EP 0427454 A2 19910515 - Auger cleaner.
Title (en)
Auger cleaner.
Title (de)
Reiniger für Schneckenbohrer.
Title (fr)
Dispositif de nettoyage pour tarière.
Publication
Application
Priority
- GB 8925391 A 19891110
- GB 9001455 A 19900122
Abstract (en)
The invention provides a scraper blade (1) for an auger cleaner (A), said scraper blade being interposable between flights (3) of an auger; the invention is characterised in that the scraper blade (1) has a helical shape extending from its cutting edge, said helical shape having an angle to its intended axis which generally conforms to, or is greater than, the angle of attack of the flights of the auger with which it is intended to be used. The scraper in accordance with the present invention is preferably provided with a rotary body (4) provided with a discharge aperture (5), which body is rotatable relative to the auger axis by means of drive means (7, 8), thereby to urge the scraper into cutting relationship with spoil or debris disposed upon the auger flights (3). The arrangement requires less power than has previously been required in cleaners of this type and is much less prone to jamming in severe conditions.
IPC 1-7
IPC 8 full level
E21B 12/06 (2006.01)
CPC (source: EP)
E21B 12/06 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0427454 A2 19910515; EP 0427454 A3 19911016; EP 0427454 B1 19930804; DE 69002583 D1 19930909; DE 69002583 T2 19931125
DOCDB simple family (application)
EP 90311949 A 19901101; DE 69002583 T 19901101