Tire tread molding apparatus

Details Tire tread molding apparatus Tire tread molding apparatus

1977-08-08

1979-06-12

Kittle, John E.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Tire body building type

152361R, 264326, 425 51, B29H 1704

Patent

active

041579330

ABSTRACT:
In the moulding of the tread portion of a pneumatic tire the radially inner surface of the mould cavity is defined by the radially outer surface of an annular former of elastomeric material. The former is contracted, a breaker assembly is built onto it and it is allowed to expand to stress the breaker. In the mould the former is further expanded and is held in compression between mould parts and the breaker to withstand moulding pressure. The former may have inflatable pockets to throw the breaker edges into contact with tire sidewall reinforcements.

REFERENCES:
patent: 1405470 (1922-02-01), Wheatley
patent: 1657835 (1928-01-01), Mather
patent: 2071864 (1937-02-01), Myers
patent: 2145806 (1939-01-01), Schnedarek
patent: 3218209 (1965-11-01), Travers et al.
patent: 3223566 (1965-12-01), Niclas et al.
patent: 3484900 (1969-12-01), Sands et al.
patent: 3837986 (1974-09-01), Gorter et al.
patent: 3994650 (1976-11-01), Nishimura et al.
patent: 4057446 (1977-11-01), Goodfellow

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