Protected seal for blow down platen

Details Protected seal for blow down platen Protected seal for blow down platen

1995-10-20

1997-10-21

Woo, Jay H.

Plastic article or earthenware shaping or treating: apparatus

Preform reshaping or resizing means: or vulcanizing means...

Including shaping means comprising fluid pressure contacting...

425389, 425390, 264510, 264512, 264544, B29C 3300, B29C 5110

Patent

active

056793880

ABSTRACT:
A blow down hydroforming apparatus for sheet material incorporates an hydraulically inflatable seal disposed between a platen and a table in circumscribing relationship with a cavity formed in the platen to maintain the pressure of gas in the cavity during forming of the sheet material.

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patent: 4886442 (1989-12-01), McCowin et al.
patent: 5108530 (1992-04-01), Niebling, Jr.

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