Patents by Inventor Toshihito YABUNAKA

Toshihito YABUNAKA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11396038
    Abstract: A fastening tool includes a housing, a handle, an anvil, a pin-gripping part, a motor, and a driving mechanism. The driving mechanism is configured to move the pin-gripping part along a first axis defining a front-rear direction, relative to the anvil. The driving mechanism includes a rotary member, a movable member, a driving gear and an idler gear. The rotary member has a driven gear formed on its outer periphery and is rotatable around the first axis. The movable member is connected to the pin-gripping part and configured to be linearly moved in the front-rear direction by rotation of the rotary member. The driving gear is configured to be rotated around a second axis extending in parallel to the first axis below the first axis. The idler gear is engaged with the driving gear and the driven gear.
    Type: Grant
    Filed: August 26, 2020
    Date of Patent: July 26, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Toshihito Yabunaka, Hiroki Ikuta, Takao Kuroyanagi, Koichi Yakabe
  • Patent number: 11325180
    Abstract: A fastening tool includes a tool body, an anvil, a pin-gripping part, a motor, a rotation member, a moving member, a gear part and a receiving member. The rotation member is configured to be rotationally driven around the driving axis. The moving member is coupled to the pin-gripping part and engaged with the rotation member. The moving member is configured to move along a driving axis defining a front-rear direction, in response to rotational driving of the rotation member. The gear part is shaped like a flange projecting radially outward from an outer peripheral surface of the rotation member, and has gear teeth on an outer circumference thereof. The receiving member is disposed rearward of the gear part and configured to receive, via a rear surface of the gear part, a rearward reaction force applied to the rotation member when the pin-gripping part moves frontward.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: May 10, 2022
    Assignee: MAKITA CORPORATION
    Inventors: Toshihito Yabunaka, Hiroki Ikuta
  • Publication number: 20210394253
    Abstract: A fastening tool includes a tool body, an anvil, a pin-gripping part, a motor, a rotation member, a moving member, a gear part and a receiving member. The rotation member is configured to be rotationally driven around the driving axis. The moving member is coupled to the pin-gripping part and engaged with the rotation member. The moving member is configured to move along a driving axis defining a front-rear direction, in response to rotational driving of the rotation member. The gear part is shaped like a flange projecting radially outward from an outer peripheral surface of the rotation member, and has gear teeth on an outer circumference thereof. The receiving member is disposed rearward of the gear part and configured to receive, via a rear surface of the gear part, a rearward reaction force applied to the rotation member when the pin-gripping part moves frontward.
    Type: Application
    Filed: June 9, 2021
    Publication date: December 23, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Toshihito YABUNAKA, Hiroki IKUTA
  • Publication number: 20210394254
    Abstract: A fastening tool includes a motor, a fastening mechanism, a tool body and a main handle. The motor includes a motor body and a motor shaft. The fastening mechanism is configured to fasten workpieces via a fastener by pulling a pin of the fastener rearward relative to a tubular part of the fastener along a driving axis defining a front-rear direction of the fastening tool. The tool body houses the motor and the fastening mechanism. The main handle extends in a direction crossing the driving axis and connected to the tool body such that the main handle and the tool body together form an annular part. A rotational axis of the motor shaft extends parallel to the driving axis. A portion of the main handle is located in a rear space extending behind the motor body.
    Type: Application
    Filed: June 8, 2021
    Publication date: December 23, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Toshihito YABUNAKA, Hiroki IKUTA, Koichi YAKABE, Takao KUROYANAGI
  • Patent number: 11185913
    Abstract: A fastening tool includes a bolt-gripping part, an anvil, a bolt-gripping-part driving mechanism, a motor, a housing, and thrust rolling bearings. The bolt-gripping-part driving mechanism includes a first mechanism part supported by the housing and a second mechanism part connected to the bolt-gripping part. The second mechanism part is configured to be driven in a longitudinal-axis direction by the first mechanism part being rotationally driven, so that the bolt-gripping part is moved in the longitudinal-axis direction relative to the anvil. The thrust rolling bearings are disposed on a first direction side and a second direction side of the first mechanism part, respectively.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: November 30, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Hiroki Ikuta, Toshihito Yabunaka, Takao Kuroyanagi
  • Patent number: 11161168
    Abstract: A fastening tool includes a housing, a fastener-abutment part, a pin-gripping part, a motor, a driving mechanism and a handle. The housing extends in a front-rear direction along a driving axis. The driving mechanism is configured to move the pin-gripping part rearward along the driving axis relative to the fastener-abutment part. The driving mechanism includes a rotary member and a movable member configured to linearly move in the front-rear direction when the rotary member is rotationally driven. The handle protrudes downward from the housing and has a trigger. A rotation axis of a motor shaft extends in parallel to the driving axis on a lower side of the driving axis. A virtual plane including the driving axis and the rotation axis passes a center of the handle in a left-right direction. The trigger is disposed between the rotary member and a motor body in the front-rear direction.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: November 2, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Toshihito Yabunaka, Hiroki Ikuta, Takao Kuroyanagi
  • Patent number: 11065674
    Abstract: A fastening tool includes a fastener-abutment part, a pin-gripping part, a motor, a driving mechanism, an input-accepting part and a motor-control part. The fastener-abutment part is configured to abut on a cylindrical part of a fastener. The pin-gripping part is configured to grip a portion of a pin of the fastener. The driving mechanism is configured to be driven by power of the motor to move the pin-gripping part rearward along a driving axis relative to the fastener-abutment part, thereby fastening a workpiece via the fastener. The input-accepting part is configured to accept setting information for a control condition of the motor inputted via an operation part configured to be externally operated by a user. The motor-control part is configured to control operation of the driving mechanism by controlling driving of the motor according to the control condition based on the setting information accepted by the input-accepting part.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: July 20, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Yuki Kawai, Michisada Yabuguchi, Hiroki Ikuta, Toshihito Yabunaka
  • Patent number: 11045861
    Abstract: A fastening tool includes a bolt-gripping part, an anvil, a motor, and a control part. When the bolt-gripping part grips an end region of a shaft part and moves relative to the anvil in a first direction of a longitudinal-axis direction, the anvil presses a collar fitted onto the shaft part in a second direction opposite to the first direction of the longitudinal-axis direction and inward in a radial direction of the collar, so that a hollow part of the collar is crimped to a groove while the workpiece is clamped between the collar and a head part, whereby swaging of a fastener is completed while the end region remains integrated with the shaft part. The control part completes swaging of the fastener by terminating a movement of the bolt-gripping part in the first direction relative to the anvil based on driving current of the motor.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: June 29, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Yuki Kawai, Michisada Yabuguchi, Hiroki Ikuta, Toshihito Yabunaka
  • Patent number: 11007565
    Abstract: A fastening tool using a fastener of a type which is configured such that swaging is completed while an end region of a shaft part of a bolt remains integrated with the shaft part, and more particularly, a technique that may help provide a compact device structure while facilitating output management required for swaging, in the fastening tool. The fastening tool is configured to fasten a workpiece with a bolt and a collar without breaking a shaft part of the bolt, and a control part performs swaging operation while controlling the driving current of a motor to become a specified target current value and completes the swaging operation based on rotation speed of the motor.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: May 18, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Michisada Yabuguchi, Toshihito Yabunaka
  • Patent number: 10994325
    Abstract: A fastening tool configured to fasten a workpiece via a multi-piece swage type fastener including a pin and a collar includes an anvil, a pin-gripping part, a driving mechanism, an electric motor, a control part and a housing. The driving mechanism is configured to move the pin-gripping part relative to the anvil in a first direction along an axis so as to cause the anvil to press the collar engaged with a shaft part of the pin in a second direction and in a radially inward direction. An operation mode of the driving mechanism can be selectively switched between a plurality of operation modes including a first mode, in which a process of fastening the workpiece is completed based on a state of the fastener, and a second mode, in which the process of fastening the workpiece is completed based on a driving state of the motor.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: May 4, 2021
    Assignee: MAKITA CORPORATION
    Inventors: Hiroki Ikuta, Toshihito Yabunaka, Takao Kuroyanagi
  • Publication number: 20210069773
    Abstract: A fastening tool includes a housing, a handle, an anvil, a pin-gripping part, a motor, and a driving mechanism. The driving mechanism is configured to move the pin-gripping part along a first axis defining a front-rear direction, relative to the anvil. The driving mechanism includes a rotary member, a movable member, a driving gear and an idler gear. The rotary member has a driven gear formed on its outer periphery and is rotatable around the first axis. The movable member is connected to the pin-gripping part and configured to be linearly moved in the front-rear direction by rotation of the rotary member. The driving gear is configured to be rotated around a second axis extending in parallel to the first axis below the first axis. The idler gear is engaged with the driving gear and the driven gear.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 11, 2021
    Applicant: MAKITA CORPORATION
    Inventors: Toshihito YABUNAKA, Hiroki IKUTA, Takao KUROYANAGI, Koichi YAKABE
  • Publication number: 20200130047
    Abstract: A fastening tool includes a housing, a fastener-abutment part, a pin-gripping part, a motor, a driving mechanism and a handle. The housing extends in a front-rear direction along a driving axis. The driving mechanism is configured to move the pin-gripping part rearward along the driving axis relative to the fastener-abutment part. The driving mechanism includes a rotary member and a movable member configured to linearly move in the front-rear direction when the rotary member is rotationally driven. The handle protrudes downward from the housing and has a trigger. A rotation axis of a motor shaft extends in parallel to the driving axis on a lower side of the driving axis. A virtual plane including the driving axis and the rotation axis passes a center of the handle in a left-right direction. The trigger is disposed between the rotary member and a motor body in the front-rear direction.
    Type: Application
    Filed: June 8, 2018
    Publication date: April 30, 2020
    Applicant: MAKITA CORPORATION
    Inventors: Toshihito YABUNAKA, Hiroki IKUTA, Takao KUROYANAGI
  • Publication number: 20190351477
    Abstract: A fastening tool using a fastener of a type which is configured such that swaging is completed while an end region of a shaft part of a bolt remains integrated with the shaft part, and more particularly, a technique that may help provide a compact device structure while facilitating output management required for swaging, in the fastening tool. The fastening tool is configured to fasten a workpiece with a bolt and a collar without breaking a shaft part of the bolt, and a control part performs swaging operation while controlling the driving current of a motor to become a specified target current value and completes the swaging operation based on rotation speed of the motor.
    Type: Application
    Filed: January 9, 2018
    Publication date: November 21, 2019
    Applicant: MAKITA CORPORATION
    Inventors: Michisada YABUGUCHI, Toshihito YABUNAKA
  • Publication number: 20190314888
    Abstract: A fastening tool configured to fasten a workpiece via a multi-piece swage type fastener including a pin and a collar includes an anvil, a pin-gripping part, a driving mechanism, an electric motor, a control part and a housing. The driving mechanism is configured to move the pin-gripping part relative to the anvil in a first direction along an axis so as to cause the anvil to press the collar engaged with a shaft part of the pin in a second direction and in a radially inward direction. An operation mode of the driving mechanism can be selectively switched between a plurality of operation modes including a first mode, in which a process of fastening the workpiece is completed based on a state of the fastener, and a second mode, in which the process of fastening the workpiece is completed based on a driving state of the motor.
    Type: Application
    Filed: December 19, 2017
    Publication date: October 17, 2019
    Applicant: MAKITA CORPORATION
    Inventors: Hiroki IKUTA, Toshihito YABUNAKA, Takao KUROYANAGI
  • Publication number: 20190283110
    Abstract: A fastening tool includes a bolt-gripping part, an anvil, a motor, and a control part. When the bolt-gripping part grips an end region of a shaft part and moves relative to the anvil in a first direction of a longitudinal-axis direction, the anvil presses a collar fitted onto the shaft part in a second direction opposite to the first direction of the longitudinal-axis direction and inward in a radial direction of the collar, so that a hollow part of the collar is crimped to a groove while the workpiece is clamped between the collar and a head part, whereby swaging of a fastener is completed while the end region remains integrated with the shaft part. The control part completes swaging of the fastener by terminating a movement of the bolt-gripping part in the first direction relative to the anvil based on driving current of the motor.
    Type: Application
    Filed: November 24, 2017
    Publication date: September 19, 2019
    Applicant: MAKITA CORPORATION
    Inventors: Yuki KAWAI, Michisada YABUGUCHI, Hiroki IKUTA, Toshihito YABUNAKA
  • Publication number: 20190283111
    Abstract: A fastening tool includes a fastener-abutment part, a pin-gripping part, a motor, a driving mechanism, an input-accepting part and a motor-control part. The fastener-abutment part is configured to abut on a cylindrical part of a fastener. The pin-gripping part is configured to grip a portion of a pin of the fastener. The driving mechanism is configured to be driven by power of the motor to move the pin-gripping part rearward along a driving axis relative to the fastener-abutment part, thereby fastening a workpiece via the fastener. The input-accepting part is configured to accept setting information for a control condition of the motor inputted via an operation part configured to be externally operated by a user. The motor-control part is configured to control operation of the driving mechanism by controlling driving of the motor according to the control condition based on the setting information accepted by the input-accepting part.
    Type: Application
    Filed: November 24, 2017
    Publication date: September 19, 2019
    Applicant: MAKITA CORPORATION
    Inventors: Yuki KAWAI, Michisada YABUGUCHI, Hiroki IKUTA, Toshihito YABUNAKA
  • Publication number: 20190283112
    Abstract: A fastening tool includes a bolt-gripping part, an anvil, a bolt-gripping-part driving mechanism, a motor, a housing, and thrust rolling bearings. The bolt-gripping-part driving mechanism includes a first mechanism part supported by the housing and a second mechanism part connected to the bolt-gripping part. The second mechanism part is configured to be driven in a longitudinal-axis direction by the first mechanism part being rotationally driven, so that the bolt-gripping part is moved in the longitudinal-axis direction relative to the anvil. The thrust rolling bearings are disposed on a first direction side and a second direction side of the first mechanism part, respectively.
    Type: Application
    Filed: November 24, 2017
    Publication date: September 19, 2019
    Applicant: MAKITA CORPORATION
    Inventors: Hiroki IKUTA, Toshihito YABUNAKA, Takao KUROYANAGI