Gate

Details Gate Gate

1985-09-09

1987-06-30

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

164244, 164246, 164DIG4, 433206, B22C 904

Patent

active

046762949

ABSTRACT:
Gate is a wax structure for forming part of a wax master in investment casting of a dental prosthesis. The gate has a square feeder with a circular disc on each end. The square feeder reduces the cracking stresses between adjacent feeders to reduce unwanted fins, and the square shape aids in final cutoff of the cast prosthetic. In the wax master, one of the discs is secured to the prosthetic form and the other disc to the conventional reservoir bar. The disc shape aids in filleting to the form and bar.

REFERENCES:
patent: 1543229 (1925-06-01), Nichols
patent: 3320658 (1967-05-01), Bolda et al.
patent: 3604496 (1971-09-01), Grosjean
patent: 3970138 (1976-07-01), Buhrer
patent: 4109699 (1978-08-01), Miller et al.
patent: 4356859 (1982-11-01), Savage
patent: 4396054 (1983-08-01), Cole

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