Patent ID: 11865485
Assignee: LG ELECTRONICS INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  A | IPC A  B

Claim 4:
5. The air cleaner of claim 4, wherein the clamp includes:
a holding block having a bottom surface and an upper surface that is inclined downward from a first side of the inner frame toward a second side of the inner frame;
an upper wedge provided on top of the holding block, the upper wedge having a flat upper surface and a lower surface that is inclined downward from the first side of the inner frame toward the second side; and
a motor configured to apply a force on the second side of the upper wedge to move the upper wedge in a first direction such that the holding block is moved in a second direction perpendicular to the first direction, the second direction being a direction toward a portion of the filter sheet to be held down.