US 12,245,547 B2
Lawn mower for collecting heavy grass and discharging light grass
Tomoyuki Kutsuna, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by Makita Corporation, Anjo (JP)
Filed on Dec. 7, 2021, as Appl. No. 17/457,984.
Claims priority of application No. 2020-204003 (JP), filed on Dec. 9, 2020.
Prior Publication US 2022/0174869 A1, Jun. 9, 2022
Int. Cl. A01D 34/71 (2006.01); A01D 43/063 (2006.01); A01D 101/00 (2006.01)
CPC A01D 34/71 (2013.01) [A01D 43/063 (2013.01); A01D 2101/00 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A lawn mower comprising:
a blade configured to cut grass;
a grass collection unit configured to collect the grass cut by the blade; and
a fan configured to generate an air flow that blows the grass cut by the blade toward the grass collection unit,
wherein,
the grass collection unit comprises:
a grass collection part configured to collect the grass and comprising a collection inlet and a discharge outlet; and
an adjustment mechanism disposed inside the grass collection part and configured to adjust the air flow having entered the grass collection part from the collection inlet,
the adjustment mechanism comprises a velocity adjustment member,
the velocity adjustment member is configured to adjust velocity of the air flow from the collection inlet toward the discharge outlet by adjusting an opening area of the discharge outlet,
the grass includes heavy grass cut long by the blade and light grass cut short by the blade,
among the heavy grass and the light grass having entered the grass collection unit, the grass collection unit is configured to collect the heavy grass and discharge the light grass out of the grass collection unit, and
by the adjustment mechanism adjusting the air flow having entered the grass collection part from the collection inlet, the heavy grass is collected in the grass collection part and the light grass is discharged out of the grass collection part from the discharge outlet.