
Title
(EN) Tire having beads of improved structure
front page image
Abstract
(EN)

A tire (1) comprising, viewed in meridian section, two beads (12) with generatrices which are inclined towards the outside, the upturn (130) of said reinforcement (13) being formed by the lateral (30) and radially inner (32) sides of a wedge-shaped profiled element (3) of high Shore A hardness and having an end located firstly axially to the outside of a straight line P2perpendicular to the axis of rotation and passing through the center of gravity of the annular anchoring element (14) and secondly axially to the inside and radially to the outside of the straight line P1passing through said center of gravity and forming with the axis of rotation an angle of between 30° and 60°, and the ratio e1/e2of the thickness e1between the carcass reinforcement upturn (130) and the annular anchoring element (14) to the thickness e2between the carcass reinforcement upturn (130) and the outer wall of the bead, measured on the straight line P1, satisfying the relationship:

0.05≦e1/e2<1.0.
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