Metal founding – Miscellaneous – apparatus
Patent
1992-11-25
1994-11-01
Bradley, P. Austin
Metal founding
Miscellaneous, apparatus
164DIG4, B22C 904, B22C 702
Patent
active
053600525
ABSTRACT:
The subject matter of the invention is a casting ring former for forming molds for dental prosthesis products, such as artificial teeth, dental bridges, etc. The casting ring former according to the invention, which represents an improvement with regard to the casting cuvettes known so far is characterized in that they are removed from the mold prior to heat treatment, solves the given technical problem through the use of a specially formed base which may be provided with two nipple-shaped protuberances and two oppositely lying bulges according to a first variant, or up to three pairs of nipple-shaped protuberances and oppositely lying bulges according to a second variant, where in the base thus formed an undulate tape is placed and removed after the mold has cooled and the mold is taken off the base.
REFERENCES:
patent: 3196777 (1965-07-01), Luker
patent: 4777996 (1988-10-01), Finelt
patent: 4825934 (1989-05-01), Kai
patent: 5183095 (1993-02-01), Sullivan
Tomic Aleksander
Zaiaznik Stefan
Bradley P. Austin
Dubno Herbert
Puknys Erik R.
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