公开(公告)号：US12245547B2

公开(公告)日：2025-03-11

申请号：US17457984

申请日：2021-12-07

Applicant: Makita Corporation

Inventor： Tomoyuki Kutsuna

IPC: A01D34/71 ,  A01D43/063 ,  A01D101/00

Abstract: A lawn mower may include: 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. The grass may include 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 may be configured to collect the heavy grass and discharge the light grass out of the grass collection unit.

公开(公告)号：US20250030312A1

公开(公告)日：2025-01-23

申请号：US18738597

申请日：2024-06-10

Applicant: MAKITA CORPORATION

Inventor： Takayoshi IIO ,  Tomoyuki Kutsuna

IPC: H02K7/14 ,  H02K5/22 ,  H02K9/06

Abstract: A motor unit may be configured to drive a working unit. The motor unit may include: a body housing comprising a first housing and a second housing, wherein an accommodating space is defined between the first housing and the second housing, and the first housing and the second housing define an entire outer contour of the body housing; a motor positioned in the accommodating space; an output unit configured to be fixed to the working unit and drive the working unit when the motor operates; a battery terminal exposed to outside of the body housing and configured to be connected to a battery configured to supply power to the motor; and a control unit positioned in the accommodating space and configured to control the motor.

公开(公告)号：US20220408639A1

公开(公告)日：2022-12-29

申请号：US17851466

申请日：2022-06-28

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki Kutsuna ,  Naoki Fujimatsu ,  Nozomu Iwamoto

IPC: A01D34/81 ,  A01D34/67 ,  A01D34/73

Abstract: A grounding body may be mounted on a cutting blade shaft of a grass cutter. The grounding body may include a mounting part for mounting the grounding body on the cutting blade shaft, wherein a cutting blade is mounted on the cutting blade shaft to be positioned above the grounding body; and a main body coupled to the mounting part and configured to contact a ground. The main body may include a first main body constituted of a first resin; and a second main body constituted of a second resin different from the first resin.

公开(公告)号：US10590815B2

公开(公告)日：2020-03-17

申请号：US15218505

申请日：2016-07-25

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki Kutsuna ,  Hiroki Sugiyama

IPC: F01M1/08 ,  F01M1/04 ,  F16N7/32 ,  F01M9/10 ,  F01M11/00 ,  F16N7/34 ,  F01L1/047 ,  F01L1/02

Abstract: The first opening part penetrates the first partition wall that separates the crank chamber and the oil sump chamber. The lubricating device of the engine includes an oil mist generation control part. The oil mist generation control part disperses gas injected from the crank chamber into the oil sump chamber through the first opening part when the crank chamber has a positive pressure or restricts the flow of oil with which the injected gas collides, thereby controlling an amount of oil mist generated in the oil sump chamber.

公开(公告)号：US11963489B2

公开(公告)日：2024-04-23

申请号：US17321949

申请日：2021-05-17

Applicant: MAKITA CORPORATION

Inventor： Mikihiro Kitahara ,  Tomoyuki Kutsuna ,  Nozomu Iwamoto ,  Tomoyuki Ota

IPC: A01G3/053 ,  A01G3/04

CPC classification number: A01G3/053 ,  A01G2003/0461

Abstract: A gardening trimmer may include: a conversion mechanism for converting rotational motion of a prime mover to linear motion along a first direction; a blade for moving in reciprocating motion relative to a guide bar and including a plurality of slots; and a plurality of guide members each disposed in a corresponding slot of the plurality of slots of the blade. The plurality of slots may include: at least one first slot in which a corresponding guide member of the guide members that is connected to a housing is disposed. A combination of the slots and the guide members may include: a first combination to reduce frictional resistance generated by the reciprocating motion; and a second combination to reduce vibration generated by the reciprocating motion, and at least one combination of the at least one first slot and its corresponding guide member is the second combination.

公开(公告)号：US11801882B2

公开(公告)日：2023-10-31

申请号：US17704694

申请日：2022-03-25

Applicant: Makita Corporation

Inventor： Tomoyuki Kutsuna ,  Toshihiro Tomita ,  Susumu Kato ,  Tomonobu Nashimoto ,  Kohei Oishi

IPC: B62B5/06 ,  B62B5/00 ,  B60Q5/00 ,  B60Q1/30

CPC classification number: B62B5/0046 ,  B60Q5/001 ,  B62B5/0036 ,  B62B5/0053 ,  B62B5/06 ,  B60Q1/30

Abstract: A handcart may include a drive wheel; a prime mover configured to rotate the drive wheel; a grip portion configured to be gripped by a user; and a visibly noticeable portion that is clearly noticeable from behind the user when the user stands behind the handcart, gripping the grip portion.

公开(公告)号：US20230101418A1

公开(公告)日：2023-03-30

申请号：US17954996

申请日：2022-09-28

Applicant: Makita Corporation

Inventor： Kohei OISHI ,  Tomoyuki Kutsuna

IPC: A01D34/10 ,  A01D34/40

Abstract: A working machine may include: a conversion mechanism configured to convert motion of a prime mover; a first blade connected to the conversion mechanism; a second blade overlapping with the first blade in an up-down direction and facing a first facing surface of the first blade; a sealing member engaged with a first non-facing surface of the first blade that is opposite to the first facing surface, wherein the sealing member includes a first sealing surface facing the first non-facing surface in the up-down direction; and a cover member facing a second sealing surface of the sealing member that is opposite to the first sealing surface of the sealing member. The sealing member may be disposed forward of the conversion mechanism and configured to suppress the object cut with the first blade and the second blade from moving toward the conversion mechanism between the first blade and the cover member.

公开(公告)号：US11419276B2

公开(公告)日：2022-08-23

申请号：US16883279

申请日：2020-05-26

Applicant: MAKITA CORPORATION

Inventor： Mikihiro Kitahara ,  Tomoyuki Kutsuna ,  Nozomu Iwamoto ,  Masayoshi Torihara

IPC: A01G3/053 ,  A01G3/04

Abstract: A gardening trimmer may include a first blade configured to be driven by a prime mover in a reciprocating manner along a first direction and a guide disposed in a slot of the first blade to guide reciprocating motion of the first blade. The slot includes first and second inner side surfaces opposing each other and extending along the first direction. The guide includes an outer peripheral surface opposing the slot's inner side surfaces. The outer peripheral surface of the guide includes a first portion in contact with the first inner side surface and a second portion in contact with the second inner side surface. The outer peripheral surface of the guide is curved at least at the first and second portions, and curvature radii of the first and second portions are each greater than a half of a distance between the first and second inner side surfaces.

公开(公告)号：US09950416B2

公开(公告)日：2018-04-24

申请号：US14784797

申请日：2014-04-16

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki Kutsuna ,  Ryo Sunazuka ,  Yoshitaka Machida ,  Masahiro Ito

IPC: B25F5/00 ,  B25D17/04 ,  B25F5/02 ,  B25D17/24

CPC classification number: B25D17/043 ,  B25D17/24 ,  B25D2222/57 ,  B25F5/006 ,  B25F5/02 ,  B25F5/026

Abstract: To provide a handle that is effective at achieving both vibration resistance and usability. A handle attached to a tool body of a power tool has: a grip portion; a connecting portion that connects to the tool body; elastic element interposing regions that are formed between the grip portion and the connecting portion; elastic elements disposed in the elastic element interposing regions; a powder filling region formed between the grip portion and connecting portion; and a plurality of powder bodies that fill the powder filling region.