Evaporable foam pattern for use in casting a metal engine block

Details Evaporable foam pattern for use in casting a metal engine block Evaporable foam pattern for use in casting a metal engine block

1990-10-18

1992-02-18

Lin, Kuang Y.

Metal founding

Means to shape a forming surface

Pattern

164 34, 164 45, B22C 904

Patent

active

050885456

ABSTRACT:
An evaporable foam pattern for casting a metal block for a two-cycle engine. The pattern includes a first pattern section formed of a polymeric material and defining at least one cylinder. The first pattern section has a plurality of elongated slots each of which extends through the section and communicate with a cylinder. Each slot is bordered by an external planar surface. The pattern also includes a group of second pattern sections each formed of polymeric material and having an inner portion extending within a slot and having a peripheral flange disposed in abutting relation with the surface bordering the slot. The abutting surfaces are joined together by an adhesive.

REFERENCES:
patent: 4632169 (1986-12-01), Osborn et al.
patent: 4640333 (1987-02-01), Martin et al.
patent: 4657063 (1987-04-01), Morris
patent: 4777997 (1988-10-01), Corbett
patent: 4802447 (1989-01-01), Corbett
patent: 4883110 (1989-11-01), Morgan et al.
patent: 4907638 (1990-03-01), Hubbell et al.
patent: 4951733 (1990-08-01), Kusche et al.
"Evaporative Foam Casting Technology II Program", Nov. 1986.

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