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Surface cleaning apparatus

DC
  • US 10,327,607 B2
  • Filed: 06/14/2016
  • Issued: 06/25/2019
  • Est. Priority Date: 12/15/2006
  • Status: Active Grant
First Claim
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1. A hand carriable surface cleaning apparatus comprising:

  • a) a fluid flow path extending between a dirty air inlet and a clean air outlet;

    b) a first cyclonic cleaning stage positioned in the fluid flow path downstream from the dirty air inlet, the first cyclonic cleaning stage comprising an upper end, a bottom end spaced longitudinally below the upper end and a side wall extending therebetween, the first cyclonic cleaning stage having a dirt collection region with a bottom door that is openable to empty the dirt collection region;

    c) a second cyclonic cleaning stage positioned in the fluid flow path downstream from the first cyclonic cleaning stage, the second cyclonic cleaning stage having an upper end which is positioned above the upper end of the first cyclonic cleaning stage, the second cyclonic cleaning stage is longitudinally moveable relative to all of the sidewall of the first cyclonic cleaning stage;

    d) a suction motor positioned in the fluid flow path downstream from the second cyclonic cleaning stage; and

    ,e) a handle;

    wherein the second cyclonic cleaning stage comprises a plurality of second cyclones connected fluidly in parallel with each other,wherein the second cyclones are positioned around a central longitudinal axis that extends through the first cyclonic cleaning stage and the openable bottom door, andwherein the plurality of second cyclones includes a first set of second cyclones arranged in an inner ring and a second set of second cyclones arranged in an outer ring laterally surrounding the inner ring.

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