Multistage cyclone and surface cleaning apparatus having same

  • US 10,299,643 B2
  • Filed: 12/27/2016
  • Issued: 05/28/2019
  • Est. Priority Date: 12/27/2016
  • Status: Active Grant
First Claim
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1. A hand vacuum cleaner having, the hand vacuum cleaner comprising:

  • (a) an air flow path extending from a dirty air inlet to a clean air outlet and including an inlet conduit;

    (b) a first stage cyclone having a first stage cyclone chamber and a first stage dirt collection region;

    (c) a second stage cyclone downstream from the first stage cyclone and at least partially nested in the first stage cyclone, the second stage cyclone having a second stage cyclone chamber, a second stage cyclone axis and a second stage dirt collection chamber external to the second stage cyclone chamber; and

    ,(d) an openable end moveable between a closed position and an open position, the openable end comprising a portion of the second stage dirt collection chamber,wherein, when the openable end is in the open position, the second stage dirt collection chamber is opened and when the openable end is the closed positon, the openable end contacts an outer axially extending surface of the sidewall of the second stage cyclone chamber and the second stage dirt collection region is closed.

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