EP 1774062 B1 20100825 - SCRAPER FOR A CRUST BREAKER OF AN ALUMINIUM REDUCTION CELL
Title (en)
SCRAPER FOR A CRUST BREAKER OF AN ALUMINIUM REDUCTION CELL
Title (de)
ABSTREIFER FÜR EINEN BOHRKUGEL ZUM BOHREN DER BADKRUSTE IN EINER ALUMINIUM-REDUKTIONSZELLE
Title (fr)
RACLEUR D'UN ORGANE DE PERCAGE D'UNE CROUTE DE BAIN D'UNE CELLULE D'ELECTROLYSE DESTINÉE À LA PRODUCTION D'ALUMINIUM
Publication
Application
Priority
- FR 2005001573 W 20050622
- FR 0406953 A 20040625
Abstract (en)
[origin: WO2006010818A2] The invention concerns a scraper (40) for a drilling member (33) such as a taper, for forming an opening in a crust of alumina and of a solidified igneous electrolytic solution by a reciprocating movement along an axis of translation T. The inventive scraper (40) is characterized in that it comprises a plurality of fingers (42) arranged about an axis of reference S designed to merge with said axis of translation T in use, so as to clear a space (44) between the fingers and the drilling member, and in that each finger (42) includes at least a scraping member (43) projecting towards the drilling member (33). The inventive scraper eliminates formation of an envelope at the surface of the drilling member which can block the member in the scraper.
IPC 8 full level
C25C 3/14 (2006.01)
CPC (source: EP US)
C25C 3/14 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
FR 2872176 A1 20051230; FR 2872176 B1 20060728; AR 052761 A1 20070404; AT E478979 T1 20100915; AU 2005266290 A1 20060202; AU 2005266290 B2 20091224; CA 2570550 A1 20060202; CN 100567579 C 20091209; CN 1977069 A 20070606; DE 602005023169 D1 20101007; EP 1774062 A2 20070418; EP 1774062 B1 20100825; US 2007246347 A1 20071025; WO 2006010818 A2 20060202; WO 2006010818 A3 20061005; ZA 200700135 B 20080625
DOCDB simple family (application)
FR 0406953 A 20040625; AR P050102095 A 20050520; AT 05778797 T 20050622; AU 2005266290 A 20050622; CA 2570550 A 20050622; CN 200580021263 A 20050622; DE 602005023169 T 20050622; EP 05778797 A 20050622; FR 2005001573 W 20050622; US 57113205 A 20050622; ZA 200700135 A 20050622