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

Claim 0:
1. 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 along the fluid flow path, the 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, the second upper end, and the air passageway;
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; and
a frame extending between the end cap and the annular cap;
wherein the first media layer, the second media layer, and the frame are compressible along the axis.