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US 2004/0163372 A1Published application
Environmentally friendly air filter for an internal combustion engine
OwnerLedu Q. Nguyeninventor
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OwnerLedu Q. Nguyeninventor
Estimating the term…
The present invention involves an air filter that includes a filter medium having an inlet surface and an outlet surface, and a retaining screen made of a thermoplastic polymer that defines a plurality of apertures and is adjacent to and in communication with the outlet surface. A mold gasket maintains the retaining screen in fluid communication with the outlet surface. In another embodiment of air filter of the present invention, the air filter includes first and second end caps and the filter medium substantially extends between the first and second end caps. In this embodiment, the air filter includes at least one of an inner and an outer retaining screen, or both. The inner retaining screen defines a plurality of apertures and is adjacent to and in communication with the outlet surface, and the outer retaining screen defines a plurality of apertures and is adjacent to and in communication with the inlet surface. In this embodiment of the air filter of the present invention, at least one of the inner and outer retaining screens is made of a thermoplastic polymer.
An air filter comprising:
An air filter comprising:
A retaining screen adapted for use with an air filter, the air filter including a filter medium having an inlet and an outlet surface, the inlet surface defining multiple pleats and positioned upstream of the outlet surface, said retaining screen comprising:
A retaining structure adapted for use with an air filter, the air filter including first and second end caps and a filter medium substantially extending between the first and second end caps, the filter medium having an inlet and an outlet surface, the inlet surface defining multiple pleats and positioned upstream of the outlet surface, said retaining structure comprising:
Dependencies are inferred from the claim text.