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 (main, further and additional classification)

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

IPC 8 full level (invention and additional information)

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

CPC (invention and additional information)

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)

Designated contracting state (EPC)

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

EPO simple patent family

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

INPADOC legal status


2001-04-18 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20000713

2000-10-26 [REG DE 8566] DESIGNATED COUNTRY DE NOT LONGER VALID

2000-09-20 [AKX] PAYMENT OF DESIGNATION FEES

2000-01-12 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2000-01-12 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI

2000-01-12 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7B 08B 3/02 A, 7F 04C 15/00 B, 7F 04C 13/00 B, 7F 04C 2/10 B

1998-12-30 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

1998-12-30 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI