B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/144
B22C 7/00 (2006.01) B22C 7/02 (2006.01) B29C 65/40 (2006.01) B29C 65/48 (2006.01)
Patent
CA 1244217
-17- Abstract A consumable foam pattern assembly is disclosed for use in the evaporative pattern metal casting process; also disclosed is the method for making such complex foam pattern assemblage. The pattern assembly is comprised of: (a) mating first and second clamshell-shaped foam members, the first and second foam members meeting along exteriorly exposed joint margins defined by mateable surfaces extending along opposite sides of each of the members; (b) at least one other foam member nestable totally within the mated assembly of the first and second members and nestable without joint margins exposed to the exterior of the mated assembly; (c) surface means enclosed within the mated assembly for piloting the first, second and other member into mating relationship; and (d) adhesive means bonding the first and other members together and bonding the second member to the assembly of the first and other member. The exterior joint of the assembly is reduced linearly by about at least 20% compared to the assembly where all the pattern parts have surfaces exposed to the exterior of said assembly.
512683
Heater Thomas J.
Martin Robert A.
Ford Motor Company Of Canada Limited
Sim & Mcburney
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