Plastic and nonmetallic article shaping or treating: processes – Direct application of fluid pressure differential to... – Producing toroidal work
Patent
1994-07-20
1996-12-17
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Direct application of fluid pressure differential to...
Producing toroidal work
264102, 264326, 425 47, B29C 3500
Patent
active
055850642
ABSTRACT:
An apparatus for providing a vacuum in a segmented tire mold includes an upper sidewall assembly and lower sidewall assembly, a plurality of radially moveable tread mold segments operable with the upper sidewall assembly and lower sidewall assembly to define a tire mold cavity. A conical actuating ring assembly surrounds the tire mold segments and engages the mold segments to provide radial movement of the mold segments. The apparatus includes a first seal between the conical actuating ring assembly and the lower mold assembly, as well as a second seal between the conical actuating ring and the upper sidewall assembly, thereby sealing the space defined by the tire mold so that a vacuum can be drawn on the tire mold cavity upon the closing of the mold.
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Dernbach Helmut
Jacobs Bernard B.
Merx Raymond
Miller Craig D.
Moris-Herbeuval Veronique
Lacher Frederick K.
The Goodyear Tire & Rubber Company
Vargot Mathieu D.
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