Patent ID: 11903551
Assignee: TECHTRONIC FLOOR CARE TECHNOLOGY LIMITED
Field: Chemical engineering (Chemistry)
Classification: CPC A  B | IPC A  B

Claim 13:
14. A floor cleaner comprising:
a fluid flow path extending from an air inlet to an air outlet;
a suction motor operable to generate an airflow along the fluid flow path;
a cylindrical filter disposed upstream of the suction motor, the cylindrical filter including:
a first media layer forming a hollow cylinder around an air passageway along a filter axis, the first media layer having a first inner cylindrical portion and a first outer cylindrical portion extending between a first upper end and a first lower end of the first media layer;
a second media layer forming a hollow cylinder around the first media layer, the second media layer having a second inner cylindrical portion and a second outer cylindrical portion extending between a second upper end and a second lower end of the second media layer;
an end cap closing the first upper end and the second upper end;
an annular cap closing the first lower end and the second lower end, the annular cap having an aperture connecting the airflow path to the air passageway;
wherein the first media layer and the second media layer are compressible along the filter axis, between the end cap and the annular cap, and wherein at least one of the first media layer and the second media layer is a resilient material.