Feeder sleeves

Details Feeder sleeves Feeder sleeves

1987-09-15

1988-10-25

Godici, Nicholas P.

Metal founding

Means to shape metallic material

United particle type shaping surface

164 53, 164360, 249197, B22C 908

Patent

active

047796693

ABSTRACT:
A feeder sleeve (1') for use in the casting of molten metal has a cavity (8) whose cross-sectional area at the bottom of the cavity (8) is greater than the cross-sectional area at the top of the cavity (8) such that a line joining a point (11.1) on the inner surface (11) of the sleeve at the bottom of the cavity (8) and the nearest point (11.2) on the inner surface (11) of the sleeve at the top of the cavity (8) is less than 80.degree. to the horizontal. The inner surface of the sleeve may taper from the bottom of the cavity to the top of the cavity uniformly or in at least one step (12).

REFERENCES:
patent: 1893206 (1933-01-01), Messler et al.
patent: 2612667 (1952-10-01), Gombosh
patent: 2745154 (1956-05-01), Lucien et al.
patent: 2821758 (1958-02-01), Vallak
patent: 3815665 (1974-06-01), Baur
patent: 4279400 (1981-07-01), Greenberg
patent: 4423762 (1984-01-01), Trinkl et al.
patent: 4467858 (1984-08-01), Trinkl et al.
patent: 4574869 (1986-03-01), Trinkl et al.
"Design Method for Tapered Riser Feeding of Ductile Iron Castings in Green Sand", R. W. Heine, AFS Transactions 82-20, pp. 147-158.
Foseco Leaflet FA 17/2 for "Kalminex S"; admitted prior art.

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