公开(公告)号：US20240181609A1

公开(公告)日：2024-06-06

申请号：US18439466

申请日：2024-02-12

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Mitchell Carlson ,  Ding Feng Hu ,  Zhiqiang Yu ,  Fanbin Zeng

IPC: B25B21/02 ,  B25F5/02

CPC classification number: B25B21/026 ,  B25F5/02

Abstract: An impact power tool includes a motor, an output shaft to which a tool bit is attachable for performing work on a workpiece, and an impact mechanism disposed between the motor and the output shaft for converting a continuous torque output from the motor to discrete pulses of torque upon the output shaft, the impact mechanism including a cylinder assembly, a cavity defined within the cylinder assembly containing a hydraulic fluid, and a collapsible member having a first end and a second end opposite the first end. The collapsible member is maintained in a shape coinciding with that of the cavity by fitment within the cavity, with the first and second ends being disconnected from each other. The collapsible member is collapsible to compensate for thermal expansion of the hydraulic fluid during operation of the impact mechanism.

公开(公告)号：US20240399545A1

公开(公告)日：2024-12-05

申请号：US18734996

申请日：2024-06-05

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Evan Brown ,  Jordan P. Gilsinger ,  Fanbin Zeng ,  Jian Huang ,  Hong Feng Liu ,  Zipei Zhang

IPC: B25B21/00 ,  B25B13/46

Abstract: A ratchet assembly is configured to rotate a fastener in both a clockwise and counter-clockwise direction. The ratchet assembly includes a yoke, a drive, a left pawl, a right pawl, and a shuttle assembly. The yoke defines a fastening hole. The drive is rotatably coupled to the yoke and is supported in the fastening hole. The left pawl is supported in the yoke and is biased toward the drive by a first biasing member. The right pawl is supported in the yoke and is biased toward the drive by a second biasing member. The shuttle assembly is rotatably supported in the yoke between the left and right pawls and selectively engages the left and right pawl. The directional knob is coupled to the shuttle assembly.

公开(公告)号：US11897095B2

公开(公告)日：2024-02-13

申请号：US17408898

申请日：2021-08-23

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Mitchell Carlson ,  Ding Feng Hu ,  Zhiqiang Yu ,  Fanbin Zeng

IPC: B25B21/02 ,  B25F5/02

CPC classification number: B25B21/026 ,  B25F5/02

Abstract: A rotary power tool includes a main housing and a transmission housing coupled to the main housing. The transmission housing includes a bearing pocket open to a front of the transmission housing and defined at least partially by a radially inward-extending flange. The rotary power tool also includes an output shaft and a bearing positioned within the bearing pocket adjacent and in abutting relationship with the radially inward-extending flange for rotatably supporting the output shaft in the transmission housing. The rotary power tool also includes a radially outward-extending flange on the output shaft that radially overlaps at least a portion of the bearing on an opposite side of the bearing as the radially inward-extending flange. A line of action of an axial reaction force applied to the output shaft is directed to the transmission housing via the radially outwardly-extending flange, the bearing, and the radially inward-extending flange.

公开(公告)号：US11097403B2

公开(公告)日：2021-08-24

申请号：US16309625

申请日：2017-08-25

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Mitchell Carlson ,  Ding Feng Hu ,  Zhiqiang Yu ,  Fanbin Zeng

IPC: B25B21/02 ,  B25F5/02

Abstract: A rotary power tool includes a main housing and a transmission housing coupled to the main housing. The transmission housing includes a bearing pocket open to a front of the transmission housing and defined at least partially by a radially inward-extending flange. The rotary power tool also includes an output shaft and a bearing positioned within the bearing pocket adjacent and in abutting relationship with the radially inward-extending flange for rotatably supporting the output shaft in the transmission housing. The rotary power tool also includes a radially outward-extending flange on the output shaft that radially overlaps at least a portion of the bearing on an opposite side of the bearing as the radially inward-extending flange. A line of action of an axial reaction force applied to the output shaft is directed to the transmission housing via the radially outwardly-extending flange, the bearing, and the radially inward-extending flange.