EP 3533532 A1 20190904 - A CORE FOR AN INVESTMENT CASTING PROCESS
Title (en)
A CORE FOR AN INVESTMENT CASTING PROCESS
Title (de)
KERN FÜR EIN FEINGUSSVERFAHREN
Title (fr)
NOYAU POUR UN PROCESSUS DE COULÉE DE PRÉCISION
Publication
Application
Priority
GB 201803326 A 20180301
Abstract (en)
A core (400) for an investment casting process in which a component to be cast has an internal passageway, the internal passageway being provided by the core (400), the core (400) comprising: a first core passage (401) having a first point (405) and a second point (406) therein and including no straight path between the first point (405) and the second point (406); and a first core bridge (421a) which extends away from the first core passage (401) between the first and second points (405, 406), wherein the first core bridge (421a) comprises a first pillar (422) and a second pillar (412a) which connect to the first and second points (405, 406) respectively, and a bridge portion (423a) which extends between the first and second pillars (422, 412a); wherein the first pillar (422) comprises a core inlet portion (408) having a thickness at the first point (405) and the second pillar (412a) has a thickness at the second point (406), the thickness of the core inlet portion (408) at the first point (405) being less than the thickness of the second pillar (412a) at the second point (406).
IPC 8 full level
B22C 9/04 (2006.01); B22C 9/10 (2006.01); B22C 9/24 (2006.01); F01D 11/08 (2006.01)
CPC (source: EP US)
B22C 9/04 (2013.01 - EP US); B22C 9/10 (2013.01 - EP US); B22C 9/106 (2013.01 - EP US); B22C 9/24 (2013.01 - EP US); B22D 25/02 (2013.01 - US); F01D 11/122 (2013.01 - US); F23R 3/005 (2013.01 - US); F23R 3/007 (2013.01 - US); F01D 11/08 (2013.01 - EP); F05D 2230/211 (2013.01 - EP US); F05D 2240/11 (2013.01 - EP US); F05D 2260/204 (2013.01 - EP US)
Citation (search report)
- [XI] US 2016256919 A1 20160908 - JONES SIMON LLOYD [GB], et al
- [XI] EP 1905958 A2 20080402 - UNITED TECHNOLOGIES CORP [US]
- [XI] EP 1886745 A1 20080213 - UNITED TECHNOLOGIES CORP [US]
- [XI] EP 3246533 A1 20171122 - UNITED TECHNOLOGIES CORP [US]
- [XI] US 2007237647 A1 20071011 - BULGRIN CHARLES A [US], et al
- [XI] US 2016169016 A1 20160616 - BLANEY KEN F [US], et al
- [XI] US 6340047 B1 20020122 - FREY DAVID A [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3533532 A1 20190904; GB 201803326 D0 20180418; US 2019270132 A1 20190905
DOCDB simple family (application)
EP 19155458 A 20190205; GB 201803326 A 20180301; US 201916268008 A 20190205