Inner mold for molding cylinder

Details Inner mold for molding cylinder Inner mold for molding cylinder

1987-07-09

1988-05-31

Hoag, Willard

Static molds

Core

Of plural sections

164369, 425468, B29C 3932

Patent

active

047475730

ABSTRACT:
An inner mold for molding a cylinder having a bore-forming core for forming a cylinder bore, and a shell core for forming a recess in the cylinder that can serve as, for instance, a scavenging passage. Holes are formed in the bore-forming core for allowing the shell core to fittingly engage with the bore-forming core, and the bottom surfaces of each of the holes are arcuately concaved.

REFERENCES:
patent: 1931587 (1933-10-01), McConnel
patent: 3044127 (1962-07-01), Alden

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