Method for controlling several pumps

Details Method for controlling several pumps Method for controlling several pumps

2007-03-27

2007-03-27

Stashick, Anthony D. (Department: 3746)

Pumps

Processes

Reexamination Certificate

active

10646241

ABSTRACT:
The invention relates to a method for controlling several pumps in a pump sump, with which each pump comprises a switch which switches on the pump and each pump after its running is first blocked and depending on the running of the further pumps in the pump sump is released again. The invention further relates to a pump for carrying out this method.

REFERENCES:
patent: 3741683 (1973-06-01), McTamaney et al.
patent: 3744932 (1973-07-01), Prevett
patent: 4222711 (1980-09-01), Mayer
patent: 4437811 (1984-03-01), Iwata et al.
patent: 5449274 (1995-09-01), Kochan, Jr.
patent: 199 27 365 (2000-02-01), None
patent: 1 216 736 (2002-06-01), None
patent: 06241191 (1994-08-01), None

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