Tire tread forming method

Details Tire tread forming method Tire tread forming method

1977-04-28

1979-05-01

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

156125, 156129, 156394, 264161, 264255, 264326, 425 46, 425 47, B29H 502

Patent

active

041523881

ABSTRACT:
A body having rubber material thereon is positioned on a lower member, and an upper member is moved toward the lower member, such relative movement causing tread-forming shoes to move to inward positions to form a tread on the rubber material. As an alternative, the upper and lower members may be brought together, and rubber material may be injected into position to have a tread formed thereon. Upon movement of the upper and lower member relatively apart, the rubber material is made to remain in contact with the shoes, and the body is removed, whereupon an annular core having rubber material thereon is disposed on the lower member, and the upper and lower members are again brought together to deposit the rubber material in contact with the shoes onto the rubber material on the core.

REFERENCES:
patent: 1380085 (1921-05-01), Walton
patent: 1416362 (1922-05-01), Lambert
patent: 2672914 (1954-03-01), Weigold et al.
patent: 2686554 (1954-08-01), Hinman
patent: 3553309 (1971-01-01), Pacciarini et al.
patent: 3825457 (1974-07-01), Holroyd et al.
patent: 3974018 (1976-08-01), Arimura et al.
patent: 3989791 (1976-11-01), Tippin

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