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公开(公告)号：US11724376B2
公开(公告)日：2023-08-15
申请号：US17962037
申请日：2022-10-07
摘要： 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.
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公开(公告)号：US11577372B2
公开(公告)日：2023-02-14
申请号：US17719869
申请日：2022-04-13
发明人： 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
摘要： 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 rotary lifter having a body and a drive pin coupled to the body. A roller is rotatably coupled to the drive pin and includes a non-cylindrical outer peripheral surface defining a plurality of engagement sections. A tooth of the driver blade is configured to engage one of the engagement sections when moving the driver blade from the bottom-dead-center position toward the top-dead-center position.
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公开(公告)号：US20230030017A1
公开(公告)日：2023-02-02
申请号：US17962037
申请日：2022-10-07
IPC分类号： B25C1/04
摘要： 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.
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公开(公告)号：US20220324079A1
公开(公告)日：2022-10-13
申请号：US17717503
申请日：2022-04-11
发明人： James C. Sitter , Jeffrey S. Holly , Joseph G. Bloomfield , David A. Bierdeman , Logan M. Hietpas , Adam N. Carter , Nikos A. Gainacopulos , Eric K. Farrington , Christopher M. Didier , Benjamin J. Ludy
IPC分类号： B24B23/06
摘要： A belt sander for sanding a workpiece and defining a center of gravity within a first plane. The belt sander includes a housing, a handle defining a second plane, and a drive unit disposed within the housing. The drive unit includes a motor disposed adjacent a first sidewall of the housing, a pulley system disposed adjacent a second sidewall of the housing opposite the first sidewall, and a transmission disposed between the motor and the pulley system. The belt sander further includes a belt drive system driven by the drive unit and including a drive wheel, a driven wheel, and a platen. The platen defines a third plane extending perpendicular therefrom. The transmission and pulley system are disposed on one side of the first plane and the motor is disposed on an opposite side of the first plane. The motor is intersected by the second and third planes.
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公开(公告)号：US20200164498A1
公开(公告)日：2020-05-28
申请号：US16696818
申请日：2019-11-26
IPC分类号： B25C1/04
摘要： 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.
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公开(公告)号：US12083659B2
公开(公告)日：2024-09-10
申请号：US18085954
申请日：2022-12-21
发明人： David A. Bierdeman
摘要： 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. The driver blade also includes a tooth defining an end portion. A drive unit provides torque to move the driver blade from the BDC position toward the TDC position. A rotary lifter is engageable with the driver blade and is configured to receive torque from the drive unit to return the driver blade from the BDC position toward the TDC position. The lifter has a drive pin and a roller positioned on and rotatable relative to the drive pin about a rotational axis. The roller includes a center of gravity that is offset from the rotational axis.
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公开(公告)号：US12070809B2
公开(公告)日：2024-08-27
申请号：US16801679
申请日：2020-02-26
IPC分类号： B23D53/12
CPC分类号： B23D53/12
摘要： 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.
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公开(公告)号：US12005560B2
公开(公告)日：2024-06-11
申请号：US17058836
申请日：2020-09-04
摘要： An oscillating power tool including a housing, a motor including a drive shaft rotatable about a motor axis, an output spindle configured to be driven by the motor and journaled for oscillating rotation about an oscillation axis, and a drive mechanism. The drive mechanism is configured to convert rotation of the drive shaft into oscillating rotation of the output spindle about the oscillation axis and includes an eccentric member and a forked member. Oscillating rotation of the forked member has an angular amplitude about the oscillation axis. The eccentric member is movable with respect to the forked member to change the angular amplitude of oscillating rotation of the forked member. An amplitude adjustment actuator is configured to move the eccentric member to change the angular amplitude of oscillating rotation of the forked member. The amplitude adjustment actuator defines a receptacle. At least a portion of the forked member is disposed in the receptacle.
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公开(公告)号：US20240173822A1
公开(公告)日：2024-05-30
申请号：US18524189
申请日：2023-11-30
发明人： Alex D. Servais , David A. Bierdeman , Ryan D. Moorleghen , Joseph G. Bloomfield , Ivan N. Zozulya , Daniel J. Chartier , Brian Lacina
CPC分类号： B24B55/102 , B24B41/007 , B24B47/18
摘要： A random orbit sander includes a housing and a motor enclosed within the housing. The motor includes a motor shaft that is rotatable about a first axis. An eccentric carrier coupled to the motor shaft includes a circular internal bore that defines a second axis that is offset from the motor shaft. A bearing is received within the circular internal bore of the eccentric carrier. A sanding pad is supported by the bearing and is rotatable about the first axis in an eccentrically orbiting manner. The motor shaft and the eccentric carrier are integrally formed as a single piece.
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公开(公告)号：US20220143798A1
公开(公告)日：2022-05-12
申请号：US17584060
申请日：2022-01-25
发明人： Beth E. Cholst , Troy C. Thorson , Jacob P. Schneider , Mackenzie J. Nick , Nathan Bandy , David A. Bierdeman , Travis W. Leathrum , Mitchell T. Neuhoff , Mark C. Hughes , David C. Graf , Marcus Wechselberger
IPC分类号： B25C1/04
摘要： A powered fastener driver includes a driver blade movable from a top-dead-center (TDC) position to a 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. A rotary lifter is engageable with the driver blade and configured to receive torque from the drive unit for returning the driver blade from the BDC position toward the TDC position. The lifter has a body, a drive pin coupled to the body, and a roller positioned on the drive pin. The roller includes an engagement section configured to receive an end portion of a tooth of the driver blade. The lifter includes a means for aligning the engagement section with the end portion of the tooth on the driver blade to facilitate meshing between the end portion and the roller.
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