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1. WO1986000215 - PROSTHESIS RESTORATION MOLDING APPARATUS

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]

WHAT IS CLAIMED IS:

1. A prosthesis restoration molding apparatus comprising at least two gates connected to each other and spaced from each other; and
a web connected to said gates to close all
openings between said gates.
2. The prosthesis restoration molding apparatus of Claim 1 wherein said web has a lesser thickness than said gates.
3. The prosthesis restoration molding apparatus of Claim 2 wherein said web is less than half the
thickness of said gates.
4. The prosthesis restoration molding apparatus of Claims 1, 2 or 3, wherein said at least two gates are first and second divergent gates connected to each other and connected to a sprue at their adjacent ends, and there is a third gate connected between said first and second gates adjacent their divergent ends, said web being attached to all three of said gates to close all openings between said gates to hold said third gate and any prosthesis attached thereto in place during the placement of molding compound therearound.
5. The prosthesis restoration molding apparatus of Claim 4 wherein said gates and said web are made of wax to serve as a wax master gate structure in the lost wax molding process, and, wherein a wax master of a dental prosthesis is mounted on said third gate.
6. The prosthesis restoration molding apparatus of Claim 1 wherein said gates are of circular cross section and said web is positioned to prevent the molding material from wrapping around said gates to preclude substantial forces on said gates from said molding material.
7. The prosthesis restoration molding apparatus of Claim 1 wherein said gates are of substantially the same diameter and are of substantially uniform diameter and said web is less than about half the diameter of said gates.