Chemistry: electrical and wave energy – Processes and products
Patent
1988-10-11
1990-02-27
Silbaugh, Jan H.
Chemistry: electrical and wave energy
Processes and products
2041291, 249 54, 264 19, C25D 100
Patent
active
049043480
ABSTRACT:
Positive wax models are disposed on carriers in a casting frame so that the widest cross sections are in a common plane, vertical fitting pins are provided, and the frame is filled with silicone to the level of the plane to form a first model. The surface is then coated with silver, electroplated with copper, and reinforced with synthetic resin to form a first electrode, which is removed from the first model. The first model is likewise removed from the frame and oriented by means of the fitting pins in a casting frame filled with hardening carrier mass to the plane of the widest cross sections. The carriers and molding mass are then removed to form a second model. The surface of the second model is then coated with silver, electroplated with copper, and reinforced with synthetic resin to form a second electrode, which is removed from the second model. The electrodes are then used to erode respective opposite sides of an erosion body to form the spare parts.
REFERENCES:
patent: 3649474 (1972-03-01), Blakeslee et al.
patent: 3689729 (1972-09-01), Neward et al.
patent: 4169017 (1979-09-01), Burkey et al.
patent: 4734173 (1988-03-01), Walter et al.
"Herstellung einer Metallhulsenkrone aus Vollmaterial mit Hilfe der Funkenerosion", from Deutsche Zahnarztliche Z 41, 525-526 (1986).
Domes Anton
Horitzer Alfred
Fiorilla Christopher A.
Heraeus Edelmetalle GmbH
Silbaugh Jan H.
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