US 11,864,495 B2
Robot lawnmower
Jinwook Yoon, Suwon-si (KR); Hyunki Bae, Suwon-si (KR); Hyunkoo Kang, Suwon-si (KR); Taegyu Kim, Suwon-si (KR); and Wonyoung Seo, Suwon-si (KR)
Assigned to Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed by Samsung Electronics Co., Ltd., Suwon-si (KR)
Filed on Mar. 16, 2021, as Appl. No. 17/203,563.
Claims priority of application No. 10-2020-0031888 (KR), filed on Mar. 16, 2020.
Prior Publication US 2021/0282322 A1, Sep. 16, 2021
Int. Cl. A01D 43/16 (2006.01); A01D 34/56 (2006.01); A01D 101/00 (2006.01); A01D 34/00 (2006.01)
CPC A01D 43/16 (2013.01) [A01D 34/008 (2013.01); A01D 34/56 (2013.01); A01D 2101/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A robot lawnmower comprising:
a body frame;
a main wheel disposed on both sides of the body frame;
a motor to drive the main wheel;
a first edge blade provided in a region of the body frame corresponding to the main wheel and coupled to be rotatable in a rotational direction opposite of a rotational direction of the main wheel with respect to the body frame by way of a driving force received from the motor; and
a second edge blade disposed between the body frame and the main wheel to rotate in an identical rotational direction of the rotational direction of the main wheel and cut grass by a relative rotation of the first edge blade and the main wheel, wherein the relative rotation of the first edge blade is a rotational motion opposite of a rotational motion of the second edge blade.