公开(公告)号：US20240367245A1

公开(公告)日：2024-11-07

申请号：US18777151

申请日：2024-07-18

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： James C. Sitter ,  Kevin Staszak ,  David A. Bierdeman ,  Kevin R. Gee

IPC: B23D53/12

Abstract: A handheld band saw includes a housing, a handle supported by the housing and configured to be grasped by a user during a cutting operation, and a motor supported by the housing. The band saw further includes a drive wheel assembly that is at least partially disposed within the housing and a saw blade driven by the drive wheel assembly. The band saw further includes a drive assembly positioned between the motor and the drive wheel assembly. The drive assembly is configured to transfer torque from the motor to the drive wheel assembly, causing the drive wheel assembly and the saw blade to rotate. The drive wheel assembly includes a wheel having a recess in which a portion of the drive assembly is received to shorten an overall length of the motor, drive assembly, and drive wheel assembly.

公开(公告)号：US12097603B2

公开(公告)日：2024-09-24

申请号：US17620492

申请日：2021-06-10

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Jeffrey S. Holly ,  Jacob N. Zimmerman ,  James C. Sitter ,  David A. Bierdeman ,  Andrew R. Schauer ,  Michael J. Panetta ,  You Gen Liu

IPC: B21F5/00 ,  B25F5/02 ,  F21V33/00 ,  B23D59/00 ,  B27B19/00 ,  F21Y115/10

CPC classification number: B25F5/021 ,  F21V33/0084 ,  B23D59/00 ,  B27B19/006 ,  F21Y2115/10

Abstract: An oscillating power tool has a housing including a handle portion defining a handle axis and a head portion defining an output axis that is perpendicular to the handle axis. The head portion includes a front face intersected by the handle axis. A drive mechanism includes an output shaft configured to oscillate about the output axis in a rotational manner in response receiving torque from a motor. A lighting assembly is configured to illuminate a workpiece in front of the head portion of the housing. The lighting assembly includes a lens arranged on the front face of the housing, a holder coupled to the lens, a plurality of printed circuit boards supported by the holder, and an LED arranged on each of the printed circuit boards. In response to being activated, the LEDs are configured to project a wide-angle beam of light through the lens.

公开(公告)号：US20240308042A1

公开(公告)日：2024-09-19

申请号：US18577004

申请日：2022-07-15

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： David A. Bierdeman ,  Troy C. Thorson ,  Jacob N. Zimmerman ,  Andrew R. Wyler ,  Travis W. Leathrum ,  David C. Graf ,  Alex J. Brasel

IPC: B25C1/04 ,  B25C1/00 ,  B25C1/06

CPC classification number: B25C1/047 ,  B25C1/008 ,  B25C1/06

Abstract: A gas spring-powered fastener driver includes a cylinder, a storage chamber cylinder having pressurized air in communication with the cylinder, a moveable piston positioned within the cylinder, a driver blade attached to the piston and movable therewith between a top-dead-center position and a bottom-dead-center position, the driver blade defining a driving axis, a lifter operable to move the driver blade from the bottom-dead-center position toward the top-dead-center position, the lifter is configured to engage the driver blade when moving the driver blade from the bottom-dead-center position toward the top-dead-center position, a bumper positioned beneath the piston in a vertical direction to absorb impact energy from the piston, and a valve positioned in the storage chamber cylinder. In response to the piston compressing the bumper while absorbing impact energy from the piston, the valve adds pressurized air from the cylinder to the storage chamber cylinder.

公开(公告)号：US20230122029A1

公开(公告)日：2023-04-20

申请号：US18068576

申请日：2022-12-20

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： David A. Bierdeman ,  Troy C. Thorson ,  Jacob N. Zimmerman ,  Andrew R. Wyler ,  Travis W. Leathrum ,  David C. Graf ,  Alex J. Brasel

IPC: B25C1/00 ,  B25C1/04

Abstract: A gas spring-powered fastener driver includes a cylinder, a storage chamber cylinder having pressurized air in communication with the cylinder, a moveable piston positioned within the cylinder, a driver blade extending from a first side of the piston and movable therewith between a top-dead-center position and a bottom-dead-center position, a one-way seal carried onboard the piston and disposed between the piston and the cylinder, the one-way seal being configured permit a bypass flow of pressurized air from the first side of the piston, past the one-way seal, and into a space within the cylinder adjacent an opposite, second side of the piston during movement of the piston and driver blade from the top-dead-center position to the bottom-dead-center position, thereby increasing a pressure of the pressurized air within the cylinder and storage chamber cylinder, and a pressure relief valve in fluid communication with the storage chamber cylinder.

公开(公告)号：US11618145B2

公开(公告)日：2023-04-04

申请号：US17154389

申请日：2021-01-21

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： David A. Bierdeman ,  Mackenzie J. Nick ,  Beth E. Cholst ,  Troy C. Thorson ,  Nathan Bandy ,  Jacob P. Schneider

IPC: B25C1/04 ,  B25C1/06

Abstract: A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position to a driven or bottom-dead-center (BDC) position for driving a fastener into a workpiece and a drive unit for providing torque to move the driver blade from the BDC position toward the TDC position. The drive unit includes an output shaft. The powered fastener driver also includes a rotary lifter engageable with the driver blade. The lifter is configured to receive torque from the drive unit in a first rotational direction for returning the driver blade from the BDC position toward the TDC position. The powered fastener driver further includes a kickout arrangement located between the lifter and the output shaft. The kickout arrangement is configured to permit limited rotation of the lifter relative to the output shaft between a first position and a second position.

公开(公告)号：US11571794B2

公开(公告)日：2023-02-07

申请号：US17719855

申请日：2022-04-13

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： David A. Bierdeman ,  Troy C. Thorson ,  Jacob P. Schneider ,  Mackenzie J. Nick ,  Nathan Bandy ,  Travis W. Leathrum ,  Mitchell T. Neuhoff ,  Mark C. Hughes ,  David C. Graf ,  Marcus Wechselberger ,  Leonard F. Mikat-Stevens ,  Jacob N. Zimmerman ,  Jason M. Julius ,  Rosalie C. Phillips ,  Beth E. Cholst

IPC: B25C1/04 ,  B25C1/06

Abstract: A powered fastener driver includes a driver blade movable from a top-dead-center position to a bottom-dead-center position for driving a fastener into a workpiece, a drive unit for providing torque to move the driver blade toward the top-dead-center position, and a rotary lifter engageable with the driver blade. The lifter having a body and a drive pin coupled to the body. A roller is positioned on the drive pin and engages with a tooth of the driver blade when moving the driver blade from the bottom-dead-center position toward the top-dead-center position. The roller includes a first engagement section that receives an end portion of the tooth and a second engagement section. An engagement member engages the second engagement section for aligning the first engagement section of the roller with the end portion of the tooth to facilitate meshing between the end portion of the tooth and the roller.

公开(公告)号：US20220388135A1

公开(公告)日：2022-12-08

申请号：US17830675

申请日：2022-06-02

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Mitchell T. Neuhoff ,  Jason M. Julius ,  David A. Bierdeman ,  Logan M. Hietpas ,  Jacob N. Zimmerman ,  Jeremy J. Keifenheim

IPC: B25C1/04 ,  F16J15/3284

Abstract: A powered fastener driver includes a housing, a cylinder supported by the housing, and a moveable piston positioned within and moveable along a driving axis of the cylinder. The piston includes a circumferential groove on an outer peripheral surface thereof. A driver blade is attached to the piston and moveable therewith between a top-dead-center (TDC) position and a driven or bottom-dead-center (BDC) position. A seal assembly is received in the circumferential groove. The seal assembly is configured to create a seal between the piston and the cylinder. The seal assembly includes a biasing member and a seal member positioned radially outwardly of the biasing member relative to the driving axis.

公开(公告)号：US11498194B2

公开(公告)日：2022-11-15

申请号：US16696818

申请日：2019-11-26

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： Marcus Wechselberger ,  Troy C. Thorson ,  David A. Bierdeman

IPC: B25C1/06 ,  B25C1/04

Abstract: A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position toward a driven or bottom-dead-center (BDC) position, a gas spring mechanism for driving the driver blade toward the BDC position, a lifter assembly having a rotary lifter for returning the driver blade from the BDC position toward the TDC position, and an arm upon which the rotary lifter is supported. The fastener driver also includes a motor which, in a first position of the rotary lifter, provides torque to the rotary lifter to return the driver blade from the BDC position toward the TDC position. The fastener driver further includes a brake mechanism which, when activated, redirects torque from the motor away from the rotary lifter and toward the arm, causing the lifter assembly to move from the first position toward a second position in which the rotary lifter is not engageable with the driver blade.

公开(公告)号：US11331781B2

公开(公告)日：2022-05-17

申请号：US17052463

申请日：2020-06-15

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： David A. Bierdeman ,  Mackenzie J. Nick ,  Beth E. Cholst ,  Troy C. Thorson ,  Nathan Bandy ,  Jacob P. Schneider

IPC: B25C1/04 ,  B25C1/06

Abstract: A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position to a driven or bottom-dead-center (BDC) position for driving a fastener into a workpiece and a drive unit for providing torque to move the driver blade from the BDC position toward the TDC position. The drive unit includes an output shaft. The powered fastener driver also includes a rotary lifter engageable with the driver blade. The lifter is configured to receive torque from the drive unit in a first rotational direction for returning the driver blade from the BDC position toward the TDC position. The powered fastener driver further includes a kickout arrangement located between the lifter and the output shaft. The kickout arrangement is configured to permit limited rotation of the lifter relative to the output shaft between a first position and a second position.

公开(公告)号：US20200276660A1

公开(公告)日：2020-09-03

申请号：US16801679

申请日：2020-02-26

Applicant: MILWAUKEE ELECTRIC TOOL CORPORATION

Inventor： James C. Sitter ,  Kevin Staszak ,  David A. Bierdeman ,  Kevin R. Gee

IPC: B23D53/12

Abstract: A handheld band saw includes a housing, a handle coupled to the housing and configured to be grasped by a user during a cutting operation, a motor supported by the housing, and a drive wheel assembly rotationally driven by the motor. The drive wheel assembly at least partially disposed within the housing. The band saw further includes a saw blade driven by the drive wheel assembly. The saw blade is configured to cut a workpiece during the cutting operation. The band saw further includes a pipe reamer attachment coupled to the drive wheel assembly. The pipe reamer attachment is configured to deburr the workpiece after completion of the cutting operation.