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公开(公告)号：US20240316741A1
公开(公告)日：2024-09-26
申请号：US18124904
申请日：2023-03-22
发明人： Xingjian Jing
IPC分类号： B25D17/04
CPC分类号： B25D17/043 , B25D2217/0073 , B25D2250/371
摘要： Vibration suppression handle structures for high-vibration handheld machines (e.g., jackhammers) are provided that offer improved vibration suppression. The handle structures of examples include two handles that are rotatably connected to X-shaped structures for vibration suppression. For instance, one side of each of the first and second handles is rotatably connected to one of the X-shaped structures, and the other side of each of the first and second handles is rotatably connected to the second X-shaped structure. The X-shaped structures of examples are adjustable in size and stiffness and thus can be adapted for different sized or shaped handheld machines. Jackhammers are further provided that include the vibration suppression handle structures.
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公开(公告)号：US11932996B2
公开(公告)日：2024-03-19
申请号：US17590931
申请日：2022-02-02
发明人： Otto Widlroither
CPC分类号： E01B29/26 , B25D11/06 , B25D17/043 , B25D17/20 , B25D17/24 , B25D2217/0061 , B25D2217/0073 , B25D2250/171 , E01B2201/04
摘要： A nail punching machine for driving in or pulling out rail spikes includes a driving mechanism, which is driven by an electric drive motor. The electric drive motor is supplied with electric power by an accumulator. The nail punching machine is held by an operator by at least one handle.
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公开(公告)号：US20170106517A1
公开(公告)日：2017-04-20
申请号：US15318152
申请日：2015-06-02
申请人： MAKITA CORPORATION
发明人： Yoshitaka MACHIDA
CPC分类号： B25D11/102 , B25D11/062 , B25D16/00 , B25D16/006 , B25D17/24 , B25D2211/006 , B25D2211/062 , B25D2216/0015 , B25D2216/0023 , B25D2216/0038 , B25D2217/0073 , B25D2222/57 , B25D2250/121 , B25D2250/371
摘要： A hammer drill has a body housing having a motor housing and a gear housing formed in one piece. An electric motor is fixed to the motor housing. A motion converting mechanism, a striking mechanism and a tool holder which form a striking mechanism part are housed in the gear housing so as to be movable with respect to the gear housing. During hammering operation, the striking mechanism part moves with respect to the gear housing under a biasing force of a coil spring, so that vibration caused by the hammering operation is reduced.
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公开(公告)号：US11813727B2
公开(公告)日：2023-11-14
申请号：US17400293
申请日：2021-08-12
发明人： Jian-Shiou Liaw
CPC分类号： B25D17/24 , B25D9/02 , B25D2217/0073
摘要： A cushion device of a pneumatic tool has a body, a cushion, and a piston assembly. The body includes a containing portion which has a bottom surface. The cushion is mounted in the containing portion of the body, is formed cylindrical, and has an axial direction, two end surfaces, an interior, an exterior, and at least one passage. The two end surfaces are separately located along the axial direction, and one of the two end surfaces abuts against the bottom surface of the containing portion. The at least one passage is disposed on the cushion, and communicates with the interior and the exterior. The piston assembly is movably mounted to the containing portion of the body and has a base and a cylinder. The base has an abutting portion abutting against the other one of the two end surfaces of the cushion. The cylinder is connected with the base.
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公开(公告)号：US11679482B2
公开(公告)日：2023-06-20
申请号：US17188009
申请日：2021-03-01
申请人： MAKITA CORPORATION
发明人： Masanori Furusawa , Hajime Takeuchi , Hideki Tsuji , Yoshiro Tada
IPC分类号： B25D17/24 , B25D17/04 , H01M50/247 , H01M50/264 , H01M50/296 , B25D16/00 , B25D11/12
CPC分类号： B25D17/24 , B25D17/04 , H01M50/247 , H01M50/264 , H01M50/296 , B25D11/125 , B25D16/003 , B25D16/006 , B25D2211/068 , B25D2216/0084 , B25D2217/0073 , B25D2250/095 , B25D2250/121 , B25D2250/265 , H01M2220/30
摘要： A power tool includes a motor, a housing, a battery holder and a cushion. The battery holder is held by the housing to be movable at least in a first direction relative to the housing. The battery holder is configured to removably receive a battery for supplying electric power to the motor. The cushion is held by the housing such that the first direction intersects the cushion. When the battery is attached to the battery holder, the cushion is directly or indirectly disposed between the battery and the housing.
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公开(公告)号：US20190210205A1
公开(公告)日：2019-07-11
申请号：US16065325
申请日：2016-12-20
发明人： Tsutomu Kaneko , Masahiro Koizumi , Toshio Matsuda
CPC分类号： B25D9/26 , B25D17/245 , B25D2217/0073 , B25D2222/72 , E21B1/02 , E21C27/12 , E21C27/122
摘要： A hydraulic hammering device is capable of sufficiently transmitting blow energy to bedrock while further strengthening cushioning action and suppressing damage to equipment. The device includes a pushing piston disposed behind a transmission member and having a smaller propulsive force than that of a main body, a damping piston positioned behind the pushing piston to slide reciprocally forwards and backwards and having a greater propulsive force than that of the main body, a direction-restrictor in a high-pressure circuit between pushing and damping chambers, to which hydraulic fluid is supplied for providing the pistons with propulsive forces, and a fluid supply source. The direction-restrictor restricts an outflow from the chambers side to the fluid supply source side while allowing fluid inflow from the fluid supply source side to the chambers and the pushing chamber sides. A throttle in a drain circuit discharges leaked fluid from a sliding contact location to a tank.
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公开(公告)号：US20180222032A1
公开(公告)日：2018-08-09
申请号：US15424925
申请日：2017-02-06
申请人： Chia-Ya Cheng , Chih-Kuan Hsieh
发明人： Chia-Ya Cheng , Chih-Kuan Hsieh
CPC分类号： B25F5/006 , B08B7/022 , B25D9/08 , B25D17/043 , B25D17/046 , B25D17/24 , B25D2217/0073 , B25D2250/121 , B25D2250/231 , B25D2250/291 , B25D2250/345
摘要： A shock absorbing protection structure for a handheld tool contains: a power tool, a shock absorption sleeve, and at least one stopper. The power tool includes a drive block which has a switch configured to turn on/off the drive block, the driving block also has a coupling tube which has a tool head fixed on the coupling tube away from the drive block, and the power tool includes a joining portion formed on the power tool. The shock absorption sleeve is fitted on the joining portion of the power tool, and between the shock absorption sleeve and the joining portion is defined an accommodation space. The at least one stopper is flexible and is defined between the shock absorption sleeve and the joining portion of the power tool, and the at least one stopper is located at the accommodation space so as to absorb vibration.
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公开(公告)号：US20240316742A1
公开(公告)日：2024-09-26
申请号：US18188066
申请日：2023-03-22
发明人： Xingjian Jing
IPC分类号： B25D17/04
CPC分类号： B25D17/043 , B25D2217/0073 , B25D2250/371
摘要： Vibration suppression handle structures for high-vibration handheld machines (e.g., jackhammers, hydraulic breakers, hammer drills, soil compactors, etc.) are provided that offer improved vibration suppression. The provided handle structures include a handle that is connected to vibration suppression systems that include an arrangement of support members and resilient members for improved vibration suppression over typical high-vibration handled machines while remaining a compact design. A portion of the support members are arranged as X-shaped support structures. In at least some embodiments, the handle structures include a system by which to adjust a stiffness, and therefore vibration suppression, of the vibration suppression systems. Jackhammers are further provided that include the provided vibration suppression handle structures.
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公开(公告)号：US20240181617A1
公开(公告)日：2024-06-06
申请号：US18444061
申请日：2024-02-16
CPC分类号： B25D17/005 , B25D17/043 , B25D2217/0073
摘要： A method of driving a rod into the ground comprises coupling an impact portion of an attachment to a powered hammer, positioning the rod between a first jaw of the attachment and a second jaw of the attachment, activating a first motor to move the first jaw toward the second jaw, such that the rod is clamped between the two jaws, and activating a second motor to drive an axial impact mechanism of the powered hammer to deliver repeated axial impacts to the impact portion of the attachment.
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公开(公告)号：US20240075603A1
公开(公告)日：2024-03-07
申请号：US18233417
申请日：2023-08-14
申请人： MAKITA CORPORATION
发明人： Hajime TAKEUCHI , Kei WATANABE
CPC分类号： B25D16/006 , B25D16/003 , B25D17/043 , B25D2216/0023 , B25D2216/0084 , B25D2217/0073 , B25D2250/095 , B25D2250/261 , B25D2250/265
摘要： A rotary hammer selectively operates in multiple modes including a first mode and a second mode. The rotary hammer includes a switch, a motor, a switch manipulation member, a locking member, and a mode detecting device. The switch manipulation member includes a body, and a protrusion that is movable between a protruding position and a retracted position. The body houses a solenoid configured to operate based on a detection result of the mode detecting device. The locking member is movable between an unlock position and a lock position where the locking member holds the switch manipulation member in an ON position by abutting the protrusion in the protruding position. The protrusion is integrated with a plunger of the solenoid. The protrusion is configured to be in the protruding position when the present mode is the first mode, and in the retracted position when the present mode is the second mode.
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