Multistage micronic in-line after-air filter
OwnerDonald W. Percyinventor
Life of this patent
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Abstract
An in-line after-air filter is disclosed for optimal filtration of a maximum volume of air flowing to the engine. A multiple filter system comprising discrete abutting reticulated foam filter elements of different porosity impregnated with a petroleum-based agent trap air contaminants as the air flows from the primary filter to the engine manifold. An air expansion coupling, flared air inlet port and an air diffuser allow maximum air flow through the filter elements. A retainer plate having numerous six-sided openings allows a maximum volume of air to flow through the outlet port and the air funneler coupling to the engine manifold.
Claims9
An in-line after-air filter mounted between an engine air filter and an engine air intake in fluid communication with the air hose thereof comprising:
- a filter housing, a flared air inlet port and a funneled outlet port;
- an air diffuser located in said inlet port to deflect air flowing through the inlet port in a uniform manner;
- a plurality of discrete, removable, contiguous air filter elements, each element comprising a three dimensional network of interconnecting strands of a polyurethane foam, each of said elements having at least its back or rear surface which is most removed from the airflow direction impregnated with a petroleum-based substance such that contaminants in the airflow tend to be first deposited on the rear surface of said elements in order to maximize the efficiency of said filter.
Dependencies are inferred from the claim text.