EP0385192A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
High performance tire
Assignee: Pirelli and C SpA
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Filing: 1990-02-15
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Granted: —
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Expires: 2010-02-15
Abstract
Abstract The invention relates to high-performance tyres provided with self-supporting capability, that is capable of running at high speed and for rather long periods even if they are completely deflated. The tyre is comprised of a lenticular section member (9) made of elastomeric material of average hardness, disposed at the inside of the tyre side and incorporating a textile reinforcement insert (10) provided with cords oriented towards a substantially radial direction and extending radially from the side centre line as far as under the end of the belt.
Inventors
- 👤 Mario Mezzanotte
- 👤 Franco Bottasso
- 👤 Michele Orlandi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 07:56
CPC Classifications
B; B60; B60C; B60C13/00; B60C17/00; B60C17/0009; B60C9/00; B60C9/02; B60C9/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
217 words
1) A tyre for vehicle wheels provided with a textile carcass (1) comprising at least a ply of reinforcing cords inclined at an angle not lower than 70° with respect to the circumferential direction of the tyre, a thread band (5) disposed crown-wise on said carcass, a ring-shaped reinforcement structure (6, 7) introduced between said tread band and carcass, substantially as wide as said tread band, sides and beads for anchoring said tyre to a corresponding mounting rim, said sides consisting of an annular section member (9) made of elastomeric material, of substantially lenticular form in section, extending radially from said bead to said crown-wise area and axially under the corresponding end of said ring-shaped reinforcement structure, said beads consisting of an annular circumferentially inextensible reinforcement core (2) and a filling (3) made of elastomeric material and of substantially triangular form in section, radially overlapping said annular reinforcement core, characterized in that said annular section member (9) incorporates a textile reinforcement element (10) located at least in the region of the radially exterior centre line of the side and axially extending at least as far as the radially external end of said annular section member, which is comprised of reinforcement cords inclined to the circumferential direction of the tyre according to an angle of at least 60°.
Claim 2
Dependent Claim
217 words
1) A tyre for vehicle wheels provided with a textile carcass (1) comprising at least a ply of reinforcing cords inclined at an angle not lower than 70° with respect to the circumferential direction of the tyre, a thread band (5) disposed crown-wise on said carcass, a ring-shaped reinforcement structure (6, 7) introduced between said tread band and carcass, substantially as wide as said tread band, sides and beads for anchoring said tyre to a corresponding mounting rim, said sides consisting of an annular section member (9) made of elastomeric material, of substantially lenticular form in section, extending radially from said bead to said crown-wise area and axially under the corresponding end of said ring-shaped reinforcement structure, said beads consisting of an annular circumferentially inextensible reinforcement core (2) and a filling (3) made of elastomeric material and of substantially triangular form in section, radially overlapping said annular reinforcement core, characterized in that said annular section member (9) incorporates a textile reinforcement element (10) located at least in the region of the radially exterior centre line of the side and axially extending at least as far as the radially external end of said annular section member, which is comprised of reinforcement cords inclined to the circumferential direction of the tyre according to an angle of at least 60°.
Claim 3
Dependent Claim
50 words
2) A tyre as claimed in claim 1, characterized in that said reinforcement cords are disposed so that they intersect the reinforcement cords of the carcass ply and are inclined thereto according to an angle the value of which is higher in said crown area and lower in said sides.
Claim 4
Dependent Claim
28 words
3) A tyre according to claim 1, characterized in that in said textile element (10) the mesh value of said reinforcement cords ranges between 90 and 130 threads/dm.
Claim 5
Dependent Claim
44 words
4) A tyre according to claim 1, characterized in that in said sides the mesh value of the reinforcement cords of the textile element (10) is higher than that of the cords of the carcass ply by an amount ranging between 10% and 50%.
Claim 6
Dependent Claim
28 words
5) A tyre according to claim 1, characterized in that said textile reinforcement element (10) extends radially towards said bead, not beyond the end of said filling (3).
Claim 7
Dependent Claim
26 words
6) A tyre according to claim 1, characterized in that said textile reinforcement element (10) lies along the centre line axis of said annular section member.
Claim 8
Dependent Claim
32 words
7) A tyre according to claim 1, characterized in that said textile reinforcement element (10) is a single element in the tyre and extends axially from one side to the opposite one.
Claim 9
Dependent Claim
23 words
8) A tyre according to claim 1, characterized in that the cords of said textile reinforcement element (10) are made of single monofilaments.
Claim 10
Dependent Claim
38 words
9) A tyre according to claim 1, characterized in that the overlapping area between said reinforcement ring-shaped structure (6, 7) and lenticular section member (9) is equal to 22% maximum of the width of said ring-shaped reinforcement structure.
Claim 11
Dependent Claim
28 words
10) A tyre according to claim 1, characterized in that the hardness of said lenticular section member (9) is in the range of 55° to 75° Shore A.
References Cited (Backward Citations)
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