Vehicle pneumatic tire with specified carcass length and/or curvature

A vehicle pneumatic tire comprising:

• a patterned tread;
• a belt brace comprising at least one layer;
• bead areas having bead cores;
• a carcass having at least one layer, which is arranged through said sidewalls, around the bead cores, and back into the sidewalls as turn-ups;
• said carcass and said belt brace being coupled together at a belt binding point, and a radially outmost portion of said bead area adapted to contact a standard rim forming a bead binding point between said carcass and said bead area;
• said carcass, in a region between said belt binding point and said bead binding point, being formed with a length shorter than that of a theoretical carcass between said belt binding point and said bead binding points determined in accordance with an equilibrium figure;
• and
• said length of said carcass and said theoretical length of said carcass being determined for the tire in an unpressurized condition and when the tire is mounted on the standard rim,
• wherein, in an unpressurized, unloaded condition of the tire while it is mounted on the standard rim, said carcass, in an area between said belt binding point and a largest cross-sectional width point of said tire, has a radius of curvature which is smaller than a radius of curvature of said carcass between said largest cross-sectional width point and said bead binding point, and
• wherein, in the unpressurized, unloaded, and mounted condition of the tire, a ratio of the radii of curvature, from smallest radius to largest radius, is between about 1:1.1 and 1:2.2.

A vehicle pneumatic tire comprising:

• a patterned tread;
• a belt brace comprising at least one layer;
• bead areas having bead cores;
• a carcass having at least one layer, which is arranged through said sidewalls, around the bead cores, and back into the sidewalls as turn-ups;
• said carcass and said belt brace being coupled together at a belt binding point, and a radially outmost portion of said bead area adapted to contact a standard rim forming a bead binding point between said carcass and said bead area;
• said carcass, in a region between said belt binding point and said bead binding point, being formed with a length shorter than that of a theoretical carcass between said belt binding point and said bead binding points determined in accordance with an equilibrium figure;
• and
• said length of said carcass and said theoretical length of said carcass being determined for the tire in an unpressurized condition and when the tire is mounted on the standard rim,
• wherein, in an unpressurized, unloaded condition of the tire while it is mounted on the standard rim, said carcass, in an area between said belt binding point and a largest cross-sectional width point of said tire, has a radius of curvature which is smaller than a radius of curvature of said carcass between said largest cross-sectional width point and said bead binding point, and
• wherein, in the unpressurized, unloaded, and mounted condition of the tire, the radius of curvature of said carcass is smallest in a region of said belt binding point and largest in a region of said bead binding point, and wherein the radius of curvature between the belt binding point region and bead binding point region continuously increases.

A process for forming a vehicle pneumatic tire that includes a patterned tread, a belt brace comprising at least one layer, bead areas having bead cores, and a carcass, having at least one layer, the process comprising:

• arranging the carcass through the sidewalls, around the bead cores, and back into the sidewalls as turn-ups, wherein a portion of the carcass extends at least from a belt binding point, at which the carcass is coupled to the belt, to a bead binding point, which is a radially outmost portion of the bead area that is adapted to contact a standard rim;
• and
• forming the portion of the carcass with a length which is shorter than that of a theoretical carcass between the belt binding point and the bead binding point determined in accordance with an equilibrium figure, the length of the carcass and the theoretical length of the carcass being determined for the tire in an unpressurized condition and when the tire is mounted on the standard rim,
• wherein the length of the carcass between the binding points is about 80 to 97% of the length of the theoretical carcass between the binding points.

A process for forming a vehicle pneumatic tire that includes a patterned tread, a belt brace comprising at least one layer, bead areas having bead cores, and a carcass, having at least one layer, the process comprising:

• arranging the carcass through the sidewalls, around the bead cores, and back into the sidewalls as turn-ups, wherein a portion of the carcass extends at least from a belt binding point, at which the carcass is coupled to the belt, to a bead binding point, which is a radially outmost portion of the bead area that is adapted to contact a standard rim;
• and
• forming the portion of the carcass with a length which is shorter than that of a theoretical carcass between the belt binding point and the bead binding point determined in accordance with an equilibrium figure, the length of the carcass and the theoretical length of the carcass being determined for the tire in an unpressurized condition and when the tire is mounted on the standard rim,
• wherein, in an unpressurized, unloaded condition of the tire while it is mounted on the standard rim, the process further comprises:
• forming the carcass, in an area between the belt binding point and a largest cross-sectional width point of said tire, with a radius of curvature which is smaller than a radius of curvature of said carcass between the largest cross-sectional width point and the bead binding point, and
• wherein, in the unpressurized, unloaded, and mounted condition of the tire, a ratio of the radii of curvature, from smallest radius to largest radius, is between about 1:1.1 and 1:2.2.

A process for forming a vehicle pneumatic tire that includes a patterned tread, a belt brace comprising at least one layer, bead areas having bead cores, and a carcass, having at least one layer, the process comprising:

• arranging the carcass through the sidewalls, around the bead cores, and back into the sidewalls as turn-ups, wherein a portion of the carcass extends at least from a belt binding point, at which the carcass is coupled to the belt, to a bead binding point, which is a radially outmost portion of the bead area that is adapted to contact a standard rim;
• and
• forming the portion of the carcass with a length which is shorter than that of a theoretical carcass between the belt binding point and the bead binding point determined in accordance with an equilibrium figure, the length of the carcass and the theoretical length of the carcass being determined for the tire in an unpressurized condition and when the tire is mounted on the standard rim,
• wherein, in an unpressurized, unloaded condition of the tire while it is mounted on the standard rim, the process further comprises:
• forming the carcass, in an area between the belt binding point and a largest cross-sectional width point of said tire, with a radius of curvature which is smaller than a radius of curvature of said carcass between the largest cross-sectional width point and the bead binding point, and
• wherein, in the unpressurized, unloaded, and mounted condition of the tire, the process further comprising:
• forming the carcass such that its radius of curvature is smallest in a region of the belt binding point and is largest in a region of the bead binding point, wherein the radius of curvature between the belt binding point region and bead binding point region continuously increases.