公开(公告)号：US12151350B2

公开(公告)日：2024-11-26

申请号：US18304410

申请日：2023-04-21

Applicant: MAKITA CORPORATION

Inventor： Masaya Nagao ,  Norikazu Baba ,  Shun Kuriki ,  Kazusa Fukuda

IPC: B25C1/04 ,  B25C1/06

Abstract: An elastic member is disposed between an internal gear of a gear train and a gear housing. A force is applied to the gear train when a lift mechanism is activated. The force is received and absorbed by the elastic member, thereby reducing the amount of force received by the gear housing.

公开(公告)号：US12251807B2

公开(公告)日：2025-03-18

申请号：US18141718

申请日：2023-05-01

Applicant: MAKITA CORPORATION

Inventor： Norikazu Baba ,  Shun Kuriki ,  Kazusa Fukuda ,  Masaya Nagao

IPC: B25C1/04 ,  B25C1/06

Abstract: A driving tool includes a piston configured to move in a driving direction due to gas pressure, and a driver configured to move integrally with the piston to strike a fastener. The driver includes a plurality of rack teeth formed along a driving direction. The driving tool includes a wheel having a plurality of engaging portions to engage the plurality of rack teeth at its outer circumference. The driver is moved in a counter-driving direction as the wheel rotates. The plurality of engaging portions of the wheel includes at least one advancing/retracting engaging portion configured to move with respect to a shaft member of the wheel. The driver has a tooth groove between adjacent rack teeth of the plurality of rack teeth. One tooth groove is configured to receive the advancing/retracting engaging portion and has a depth deeper than at least one other tooth groove.

公开(公告)号：US12246422B2

公开(公告)日：2025-03-11

申请号：US18227020

申请日：2023-07-27

Applicant: MAKITA CORPORATION

Inventor： Nobuyuki Hoshiyama ,  Masaya Nagao

IPC: B25C1/04 ,  B25C1/06

Abstract: A driving tool has a configuration for preventing deviation of a driving posture of driving members from intended position during a use. The driving tool has a guide member supplied to a driving passage and a relief passage for an engagement portion of a driver to pass. The relief passage is therefore blocked by the guide member, stabilizing a driving posture of the driving member. The guide member is then pushed by a lowermost engagement portion of the driver so as to be retreaded from the relief passage, thereby allowing the engagement portion to move downward in the relief passage.

公开(公告)号：US12023790B2

公开(公告)日：2024-07-02

申请号：US17951412

申请日：2022-09-23

Applicant: MAKITA CORPORATION

Inventor： Kazusa Fukuda ,  Masaya Nagao ,  Kiyonobu Yoshikane ,  Toshiro Hirayama

IPC: B25C1/04

CPC classification number: B25C1/041 ,  B25C1/047

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.

公开(公告)号：US11981005B2

公开(公告)日：2024-05-14

申请号：US17953420

申请日：2022-09-27

Applicant: MAKITA CORPORATION

Inventor： Shun Kuriki ,  Masaya Nagao ,  Kiyonobu Yoshikane ,  Toshiro Hirayama

IPC: B25C1/04 ,  B25C1/06

CPC classification number: B25C1/047 ,  B25C1/06

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.