CA2084741A1 - Block pattern tire with optimized groove depth ratios, sipe depth and length ratios - Google Patents

Block pattern tire with optimized groove depth ratios, sipe depth and length ratios

Info

Publication number
CA2084741A1
CA2084741A1 CA 2084741 CA2084741A CA2084741A1 CA 2084741 A1 CA2084741 A1 CA 2084741A1 CA 2084741 CA2084741 CA 2084741 CA 2084741 A CA2084741 A CA 2084741A CA 2084741 A1 CA2084741 A1 CA 2084741A1
Authority
CA
Canada
Prior art keywords
depth
sipe
grooves
ratios
axial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2084741
Other languages
French (fr)
Other versions
CA2084741C (en
Inventor
Kazuki Numata
Kiyoshi Ochiai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Rubber Industries Ltd
Original Assignee
Kazuki Numata
Kiyoshi Ochiai
Sumitomo Rubber Industries, Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP3359471A external-priority patent/JPH05178031A/en
Priority claimed from JP35947291A external-priority patent/JP3145762B2/en
Application filed by Kazuki Numata, Kiyoshi Ochiai, Sumitomo Rubber Industries, Ltd. filed Critical Kazuki Numata
Publication of CA2084741A1 publication Critical patent/CA2084741A1/en
Application granted granted Critical
Publication of CA2084741C publication Critical patent/CA2084741C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/0306—Patterns comprising block rows or discontinuous ribs
    • B60C11/0309—Patterns comprising block rows or discontinuous ribs further characterised by the groove cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/03—Tread patterns
    • B60C11/12—Tread patterns characterised by the use of narrow slits or incisions, e.g. sipes
    • B60C11/1259—Depth of the sipe
    • B60C11/1263—Depth of the sipe different within the same sipe

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)

Abstract

A block pattern tire is provided herein. It comprises a tread portion provided in the central part with a circumferential row of blocks which are divided by two wide main circumferential grooves and axial grooves extending therebetween. The thread portion is provided, in its tread surface, with a plurality of first sipes which are narrower than the circumferential grooves, and axial grooves. The axial grooves are shallower than the circumferential grooves. Each of the axial grooves is provided, in the bottom face thereof, with a second sipe having a width of 0.2 to 1.1 mm, the second sipe extending along the centre line of the axial groove and having ends terminated within the bottom so as to have a length of not less than 0.7 times and less than 1.0 times the axial groove length. The depth of the axial groove is in the range of 0.2 to 0.5 times the depth of the circumferential grooves. The depth of the second sipe is 0.2 to 0.5 times the depth of the circumferential grooves. The total of the depth of the axial groove and the depth of the second sipe is not more than 0.7 times the depth of the circumferential grooves.
CA 2084741 1991-12-26 1992-12-07 Block pattern tire with optimized groove depth ratios, sipe depth and length ratios Expired - Fee Related CA2084741C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP3-359472 1991-12-26
JP3-359471 1991-12-26
JP3359471A JPH05178031A (en) 1991-12-26 1991-12-26 Pneumatic tire
JP35947291A JP3145762B2 (en) 1991-12-26 1991-12-26 Pneumatic tire

Publications (2)

Publication Number Publication Date
CA2084741A1 true CA2084741A1 (en) 1993-06-27
CA2084741C CA2084741C (en) 2003-04-22

Family

ID=26580976

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2084741 Expired - Fee Related CA2084741C (en) 1991-12-26 1992-12-07 Block pattern tire with optimized groove depth ratios, sipe depth and length ratios

Country Status (4)

Country Link
CA (1) CA2084741C (en)
FI (1) FI103334B1 (en)
NO (1) NO177491C (en)
SE (1) SE505583C2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5909756A (en) * 1996-09-16 1999-06-08 Sumitomo Rubber Industries, Ltd. Pneumatic tire including sub-grooves
US6000450A (en) * 1995-11-15 1999-12-14 Sumitomo Rubber Industries, Ltd. Studless tire
US6386253B1 (en) * 1998-06-30 2002-05-14 Sumitomo Rubber Industries, Ltd. Tire including block having continuous ridge and small groove
US6415834B1 (en) * 1997-01-20 2002-07-09 Pirelli Pneumatici S.P.A. Tire having low rolling resistance, in particular for driving wheels of heavy vehicles

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3076553B2 (en) 1998-12-21 2000-08-14 住友ゴム工業株式会社 Heavy duty tire

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6000450A (en) * 1995-11-15 1999-12-14 Sumitomo Rubber Industries, Ltd. Studless tire
US5909756A (en) * 1996-09-16 1999-06-08 Sumitomo Rubber Industries, Ltd. Pneumatic tire including sub-grooves
US6415834B1 (en) * 1997-01-20 2002-07-09 Pirelli Pneumatici S.P.A. Tire having low rolling resistance, in particular for driving wheels of heavy vehicles
US6386253B1 (en) * 1998-06-30 2002-05-14 Sumitomo Rubber Industries, Ltd. Tire including block having continuous ridge and small groove

Also Published As

Publication number Publication date
FI103334B (en) 1999-06-15
CA2084741C (en) 2003-04-22
FI103334B1 (en) 1999-06-15
NO924950L (en) 1993-06-28
NO177491B (en) 1995-06-19
NO177491C (en) 1995-09-27
FI925726A (en) 1993-06-27
FI925726A0 (en) 1992-12-16
SE505583C2 (en) 1997-09-15
NO924950D0 (en) 1992-12-21
SE9203627L (en) 1993-06-27
SE9203627D0 (en) 1992-12-02

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed