Global patent index - EP 0973621 A1

EP 0973621 A1 2000-01-26 - MAKING HEAT-EXCHANGING CAST METAL FORMING TOOL

Title (en)

MAKING HEAT-EXCHANGING CAST METAL FORMING TOOL

Title (de)

HERSTELLUNG EINES WÄRMETAUSCHENDEN GIESSMETALLFORMWERKZEUGES

Title (fr)

PRODUCTION D'UN OUTIL DE FORMAGE A ECHANGE THERMIQUE POUR METAL COULE

Publication

EP 0973621 A1 (EN)

Application

EP 98910478 A

Priority

  • US 9805294 W
  • US 32803897 A

Abstract (en)

[origin: WO9841340A1] A one-piece cast metal heat-exchanging forming tool (10) is prepared using an expendable porous preform (34) that is cast in place within a cast metal forming tool. The expendable preform is thereafter extracted to leave behind a network of inter-connected pores and passages (32) within the body of the tool through which a heat transferring fluid may be circulated to transfer heat to or from a subtantially non-porous contoured shaping surface of the tool. Fluid distribution/collection lines and vacuum lines (26, 28) may be incorporated in the tool during casting.

IPC 1-7 (main, further and additional classification)

B22C 7/02; B22D 18/04; B22D 19/00; B22D 27/04; B22D 29/00

IPC 8 full level (invention and additional information)

B22C 7/02 (2006.01); B22C 9/10 (2006.01); B22D 18/04 (2006.01); B22D 19/00 (2006.01); B22D 19/06 (2006.01)

CPC (invention and additional information)

B22C 7/023 (2013.01); B22D 18/04 (2013.01); B22D 19/00 (2013.01)

Citation (search report)

See references of WO 9841340A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 9841340 A1 19980924; CA 2284609 A1 19980924; EP 0973621 A1 20000126; JP 2002515831 A 20020528

INPADOC legal status

2004-04-28 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20031002

2000-01-26 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19990921

2000-01-26 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE