Surface cleaning apparatus
AssigneeOmachron Intellectual Property Inc.
InventorWayne Ernest Conrad
Life of this patent
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Abstract
A surface cleaning apparatus includes an air flow path, a filter housing, and a filter member in the filter housing. In some embodiments, the filter member includes a plurality of individual filter elements arranged in parallel, each including porous filter material having at least one upstream face and at least one portion defining a porous filter media air outlet. In other embodiments, the filter member has an outer upstream surface that abuts an axially extending air impermeable wall to inhibit bypass of the filter.
Claims25
A surface cleaning apparatus comprising:
- (a) an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member and a suction motor positioned in the air flow path;
- and,
- (b) a filter housing having an axially extending filter chamber having an inlet end and an outlet end, the filter housing having an air impermeable wall extending from the outlet end towards the inlet end of the filter housing;
- and,
- (c) a filter comprising a porous filter media positioned in the filter housing, the porous filter media having an outer upstream surface and an inner outlet passage defining a downstream surface and having an axial flow direction, the outlet passage terminating at an outlet port provided in an end face of the porous filter media, the outer upstream surface abutting the air impermeable wall.
A surface cleaning apparatus comprising:
- (a) an air flow path extending from a dirty air inlet to a clean air outlet with an air treatment member and a suction motor positioned in the air flow path;
- and,
- (b) a filter housing having an axially extending filter chamber having an inlet end and an outlet end spaced from the inlet end in an axial direction, the filter housing having an air impermeable wall extending from the outlet end towards the inlet end of the filter housing;
- and,
- (c) a filter comprising a porous filter media positioned in the filter housing, the porous filter media having an outer upstream surface and an outlet portion provided in an end face of the porous filter media, the outer upstream surface abutting the air impermeable wall.
A porous filter media for a surface cleaning apparatus comprising an axially extending annular filter member having a first end, an axially spaced apart second end and an inner open volume extending axially from the first end to the opposed second end, and an separately formed insert is provided in and closes the first end of the open volume.
Dependencies are inferred from the claim text.