Plastic article or earthenware shaping or treating: apparatus – Distinct means to feed – support or manipulate preform stock... – And means to form or reshape preform
Patent
1990-03-09
1992-02-11
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Distinct means to feed, support or manipulate preform stock...
And means to form or reshape preform
425116, 425128, 425390, 425393, 425395, 425397, 4254051, 264258, 264313, B29C 4304
Patent
active
050871870
ABSTRACT:
An apparatus for molding hollow composite articles having a plurality of internal webs. A mandrel assembly apparatus includes slidable sidewall members, an inflatable pressure membrane surrounding the length of the slidable sidewall members and actuator means mounted on the interior of the sidewall members for lateral displacement thereof together with the inflatable membrane. Adjacent mandrel assemblies accurately position the internal webs of the composite article mechanically, while the inflatable membranes serve to compact the web laminates. The expandable sidewall members also prevent bridging or tearing of the pressure membrane associated with the formation of inner corner radii.
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patent: 4292101 (1981-09-01), Reichert
patent: 4565595 (1986-01-01), Whitener
patent: 4662587 (1987-05-01), Whitener
Boustead Terry M.
Folts Robert L.
Sepe George N.
Simkulak Richard J.
Durkin II Jeremiah F.
United Technologies Corporation
Woo Jay H.
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