Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Sectional female mold including locking or clamping assembly...
Patent
1982-06-08
1983-05-17
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Sectional female mold including locking or clamping assembly...
425 32, 425590, B29H 502, B29H 508
Patent
active
043838081
ABSTRACT:
An improved vulcanizing press for manufacturing tires is disclosed which is constructed such that a molding die assembly is clamped by means of a plurality of hydraulic cylinder units, wherein the respective hydraulic cylinder units are provided with a booster for serving to pressurize hydraulic liquid to actuate a ram slidably contained in a hydraulic chamber and a pilot operated check valve for controlling supply of hydraulic liquid into said hydraulic chamber or discharge of the same therefrom.
REFERENCES:
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patent: 2308948 (1943-01-01), Bosomworth
patent: 2424915 (1947-07-01), Bosomworth et al.
patent: 2987770 (1961-06-01), Powell
patent: 3465387 (1969-09-01), Allard et al.
patent: 3663140 (1972-05-01), Hehl
patent: 3859015 (1975-01-01), O'Brien
patent: 4332536 (1982-06-01), Singh et al.
Fukuda Shozo
Hasegawa Akira
Kubo Masayoshi
Sakaguchi Katsuyoshi
Flint, Jr. J. Howard
Mitsubishi Jukogyo Kabushiki Kaisha
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