Cleaning and liquid contact with solids – Apparatus – Electrically controlled
Reexamination Certificate
2006-08-01
2006-08-01
Perrin, Joseph L. (Department: 1746)
Cleaning and liquid contact with solids
Apparatus
Electrically controlled
C134S16800C, C134S174000, C134S178000, C134S180000, C166S223000
Reexamination Certificate
active
07082952
ABSTRACT:
A well-cleaning system (10) is provided with a control system (30) where waste liquid level sensors (35, 36) co-operate with timers (39, 40) to control the frequency and duration of the well-cleaning cycles. Chemicals can be injected into the water on demand from a well-conditioning sensor (38); and the well-cleaning system (10) can be operated when high H2S gas levels are detected in the well (20) by a H2S gas sensor (37).
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Derwent Abstract Accession No. 97-487122/45, JP 09-228427 A (Matsuishita Seiko KK) Sep. 2, 1997.
Derwent Abstract Accession No. 1999-564287/48, JP 11-243780 A (With Jpaan KK) Sep. 14, 1999.
Jobberns David A
McCasker Douglas B
Hudak, Shunk & Farine Co. LPA
McBerns Pty LTD
Perrin Joseph L.
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