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US 3,946,095 AGranted
Method of restoring the shape of a flexible-shell model
AssigneeCarnation Company
InventorPaul J. Dziulak
Life of this patent
Estimating the term…
Abstract
A method of restoring the shape of an anatomical model comprising placing mold inserts in the undercut portions of the model, charging the model with a foaming thermosetting plastic, and enclosing the model and mold inserts in a fixture. As the foaming thermosetting plastic expands, the model is pressed against the inserts and the fixture causing the model to assume the shape of the fixture and inserts.
Claims10
A method of restoring the shape of a flexible-shell model having undercut portions comprising:
- positioning inserts having a fixed standard shape in the undercut portions of the flexible-shell model;
- charging the flexible-shell model with a measured amount of a foamable thermosetting plastic;
- enclosing the flexible-shell model and associated inserts in a fixture configured to resist internal pressure and maintain a fixed standard shape;
- foaming and curing the foamable thermosetting plastic in the flexible-shell model while the flexible-shell model is enclosed in the fixture and is forced outward by the foaming thermosetting plastic against the fixed standard shape of the fixture and the inserts.
1 more element
Dependencies are inferred from the claim text.