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US 9,895,038 B2Granted
Automatic cleaner
AssigneeLG Electronics Inc.
InventorsJihwan Kim, Seaunglok Ham, Jongjin Woo, Hwang Kim
Life of this patent
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Abstract
An automatic cleaner is provided. The automatic cleaner may include a main body, and a wheel assembly disposed in the main body to allow the main body to move. The wheel assembly may include a drive, a first wheel rotated by a power of the drive, and a second wheel rotated by the power of the drive. The second wheel may include a plurality of contact protrusions on an outer circumferential surface thereof.
Claims18
An automatic cleaner, comprising:
- a main body;
- and
- at least one wheel assembly disposed in the main body to allow the main body to move, wherein at least one wheel assembly comprises:
- a drive;
- a first wheel rotated by a power of the drive;
- and
- a second wheel rotated by the power of the drive, wherein the second wheel includes a plurality of contact protrusions on an outer circumferential surface thereof, wherein in a state in which the main body is lifted, a lowest point of the second wheel is lower than a lowest point of the first wheel.
4 more elements
An automatic cleaner, comprising:
- a main body;
- a plurality of first wheels disposed in the main body to allow the main body to move;
- a plurality of drives to drive each of the plurality of first wheels;
- and
- a second wheel disposed between the plurality of first wheels and rotated by a power of one of the plurality of drives, wherein the second wheel comprises a plurality of contact protrusions on an outer circumferential surface thereof, and wherein a rotational center of the second wheel is lower than a rotational center of the first wheel.
2 more elements
An automatic cleaner, comprising:
- a main body;
- a plurality of first wheels disposed in the main body to allow the main body to move;
- a plurality of first drives to drive the plurality of first wheels, respectively;
- a second wheel disposed in the main body to allow the main body to move;
- and
- a second drive to drive the second wheel, wherein the second wheel is deformable by an external force and comprises a plurality of contact protrusions on an outer circumferential surface thereof, wherein the second wheel comprises:
- a first body;
- a second body disposed outside of an outer circumferential surface of the first body;
- and
- at least one connection portion that connects the first body to the second body, wherein the at least one connection part is elastically deformable, and wherein the plurality of contact protrusions is disposed on the outer circumferential surface of the second body.
7 more elements
Dependencies are inferred from the claim text.