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US 8,677,558 B2Granted
Cyclonic surface cleaning apparatus with a filtration chamber external to the cyclone
AssigneeG.B.D. Corp.
InventorWayne Ernest Conrad
Life of this patent
Estimating the term…
Abstract
A surface cleaning apparatus comprises a filtration apparatus comprising a cyclone downstream from the dirty air inlet and an openable filtration chamber comprising a screen downstream from the cyclone and upstream from the suction motor. The filtration chamber is accordingly a separate volume to that of the cyclone chamber and accordingly may be accessed to clean the screen independently of opening the cyclone chamber.
Claims18
A surface cleaning apparatus comprising:
- (a) a dirty air inlet;
- (b) a filtration apparatus comprising a cyclonic cleaning stage downstream from the dirty air inlet and having a vortex finder provided in a cyclone chamber;
- (c) a suction motor;
- (d) a clean air outlet downstream from the suction motor;
- (e) an openable filtration chamber comprising a screen, an upstream wall having an air inlet and a downstream wall having an air outlet, the filtration chamber is positioned downstream from the vortex finder and upstream from the suction motor;
- and,
- (f) an openable pre-motor filter chamber comprising a pre-motor filter positioned downstream of the downstream wall and comprising a door sealing the pre-motor filter chamber, the pre-motor filter chamber is openable independently of the filtration chamber by opening said door.
4 more elements
A surface cleaning apparatus comprising:
- (a) a dirty air inlet;
- (b) a filtration apparatus comprising a cyclonic cleaning stage downstream from the dirty air inlet and having a cyclone air outlet;
- (d) a suction motor;
- (e) a clean air outlet downstream from the suction motor;
- and,
- (f) an openable filtration chamber comprising a screen and an access door and the screen is directly attached to, and moveably mounted with respect to, the access door whereby the screen is moved when the access door is opened and the screen is also moveable relative to the access door.
3 more elements
A surface cleaning apparatus comprising:
- (a) a dirty air inlet;
- (b) a filtration apparatus comprising a cyclone downstream from the dirty air inlet, the cyclone having a cyclone air outlet;
- (c) a cyclone dirt collection chamber exterior to the cyclone, the dirt collection chamber having an openable end wall comprising a dirt collection surface, wherein the dirt collection chamber is emptyable when the end wall is opened;
- (e) a suction motor;
- (f) a clean air outlet downstream from the suction motor;
- and,
- (g) an openable filtration chamber comprising a filter housing enclosing the filtration chamber and having a screen, an air inlet and an air outlet, the filtration chamber is provided on the openable end wall and positioned downstream from the cyclone air outlet and upstream from the suction motor, the filtration chamber having a pivoting wall pivotally connected to the openable wall.
4 more elements
Dependencies are inferred from the claim text.