Parts washer system
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United States of America Patent
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Apr 22, 1997
Issued Date -
N/A
app pub date -
Apr 21, 1994
filing date -
Sep 3, 1993
priority date (Note) -
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Abstract
A system for removing free-oils, particulate matter and dissolved heavy metals from an aqueous surfactant solution employed in the degreasing and cleaning of parts in a parts washer. The system includes a primary filter assembly containing an oil absorbent, a particulate matter filter and a filter element having metal particles bound together in a porous metal sponge-like structure. The system can also include a secondary filter assembly capable of removing residual free, dissolved and emulsified oils, particulate matter and dissolved heavy metals from the filtrate produced by passage of the contaminated aqueous surfactant solution through the primary filter assembly.
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