Global patent index - EP 1047564 A1

EP 1047564 A1 2000-11-02 - RADIAL MEDIUM TRUCK TIRE WITH MULTIFILAMENT TOP BELT

Title (en)

RADIAL MEDIUM TRUCK TIRE WITH MULTIFILAMENT TOP BELT

Title (de)

MITTELGROSSER LASTWAGENRADIALREIFEN MIT MULTIFILAMENT-TOPGURT

Title (fr)

PNEUMATIQUE RADIAL POUR CAMIONS DE TAILLE MOYENNE A CEINTURE SUPERIEURE MULTIFILAMENT

Publication

EP 1047564 A1 (EN)

Application

EP 97948392 A

Priority

US 9721161 W

Abstract (en)

[origin: WO9925571A1] A radial medium radial truck (RMT) tire has belt or breaker plies which are reinforced by organic reinforcement cords or filaments. In the preferred embodiment, organic multifilaments are used in the top belt or breaker plies which have the following characteristics: at least a gauge of 420x2 dTex to about 3300x3 dTex, a tenacity of about 35 cN/Tex to about 200 cN/Tex, an initial modulus of at least 30 g/denier (250 cN/Tex) and a shrinkage of about 0.1-10 %. When an organic polymer reinforcement is used in the top belt or breaker in the belt package of a tire, scrapping of tires during a retreading operation because of corrosion is greatly reduced. In addition, acceptance for retreadability is increased because of reduced top belt or breaker damage, allowing for easier preparation for the retreading. Moreover, the invention relates to an improved construction to reduce defects known as blows.

IPC 1-7 (main, further and additional classification)

B60C 9/20

IPC 8 full level (invention and additional information)

B60C 9/00 (2006.01); B60C 9/20 (2006.01)

CPC (invention and additional information)

B60C 9/0042 (2013.01); B60C 9/2009 (2013.01)

Citation (search report)

See references of WO 9925571A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

WO 9925571 A1 19990527; AU 5447198 A 19990607; EP 1047564 A1 20001102

INPADOC legal status

2002-07-03 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20011214

2001-03-28 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20010213

2000-11-02 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000619

2000-11-02 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR GB