Global Patent Index - EP 1021305 A1

EP 1021305 A1 2000-07-26 - ASYMMETRIC DIRECTIONAL PNEUMATIC AGRICULTURAL TIRE

Title (en)

ASYMMETRIC DIRECTIONAL PNEUMATIC AGRICULTURAL TIRE

Title (de)

UNSYMMETRISCHER RICHTUNGVERBUNDENER LANDWIRTSCHAFTSREIFEN

Title (fr)

PNEU TRACTEUR DIRECTIONNEL ASYMETRIQUE

Publication

EP 1021305 A1 (EN)

Application

EP 97921394 A

Priority

US 9707008 W

Abstract (en)

[origin: WO9849021A1] A pneumatic agricultural tire (20) has an asymmetric directional tread (32) with lugs (50A, 50B, 50C) arranged in a chevron type pattern (70, 72). The chevron pattern (70, 72) is asymmetric having the apex or point (74) lying entirely on one-half (32A or 32B) of the tread (32) thus creating soil discharge channels (80, 82) that are greater on one tread half (32A or 32B) relative to the other tread half (32A or 32B). This tread pattern permits the employment of lugs (50A, 50B) of substantially equal lug length l>1< insuring more uniform wear characteristics.

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

B60C 11/03

IPC 8 full level (invention and additional information)

B60C 11/11 (2006.01); B60C 11/03 (2006.01)

CPC (invention and additional information)

B60C 11/0304 (2013.01); B60C 11/0311 (2013.01); B60C 2011/0313 (2013.01)

Citation (search report)

See references of WO 9849021A1

Designated contracting state (EPC)

DE FR IT

EPO simple patent family

WO 9849021 A1 19981105; AU 2743997 A 19981124; CA 2285006 A1 19981105; EP 1021305 A1 20000726; ID 20216 A 19981029; JP 2001522333 A 20011113

INPADOC legal status


2001-02-21 [18W] WITHDRAWN

- Ref Legal Event Code: 18W

- Date of withdrawal: 20001219

2000-07-26 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991028

2000-07-26 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE FR IT