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公开(公告)号：US20230241752A1
公开(公告)日：2023-08-03
申请号：US18152883
申请日：2023-01-11
申请人： MAKITA CORPORATION
CPC分类号： B25D17/24 , B25D17/04 , B25D2250/041 , B25D2250/095 , B25D2250/121
摘要： A power tool having a hammer mechanism includes a first housing, a motor housed in the first housing, a second housing that at least partially covers the first housing, and a controller housed in the second housing. The second housing is coupled to the first housing via at least one elastic member to be movable relative to the first housing in a first direction that is parallel to the driving axis. The second housing has at least one opening for wiring. The at least one opening communicatively connects an inside and an outside of the second housing. At least one electric wire extends from the controller to the outside of the second housing through the at least one opening.
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公开(公告)号：US11705721B2
公开(公告)日：2023-07-18
申请号：US17194722
申请日：2021-03-08
CPC分类号： H02H7/26 , B25F5/001 , H02H1/0007 , H02K7/003 , H02K7/145 , H02K11/215 , B25D17/24 , B25D2250/095 , H02J13/00002
摘要： A power tool including a housing, a motor having a rotor and a stator, at least one grip sensor configured to generate a grip parameter, and a switching network electrically coupled to the brushless DC motor. An electronic processor is connected to the switching network and the at least one grip sensor and configured to implement kickback control of the power tool. The electronic processor is configured to determine a kickback threshold based on the grip parameter, control the switching network to drive the motor, receive a signal related to a power tool characteristic, determine, based on the power tool characteristic being greater than or equal to the kickback threshold, that a kickback event of the power tool is occurring, and control, in response to determining that the kickback event is occurring, the switching network to cease driving of the motor.
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公开(公告)号：US11691204B2
公开(公告)日：2023-07-04
申请号：US16626257
申请日：2018-06-20
CPC分类号： B23B51/02 , B25D17/02 , B25D17/20 , B28D1/146 , B28D1/26 , E21B10/36 , B23B2222/28 , B23B2226/75 , B23B2251/68 , B25D2217/0003 , B25D2222/51
摘要： A drill bit for chiseling stone includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has, at a front end of the drill head, a cutting edge, an intake opening, and an intake passage. The intake passage connects the intake opening to the delivery passage. A cross section of the intake passage increases from the intake opening to the delivery passage.
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公开(公告)号：US11673247B2
公开(公告)日：2023-06-13
申请号：US17061618
申请日：2020-10-02
发明人： Wei Lu , Fukinuki Masatoshi , Yasheng Chen
CPC分类号： B25D17/24 , B25B21/026 , B25D2211/064 , B25D2211/067
摘要： An impact drill includes an output shaft capable of rotating around a first axis and moving along the first axis, a housing, a first impact block fixedly connected to the output shaft, a second impact block, a stopping element for stopping the output shaft from moving backward, and a movable element mounted on the housing. The housing is formed with a through hole for accommodating the movable element. The through hole passes through the housing in a first line and the movable element is capable of moving to a first position and a second position along the first line. When the movable element moves to the first position, the movable element prevents the output shaft from moving backward. When the movable element moves to the second position, the movable element allows the output shaft to move backward.
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公开(公告)号：US11667025B2
公开(公告)日：2023-06-06
申请号：US16471964
申请日：2017-12-13
发明人： Harald Fielitz , Karl Franz , Matthias Blessing
CPC分类号： B25F5/02 , B21J15/105 , B25B21/00 , B25C1/008 , B25D16/00
摘要： A tool device comprises a first module and a second module that can be detached from the first module, the first module having a receptacle and the second module having an insertion part that can be inserted in the receptacle along an insertion axis. The insertion part can be rotated in the receptacle about the insertion axis between a locked position and an enabled position, the receptacle having a first projection and the insertion part having a second projection. In the locked position, the second projection engages behind the first projection in the direction of the insertion axis, and in the enabled position, the first projection enables the second projection to pass in the direction of the insertion axis, the receptacle preventing an activation of the tool device in an initial position and allowing activation of the tool device in a pressed-on position.
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公开(公告)号：US11655607B2
公开(公告)日：2023-05-23
申请号：US17113150
申请日：2020-12-07
申请人： James Robson
发明人： James Robson
CPC分类号： E02D7/04 , B25D1/00 , B25D2222/21 , B25D2250/391
摘要： A hand-held driver device, comprising a solid impact body, configured to provide a user a surface for driving fasteners, an adjustable strap attached to a top surface of the solid impact body for retaining the solid impact body on the user's hand, a pair of inextensible rings attached to the adjustable strap, the pair of inextensible rings laterally opposed to each other and configured to provide a secure attachment point between the adjustable strap and the solid impact body, an adjustment device attached to the adjustable strap for modifying the length of the adjustable strap, an insulating surface integral to the top surface of the solid impact body, which is configured to conform to the shape of the user's hand and provide impact protection to the user's hand during use of the hand-held driver device, and a sacrificial bottom surface integral to the solid impact body, which is configured to make contact with the fasteners.
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公开(公告)号：US11642769B2
公开(公告)日：2023-05-09
申请号：US17668036
申请日：2022-02-09
申请人： MAKITA CORPORATION
CPC分类号： B25D16/00 , B25D17/24 , B25F5/02 , B25D17/00 , B25D2211/003 , B25D2211/006 , B25D2211/061 , B25D2211/068 , B25D2216/0023 , B25D2217/0073 , B25D2217/0076 , B25D2217/0092 , B25D2250/121 , B25D2250/245 , B25D2250/331 , B25F5/006
摘要： A movable support at least partially supports a final output shaft and a driving mechanism, and is integrally movable relative to a housing in an axial direction of a driving axis. A biasing member biases the movable support toward a front side in the axial direction. A first guide shaft extends in the axial direction and slidably guides the movement of the movable support in the axial direction. At least one intermediate shaft rotates in response to rotation of a motor shaft and transmit power of the motor to the driving mechanism. At least one bearing supports an end portion of the at least one intermediate shaft is located in the front side in the axial direction. A single metal support is immovable relative to the housing and supports the at least one bearing. The single metal support has a first hole for partially receiving the first guide shaft.
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公开(公告)号：US20230135467A1
公开(公告)日：2023-05-04
申请号：US18088787
申请日：2022-12-27
发明人： Weiping HOU
摘要： An electric impact hammer includes an output shaft, a cylinder and a piston arranged in the cylinder. The piston defines an accommodating groove running through the rear end surface and a pair of through holes communicating with the accommodating groove and running through the outer periphery, and the front end of the output shaft is inserted in the accommodating groove, and the output shaft defines a corrugated groove on the outer periphery of the front end and a steel ball partially accommodated in the corrugated groove, the corrugated groove is connected end to end along the outer periphery of the output shaft and has an axial front end and an axial rear end; the other part of the steel ball is accommodated in the through hole, and the output shaft drives the piston to reciprocate in the axial direction by means of the steel balls.
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公开(公告)号：US20230124502A1
公开(公告)日：2023-04-20
申请号：US17503006
申请日：2021-10-15
申请人： Caterpillar Inc.
摘要： An example bushing of a hydraulic hammer tool includes an outer region and an inner region. The inner region has a relatively greater hardness than the outer region. The inner region may also be compressively stressed, while the outer region may have tensile stress. The stress and/or hardness profile of the bushing may enhance its resistance to wear and galling defects when a hammer of the hydraulic hammer tool is held in alignment by the bushing. The outer region of the bushing may be relatively soft, resulting in the bushing having a relatively high level of toughness. The bushing may be formed using medium to high carbon steel by rough forming the bushing, hardening the bushing, tempering the bushing, and induction softening the outer region of the bushing.
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公开(公告)号：US20230118812A1
公开(公告)日：2023-04-20
申请号：US17799484
申请日：2021-01-20
发明人： Stephen Jackman , Falko Pfeuffer , Ian Dawson
摘要： A tool for breaking rocks comprising a tool head supported by a guide means to be linearly displaceable with respect to the guide between a retracted position and an extended position, a distal end of said tool head extending from said guide to engage a surface to be broken when the tool head is in its extended position; a drive adapted to drive said tool head towards its retracted position in a first operation and to drive the tool head towards its extended position in a second operation, said drive including a drive part mounted on said guide and a driven part mounted on the tool head and engaged by said drive part to be linearly displaceable with respect to the guide upon operation of the drive part of the drive; and a controller adapted to control operation of the drive .
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