Self-locking mold

Details Self-locking mold Self-locking mold

1975-11-25

1976-11-09

Flint, Jr., J. Howard

Plastic article or earthenware shaping or treating: apparatus

Product or preform repair or restoring means

Tire recapping, rebeading or sidewall replacing means

425 23, B29H 504

Patent

active

039908216

ABSTRACT:
This disclosure relates to a self-locking mold formed of a plurality of matrices movable between open and closed positions thereof with the latter position defining a generally annular chamber, means for pressurizing an object within the annular chamber, and means in the form of a pair of locking plates responsive to the pressurization for locking the matrices in the closed position thereof.

REFERENCES:
patent: 1388255 (1921-08-01), Hardeman
patent: 2174188 (1939-09-01), Heintz
patent: 2272231 (1942-02-01), Voth
patent: 2567985 (1951-09-01), Baker et al.
patent: 2812547 (1957-11-01), Duerksen et al.
patent: 2826783 (1958-03-01), Robbins
patent: 3137032 (1964-06-01), MacMillan
patent: 3184794 (1965-05-01), Sherkin
patent: 3233284 (1966-02-01), MacMillan
patent: 3520025 (1970-07-01), MacMillan

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