Liquid purification or separation – Structural installation – Closed circulating system
Reexamination Certificate
2008-08-27
2010-10-19
Prince, Fred (Department: 1797)
Liquid purification or separation
Structural installation
Closed circulating system
C210S315000, C210S416200, C210S477000
Reexamination Certificate
active
07815797
ABSTRACT:
A pre-filter assembly is for use in a skimmer of a residential swimming pool. The pre-filter comprises a skimmer collar and a cleanable filter basket. The skimmer collar is for placement on a rim of a below water surface opening within the skimmer. The cleanable filter basket is made of a water porous material. The filter basket is permanently secured at an edge defining the open-top to the skimmer collar. The filter basket further has a chevron shape for ease of use. Swimming water debris is trapped in the filter basket as pool water is pulled through the filter basket on its way to a primary filter apparatus. The filter basket is easily cleaned as needed and replaced.
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Prince Fred
Wilson Charles R.
Zone Filtration, Inc.
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