Vehicle tire intended to be fitted with antikid devices and tire matrix for manufacturing same

Claim 2

A vehicle tire the tread of which has a purposeful number of openings (2,5,6) formed by respective walls in said tread and projecting substantially perpendicularly inwards from the tread and shaped for accommodation of anti-skid devices (17) that have a flange extension (18) at their bottom end, wherein each of said walls comprises: a section (7,10,11) extending inwardly from the tread surface, a lateral extension (12,15,16) at the bottOm end of said section and inwardly extending therefrom a predetermined distance for breadth and depth-wise accommodating the said flange extension of the device, and underneath the said extension, viewed longitudinally in direction of the opening, continued inward extension means (13,24,14) in said wall for forming at least one air pocket (19,22,23) so that when the flange of the said device is located in position in the said lateral extension (12,15,16) said air pocket extension means forms at least one air cushion underneath the flange.

Claim 3

A vehicle tire according to claim 1, characterized in that the section (7, 10, 11) of the opening above the said extension and directed towards the tread has the shape of a cone widening upwards.

Claim 4

A vehicle tire according to claim 1, characterized in that the opening consists of a vertical section that extends at its bottom end towards the sides and downwards and is thereafter curved downwards towards the centre, whereby the bottom of the extension is shaped as a globular face.

Claim 5

A vehicle tire according to claim 3, characterized in that in the middle of the said globular face there is an extension projecting downwards.

Claim 6

A vehicle tire according to claim 1, characterized in that each opening comprises a vertical section extending downwards from the tread and having the shape of a cylinder or of a cone widening upwards, and of an annular recess extending from this section downwards and towards the sides, in the middle of which recess there is an elevation (25).

Claim 7

A matrix of vehicle tire for the manufacturing of any of the tires according to claim 1, characterized in that a tire matrix in itself known is fitted with such pegs projecting from the surface of the matrix for the formation of openings into the tire tread as have a lateral extension at the outer end, which extension also continues longitudinally outwards in the longitudinal direction of the peg.

Claim 8

A matrix according to claim 6 characterized in that said peg has a vertical section that extends at its bottom end towards the sides and longitudinally outward and is thereafter curved longitudinally outwards towards the center in the shape of a globular face.

Claim 9

A matrix according to claim 7, characterized in that the shaft section of the peg has the form of a cylinder or of a cone widening towards the surface of the matrix.

Claim 10

A matrix according to claim 7 characterized in that in the middle of said globulas face said peg projects still further outward longitudinally.

Claim 11

A matrix according to claim 6, characterized in that said peg has a vertical shaft section extending longitudinally outward from said matrix surface with the shape of a cylinder or of a narrowing cone and has at the outer end thereof has an annulus extending laterally and longitudinally outwardly with a recess in the middle of the outermost surface of the annulus.

Claim 12

A matrix according to claim 6, characterized in that the shaft section of the peg has the form of a cylinder or of a cone widening towards the surface of the matrix.

Claim 13

A vehicle tire according to claim 1, wherein each of said sections that extends inwardly from the tread surface (7, 10, 11) has a substantially cylindrical shape.

Claim 14

A vehicle tire according to claim 1 wherein each of said air pocket extension means has a curved elliptical surface.

Claim 15

A vehicle tire according to claim 13, wherein the elliptical face of each of said air pocket extension means has a centrally disposed, vertically upwardly directed extension means that is effective to produce an annular air cushion underneath the flange.

Claim 16

A vehicle according to claim 1 wherein each of said sections that extend inwardly from the tread surface has the shape of an inverted cone.

Claim 17

A vehicle tire according to claim 1, wherein each of said air pocket extension means is defined by a centrally disposed vertically inwardly directed cup shaped surface.

Claim 18

A vehicle tire, the tread of which contains a substantial numbeR of openings (2, 5, 6) that project substantially perpendicularly inwardly from the tread surface and are configured for accommodating anti-skid devices having an annular body (17) and at the bottom thereof an annular flange extension (18) having a given breadth and given depth, each of said openings being defined by a wall comprising: an annular section (7, 10, 11) extending inwardly from the tread surface and of annular dimension to tightly accommodate said annular body (17), an annular lateral and inward extension (12, 15, 16) at the bottom of said bottom of said section and of predetermined breadth and depth dimensions to tightly accommodate said flange extension (18), and closed annular extension means (13, 24, 14) in said wall and inwardly containing said first mentioned annular extension (12, 15, 16) for forming at least one air pocket (19, 22, 23) so that when said flange extension (18) is seated in said first annular extension (12, 15, 16) said air pocket extension means (13, 24, 14) forms at least one air cushion underneath the flange.

Claim 19

A vehicle tire, the tread of which contains a substantial numbeR of openings (2, 5, 6) that project substantially perpendicularly inwardly from the tread surface and are configured for accommodating anti-skid devices having an annular body (17) and at the bottom thereof an annular flange extension (18) having a given breadth and given depth, each of said openings being defined by a wall comprising: an annular section (7, 10, 11) extending inwardly from the tread surface and of annular dimension to tightly accommodate said annular body (17), an annular lateral and inward extension (12, 15, 16) at the bottom of said bottom of said section and of predetermined breadth and depth dimensions to tightly accommodate said flange extension (18), and closed annular extension means (13, 24, 14) in said wall and inwardly containing said first mentioned annular extension (12, 15, 16) for forming at least one air pocket (19, 22, 23) so that when said flange extension (18) is seated in said first annular extension (12, 15, 16) said air pocket extension means (13, 24, 14) forms at least one air cushion underneath the flange.

Claim 20

A vehicle tire as in claim 17 including a plurality of the said anti-skid devices each having an annular body (17) and at the bottom thereof an annular flange extension (18) having a given breadth and given depth, said annular body (17) of each said device being tightly fit within a respective one of said openings (2, 5, 6) and its said flange extension (18) being tightly seated in said annular lateral and inward extension (12, 15, 16) width said air pocket extension means (13, 24, 14) leaving at least one air cushion underneath the flange.

Claim 21

A tire as in claim 18, wherein the annular section has a cylindrical shape.

Claim 22

A tire as in claim 18 wherein the annular section is in the form of an inverted cone.

Claim 23

A tire as in claim 20, wherein the elliptical shaped surface of each of said air pocket extension means has a centrally disposed vertically upwardly directed extension means that is effective to produce an annular air cushion underneath the annular flange.

Claim 24

A tire as in claim 18, wherein said air pocket extension means has a generally elliptical shaped surface.

Claim 25

A tire as in claim 18 wherein each of said air pocket extension means is defined by a centrally disposed vertically inwardly directed cup shaped surface.

Claim 26

A tire as in claim 18 wherein said tire has a carcass and includes rubber between said carcass and each of said air pocket extension means.