Bead seal ring unit

Details Bead seal ring unit Bead seal ring unit

1985-11-08

1987-01-06

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Reshaping, resizing or vulcanizing means for tire, tire...

Toroidal or annular female shaping means and coacting means...

156397, 156398, 249205, 277188R, 277207R, B29C 3300

Patent

active

046343571

ABSTRACT:
A bead seal ring for use in the retreading of radial tires by use of a bead sealing ring unit that provides positive mechanical pressure for sealing the curing envelope between the bead sealing ring unit and the bead area of the tire by a radial force. In its relaxed or initial condition, the bead sealing ring unit has a diameter smaller than the bead diameter of the tire. The bead sealing ring unit is placed into sealing position and then expanded by a locking device secured to a metal band which is part of the bead sealing ring unit.

REFERENCES:
patent: 1940582 (1933-12-01), DeMattia
patent: 2475579 (1949-07-01), Napier
patent: 2966936 (1961-01-01), Schelkmann
patent: 3184794 (1965-05-01), Sherkin
patent: 3236709 (1966-02-01), Carver
patent: 3802978 (1974-04-01), Barnett
patent: 3884740 (1975-05-01), Schelkmann
patent: 3895985 (1975-07-01), Schelkmann
patent: 3966535 (1976-06-01), Abularach
patent: 4129474 (1978-12-01), Martin
patent: 4175991 (1979-11-01), Harrelson
patent: 4242169 (1980-12-01), DeHaven
patent: 4274897 (1981-06-01), Barefoot
patent: 4309234 (1982-01-01), Witherspoon

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