Global Patent Index - EP 0887122 A3

EP 0887122 A3 2000-01-12 - High pressure water cleaning device

Title (en)

High pressure water cleaning device

Title (de)

Wasser-Hochdruckreinigungsgerät

Title (fr)

Dispositif de nettoyage à l'eau sous haute pression

Publication

EP 0887122 A3 (DE)

Application

EP 98102583 A

Priority

DE 19726794 A

Abstract (en)

[origin: EP0887122A2] The cleaning appliance has a high pressure pump (8) with a drive unit (6), and is formed as a gear pump with an internally toothed gear ring (9), and externally toothed pinion (10) having a different number of teeth. Parts of the pump coming into contact with the cleaning water consist of a corrosion-proof material, especially a metal compound. The gear ring and pinion preferably consist of material having sufficient surface hardness in water and good sliding characteristics, and are preferably of a sintered material. This material preferably has a plasma-nitride-treated surface.

IPC 1-7

B08B 3/02; F04C 2/10; F04C 13/00; F04C 15/00

IPC 8 full level

B08B 3/02 (2006.01); F04C 2/08 (2006.01)

CPC

B08B 3/026 (2013.01); F04C 2/082 (2013.01); F04C 2230/22 (2013.01); F04C 2230/92 (2013.01); F05C 2203/08 (2013.01); F05C 2253/04 (2013.01)

Citation (search report)

DCS

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

DOCDB simple family

EP 0887122 A2 19981230; EP 0887122 A3 20000112; DE 19726794 A1 19990107