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Current content: 159 515 718 patent documents

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154 531 new documents added

1 078 520 documents amended

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EP 0280648 B1 19910130 - CLEANING DEVICE FOR SEWAGE TREATMENT BASINS

Title (en)

CLEANING DEVICE FOR SEWAGE TREATMENT BASINS

Publication

EP 0280648 B1 19910130 (DE)

Application

EP 88810055 A 19880201

Priority

CH 70087 A 19870224

Abstract (en)

[origin: EP0280648A1] Mounted on the stand pipe (11) of the injector (7) of a suction pump (5) in a sewage treatment basin (3) is a three-way valve (15) through which service water is fed through the stand pipe (11) into the injector (7) instead of, or together with, air if the level of the water in the basin (1) falls below a minimum value (h2). <IMAGE>

IPC 1-7

B08B 9/08; E03F 5/10

IPC 8 full level

B08B 9/08 (2006.01); B08B 9/093 (2006.01); E03F 5/10 (2006.01)

CPC (source: EP)

B08B 9/0933 (2013.01); E03F 5/105 (2013.01)

Designated contracting state (EPC)

AT CH DE FR LI

DOCDB simple family (publication)

EP 0280648 A1 19880831; EP 0280648 B1 19910130; AT E60529 T1 19910215; DE 3861685 D1 19910307

DOCDB simple family (application)

EP 88810055 A 19880201; AT 88810055 T 19880201; DE 3861685 T 19880201