Pressure bag for tool core

Details Pressure bag for tool core Pressure bag for tool core

1993-09-20

1995-06-20

Ball, Michael W.

Plastic article or earthenware shaping or treating: apparatus

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

By fluid pressure actuated flexible diaphragm

4254051, 4254052, B29C 3300

Patent

active

054256283

ABSTRACT:
A tool core is disclosed for forming an opening in a composite structure. The composite structure comprises a structural core with inner and outer skins formed on a mandrel, sealed in an impervious fabric bag and cured at elevated temperature and pressure in an enclosed chamber. The tool core is formed by a tool core inner member of simi-rigid material enclosed in an inflatable elastic bag. The interior of the tool core bag is exposed to the elevated pressure of the closed chamber and therefor inflates during the curing process to conform the tool core precisely to the opening in the structural core.

REFERENCES:
patent: 3184528 (1965-05-01), Norwalk
patent: 4370120 (1983-01-01), Foster et al.
patent: 4702870 (1987-10-01), Setterholm et al.
patent: 4732415 (1988-03-01), Matia et al.
patent: 4876049 (1989-10-01), Aoyma et al.
patent: 5087193 (1992-02-01), Herbert
patent: 5127813 (1992-07-01), Omata et al.
patent: 5131834 (1992-07-01), Potter

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