Riser sleeve with breaker core

Details Riser sleeve with breaker core Riser sleeve with breaker core

1992-10-02

1994-04-05

Bradley, Paula A.

Metal founding

Means to shape metallic material

United particle type shaping surface

249197, B22C 900

Patent

active

052996255

ABSTRACT:
A riser sleeve with a breaker core comprises a sectionally V-shaped riser sleeve having a bottom opening and a breaker core having a central opening and attached to the bottom of the riser sleeve. The inner diameter D.sub.3 of the central opening of the neck-down core is substantially the same as the inner diameter D.sub.2 of the bottom opening of the riser sleeve, and the outer diameter D.sub.5 of breaker core is substantially the same as or larger than the outer diameter D.sub.4 of the bottom of the riser sleeve. The riser sleeve with breaker core greatly reduces the amount of finishing that the cast product requires after casting.

REFERENCES:
patent: 4141406 (1979-02-01), Wukovich
patent: 4188010 (1980-02-01), Reiland
patent: 4574869 (1986-03-01), Trinkl

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