Reinforcement of annular bodies

Claim 2

A tire construction including an elongate, flexible yarnlike reinforcement disposed interiorly thereof, said yarn being inclined with respect to the longitudinal axis of said tire body as viewed exteriorly thereof, and said yarnlike reinforcement including a twisted-together plurality of glass filaments, said twisted glass filaments defining a spiral, the direction of the slope of the central portion of which spiral taken with respect to the axis of said elongate reinforcement is generally opposite to the angle of inclination of said yarn taken with respect to the axis of said tire body.

Claim 3

A tire construction as claimed in claim 1, wherein the direction of the slope of the central portion of said spiral is inclined to the left with respect to the yarn axis (an S-twist) when the yarn itself is inclined to the right with respect to the longitudinal axis of said annular body and is inclined to the right with respect to the yarn axis (a Z-twist) when the yarn itself is inclined to the left with respect to the longitudinal axis of said annular body.

Claim 4

The invention as claimed in claim 2, wherein said yarnlike reinforcement proceeds in repeated side-by-side spiral disposition generally longitudinally of said body.

Claim 5

The invention as claimed in claim 3, wherein the amount of twist in said yarnlike reinforcement ranges from about 1 to about 10 twists per inch.

Claim 6

The tire construction as claimed in claim 1, wherein said yarnlike reinforcement is present as (a) a plurality of mutually parallel cords defining a first carcass ply, (b) a further plurality of mutually parallel cords defining a second carcass ply contiguous to said first carcass ply and the cords in said first ply are oppositely inclined to the cords in the second ply while the direction of twist in each of said cords in said plies are such that the slope of the central portion of the spiral defined by the twist is opposite to the inclination of the cords in the respective plies.

Claim 7

The tire construction as claimed in claim 1, wherein said yarnlike reinforcement constitutes the mutually parallel cords in adjacent belt plies, said plies featuring cords of opposite inclination to the peripheral centerline of said tire and said cords feature a twist direction such that the spiral inherent in the twist defines a slope having a central portion which is oppositely inclined to the cord angle with the peripheral centerline.

Claim 8

In a tire construction including an interior, elongate yarn or cord reinforcement, said yarn or cord being formed of twisted-together glass filaments and being of either right-hand or left-hand disposition with respect to the equatorial centerline of said annular body as viewed exteRiorly thereof; the improvement wherein the slope of the central portion of the spiral inherent in a given twist, S or Z, and the inclination of the yarn are generally opposite.

Claim 9

In a tire construction including an interior, elongate yarn or cord reinforcement, said yarn or cord being formed of twisted-together glass filaments and being of either right-hand or left-hand disposition with respect to the equatorial centerline of said annular body as viewed exteRiorly thereof; the improvement wherein the slope of the central portion of the spiral inherent in a given twist, S or Z, and the inclination of the yarn are generally opposite.

Claim 10

In a tire construction containing an interior reinforcement in the form of an elongate, flexible yarn or cord including a twisted-together assembly of glass filaments, said body being designed for rotation in such manner that the path described by any given segment during rotation includes a departure from circular; the improvement wherein the angular disposition of said reinforcement yarn or cord member with respect to the peripheral centerline of said annulus and the direction of twist, S or Z, of the subelements of said cord members are preselected in combination as to provide a minimum of untwisting of said cord glass filaments as said body rotates.

Claim 11

In a tire construction containing an interior reinforcement in the form of an elongate, flexible yarn or cord including a twisted-together assembly of glass filaments, said body being designed for rotation in such manner that the path described by any given segment during rotation includes a departure from circular; the improvement wherein the angular disposition of said reinforcement yarn or cord member with respect to the peripheral centerline of said annulus and the direction of twist, S or Z, of the subelements of said cord members are preselected in combination as to provide a minimum of untwisting of said cord glass filaments as said body rotates.

Claim 12

The invention as claimed in claim 8, wherein the twisted-together glass filaments define an amount of twist ranging from about 1 to about 10 twists per inch.

Claim 13

In a tire construction composed generally of wheel engaging means, a connected toroidal carcass and a ground engaging tread carried at the crown of said carcass, said tire including interiorly thereof a plurality of reinforcing plies each including mutually parallel cords composed of twisted-together filaments of glass, said cords in adjacent plies being oppositely inclined; the improvement wherein the cords in adjacent plies are of opposite twist.

Claim 14

In a tire construction composed generally of wheel engaging means, a connected toroidal carcass and a ground engaging tread carried at the crown of said carcass, said tire including interiorly thereof a plurality of reinforcing plies each including mutually parallel cords composed of twisted-together filaments of glass, said cords in adjacent plies being oppositely inclined; the improvement wherein the cords in adjacent plies are of opposite twist.

Claim 15

The tire construction as claimed in claim 10, wherein the cords of left-hand inclination with respect to the peripheral centerline, as viewed from the tread side of the carcass, employ a Z-twist while the carcass ply cords of right-hand inclination with respect to the peripheral centerline employ an S-twist.

Claim 16

In a tire construction subject to deflection during rotation, said body containing an interior cord reinforcement extending circumferentially in repeated spirals through said body at an angle to the longitudinal or circumferential axis of said body, said cord including a twisted-together plurality of glass filaments; the improvement wherein said cord, when of left-hand inclination, features of a Z-twist configuration of filaments and, when of right-hand inclination, features an S-twist configuration of filaments.

Claim 17

In a tire construction subject to deflection during rotation, said body containing an interior cord reinforcement extending circumferentially in repeated spirals through said body at an angle to the longitudinal or circumferential axis of said body, said cord including a twisted-together plurality of glass filaments; the improvement wherein said cord, when of left-hand inclination, features of a Z-twist configuration of filaments and, when of right-hand inclination, features an S-twist configuration of filaments.

Claim 18

The tire construction as claimed in claim 12, wherein the amount of twist of said filaments ranges from about 1 to about 10 twists per inch.