Patents Assigned to Makita Corporation
  • Battery pack and method of protecting battery pack
    Patent number: 11876190
    Abstract: A battery pack in one aspect of the present disclosure includes a battery and a controller provided with a counter value. During discharge of the battery pack, the controller calculates an addition value in accordance with a total number of use of the battery pack under a specified condition. The controller updates the counter value by adding the addition value. The controller prohibits the discharge of the battery pack in response to the counter value reaching a protection threshold.
    Type: Grant
    Filed: September 16, 2020
    Date of Patent: January 16, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Tadahiko Kobayakawa, Hiroki Uesugi, Hayato Kano
  • Reciprocating tool
    Patent number: 11872646
    Abstract: A reciprocating tool includes a housing, a first tubular member, a slider, a second tubular member and a lock member. The first tubular member is pivotable around a first axis and has a single first protrusion protruding radially inward. The second tubular member is disposed in the first tubular member, is coupled to a first end portion of the slider to be pivotable around a second axis, and has a single second protrusion protruding radially outward. The second tubular member has a protruding portion configured to allow the lock member to move from a lock position to an unlock position. The single first protrusion is configured to engage with the single second protrusion and cause the second tubular member to pivot when the first tubular member pivots. The single second protrusion is provided on a portion of the second tubular member other than the protruding portion.
    Type: Grant
    Filed: October 20, 2021
    Date of Patent: January 16, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Yuta Yamashita, Tomohiro Ukai
  • Portable power tool
    Patent number: 11872668
    Abstract: A portable power tool includes an electric motor having a motor shaft, an output shaft arranged in parallel to the motor shaft and configured to be driven by rotation of the motor shaft, a tool accessory operably connected to the output shaft and configured to undergo an orbital and/or rotational motion in response to rotation of the output shaft, a first bearing that rotatably supports the output shaft, and a second bearing that rotatably supports the output shaft and is arranged closer to the tool accessory than the first bearing in an axial direction in which the output shaft extends. The first and second bearings are arranged at positions that do not overlap with a radially outermost one of components of the electric motor when viewed in a shaft arrangement direction in which the motor shaft and the output shaft are arranged in parallel.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: January 16, 2024
    Assignee: MAKITA CORPORATION
    Inventor: Chitphong Kuntheeya
  • Portable power tool
    Patent number: 11872682
    Abstract: A portable power tool includes a first handle extending in an elongated manner and configured to be held by a user, an electric motor, a tool accessory that undergoes orbital and/or rotational motion in response to generation of a rotational driving force by the electric motor, and a battery mounting part configured to detachably attach a battery that serves as a power source for the electric motor. The battery mounting part includes an upward mounting surface on which the battery is mountable, and at least one terminal configured to be electrically connected to the battery when a surface of the battery that includes a connection interface is placed on the mounting surface. The mounting surface is located at a position different from the first handle in the front-rear direction, and is located below an upper side of the first handle in the up-down direction.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: January 16, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Tomoki Takata, Katsumi Okouchi, Takuji Kimura
  • BLOWER
    Publication number: 20240011502
    Abstract: A blower includes a body having a main inlet opening and a discharge opening, a motor assembly housed in the body, and an auxiliary inlet opening. The motor assembly includes a case, a motor and a fan. The case has a first opening and a second opening. The motor is housed within the case. The fan is configured to rotate in response to driving of the motor to generate a flow of air passing the main inlet opening, the first opening, the motor, the second opening and the discharge opening in this order. A first space that communicates with the main inlet opening and the first opening of the case is formed within the body. The auxiliary inlet opening is configured to introduce the air from an outside of the body into the first space.
    Type: Application
    Filed: September 20, 2023
    Publication date: January 11, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Fumitoshi NUMATA, Takumi HAYASHI
  • ROTARY HAMMER
    Publication number: 20240009823
    Abstract: A rotary hammer includes a tool body, a tool holder, a cylinder, and a coupling member. The tool holder has a tubular shape and a longitudinal axis. The tool holder is configured to hold a tool accessory to be movable along the longitudinal axis and is supported by the tool body to be rotatable around the longitudinal axis. The cylinder extends coaxially with the tool holder and is supported by the tool body to be rotatable around the longitudinal axis. The coupling member is between the tool holder and the cylinder in a radial direction of the tool holder and is engaged with the tool holder and the cylinder to couple the tool holder and the cylinder together such that the tool holder and the cylinder integrally rotate.
    Type: Application
    Filed: June 16, 2023
    Publication date: January 11, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Hajime TAKEUCHI, Yoji INOUE, Masanori FURUSAWA
  • WORKING MACHINE
    Publication number: 20240009744
    Abstract: A working machine may include: a prime mover; a housing that houses the prime mover; a cutting part configured to be driven by the prime mover and cut an object; a dust collecting hose for collecting dust generated by the cutting part cutting the object; and a hose holding member configured to hold the dust collecting hose. The hose holding member may be attached to the housing so as to be swingable about a swing axis.
    Type: Application
    Filed: June 27, 2023
    Publication date: January 11, 2024
    Applicant: Makita Corporation
    Inventors: Takumi ISHIZAWA, Sho TSUDA
  • Impact tool
    Patent number: 11865688
    Abstract: An impact tool includes a housing; and a motor, a tubular tool holder, a driving mechanism, a rotation shaft, a driving mechanism housing region inside the housing. The tool holder has a distal end on which a bit is mountable. The driving mechanism is configured to hammer the bit. The rotation shaft is disposed in the driving mechanism and rotates by a rotation of an output shaft of the motor. The driving mechanism housing region houses the driving mechanism in a sealed state inside the housing. The air escape path that releases air inside the driving mechanism housing region to outside of the driving mechanism housing region is formed inside the rotation shaft while an inlet of the air escape path is formed on an outer peripheral surface of the rotation shaft.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: January 9, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Yoshitaka Machida, Kiyonobu Yoshikane
  • Rotating tool
    Patent number: 11865668
    Abstract: A grinder including a motor, a switch operated ON and OFF in accordance with an operation of a switch lever to control a rotation of an output shaft of the motor, a spindle that rotates in accordance with the rotation of the output shaft to rotate a disk-shaped grinding wheel and a brake mechanism controllable with respect to a brake plate that integrally rotates with the output shaft, in a housing, the brake plate includes fins.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: January 9, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kenji Shibata, Masanori Furusawa
  • Impact tool and dust collection system
    Patent number: 11865657
    Abstract: An impact tool includes a housing, an impact mechanism unit, a motor, and a dust collection fan. The housing is configured to mount a dust collection attachment. The impact mechanism unit is disposed inside the housing. The impact mechanism unit has a front end to which a tool bit is mounted and an impact element that reciprocates. The impact mechanism unit is configured to impact the tool bit by the impact element. The motor is disposed such that a rotation shaft of the motor intersects with an impact axis direction of the impact mechanism unit inside the housing. The dust collection fan is disposed on the rotation shaft. The dust collection fan is disposed below the motor.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: January 9, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kiyonobu Yoshikane, Hiroki Takesashi
  • Cart
    Patent number: 11865924
    Abstract: A cart may include a driving wheel, a motor configured to rotate the driving wheel, a motor drive circuit configured to drive the motor, a motor brake circuit configured to electrically brake the motor, a control device configured to control the motor via the motor drive circuit and the motor brake circuit so that a travelling speed of the cart becomes equal to or lower than an upper limit travelling speed, and a temperature sensor configured to detect a temperature of the motor brake circuit. The control device may be configured to change the upper limit travelling speed to a second upper limit travelling speed lower than the first upper limit travelling speed when the upper limit travelling speed is a first upper limit travelling speed and the temperature detected by the temperature sensor exceeds a first predetermined temperature.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: January 9, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Ryo Umemoto, Hirokatsu Yamamoto
  • ELECTRIC WORK MACHINE
    Publication number: 20240006933
    Abstract: An electric work machine includes a stator including a stator core, an insulator fixed to the stator core, and a coil mounted on the insulator, a rotor at least a part of which is disposed on an outer circumferential side of the stator, the rotor including a magnet, a stator base including a first heat dissipation fin and supporting the stator core, and an output unit driven by the rotor.
    Type: Application
    Filed: October 21, 2021
    Publication date: January 4, 2024
    Applicant: MAKITA CORPORATION
    Inventor: Kei KOUDA
  • BATTERY PACK
    Publication number: 20240006699
    Abstract: A battery pack includes a casing, a battery cell, a circuit board, an engaging member, a first biasing member biasing the engaging member upward, and a second biasing member biasing the engaging member upward. A part of the circuit board is arranged between the first biasing member and the second biasing member. The engaging member includes an engaging portion protruding to the outside of the casing. The engaging portion has an engaging surface that extends along an up-down direction and a left-right direction and engages with an electrical device. In a front-rear direction, the engaging surface is arranged rearward of a front end of the first biasing member and frontward of a rear end of the first biasing member. In the front-rear direction, the engaging surface is arranged rearward of a front end of the second biasing member and frontward of a rear end of the second biasing member.
    Type: Application
    Filed: December 7, 2021
    Publication date: January 4, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Tatsuya NAGAHAMA, Kazuya TANAKA
  • ILLUMINATION APPARATUS
    Publication number: 20240003503
    Abstract: To efficiently illuminate a wide area, an illumination apparatus includes a housing, a light emitter, and a light-transmissive member supported by the housing. The housing has an outer surface including a first outer surface and a second outer surface adjacent to the first outer surface. The second outer surface faces in a direction different from a direction in which the first outer surface faces. The light emitter is operable with power supplied from a battery pack. The light-transmissive member is transmissive to at least part of light from the light emitter and extends on the first outer surface and on the second outer surface.
    Type: Application
    Filed: May 12, 2023
    Publication date: January 4, 2024
    Applicant: MAKITA CORPORATION
    Inventor: Kazunori TSUGE
  • BLOWER
    Publication number: 20240003360
    Abstract: A blower includes a body, a motor, and a single fan configured to rotate in response to rotation of a motor shaft to discharge air through a discharge opening. The maximum rotational speed of the motor shaft is within a range of 50,000 rpm to 120,000 rpm. An area of the discharge opening is changeable by a user. The blower is configured to selectively operate in a first mode or in a second mode according to the area of the discharge opening. In the first mode, the maximum blowing force of the air discharged through the opening is within a range of 2.5 N to 5.0 N when the motor is driven at the maximum rotational speed. In the second mode, the maximum dynamic pressure of the air discharged is within a range of 30 kPa to 65 kPa when the motor is driven at the maximum rotational speed.
    Type: Application
    Filed: September 15, 2023
    Publication date: January 4, 2024
    Applicant: MAKITA CORPORATION
    Inventor: Fumitoshi NUMATA
  • ELECTRICAL DEVICE
    Publication number: 20240000008
    Abstract: An electrical device may be configured to operate on supplied electric power. The electrical device may include a display configured to display a state related to the electrical device, a control device configured to control the electrical device, and a power supply configured to supply electric power to the electrical device. The display may include: a housing including a housing body, an opening, and a transmissive member, in which the opening is defined through the housing body and the transmissive member covers the opening; a light source device housed in the housing and configured to emit visible light; and a reflector housed in the housing and having a reflective surface configured to reflect the visible light emitted from the light source device toward the opening. The control device may be configured to control the light source device according to the state related to the electrical device.
    Type: Application
    Filed: June 12, 2023
    Publication date: January 4, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Makoto CHIKARAISHI, Tatsuya KOBAYASHI
  • Impact tool
    Patent number: 11858094
    Abstract: Durability deterioration caused by a shock load is effectively reduced. An impact driver includes a motor, a carrier including a reduction assembly and rotatable by the motor, a shaft that receives rotation of the carrier and is rotatable relative to the carrier in an overloaded state, a hammer held by the shaft, and an anvil that is struck by the hammer in a rotation direction.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: January 2, 2024
    Assignee: MAKITA CORPORATION
    Inventor: Yasuhito Kawai
  • Cutting machine
    Patent number: 11858082
    Abstract: An illuminator that emits light from a radially outer portion of the cutting tool toward the cutting tool includes a first light source and a second light source, and a first lens and a second lens. The first lens has a first emission surface including a first outermost portion located farthest and at a first distance from a first center axis including a first light source center of the first light source and perpendicular to the first light source. The second lens has a second emission surface including a second outermost portion located farthest and at a second distance from a second center axis including a second light source center of the second light source and perpendicular to the second light source. A distance between the first center axis and the second center axis is shorter than a sum of the first distance and the second distance.
    Type: Grant
    Filed: February 7, 2022
    Date of Patent: January 2, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Hiroto Korekawa, Akihiro Hozumi, Toshiyuki Kani
  • Electric work machine
    Patent number: 11863047
    Abstract: An electric work machine, such as a lawn mower includes a motor case (22) fixed inside a main-body housing (10). A brushless motor (21) is housed inside the motor case (22) and includes a stator (23) having a stator core (40), coils (45), and upper and lower insulators (42, 43), and a rotor (24) disposed inward of the stator (23) and having a rotary shaft (25). A spindle (17) is driven by the rotary shaft (25). The motor case (22) holds the stator (23) and axially supports the rotary shaft (25) via bearings (68, 76). One or more insulating members, such as an insulating cap (67) and/or a resin layer (78), provide electrical insulation between the stator core (40) and the rotary shaft (25).
    Type: Grant
    Filed: March 28, 2023
    Date of Patent: January 2, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kei Kouda, Hideki Abe
  • POWER TOOL INCLUDING VIBRATION ISOLATOR
    Publication number: 20230415323
    Abstract: A power tool including a vibration isolator can be downsized in a relative movement direction and reduce damage to wiring. A hammer drill includes a front housing including an output unit and a motor, a rear housing separate from the front housing and including a switch to be movable relative to the front housing in a front-rear direction, a vibration isolator located between the front housing and the rear housing and including a coil spring, a lead wire electrically connecting the motor and the switch, and a lead wire holder holding a middle portion of the lead wire in a lateral direction.
    Type: Application
    Filed: May 3, 2023
    Publication date: December 28, 2023
    Applicant: MAKITA CORPORATION
    Inventors: Naoto ICHIKAWA, Yoshitaka MACHIDA, Taro HISANO