Patents by Inventor Kiyonobu Yoshikane

Kiyonobu Yoshikane 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).

  • Publication number: 20250010445
    Abstract: A driving tool comprises a tool main body that includes a driver for driving a U-shaped staple, and a main magazine for housing a plurality of staples that extends from the tool main body. The driving tool also comprises a sub-magazine to which a pusher and a staple guide are attachable. The pusher pushes the staples in the main magazine toward the tool main body. The staple guide is inserted between a pair of legs of the staple in the main magazine. The driving tool also comprises a guide mechanism for guiding the sub-magazine toward the tool main body from an opening position to a closing position with respect to the main magazine. The guide mechanism also guides the sub-magazine in a direction opposite to a driving direction while the sub-magazine moves from the opening position to the closing position.
    Type: Application
    Filed: May 10, 2024
    Publication date: January 9, 2025
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Makito TERAMOTO
  • Publication number: 20240391077
    Abstract: A hammer drill includes a boss sleeve rotatably and externally mounted to an intermediate shaft separately from the intermediate shaft. The boss sleeve includes a rod coupled to a rear end of a piston cylinder via a swash bearing. The boss sleeve is configured to rotate to convert a rotation of the intermediate shaft into a reciprocating motion in a front-rear direction of the rod and transmit the reciprocating motion to the piston cylinder. The hammer drill includes a second clutch disposed at the intermediate shaft. By performing a switch operation of a slide position of the second clutch, a hammer mode in which the second clutch is engaged with the boss sleeve to reciprocate the piston cylinder back and forth and another operation mode are selectable. The boss sleeve is rotatably cantilevered not to be in contact with the intermediate shaft by an inner housing via a bearing.
    Type: Application
    Filed: May 13, 2024
    Publication date: November 28, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Mizuki YAMAMOTO, Yoshitaka MACHIDA, Yusuke TAKANO
  • Patent number: 12109634
    Abstract: A power tool comprises a motor, a final output shaft, a tool body, a detection device, and a braking device. The motor has a motor body including a stator and a rotor, and a motor shaft extending from the rotor and being rotatable around a first rotational axis. The final output shaft is configured to be rotationally driven around a second rotational axis by torque transmitted from the motor shaft. The tool body houses the motor and the final output shaft. The detection device is configured to detect a locking state of the final output shaft. The braking device is configured to directly act on the motor shaft to brake the motor shaft in response to detection of the locking state.
    Type: Grant
    Filed: May 24, 2022
    Date of Patent: October 8, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kiyonobu Yoshikane, Yoshitaka Machida, Kazuki Nakagawa
  • Patent number: 12090617
    Abstract: A power tool, such as a hammer drill (100), has first and second battery mount parts (160A, 160B) that are aligned in a longitudinal direction of the power tool. First and second batteries (170A, 170B) are mountable thereon in series along a straight line that extends in the longitudinal direction. The first battery (170A) is mounted on the first battery mount part (160A) by sliding along the straight line towards the second battery mount part (160B). The second battery (170B) is mounted on the second battery mount part (170B) by sliding along the straight line towards the first battery mount part (170A).
    Type: Grant
    Filed: January 31, 2023
    Date of Patent: September 17, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kiyonobu Yoshikane, Hajime Takeuchi, Yoshiro Tada, Masanori Furusawa, Masao Miwa, Shinji Onoda, Yoshitaka Machida
  • Patent number: 12090591
    Abstract: A dust collection cup allows a bit tip to be viewable without being detached or replaced. A dust collection cup is attachable to a front cylindrical portion of a hammer drill. The dust collection cup in an attached state allows a bit attached to the front cylindrical portion to extend through the dust collection cup. The dust collection cup includes an attachment attachable to the front cylindrical portion, and a body connectable to the attachment. The body includes an extendable unit including at least a portion in an axial direction retaining a predetermined length.
    Type: Grant
    Filed: February 10, 2023
    Date of Patent: September 17, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Mizuki Yamamoto, Yoshitaka Machida, Kiyonobu Yoshikane
  • Publication number: 20240300081
    Abstract: A lock member is slidably provided in a pusher that pushes driven members in a feed direction. An engaging portion of the lock member engages a locking portion of a contact arm to restrict an ON operation of the contact arm. The lock member is relatively retracted against a lock biasing member when the engaging portion is pressed against the contact arm.
    Type: Application
    Filed: January 8, 2024
    Publication date: September 12, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Norikazu BABA, Shun KURIKI, Kiyonobu YOSHIKANE, Toshiya MURAKAMI
  • Publication number: 20240300078
    Abstract: A driving tool has a tool body with a driving channel. A magazine is attached to the tool body. A pusher biases driven members inside the magazine toward the driving channel. The driver strikes one of the driven members fed in the driving channel. A blank drive preventing mechanism restricts a driving operation of the driver when a number of driven members inside the magazine is less than or equal to a predetermined number. The resistance-applying member applies resistance to the driven members remaining inside the magazine when the blank drive preventing mechanism is actuated and maintains the orientation of the driven members. The resistance-applying member is provided at a location corresponding to the shortest available driven member.
    Type: Application
    Filed: February 29, 2024
    Publication date: September 12, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Makito TERAMOTO
  • Publication number: 20240300079
    Abstract: A driving tool includes a driver moving along a driving passage and a lift mechanism for moving the driver. The driving tool includes a pusher and an idling strike prevention mechanism interlocking with a position of the pusher. The pusher pushes a driving member from a side opposite to a first end surface of a tool main body such that the driving member contacts a tip end of the driver at a standby position. When the driver moves from the standby position to a top dead center, the pusher supplies the driving member to the driving passage. After that, the driver moves downward to a driving position to drive the driving member. When no driving member is left, the idling strike prevention mechanism restricts activation of the driving tool in interlocking with the pusher such that the pusher moves to an activation restriction on a side of the driving passage.
    Type: Application
    Filed: March 1, 2024
    Publication date: September 12, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Shun KURIKI, Makito TERAMOTO
  • Publication number: 20240278399
    Abstract: A driving tool includes a feeder that successively loads a driving member to a loading position. A driver moves downward in a driving direction to drive the driving member loaded to the loading position. A plurality of driving members are combined in parallel by a flexible member. A lifter engages the driver to move the driver upward in a direction opposite to the driving direction. A position detection sensor detects a rotation position of the lifter to detect a position of the driver. A controller determines that a tip end of the driver is positioned above the loading position according to a signal from the position detection sensor. The controller loads the driving member via the feeder.
    Type: Application
    Filed: February 14, 2024
    Publication date: August 22, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Yoshitaka AKIBA, Kiyonobu YOSHIKANE, Tatsuya IKEDO
  • Publication number: 20240246212
    Abstract: An engaging portion of a driver has an engaging portion front surface coplanar with a striking portion front surface and an engaging portion rear surface coplanar with a striking portion rear surface. The engaging portion has an engagement surface that is parallel to a rotation axis of a lifter.
    Type: Application
    Filed: December 15, 2023
    Publication date: July 25, 2024
    Applicant: Makita Corporation
    Inventors: Kiyonobu Yoshikane, Shun Kuriki
  • Publication number: 20240246214
    Abstract: A driving tool includes a head-guide surface and a pair of leg-guide grooves, both are formed in a driving passage extending in a driving direction. The head-guide surface slidably guides a head of a U-shaped driving member. Each of the pair of leg-guide grooves is recessed from the head-guide surface toward a side of a first end surface of a tool main body. Legs of the driving member enter the leg-guide grooves. The driving member is driven in an inclined posture in which the legs enter the leg-guide groove, thereby avoiding a slipping off posture in which a driver is deviated from the driving member owing to a reaction force occurred when the driving member is driven by the driver.
    Type: Application
    Filed: January 4, 2024
    Publication date: July 25, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Makito TERAMOTO
  • Patent number: 12023790
    Abstract: A driving tool comprises a cylinder extending in an up-down direction and a piston that moves downward within the cylinder due to a compressed gas to drive a driving member. The driving tool further comprises a main body housing that houses the cylinder and a grip extending rearward from a rear surface of the main body housing. The driving tool further comprises an upper chamber that is provided above the cylinder and communicates with the cylinder. The driving tool further comprises an air chamber that extends downward from the upper chamber and that extends only in an area on a right or left side of the main body housing with respect to both an axis center of the cylinder and an axis center of the grip.
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: July 2, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kazusa Fukuda, Masaya Nagao, Kiyonobu Yoshikane, Toshiro Hirayama
  • Publication number: 20240181616
    Abstract: A two-member joint structure driver of a driving tool includes a striker and an engagement member. A channel to guide the striker and a release channel for the engaging section of the engagement member to pass through are shifted in a thickness direction of the driver. The width of the guide channel is expanded, and wider striker can be used without expanding the release channel. The cost of the driver can be reduced by having the two-member joint structure.
    Type: Application
    Filed: November 17, 2023
    Publication date: June 6, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Junpei KAMIMOTO
  • Patent number: 11981005
    Abstract: A rotary shaft is spline coupled to a carrier of a final-stage planetary gear mechanism. A bearing for supporting the rotary shaft is arranged on an outer circumferential side of the carrier. The bearing and the carrier are arranged so as to overlap in a direction perpendicular to a motor axis.
    Type: Grant
    Filed: September 27, 2022
    Date of Patent: May 14, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Shun Kuriki, Masaya Nagao, Kiyonobu Yoshikane, Toshiro Hirayama
  • Publication number: 20240116161
    Abstract: A power tool includes a motor, a driving mechanism, a main housing, a handle housing, a first guide part and a second guide part. The handle housing is movable relative to the main housing at least in a front-rear direction. The first and second guide parts are configured to guide relative sliding between the main housing and the handle housing in the front-rear direction. Each of the first guide part and the second guide part includes a first engagement part and a second engagement part engaged with each other to be slidable in the front-rear direction. The main housing has the first engagement part. The handle housing has the second engagement part. The second guide part is spaced apart from the first guide part and located rearward of the first guide part in the front-rear direction.
    Type: Application
    Filed: December 18, 2023
    Publication date: April 11, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Yoshiro Tada
  • Publication number: 20240100675
    Abstract: A hammer drill includes a housing inside which a motor, a tubular tool holder, a driving mechanism, a rotation conversion member, and an inner housing are disposed. The driving mechanism is configured to perform at least one of rotation actuation of the tool holder and hammering actuation of a bit. The inner housing supports the driving mechanism, supports the tool holder via a first bearing, and supports an output shaft via a second bearing. The inner housing is divided into a front housing holding the first bearing and a rear housing that is formed in a separate body from the front housing and holds the second bearing. The inner housing is formed by connecting the front housing to the rear housing in an axis line direction of the tool holder. A seal member sealing outside space of the inner housing inside the housing is disposed in the front housing.
    Type: Application
    Filed: December 8, 2023
    Publication date: March 28, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Yoshitaka MACHIDA, Kiyonobu YOSHIKANE
  • Publication number: 20240082973
    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: Application
    Filed: November 22, 2023
    Publication date: March 14, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Kiyonobu YOSHIKANE, Hiroki TAKESASHI
  • Patent number: 11926030
    Abstract: A power tool includes a motor, a driving mechanism, a main housing, a handle housing, a first guide part and a second guide part. The handle housing is movable relative to the main housing at least in a front-rear direction. The first and second guide parts are configured to guide relative sliding between the main housing and the handle housing in the front-rear direction. Each of the first guide part and the second guide part includes a first engagement part and a second engagement part engaged with each other to be slidable in the front-rear direction. The main housing has the first engagement part. The handle housing has the second engagement part. The second guide part is spaced apart from the first guide part and located rearward of the first guide part in the front-rear direction.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: March 12, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Kiyonobu Yoshikane, Yoshiro Tada
  • Patent number: 11904447
    Abstract: A driving tool includes a piston, a driver, and a lift mechanism. The piston moves in a driving direction by a pressure of a gas. The driver extends from the piston and includes a plurality of engaged portions. The lift mechanism moves the driver in a direction opposite to the driving direction. The lift mechanism includes a rotation shaft, a wheel, a plurality of engaging portions, and a supporting member. The wheel rotates integrally with the rotation shaft. Each of the plurality of engaging portions may engage an engaged portion. The supporting member supports the wheel so the wheel is allowed to move between an initial position and an eccentric position in a radial direction of the rotation shaft.
    Type: Grant
    Filed: September 16, 2022
    Date of Patent: February 20, 2024
    Assignee: MAKITA CORPORATION
    Inventors: Norikazu Baba, Shun Kuriki, Kiyonobu Yoshikane
  • Publication number: 20240051103
    Abstract: A driving tool for improving shock absorbability and durability of a tubular damper, the driving tool comprising a cylinder and a piston that moves inside the cylinder owing to a gas pressure. The driving tool further comprises a driver main body to drive a driving member by moving integrally with the piston, and a lift mechanism having a wheel for the driver main body to return to original position. The driver main body is arranged such that a width center line of the driver main body is offset in a direction away from the lift mechanism with respect to a width center line of the piston.
    Type: Application
    Filed: July 11, 2023
    Publication date: February 15, 2024
    Applicant: MAKITA CORPORATION
    Inventors: Shun KURIKI, Kiyonobu YOSHIKANE, Masaya NAGAO