Patent ID: 6350194
Filing Date: 2002-02-26
Classification: B08B

Abstract:
A laboratory fume hood for containing contaminated air within the confines thereof comprising:(a) a housing forming a generally rectangular interior cabinet including side walls, a back wall, a top wall, and an open front face, and a door disposed for movement between a closed position closing said open front face and an open position creating an opening through which a technicians hands can extend to work within said interior cabinet; (b) a vacuum source located within the interior cabinet adjacent the back wall thereof and adapted to be connected to an exhaust outlet for exhausting air from within the interior cabinet; (c) a bypass slot formed in said housing and disposed to direct outside air downwardly generally along the inside surface of said door; and (d) openings formed in said door and disposed to admit outside air into said interior cabinet in a direction generally transverse to said flow of outside and along the inside surface of said door to thereby cause the combined flow of said outside air to flow in a direction generally directly toward said exhaust plenum.