Plastic article or earthenware shaping or treating: apparatus – Reshaping – resizing or vulcanizing means for tire – tire... – Internal mold – form or support for toroid
Patent
1991-04-30
1992-03-24
Hoag, Willard
Plastic article or earthenware shaping or treating: apparatus
Reshaping, resizing or vulcanizing means for tire, tire...
Internal mold, form or support for toroid
425 58, 425400, B29C 3502
Patent
active
050982699
ABSTRACT:
A center mechanism for a tire mold comprising a mushroom-shaped bladder, a clamp ring for clamping a lower opening edge of the bladder, a post cylinder for extending and contracting a height of the bladder, a movable stopper for receiving a depressing force against the clamp ring which is generated by heating medium introduced into the bladder upon vulcanizing a tire, and a bladder elevator cylinder for elevating and lowering the clamp ring upon loading and unloading a tire.
REFERENCES:
patent: 2559118 (1951-07-01), Frank
patent: 3396221 (1968-08-01), Balle et al.
patent: 3790656 (1974-02-01), Getz
patent: 3846058 (1974-11-01), Yoshida et al.
Irie Nobuhiko
Katayama Hideaki
Kawasaki Masami
Hoag Willard
Mitsubishi Jukogyo Kabushiki Kaisha
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