公开(公告)号：US20220312681A1

公开(公告)日：2022-10-06

申请号：US17706927

申请日：2022-03-29

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki KUTSUNA ,  Mikihiro KITAHARA

IPC: A01G3/04 ,  A01G3/037

Abstract: A gardening trimmer may include: a first blade; a facing member overlapping with the first blade in a second direction perpendicular to a first direction; and a suppressing structure. Grease may be applied to at least a part of a conversion mechanism. The first blade may include: a plurality of first slots; and a plurality of pairs of first connecting portions, wherein each pair of the first connecting portions is disposed at opposite ends of corresponding one of the first slots in a third direction perpendicular to the first and second directions. The suppressing structure may be configured to suppress the grease from moving toward a front end of the first blade in the first direction. The suppressing structure may be disposed on the facing member at a position facing at least one pair of in the second direction when the first blade reciprocates relative to the facing member.

公开(公告)号：US20210360863A1

公开(公告)日：2021-11-25

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

Abstract: A gardening trimmer may include: a conversion mechanism configured to convert rotational motion of a prime mover to linear motion along a first direction; a blade configured to move 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 configured to reduce frictional resistance generated by the reciprocating motion; and a second combination configured 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：US20230133010A1

公开(公告)日：2023-05-04

申请号：US17978394

申请日：2022-11-01

Applicant: MAKITA CORPORATION

Inventor： Tomoyuki KUTSUNA ,  Mikihiro KITAHARA

IPC: A01G3/053

Abstract: A working machine may include a pair of blades and a prime mover configured to reciprocate the pair of blades relative to each other. Each of the pair of blades may include a plurality of edge portions disposed along a reciprocating direction. Each of the plurality of edge portions of one of the pair of blades may include a slide surface configured to slide with respect to the plurality of edge portions of the other of the pair of blades as the pair of blades reciprocates relative to each other, a first edge surface connected to the slide surface and disposed at a first angle with respect to the slide surface, and a second edge surface connected to the first edge surface and disposed at a second angle with respect to the slide surface. The first angle may be greater than the second angle.

公开(公告)号：US20240349875A1

公开(公告)日：2024-10-24

申请号：US18638226

申请日：2024-04-17

Applicant: Makita Corporation

Inventor： Tomoyuki KUTSUNA ,  Mikihiro KITAHARA ,  Tatsuya HATA

IPC: A45F3/08 ,  A45F3/04 ,  H01M50/244 ,  H01M50/256

CPC classification number: A45F3/08 ,  H01M50/244 ,  H01M50/256 ,  A45F2003/045

Abstract: A backpack assembly may include a backplate extending in an up-down direction; an elastic member fixed on the backplate and configured to stretch in the up-down direction; and a shoulder belt including an accommodating part. The accommodating part may include an opening for inserting the elastic member and accommodate a portion of the elastic member.

公开(公告)号：US20200375117A1

公开(公告)日：2020-12-03

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

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.