Patent EP0215616A2 successfully refreshed from Google Patents.
EP0215616A2
Expired / Lapsed
EP
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Method of joining foam patterns for evaporative casting process
Assignee: Ford-Werke GmbH
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Filing: 1986-09-05
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Granted: —
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Expires: 2006-09-05
Abstract
Abstract A comsumable foam pattern assembly is disclosed for use in the evaporation pattern metal casting process; also disclosed is the method for making such complex foam pattern assemblage. The pattern assembly (40) is comprised of: (a) mating first and second clamshell-shaped foam members (41, 42), the first and second foam members meeting along exteriorly exposed joint margins (44a, 44b, 45a, 45b) defined by mateable surfaces extending along opposite sides of each of the members; (b) at least one other foam member (43) nestable totally within the mated assembly of the first and second members (41, 42) and nestable without joint margins exposed to the exterior of the mated assembly; (c) surface means (52) 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.
Inventors
- 👤 Robert Anthony Martin
- 👤 Thomas John Heater
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 20:17
CPC Classifications
B; B22; B22C; B22C7/00; B22C7/02; B22C7/023; B22C7/026; B29; B29C; B29C65/00; B29C65/02; B29C65/40; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C66/00; B29C66/01; B29C66/05; B29C66/301; B29C66/50; B29C66/51; B29C66/54; B29C66/547; B29C66/5472; B29C66/54721; B29C66/70; B29C66/72; B29C66/727; B29C66/71; B29K; B29K2105/00; B29K2105/04; B29L; B29L2031/00; B29L2031/757
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
128 words
A complex consumable foam pattern assembly for use in the evaporative pattern metal casting process, comprising mating first and second clamshell-shaped foam members (41,42), said first and second foam members meeting along exteriorly exposed joint margins (44a,44b,45a,45b) defined by mateable surfaces extending along opposite sides of each of said members, at least one other foam member (43) nestable totally within the mated assembly of said first and second members (41,42) and nestable without joint margins exposed to the exterior of said assembly, surface means (52) enclosed within said mater assembly for piloting said first, second and other members (41,42,45) into mating relationship and adhesive means bonding said first and other members (41,42) together and said second member (42) to the assembly of said first and other member (41,43).
Claim 2
Dependent Claim
128 words
A complex consumable foam pattern assembly for use in the evaporative pattern metal casting process, comprising mating first and second clamshell-shaped foam members (41,42), said first and second foam members meeting along exteriorly exposed joint margins (44a,44b,45a,45b) defined by mateable surfaces extending along opposite sides of each of said members, at least one other foam member (43) nestable totally within the mated assembly of said first and second members (41,42) and nestable without joint margins exposed to the exterior of said assembly, surface means (52) enclosed within said mater assembly for piloting said first, second and other members (41,42,45) into mating relationship and adhesive means bonding said first and other members (41,42) together and said second member (42) to the assembly of said first and other member (41,43).
Claim 3
Dependent Claim
57 words
A pattern assembly as claimed in Claim 1, in which said surfaces means for piloting comprises (a) interiorly disposed first pilot surfaces on said first and other member effective to constitute a double-ply foam wall when mated, and (b) interiorly disposed second pilot surfaces on said second and other member effective to constitute a double-ply foam wall.
Claim 4
Dependent Claim
39 words
A pattern assembly as claimed in Claim 1 or 2, in which said surface means for piloting additionally comprises stop means to limit movement of said first pilot surfaces in a first direction along said mating first pilot surfaces.
Claim 5
Dependent Claim
29 words
A pattern assembly as claimed in Claim 2, in which said interiorly disposed first pilot surfaces additionally comprise mating first wedging surfaces to accurately align said first pilot surfaces.
Claim 6
Dependent Claim
42 words
A pattern assembly as claimed in Claim 3, in which said surface means for piloting additionally comprises first stop shoulders to limit movement of said first pilot surfaces in a direction along said first pilot surfaces and transverse to said first direction.
Claim 7
Dependent Claim
33 words
A pattern assembly as claimed in Claim 2, in which said second pilot surfaces have second stop means to limit movement of said second pilot surfaces in direction along said second pilot surfaces.
Claim 8
Dependent Claim
52 words
A pattern assembly as claimed in Claim 6, in which said second pilot surfaces addtionally comprise mating second wedging surfaces which mate by movement in preferred direction to accurately align said second pilot surfaces, and mateable third wedging surfaces which, when mated, move together in a direction transverse to said preferred direction.
Claim 9
Dependent Claim
34 words
A pattern assembly as claimed in Claim 7, in which said second pilot surfaces have second stop shoulders to limit movement of said second pilot surfaces in either of said preferred or transverse direction.
Claim 10
Dependent Claim
28 words
A pattern assembly as claimed in Claim 1, in which said pattern members are made of a material selected from the group consisting of polystyrene, polyurethane, and polyethylene.
Claim 11
Independent Claim
203 words
A method of assembling foam pattern segments into a unitary assembly, comprising: (a) molding first, second and third consumable foam pattern segments, said first and second pattern segments being mateable and effective to meet along exteriorly disposed joint margins defined by mateable surfaces extending along opposite sides of each of said first and second segments, and a third pattern segment nestable totally within the assembly of said first and second segments and nestable without joint margins exposed to the exterior of the mated assembly, said first' and third segments being molded with interiorly disposed pilot surfaces effective to constitute a double-ply foam wall when mated, said first and third segments being molded with interiorly disposed second pilot surfaces effective to constitute a double-ply foam wall when mated, said pilot surfaces also having stop means to limit movement of the pilot surfaces; . (b) mating said first segment with said third segment by moving said first pilot surfaces together along the plane of said surfaces until said stop means is bottomed out; and (c) mating said second segment with the assembly of said third and first segments by moving said second member along said second pilot surfaces until said stop means is bottomed out.
Claim 12
Independent Claim
203 words
A method of assembling foam pattern segments into a unitary assembly, comprising: (a) molding first, second and third consumable foam pattern segments, said first and second pattern segments being mateable and effective to meet along exteriorly disposed joint margins defined by mateable surfaces extending along opposite sides of each of said first and second segments, and a third pattern segment nestable totally within the assembly of said first and second segments and nestable without joint margins exposed to the exterior of the mated assembly, said first' and third segments being molded with interiorly disposed pilot surfaces effective to constitute a double-ply foam wall when mated, said first and third segments being molded with interiorly disposed second pilot surfaces effective to constitute a double-ply foam wall when mated, said pilot surfaces also having stop means to limit movement of the pilot surfaces; . (b) mating said first segment with said third segment by moving said first pilot surfaces together along the plane of said surfaces until said stop means is bottomed out; and (c) mating said second segment with the assembly of said third and first segments by moving said second member along said second pilot surfaces until said stop means is bottomed out.
Claim 13
Dependent Claim
21 words
A method as claimed in Claim 10, in which prior to step (b), liquid adhesive is applied to said joint margins.
References Cited (Backward Citations)
No citation records indexed.
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