JPS54140303A - Tire for uneven ground - Google Patents
Tire for uneven groundInfo
- Publication number
- JPS54140303A JPS54140303A JP4752678A JP4752678A JPS54140303A JP S54140303 A JPS54140303 A JP S54140303A JP 4752678 A JP4752678 A JP 4752678A JP 4752678 A JP4752678 A JP 4752678A JP S54140303 A JPS54140303 A JP S54140303A
- Authority
- JP
- Japan
- Prior art keywords
- tire
- portions
- projection
- rigidity
- tread
- 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
Links
Landscapes
- Tires In General (AREA)
Abstract
PURPOSE:To improve driving force by obtaining sufficient tire tread pressure on uneven ground, by alternatively forming portions with high rigidity and portions with low rigidity, which indentation quantities in the tire inner diameter direction differ when a tire contacts the earth, in the tire circumferential direction. CONSTITUTION:This tire 20 for uneven ground is provided with a tread pattern shown in the development drawing, and produced by symmetrically disposing a number of projections onto a center line N-N of the tire in a tread portion 20a of the tire 20. The tread portion 20a is equipped with a central projection portion 21 arranged onto the center line N-N, four block-like projection portions 22 - 25 disposed to each vertex of a quadrilateral (a) surrounding the projection portion 21 and projection portions 26, 27 arranged to the outsides of outside projection portions 22 - 25 on a line (b) passing through the central projection portion 21, and formed from portions A, in which the rigidity of the tread portion 20a is made lower than the mean of the whole tire, and portions B, which are provided with lateral long projection portions 28 and projection portions 29 - 32 and which rigidity is made higher.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4752678A JPS54140303A (en) | 1978-04-21 | 1978-04-21 | Tire for uneven ground |
US06/031,434 US4267872A (en) | 1978-04-20 | 1979-04-19 | Vehicle tire with tread having circumferentially varying rigidity |
FR7909881A FR2423355A1 (en) | 1978-04-20 | 1979-04-19 | ADVANCED PNEUMATIC WRAP |
DE19792916162 DE2916162A1 (en) | 1978-04-20 | 1979-04-20 | VEHICLE TIRES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4752678A JPS54140303A (en) | 1978-04-21 | 1978-04-21 | Tire for uneven ground |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54140303A true JPS54140303A (en) | 1979-10-31 |
JPS5724244B2 JPS5724244B2 (en) | 1982-05-22 |
Family
ID=12777557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4752678A Granted JPS54140303A (en) | 1978-04-20 | 1978-04-21 | Tire for uneven ground |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54140303A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59220405A (en) * | 1983-05-28 | 1984-12-11 | Honda Motor Co Ltd | Motorcycle tire |
-
1978
- 1978-04-21 JP JP4752678A patent/JPS54140303A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59220405A (en) * | 1983-05-28 | 1984-12-11 | Honda Motor Co Ltd | Motorcycle tire |
Also Published As
Publication number | Publication date |
---|---|
JPS5724244B2 (en) | 1982-05-22 |
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