Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Pneumatic tire

A technology of pneumatic tires and tires, applied in tire parts, tire tread/tread pattern, transportation and packaging, etc., to achieve high lateral grip and improve rigidity

Active Publication Date: 2011-05-11
SUMITOMO RUBBER IND LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the conventional block pattern, although some improvements have been made in terms of both traction performance and lateral grip performance, there is still room for further improvement.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pneumatic tire
  • Pneumatic tire
  • Pneumatic tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0074] Pneumatic tires having tread portions having the specifications shown in Table 1 were tested, and their performances were compared. Also, for comparison purposes without having Figure 7 The tread portion of the curved block shown, and having the Figure 8 The same test was carried out on the pneumatic tire in which the shown substantially U-shaped blocks were arranged on the tread portion near the tire equator.

[0075] Tire size: 205 / 60R15

[0076] Rim size: 7J×15

[0077] Tread contact width TW: 190mm

[0078] Inner circumferential groove (groove width W1, groove depth) = (9.0mm, 11.5mm)

[0079] The first transverse groove (groove width W2, groove depth) = (8.0mm, 11.5mm)

[0080] Inclined groove (groove width W3, groove depth) = (10.0mm, 11.5mm)

[0081] Second transverse groove (groove width W4, groove depth) = (10.0mm, 11.5mm)

[0082] Connecting groove (groove width W5, groove depth) = (7.3mm, 11.5mm)

[0083] Inner transverse groove (groove width W6, gr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a pneumatic tire, which can achieve both excellent traction performance and high lateral ground adhesion capability in motor rally or field cross driving. A pneumatic tire comprises a tread portion provided with: an inside circumferential groove near the tread edge; 1st axial grooves extending from the inside circumferential groove toward the tire equator; oblique grooves extending from the respective 1st axial grooves to the outside tread edge, while inclining to the opposite direction to the intended tire rotational direction; 2nd axial grooves extending from the inside circumferential groove to the oblique grooves; and connecting grooves extending between the oblique grooved. The tread portion is provided with bent blocks each made up of an axial part and oblique part. The bent point of the bent block is positioned on the inside tread edge side of the tire equator, and the axial distance therebetween is 0.10 to 0.25 times the tread width.

Description

technical field [0001] The present invention relates to a pneumatic tire capable of achieving a high balance between traction performance and lateral grip performance in off-road running such as rally races and dirt trials. Background technique [0002] For example, the pneumatic tires for running on uneven roads used in off-road driving, especially the tires for racing on uneven roads used in rally races, etc., in order to shorten the driving time, it is also used to firmly grasp the uneven road. The traction performance of the road surface to transmit driving force to the road surface and the lateral grip performance for suppressing lateral slippage of the tires during cornering are very important. Therefore, in order to achieve both traction performance and lateral grip performance, various proposals have been made regarding block patterns such as the shape and arrangement of blocks (see, for example, Patent Document 1 below). [0003] Patent Document 1: Japanese Patent ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B60C11/03B60C11/117
CPCB60C11/0304B60C19/001B60C2011/0374
Inventor 中野敬太
Owner SUMITOMO RUBBER IND LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com