Plastic article or earthenware shaping or treating: apparatus – Product or preform repair or restoring means – Tire recapping – rebeading or sidewall replacing means
Patent
1976-05-24
1977-07-12
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 33, 425 36, 425 38, B29H 504
Patent
active
040351173
ABSTRACT:
A charging device for a vulcanizing press has a cylinder disposed concentrically with a vulcanizing mold, a movable piston vertically movable through the cylinder, a piston rod secured to the piston, and a gas-tight cylindrical bladder of a flexible material held between the upper end of the piston rod and the top of the cylinder. The charging further includes hollow cylindrical body disposed above and vertically movable with respect to the mold and having an inner diameter greater than the outer diameter of the bladder, the hollow cylindrical body being provided with a fluid inlet port for maintaining the pressure within the space defined between the inner surface of the hollow cylindrical body and the outer surface of the bladder to be higher than the pressure within the bladder, and also provided on the lower end of the outer periphery thereof with a tire retaining device capable of expansion and contraction in the radial direction for holding the upper bead of a tire to be loaded in the mold for vulcanization.
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Fujieda Yasuhiko
Nakagawa Kazuhiko
(Kobe Steel, Ltd.)
Flint, Jr. J. Howard
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