EP 0855951 B1 20040421 - A COLLAPSIBLE CORE
Title (en)
A COLLAPSIBLE CORE
Title (de)
ZUSAMMENKLAPPBARER KERN
Title (fr)
NOYAU COMPRESSIBLE
Publication
Application
Priority
- DK 9600441 W 19961015
- DK 116595 A 19951016
Abstract (en)
[origin: WO9714544A1] A collapsible core for casting e.g. tubular well articles, comprising an annular shell (1) which substantially forms a pipe having a longitudinal axis extending between the ends of the pipe, said shell (1) being flexurally flexible about the longitudinal axis of the pipe. According to the invention, the shell (1) has at least two first areas separated by at least one second area (A), said areas extending between the ends of the pipe, said second area (A) having a flexural flexibility about the longitudinal axis of the pipe which is smaller than the corresponding flexural flexibility in the two first areas. This ensures that the collapsible core has a relatively high degree of collapse, while having an extremely stable shape.
IPC 1-7
IPC 8 full level
B28B 21/88 (2006.01)
CPC (source: EP)
B28B 21/88 (2013.01)
Designated contracting state (EPC)
AT DE GB
DOCDB simple family (publication)
WO 9714544 A1 19970424; AT E264736 T1 20040515; AU 7279596 A 19970507; DE 69632260 D1 20040527; DE 69632260 T2 20050623; DK 116595 A 19970417; DK 173581 B1 20010326; EP 0855951 A1 19980805; EP 0855951 B1 20040421
DOCDB simple family (application)
DK 9600441 W 19961015; AT 96934445 T 19961015; AU 7279596 A 19961015; DE 69632260 T 19961015; DK 116595 A 19951016; EP 96934445 A 19961015