Pneumatic vehicle tire including overlapping carcass layer sections
AssigneeUniroyal Englebert Reifen GmbH
InventorRudolf Chavet
Life of this patent
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Abstract
In a pneumatic vehicle tire of a divided carcass the reinforcement elements are arranged at different angles of orientation. They may be provided as a combination of the same or different materials, the same or different cord constructions, the same or different packing densities. The overlap area of two adjacent carcass layer sections represents a transition area of a gradually stepped stiffness. The overlap area represents a constructive discontinuity and is employed for influencing the force fluctuations. The divided carcass which is essentially a sounding board may also be influenced by differently constructed carcass layer sections. The manufacture of such a divided carcass is inexpensive.
Claims16
In a pneumatic vehicle tire comprising a divided carcass with at least two carcass layer sections, tire beads with pull-resistant bead cores, sidewalls, a tire tread and a belt-type reinforcement between the carcass and the tire tread, whereby respective looped-around ends of a first and a second of said carcass layer sections are anchored at respective ones of said bead cores and respective further ends of said first and second carcass layer sections are disposed within respective overlap areas with adjacent ones of said carcass layer sections, wherein the improvement comprises:
- reinforcement elements of at least one of said carcass layer sections have a different orientation than further reinforcement elements of further ones of said carcass layer sections, with at least one orientation being radially disposed at an angle of 90.degree. relative to the equatorial plane of said vehicle tire and at least one further orientation being disposed at an angle of between 85.degree. and 88.degree. relative to the equatorial plane of said vehicle tire;
- and
- with said overlap areas, located between a respective center of said side walls and a respective shoulder portion of said tire tread, representing a stepped stiffness transition area.
Dependencies are inferred from the claim text.