公开(公告)号：US3638707A

公开(公告)日：1972-02-01

申请号：US3638707D

申请日：1969-01-10

Applicant: UNIROYAL ENGLEBERT FRANCE

Inventor： GALL JACQUES LE

IPC: B60B21/12 ,  B60C21/04

CPC classification number: B60B21/12 ,  Y10T152/10657

Abstract: A novel construction for locally strengthened tire flaps made of rubber and having circumferentially uniform cross-sectional characteristics is disclosed, together with a method of producing such flaps. In the preferred form of the invention, the major portion of the flap is made of a standard soft rubber stock, while the remaining minor portion of the flap, in which the valve-stem-accommodating hole is provided, is made of a different rubber stock having, when cured, a greater hardness and resistance to distortion or tearing stresses than the standard rubber stock. The flap is produced by splicing the two ends of an appropriately short length of the raw hard rubber stock to the respective ends of an appropriately longer strip of the raw soft rubber stock, thereby forming a ring, and then introducing the ring into any suitable annular mold, e.g. a compression mold, for final shaping and curing by which the two rubber sections are vulcanized into an integral continuous structure.

Abstract translation: 公开了一种用于局部加强由橡胶制成并具有周向均匀横截面特性的轮胎襟翼的结构以及制造这种翼片的方法。 在本发明的优选形式中，翼片的主要部分由标准软橡胶原料制成，而其中设置有阀杆的容纳孔的翼片的剩余小部分由不同的橡胶制成 原料在固化时具有比标准橡胶原料更高的硬度和抗变形或抗撕裂应力的能力。 通过将原始硬橡胶原料的适当短长度的两端接合到原始软橡胶原料的适当长度的条带的相应端部，从而形成环，然后将环引入任何合适的环状物 模具，例如 压缩模具，用于最终成形和固化，通过该压缩模具将两个橡胶部分硫化成一体的连续结构。