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JPS649009A - Pneumatic radial tire - Google Patents

Pneumatic radial tire

Info

Publication number
JPS649009A
JPS649009A JP62166420A JP16642087A JPS649009A JP S649009 A JPS649009 A JP S649009A JP 62166420 A JP62166420 A JP 62166420A JP 16642087 A JP16642087 A JP 16642087A JP S649009 A JPS649009 A JP S649009A
Authority
JP
Japan
Prior art keywords
groove
sipes
groove bottom
depth
bottom part
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.)
Pending
Application number
JP62166420A
Other languages
Japanese (ja)
Inventor
Isao Mitsuyoshi
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.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
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
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP62166420A priority Critical patent/JPS649009A/en
Publication of JPS649009A publication Critical patent/JPS649009A/en
Pending legal-status Critical Current

Links

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  • Tires In General (AREA)

Abstract

PURPOSE:To prevent the generation of a crack on a groove bottom in the captioned tire for a heavy load such as a bus, etc., by extending sipes in a groove direction ranging from nearly the middle part of the groove depth of each side wall of a lateral groove to its groove bottom. CONSTITUTION:Sipes 30 which extend in a groove direction at an equal interval are provided on the side walls 23a of a lateral groove 23 in each part from a position half a groove depth D23 to a groove bottom part 23c. These sipes 30 are continued along a block 28 and perpendicularly cut into side wall faces 23d, and the width W30 of the sipe is made approx, 1.5mm while its depth D30 being made approx. 4mm. Due to such a structure, even if the variation of expanding/contracting the groove width of the lateral groove is repeated due to reaction force from a road surface at the time of rolling, the variation is relieved and absorbed by the sipes and restrained from affecting the groove bottom part, suppressing the generation of a crack on the groove bottom part.
JP62166420A 1987-07-02 1987-07-02 Pneumatic radial tire Pending JPS649009A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62166420A JPS649009A (en) 1987-07-02 1987-07-02 Pneumatic radial tire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62166420A JPS649009A (en) 1987-07-02 1987-07-02 Pneumatic radial tire

Publications (1)

Publication Number Publication Date
JPS649009A true JPS649009A (en) 1989-01-12

Family

ID=15831095

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62166420A Pending JPS649009A (en) 1987-07-02 1987-07-02 Pneumatic radial tire

Country Status (1)

Country Link
JP (1) JPS649009A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316063A (en) * 1991-11-18 1994-05-31 Compagnie Generale Des Establissements Michelin - Michelin & Cie Tread having grooves with incisions in the walls
JP2006218949A (en) * 2005-02-09 2006-08-24 Bridgestone Corp Pneumatic tire
US8973630B2 (en) 2006-11-08 2015-03-10 Bridgestone Americas Tire Operations, Llc Tire including concave recesses in a circumferential tread
US20150258861A1 (en) * 2012-10-25 2015-09-17 Bridgestone Americas Tire Operations, Llc Material Inclusion Tread

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5316063A (en) * 1991-11-18 1994-05-31 Compagnie Generale Des Establissements Michelin - Michelin & Cie Tread having grooves with incisions in the walls
JP2006218949A (en) * 2005-02-09 2006-08-24 Bridgestone Corp Pneumatic tire
US8973630B2 (en) 2006-11-08 2015-03-10 Bridgestone Americas Tire Operations, Llc Tire including concave recesses in a circumferential tread
US20150258861A1 (en) * 2012-10-25 2015-09-17 Bridgestone Americas Tire Operations, Llc Material Inclusion Tread
US10933698B2 (en) * 2012-10-25 2021-03-02 Bridgestone Americas Tire Operations, Llc Material inclusion tread

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