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US 12,171,393 B2Granted
Surface cleaning apparatus
AssigneeOmachron Intellectual Property Inc.
InventorWayne Ernest Conrad
Life of this patent
Estimating the term…
Abstract
A surface cleaning apparatus has a cyclone bin assembly having a cyclone chamber. The cyclone chamber with a physical filtration member defining the cyclone air outlet. The physical filtration member has an outer wall wherein at least a portion of the outer wall is porous and a plurality of ribs is spaced around the outer wall. The ribs have a radial inner side that has an inner width in the direction of rotation and a radial outer side that has an outer width in the direction of rotation that is narrower than the inner width.
Claims16
A surface cleaning apparatus comprising:
- (a) an air flow passage extending from a dirty air inlet to a clean air outlet;
- (b) a cyclone chamber positioned in the air flow passage, the cyclone chamber having a cyclone air inlet, a cyclone air outlet comprising a cyclone chamber outlet port, a cyclone axis of rotation, a first end and an axially opposed second end having the cyclone air outlet;
- (c) a physical filtration member positioned in the cyclone chamber upstream from the cyclone chamber outlet port, the physical filtration member extending inwardly into the cyclone chamber from the cyclone chamber outlet port, the physical filtration member comprising an outer wall wherein at least a portion of the outer wall comprises a conical screen, and a plurality of axially extending ribs spaced apart around the conical screen, the ribs having a radial inner side, a radial outer side, an upstream side based on the direction of rotation, a downstream side based on the direction of rotation and first and second longitudinally spaced apart ends, wherein the radial outer side is positioned radially outwardly of the outer wall;
- and,
- (d) a suction motor positioned in the air flow passage downstream from the cyclone chamber,
- wherein the radial inner side of each rib has an inner width in the direction of rotation and the radial outer side of each rib has an outer width in the direction of rotation that is narrower than the inner width, and
- wherein the cyclone axis of rotation extends in a first plane and the first plane extends through the radial inner side and the radial outer side of one of the ribs, and
- wherein a second plane transverse to the cyclone axis of rotation extends through the ribs and the screen, and
- wherein a space between adjacent ribs is open other than the conical screen, and
- wherein the conical screen is unsupported on the first end.
7 more elements
A surface cleaning apparatus comprising:
- (a) an air flow passage extending from a dirty air inlet to a clean air outlet;
- (b) an air treatment chamber positioned in the air flow passage, the air treatment chamber having an air treatment chamber air inlet, an air treatment chamber air outlet comprising an outlet port, a first end, an opposed second end and an axis extending between the first and second ends;
- (c) a screen positioned in the air treatment chamber upstream from the outlet port provided on the second end, the screen extending inwardly into the air treatment chamber from the outlet port, the screen comprising recessed conical screen material and a plurality of axially extending ribs spaced apart around the screen, the ribs having a radial inner side, a radial outer side, an upstream side based on the direction of rotation, a downstream side based on the direction of rotation and first and second longitudinally spaced apart ends, wherein the radial outer side is positioned radially outwardly of the recessed conical screen material;
- and,
- (d) a suction motor positioned in the air flow passage downstream from the cyclone chamber,
- wherein the radial inner side of each rib has an inner width in an angular direction extending around the longitudinal axis and the radial outer side of each rib has an outer width in the angular direction that is narrower than the inner width, and
- wherein the upstream side and the downstream side meet at an edge which forms the radial outer side of the ribs and the radial outer sides of the ribs define a conical outer perimeter of the screen, and
- wherein the screen is unsupported on the first end.
5 more elements
A surface cleaning apparatus comprising:
- (a) an air flow passage extending from a dirty air inlet to a clean air outlet;
- (b) a cyclone chamber positioned in the air flow passage, the cyclone chamber having a cyclone air inlet, a cyclone air outlet comprising a cyclone chamber outlet port, a cyclone axis of rotation, a first end and an axially opposed second end having the cyclone air outlet;
- (c) a physical filtration member positioned in the cyclone chamber upstream from the cyclone chamber outlet port, the physical filtration member extending inwardly into the cyclone chamber from the cyclone chamber outlet port, the physical filtration member comprising an outer wall wherein at least a portion of the outer wall comprises a conical screen, and a plurality of axially extending ribs spaced around the outer wall, the ribs having a radial inner side, a radial outer side, an upstream side based on the direction of rotation, a downstream side based on the direction of rotation and first and second longitudinally spaced apart ends, wherein the radial outer side is positioned radially outwardly of the conical screen;
- and,
- (d) a suction motor positioned in the air flow passage downstream from the cyclone chamber,
- wherein the radial inner side of each rib has an inner width in the direction of rotation and the radial outer side of each rib has an outer width in the direction of rotation that is narrower than the inner width,
- wherein the cyclone axis of rotation extends in a first plane and the first plane extends radially through the conical screen at a location between two adjacent ribs, and
- wherein a space between adjacent ribs is open other than the conical screen, and
- wherein the conical screen is unsupported on the first end.
6 more elements
Dependencies are inferred from the claim text.