公开(公告)号：US20240024882A1

公开(公告)日：2024-01-25

申请号：US18265501

申请日：2021-10-25

Applicant: MAKITA CORPORATION

Inventor： Koichi YAKABE ,  Hiroki IKUTA ,  Toshihito YABUNAKA

IPC: B02C1/06

CPC classification number: B02C1/06

Abstract: To provide a construction technique of a stone material crushing tool which can prevent complication of working environment. An electrically-driven stone material crushing tool including a motor having an output shaft, a motion converting mechanism to convert a rotating movement from the output shaft to a linear movement, and a crushing member to crush the stone material by clamping by means of the linear movement of the motion converting mechanism.

公开(公告)号：US20230141074A1

公开(公告)日：2023-05-11

申请号：US17961138

申请日：2022-10-06

Applicant: MAKITA CORPORATION

Inventor： Koichi YAKABE ,  Hiroki IKUTA

IPC: B21D39/20 ,  B21D41/02 ,  B29C57/04

CPC classification number: B21D39/20 ,  B21D41/026 ,  B29C57/04

Abstract: A pipe expanding tool includes a wedge, a plurality of jaws, a spring and a first rotary member. The wedge is movable in a reciprocating manner between a first position and a second position along a first axis. The jaws are rotatable around the first axis and movable to a closed position and to an open position. The jaws are configured to move from the closed position to the open position as the wedge moves from the first position to the second position, and to move from the open position to the closed position as the wedge moves from the second position to the first position. The first rotary member is engaged with the jaws such that the first rotary member is integrally rotatable with the jaws, and is configured to be rotated only in one direction around the first axis by an elastic force of the spring.

公开(公告)号：US20220152792A1

公开(公告)日：2022-05-19

申请号：US17439428

申请日：2020-04-10

Applicant: MAKITA CORPORATION

Inventor： Hiroki IKUTA ,  Ryo IMUTA

IPC: B25B21/00 ,  B25B23/14

Abstract: A screw-tightening tool includes a housing, a spindle, a motor, and a power-transmitting mechanism including a sun member, a ring member, a carrier member and a planetary roller. The power-transmitting mechanism is configured such that, when the ring member moves rearward to be closer to the sun member in response to rearward movement of the spindle, the planetary roller transmits power of the motor to the spindle owing to frictional force between the planetary roller and each of a first tapered surface of the sun member and a second tapered surface of the ring member. The sun member is configured to move from a first position to a second position, which is forward of the first position, when the frictional force reaches a threshold, and to move from the second position to the first position when the frictional force falls below the threshold.

公开(公告)号：US20190152039A1

公开(公告)日：2019-05-23

申请号：US16097696

申请日：2017-05-10

Applicant: MAKITA CORPORATION

Inventor： Hiroki IKUTA ,  Hikaru SUNABE

IPC: B25D17/11 ,  B25D11/06 ,  B25D17/24

Abstract: An impact tool includes a tool-accessory holding part, a body and a first hammering member. The tool-accessory holding part has a through hole extending in a hammering-axis direction and is configured to hold the tool accessory inserted into the through hole to be movable in the hammering-axis direction. The body is connected to the tool-accessory holding part in the hammering-axis direction and has an internal space communicating with the through hole. The first hammering member is linearly movable in the hammering-axis direction and configured to drive the tool accessory in the hammering-axis direction by colliding with the tool accessory. The tool-accessory holding part and the body are connected in the hammering-axis direction via a first elastic element to be movable relative to each other. A second elastic element is interposed between the first hammering member and the body in a radial direction with respect to the hammering axis.

公开(公告)号：US20230027337A1

公开(公告)日：2023-01-26

申请号：US17856692

申请日：2022-07-01

Applicant: MAKITA CORPORATION

Inventor： Hiroki IKUTA ,  Yosuke NAOI

IPC: F16H3/00 ,  F16H57/08 ,  A01G3/053

Abstract: A power tool includes a motor, a speed reducer and a speed-reducing-ratio change mechanism. The speed reducer includes planetary gear mechanisms arranged in multiple stages. The speed-reducing-ratio change mechanism is configured to change a speed reducing ratio of the speed reducer in response to a change of a rotating direction of a motor shaft. At least two stages of the planetary gear mechanisms are configured such that an internal gear in each stage selectively functions as a fixed element. The speed-reducing-ratio change mechanism includes a one-way clutch and a lock mechanism configured to non-rotatably lock the internal gears of the at least two stages when the one-way clutch does not transmit rotation, and to rotate the internal gears of the at least two stages when the one-way clutch transmits rotation. The at least two stages include a speed-increasing planetary gear mechanism and a speed-reducing planetary gear mechanism.

公开(公告)号：US20220324012A1

公开(公告)日：2022-10-13

申请号：US17845186

申请日：2022-06-21

Applicant: MAKITA CORPORATION

Inventor： Toshihito YABUNAKA ,  Hiroki IKUTA ,  Takao KUROYANAGI ,  Koichi YAKABE

IPC: B21J15/10 ,  B21J15/28 ,  B21J15/26

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.

公开(公告)号：US20210394254A1

公开(公告)日：2021-12-23

申请号：US17342032

申请日：2021-06-08

Applicant: MAKITA CORPORATION

Inventor： Toshihito YABUNAKA ,  Hiroki IKUTA ,  Koichi YAKABE ,  Takao KUROYANAGI

IPC: B21J15/26 ,  B21J15/10 ,  B21J15/32 ,  B21J15/02

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.

公开(公告)号：US20210146497A1

公开(公告)日：2021-05-20

申请号：US16624066

申请日：2018-06-12

Applicant: MAKITA CORPORATION

Inventor： Hiroki IKUTA

IPC: B24B23/02

Abstract: A work tool includes a motor, a tool-mounting part, a rotary shaft, a rotating member, a switch, an operation member and a lock mechanism. The rotating member is held rotatably around a rotation axis of the rotary shaft and configured to transmit torque to and from the rotary shaft while being allowed to rotate relative to the rotary shaft. The rotating member is configured to rotate together with the rotary shaft by action of transmitting the torque when the operation member is moved from the OFF position to the ON position and the lock mechanism allows the rotating member to rotate, and configured to apply a braking force to the rotary shaft by action of transmitting the torque when the operation member is moved from the ON position to the OFF position and the lock mechanism non-rotatably locks the rotating member.

公开(公告)号：US20210069773A1

公开(公告)日：2021-03-11

申请号：US17003306

申请日：2020-08-26

Applicant: MAKITA CORPORATION

Inventor： Toshihito YABUNAKA ,  Hiroki IKUTA ,  Takao KUROYANAGI ,  Koichi YAKABE

IPC: B21J15/10 ,  B21J15/26 ,  B21J15/28

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.

公开(公告)号：US20180311801A1

公开(公告)日：2018-11-01

申请号：US15897711

申请日：2018-02-15

Applicant: MAKITA CORPORATION

Inventor： Hiroki IKUTA

IPC: B25B23/00 ,  B25B21/00 ,  B25F5/00

CPC classification number: B25B23/0064 ,  B25B21/00 ,  B25B23/0028 ,  B25F5/001 ,  B25F5/003

Abstract: A power screwdriver may include a main body including a bit drive device configured to rotate a driver bit. A screw may be attached to the driver bit. The power screwdriver may further include a locator attached to the main body and configured to adjust a driving depth of the screw into a workpiece. The locator may include a contact member including a contact surface for contacting with the surface of the workpiece. An orientation adjusting device may adjust the orientation of the contact member relative to the main body or the axial direction of the driver bit.