Plastic article or earthenware shaping or treating: apparatus – Preform reshaping or resizing means: or vulcanizing means... – Including shaping means comprising fluid pressure contacting...
Patent
1979-09-21
1981-06-02
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Preform reshaping or resizing means: or vulcanizing means...
Including shaping means comprising fluid pressure contacting...
264554, 264316, 264 16, 425384, 425389, B29C 1704
Patent
active
042708923
ABSTRACT:
Method and apparatus for manufacturing laminant veneers for application to the teeth of a dental patient. The method involves heat and fluid pressure induced forming of a dental laminant veneer to cause the veneer to assume the configuration of a standard mold or a model mold of a dental patient's teeth. The apparatus includes a heat chamber and means to move the dental veneers and mold and the heat chamber into interrelation to cause heat softening of the veneers. A flexible membrane is pressure induced by vacuum or positive pressure and causes the softened veneers to assume the configuration of the mold.
REFERENCES:
patent: 3334383 (1967-08-01), Irvine
patent: 3404056 (1968-10-01), Baldwin
patent: 3600752 (1971-08-01), Kopp
patent: 3682571 (1972-08-01), Greenberg et al.
patent: 4034054 (1977-07-01), Sauer
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