EP 1532366 B1 20051026 - PUMP FOR A HIGH-PRESSURE CLEANING DEVICE
Title (en)
PUMP FOR A HIGH-PRESSURE CLEANING DEVICE
Title (de)
PUMPE FÜR EIN HOCHDRUCKREINIGUNGSGERÄT
Title (fr)
POMPE POUR APPAREIL DE NETTOYAGE HAUTE PRESSION
Publication
Application
Priority
- DE 10239943 A 20020830
- EP 0308875 W 20030809
Abstract (en)
[origin: WO2004025123A1] The invention relates to a pump for a high-pressure cleaning device, comprising: at least one reciprocatingly driven piston that protrudes into a pump chamber of a pump case and into a drive chamber of the pump case; a high-pressure seal that rests against the periphery of the piston while being located in the area in which the piston enters the pump chamber; an oil seal that rests against the periphery of the piston while being located in the area in which the piston enters the drive chamber, and; a collecting chamber, which surrounds the piston between the high-pressure seal and the oil seal and which is provided for collecting liquid exiting the pump chamber while flowing past the high-pressure seal. The aim of the invention is to prevent this liquid from entering the drive chamber. To this end, the invention provides that the piston has at least one peripheral groove in the area between the high-pressure seal and the oil seal and that the high-pressure seal and the oil seal are located far enough apart so that the peripheral groove or the peripheral grooves neither reach the high-pressure seal nor the oil seal during the reciprocating motion of the piston.
IPC 1-7
IPC 8 full level
F04B 1/12 (2006.01); F04B 1/14 (2006.01); F04B 53/16 (2006.01)
CPC (source: EP)
F04B 1/126 (2013.01); F04B 1/141 (2013.01); F04B 53/164 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004025123 A1 20040325; AT E307977 T1 20051115; AU 2003263207 A1 20040430; DE 10239943 C1 20031030; DE 50301519 D1 20051201; EP 1532366 A1 20050525; EP 1532366 B1 20051026
DOCDB simple family (application)
EP 0308875 W 20030809; AT 03794866 T 20030809; AU 2003263207 A 20030809; DE 10239943 A 20020830; DE 50301519 T 20030809; EP 03794866 A 20030809