Patent ID: 6348077
Filing Date: 2002-02-19
Classification: B01D

Abstract:
A multiple stage air-intake filter apparatus comprising:a first stage housing, said first stage housing having an end wall and a sidewall, said side wall having a first end and a second end, said end wall disposed at said first end of said sidewall, said second end of said sidewall forming a first stage opening into a first stage hollow, said hollow formed by said sidewall and said endwall; at least one vent opening into said sidewall; a fluid carrying juncture, said fluid carrying juncture having an end which forms an air-uptake portal, said air uptake portal between said housing endwall and said second end of said sidewall; a second stage housing, said second stage housing forms a second stage hollow, said second stage housing has an air-inlet opening into said second stage hollow, said second stage housing has an air outlet opening out of said second stage hollow, said second stage air-inlet downstream of said air-uptake portal, said second stage air-outlet downstream of said second stage air-inlet; a first filter element disposed in said second stage hollow said first filter element having a filter media and filter cartridge; a second filter element disposed in said second stage hollow, said second filter element having a filter media and filter cartridge, said second filter element in series with said first filter element, and wherein: said first stage opening, said air-uptake portal of said fluid carrying juncture, said second stage air-inlet and said second stage air outlet are all in fluid communication; said second stage air-inlet and second stage air-outlet are oriented so that a longitudinal axis coextensive with an axis of said second stage air-outlet, passes through said second stage air-inlet.