Claims
- 1. A tread configuration for motor vehicle tires, especially spare tires having multiple peripheral rows of essentially V-shaped blocks, each block of which has a point and two ends, with the points of successive blocks in a given row, as seen in the peripheral direction of the tire, alternately pointing in opposite directions transverse to the peripheral direction of the tire, at least three peripheral rows of V-shaped blocks being respectively separated from one another by linearly extending peripheral grooves, with the width of the two axially outer rows of blocks essentially corresponding to the axial dimension of each of said blocks individually in the respective outer row, while the successive blocks of the middle row of blocks are laterally offset relative to each other in such a way that the collective width of said middle row is approximately 1.1 to 1.8 times the axial dimension of each of said blocks individually in the respective middle row and the collective width of the middle row is larger than the width of the outer rows, the improvement therewith comprising that the depth of inclined grooves located between successive blocks of said middle row is essentially considerably less than the depth of the remaining inclined grooves located between the blocks in the outer rows and of the peripheral grooves located between the rows of blocks.
- 2. A tread configuration according to claim 1, in which the depth of the inclined grooves of said middle row is approximately 1/4 to 1/3 of the depth of the remaining grooves.
- 3. A tread configuration according to claim 1, in which the width of the inclined grooves is approximately 1/2 to 3/4 of the peripheral grooves.
- 4. A tread configuration according to claim 1, in which the axial distance of the blocks located in the outer rows is practically equal and that also the axial distance of all blocks located in the center region is practically equal and that the axial distance of the blocks in the center region is smaller by approximately 20% to 40% than the axial distance of the blocks located in the outer rows.
- 5. A tread configuration according to claim 1, in which the depths of the inclined grooves in the center region is approximately 1 mm and the width of these inclined grooves is approximately 2 mm to 3 mm.
- 6. A tread configuration according to claim 1, in which the depths of the inclined grooves of both outer rows is approximately 4 mm and the width of these inclined grooves is approximately 2 mm to 3 mm.
- 7. A tread configuration according to claim 1, in which the depth of the peripheral grooves is approximately 4 mm, while the width of these peripheral grooves corresponds practically to this depth measurement of 4 mm.
Priority Claims (2)
Number |
Date |
Country |
Kind |
7923582[U] |
Aug 1979 |
DEX |
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8137115[U] |
Dec 1981 |
DEX |
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Parent Case Info
This is a continuation-in-part of co-pending application Ser. No. 365,030-Pieper filed Apr. 2, 1982, now U.S. Pat. No. 4,383,568-Pieper dated May 17, 1983, belonging to the assignee of the present invention, which in turn is a continuation-in-part of then co-pending parent application Ser. No. 177,858-Pieper filed Aug. 14, 1980 (now abandoned).
US Referenced Citations (8)
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
365030 |
Apr 1982 |
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Parent |
177858 |
Aug 1980 |
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