Patents Assigned to Makita Corporation
  • Publication number: 20200338780
    Abstract: A chain saw may comprise a braking mechanism; a housing including a first space and a second space in which the braking mechanism is disposed; and an operation member. The housing may include a through hole communicating the second space to outside of the housing. The operation member may be disposed over the second space and the outside of the housing through the through hole. The operation member may be movable between a braking position where the operation member causes the braking mechanism to interrupt rotation of a saw chain and a driving position where the operation member causes the braking mechanism not to interrupt the rotation of the saw chain. The braking mechanism may comprise a connecting member that moves in the second space in conjunction with movement of the operation member. The housing may include an opening communicating the first space to the second space.
    Type: Application
    Filed: April 21, 2020
    Publication date: October 29, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Yoshifumi Watanabe, Junichi Masuda, Hideki Kachi, Tsunahisa Nakamura
  • Patent number: 10814517
    Abstract: A chain saw disclosed herein may include a motor configured to rotate a saw chain about a guide bar, a control unit configured to control a voltage applied to the motor, a body housing that houses the motor and the control unit, a battery detachably attached to the body housing, and a top handle provided above the body housing. The control unit may be disposed above the battery. In a rear view of the chain saw in a state where the chain saw is placed on a mount surface, the battery and the control unit may not overlap. In a top view of the chain saw in the state where the chain saw is placed on the mount surface, the battery and the control unit may overlap at least partially.
    Type: Grant
    Filed: October 11, 2018
    Date of Patent: October 27, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Daisuke Suzuki, Takuma Niiyama
  • Publication number: 20200331135
    Abstract: A striking tool restricting movement of an intermediate member toward a striker reliably prevents no-load strokes. A hammer drill includes a cylindrical tool holder holding a tip tool, a motor, a piston that reciprocate with rotation from the motor, a striker that reciprocate in cooperation with the piston, an intermediate member reciprocably accommodated in the tool holder between the striker and the tip tool and in contact with a rear end of the tip tool at a normal strike to indirectly transmit a strike from the striker to the tip tool, and at least two ring members that move in a front-rear direction accommodated in the tool holder at a front of the intermediate member between the tool holder and the intermediate member. At least one ring member is made of metal.
    Type: Application
    Filed: March 5, 2020
    Publication date: October 22, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Mizuki YAMAMOTO
  • Patent number: 10807224
    Abstract: An impact tool includes a tool body, a tool holder, a cylindrical member, a reciprocating member, a motor, a first rotary body, a second rotary body, a swinging member, and clutch mechanisms. The clutch mechanisms are disposed between the first rotary body and the second rotary body on a power transmission path from the motor to the swinging member. The tool holder and the cylindrical member move together as a movable unit with respect to the tool body between a front end position and a separate position, according to a pressing force applied to the tool holder. The clutch mechanisms are each configured to start transmission of the first rotary body to the second rotary body while the movable unit moves from the front end position to the separate position and to interrupt transmission while the movable unit moves from the separate position to the front end position.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: October 20, 2020
    Assignee: MAKITA CORPORATION
    Inventor: Yoshitaka Machida
  • Patent number: 10811937
    Abstract: A power tool includes a brushless motor having a stator and a rotor, which includes a rotary shaft extending in a front-rear direction of the power tool. The rotary shaft rotates a spindle that extends in an up-down direction of the power tool. A fan is fixedly coupled to the rotary shaft and rotates therewith. A switch is disposed rearward of the brushless motor and a controller is disposed rearward of the switch in the front-rear direction. A battery pack is disposed rearward of the controller. A main-body housing houses the brushless motor, the switch and the controller. The main-body housing includes a first tubular part, which houses the brushless motor, and a second tubular part, which houses the switch. The diameter of the second tubular part is smaller than the diameter of the first tubular part.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: October 20, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Takahiro Kawakami, Masatoshi Nakahama
  • Publication number: 20200328712
    Abstract: An electric working machine in one aspect of the present disclosure includes a driving device, a controller, a control power source, and an operation state determiner. The control power source includes a first converter and a second converter. The control power source transitions to a first conversion state when the operation state determiner determines that the controller is in a control operation state. The control power source in the first conversion state supplies a first control current to the controller. The control power source transitions to a second conversion state when the operation state determiner determines that the controller is in a low power operation state. The control power source in the second conversion state (i) stops operation of the first converter, and (ii) supplies a second control current to the controller.
    Type: Application
    Filed: March 27, 2020
    Publication date: October 15, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Hitoshi SUZUKI, Akihiro NAKAMOTO
  • Patent number: 10799996
    Abstract: A dust collector includes a main body, a sliding part, and a communication passage. The main body includes an internal region disposed between a power tool and a dust storing region. The sliding part is held by the main body so as to be slidable in a first direction while partly protruding out of the main body through an opening and partly disposed in the internal region. The communication passage extends in a second direction crossing the first direction within the internal region. When the sliding part is placed at a closest position, a distance in the first direction between the opening and an innermost end of the sliding part is longer than a distance between the opening and the communication passage. The sliding part includes an interference avoiding part configured to avoid interference with the communication passage when the sliding part is placed at the closest position.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: October 13, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Masanori Furusawa, Hideki Tsuji
  • Publication number: 20200316767
    Abstract: A work tool includes a spindle, a clamp shaft and at least one biasing part. The spindle is configured to be reciprocally rotated within a specified angle range around a driving axis. The spindle has a first inclined face inclined in a direction crossing the driving axis. The clamp shaft includes a shaft part and a head part. The shaft part is configured to be coaxially inserted into the spindle. The head part is formed on a lower end portion of the shaft part and configured to clamp the tool accessory in cooperation with the spindle while a second inclined face of the tool accessory is pressed against the first inclined face. The at least one biasing part is provided in the spindle and configured to always bias the tool accessory downward while the tool accessory is clamped by the head part and the spindle.
    Type: Application
    Filed: April 8, 2020
    Publication date: October 8, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Masanori FURUSAWA, Akira MIZUTANI
  • Publication number: 20200316766
    Abstract: A power tool can absorb the shock from suspension resulting from falling while preventing the power tool from falling on the ground. A power tool includes a tool holder attachable to the power tool. The tool holder includes an annular portion that receives a suspension member through the annular portion, a base supporting the annular portion, and at least one bend located between the annular portion and the base.
    Type: Application
    Filed: February 21, 2020
    Publication date: October 8, 2020
    Applicant: MAKITA CORPORATION
    Inventor: Yoshitaka Machida
  • Patent number: 10797494
    Abstract: A power supply adapter according to one aspect of the present disclosure includes a power cord, a power-source attachment portion, a working-machine attachment portion, a temperature detector, and an overheat determiner. The temperature detector is configured to detect temperature of the power cord and to output a detection signal indicating the temperature detected. The overheat determiner is configured to determine that the power cord is in an overheated state based on the detection signal from the temperature detector and to output an overheat determination result indicating that the power cord is in the overheated state.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: October 6, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Toru Yamada, Takayoshi Endo, Hiroki Oka
  • Publication number: 20200306945
    Abstract: A dust collecting system includes a power tool and a dust collector. The power tool includes at least one battery-mounting part, a first motor, a driving mechanism and a body housing. The at least one battery-mounting part is each configured to removably receive a battery. The first motor is configured to operate with electric power supplied from the battery. The driving mechanism is configured to drive the tool accessory by power of the first motor. The body housing houses the first motor and the driving mechanism. The dust collecting system includes a control device configured to control operation of at least one of the power tool and the dust collector according to a state of the whole dust collecting system.
    Type: Application
    Filed: March 26, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Yoshitaka MACHIDA, Hitoshi IIDA
  • Publication number: 20200306911
    Abstract: The dust concentration is prevented from increasing with uncollected dust scattering in a work environment. A dust collection system for a power tool includes a power tool, a dust collection apparatus connected to the power tool, and a system control unit that controls an operation of the system for controlling an operation of the power tool and/or an operation of the dust collection apparatus in accordance with the dust concentration obtained from an external unit.
    Type: Application
    Filed: January 29, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Hitoshi IIDA, Keita MORI
  • Publication number: 20200306669
    Abstract: The filter can receive timely dust removal in a reliable manner. A dust collection attachment connectable to a hammer drill includes a dust collection motor that generates a suction force, a filter that catches sucked dust, a solenoid that removes dust accumulating on the filter, and a dust collection controller that controls an operation of the dust collection motor and the solenoid and activates the solenoid when a predetermined condition is satisfied.
    Type: Application
    Filed: February 13, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Yoshiro TADA, Masanori FURUSAWA
  • Publication number: 20200305665
    Abstract: The filter can receive timely maintenance. A dust collection system includes a hammer drill, a dust collection attachment connected to the hammer drill and including a dust collection motor that generates a suction force and a filter that catches sucked dust, and a dust collection controller that monitors a state of the dust collection attachment to determine a time to perform maintenance.
    Type: Application
    Filed: February 13, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Hideki TSUJI
  • Publication number: 20200306904
    Abstract: A dust collecting system includes a power tool and a dust collector. The power tool is configured to perform processing operation on a workpiece by driving a tool accessory. The dust collector is configured to collect dust generated by the processing operation. The power tool includes a first motor and a driving mechanism configured to drive the tool accessory by power of the first motor. The dust collector includes a second motor and a fan configured to be rotationally driven by the second motor to generate air flow for collecting dust. The dust collecting system includes a first control device configured to control a rotation speed of the second motor according to a driving state of the power tool.
    Type: Application
    Filed: March 26, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Hitoshi IIDA, Yoshiro TADA, Hideki TSUJI, Taro HISANO
  • Publication number: 20200306907
    Abstract: A dust collecting system includes a power tool and a stationary dust collector. The power tool is configured to perform processing operation on a workpiece by driving a tool accessory. The stationary dust collector is configured to be placed separately from the power tool and to collect dust generated by the processing operation. The power tool includes a first motor and a driving mechanism configured to drive the tool accessory by power of the first motor. The dust collector includes a second motor and a fan configured to be rotationally driven by the second motor to generate air flow for collecting dust. The dust collecting system includes a control device configured to control a rotation speed of the second motor according to a driving state of the power tool.
    Type: Application
    Filed: March 26, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Hitoshi IIDA, Yoshiro TADA, Hideki TSUJI, Taro HISANO
  • Publication number: 20200306906
    Abstract: Appropriate control is performed in accordance with the state of a power tool and/or a dust collection attachment. A dust collection system for a power tool includes a hammer drill to hold a bit, a dust collection attachment connected to the hammer drill, and a dust collection controller that controls the operation of the hammer drill and/or the dust collection attachment in accordance with the specifications of the hammer drill and/or the dust collection attachment.
    Type: Application
    Filed: February 7, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Keita MORI, Yoshitaka MACHIDA, Yu KOBAYASHI
  • Publication number: 20200310076
    Abstract: One aspect of the present disclosure provides a laser line generator that includes a laser beam source, a conversion lens, a lens holder, a rotation axis, a rotation support, a biasing portion, and a gap adjuster. The rotation support abuts the rotation axis and supports the lens holder such that the lens holder rotates about the rotation axis. The biasing portion brings the lens holder and the rotation support closer to each other. The gap adjuster adjusts a gap dimension between the lens holder and the rotation support that are brought closer to each other by the biasing portion.
    Type: Application
    Filed: March 12, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventor: Kazuki OGUCHI
  • Publication number: 20200306946
    Abstract: A dust collecting system includes a power tool configured to perform processing operation on a workpiece by driving a tool accessory and a dust collector configured to collect dust generated by the processing operation. The power tool includes a first motor, a driving mechanism, a body housing, a first detecting device, an operation member and a second detecting device. The first detecting device is configured to detect an operation of pressing the tool accessory against the workpiece. The operation member is configured to be externally operated by a user. The second detecting device is configured to detect an operation of the operation member. The dust collector includes a second motor and a fan. The dust collecting system includes a first control device configured to control driving of the second motor based on detection results of the first detecting device and the second detecting device.
    Type: Application
    Filed: March 26, 2020
    Publication date: October 1, 2020
    Applicant: MAKITA CORPORATION
    Inventor: Hajime TAKEUCHI
  • Patent number: D899881
    Type: Grant
    Filed: April 9, 2019
    Date of Patent: October 27, 2020
    Assignee: MAKITA CORPORATION
    Inventors: Koji Takahashi, Kento Nakamura, Hideki Kachi