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US 4,353,846 AGranted
Filter assembly for evaporative cooler pumps
OwnerDouglas W. Mehrens, James F. Kucharinventors
Life of this patent
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Abstract
An improved water filter assembly for use with an evaporative cooler pump, the filter comprising a cylindrical filter wall, a closed base and a neoprene curtain that covers the top but opens to receive the pump impeller.
Claims6
A filter assembly for a pump comprising:
- a cylindrical housing open at one end with the cylindrical side of said housing being formed of an open mesh material,
- a filter pad mounted within said housing juxtapositioned to the inside periphery of said housing, and
- cover means for the open end of said housing,
- said cover means defining an opening extending through a resilient portion thereof which is distortable when an impeller blade and its shaft is forced therethrough, but which assumes a substantially closed relaxed position sequentially thereafter.
1 more element
Dependencies are inferred from the claim text.