EP 2825836 A1 20150121 - CLEANING AND MAINTAINING THE INNER SURFACE OF A PIPE
Title (en)
CLEANING AND MAINTAINING THE INNER SURFACE OF A PIPE
Title (de)
REINIGUNG UND PFLEGE DER INNENFLÄCHE EINES ROHRES
Title (fr)
NETTOYAGE ET ENTRETIEN DE LA SURFACE INTERNE D'UN TUYAU
Publication
Application
Priority
- EP 12159702 A 20120315
- EP 2013054860 W 20130311
- EP 13712709 A 20130311
Abstract (en)
[origin: WO2013135622A1] In a method for cleaning and maintaining the inner surface (14) of a pipe (16), a) a maintaining element (6) of a maintaining device (2) is applied to the inner surface (14) in a frictionally-engaged manner with a friction force (FR) and b) cyclically: I) a fixing element (8) is applied to the inner surface (14) in a frictionally-engaged manner with a fixing force (FF) greater than the friction force (FR), II) the maintaining element (6) moves in a desired maintaining direction (28), III) the fixing element (8) is lifted from the inner surface (14) so that the fixing element can be moved with a displacement force (FV) less than the friction force (FR), IV) the fixing element (8) moves in a desired displacement direction (29). A maintaining device (2) contains a maintaining element (6) that can be moved in the pipe (16) with a friction force (FR), a fixing element (8), which can be fixed in the pipe (16) with a fixing force (FF) and which can be lifted from the inner surface (14) so that the fixing element can be moved with a displacement force (FV), a fixing drive (10) for applying or lifting the fixing element (8), and a motion drive (12) for moving the maintaining element (6) and the fixing element (8) relative to one another.
IPC 8 full level
B08B 9/049 (2006.01); F41A 29/00 (2006.01)
CPC (source: EP)
B08B 9/049 (2013.01); B08B 9/0551 (2013.01); B08B 9/0558 (2013.01); B08B 9/057 (2013.01); F41A 29/00 (2013.01)
Citation (search report)
See references of WO 2013135622A1
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)
WO 2013135622 A1 20130919; EP 2825836 A1 20150121; EP 2825836 B1 20160518
DOCDB simple family (application)
EP 2013054860 W 20130311; EP 13712709 A 20130311