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公开(公告)号：US10399216B2
公开(公告)日：2019-09-03
申请号：US14560701
申请日：2014-12-04
申请人： Black & Decker Inc.
摘要： A hammer/drill includes a housing, a motor with armature shaft, a spindle rotatably mounted about a longitudinal axis in the housing, a tool holder rotatingly driven by the motor about the longitudinal axis, a hammer mechanism for generating impacts acting on the tool holder, a drive shaft coupleable with the armature shaft, and a switching arrangement to switch between drilling, hammer drilling, and hammering modes. The switching arrangement comprises a selector and coupling part axially displaceable on the drive shaft between lower and upper positions, coupling and decoupling the drive shaft to the armature shaft respectively. The coupling part includes a sleeve comprising a flange, and the selector comprises a fork for engaging a lower part of the flange. A protuberance engages a drive member of the selector to pivot the selector when the spindle is rotated, engaging over only a portion of the rotational movement of the spindle.
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公开(公告)号：US20190168369A1
公开(公告)日：2019-06-06
申请号：US16324233
申请日：2017-07-31
摘要： The A hand-held power tool includes a tool holder 2 for holding a tool and a pneumatic striking mechanism for periodically generating impacts on the tool held in the tool holder. The striking mechanism includes a guiding tube, an exciter piston, a striker, a pneumatic chamber closed by the exciter piston and the striker in the guiding tube, and a compensating opening in the guiding tube for ventilating the pneumatic chamber. A cap covers the compensating opening on an outside of the guiding tube. The cap is open in an opening direction which is largely tangential to the guiding tube.
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公开(公告)号：US20180370007A1
公开(公告)日：2018-12-27
申请号：US16061377
申请日：2016-12-06
CPC分类号： B25D11/005 , B25D11/125 , B25D17/06 , B25D2217/0019 , B25D2250/035 , B25D2250/131 , B25D2250/185 , B25D2250/231 , B25D2250/365
摘要： A percussion mechanism contains a guide tube, an exciter piston, a hammer, a pneumatic chamber for coupling the hammer to the motion of the exciter piston, a striker, and a seat for the striker. The hammer has a striking point, defined by a striking surface of the striker when the striker lies against the seat. A check valve has an outlet opening and a closing mechanism for closing the check valve against an air flow from the interior of the guide tube. The outlet opening is arranged in such a way that the outlet opening is closed by the hammer during striking operation and otherwise is open.
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公开(公告)号：US20180361551A1
公开(公告)日：2018-12-20
申请号：US16061387
申请日：2016-12-06
发明人： Markus HARTMANN , Rory BRITZ
摘要： A hand-held machine tool including a tool holder for a striking tool has a motor, an impact mechanism, a spool valve, and a pneumatic chamber. The impact mechanism has an exciter piston moved by the motor, and a hammer coupled to the exciter piston via a pneumatic chamber arranged between the exciter piston and the hammer, and a striker arranged in front of the hammer in the striking direction. In a working position counter to the striking direction, the striker bears on a stop, in a starting position the striker is offset in the striking direction relative to the working position, and in a rest position the striker is offset in the striking direction relative to the starting position. In the starting position, the hammer bearing on the striker closes the spool valve and, in the rest position, the hammer bearing on the striker opens the spool valve.
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公开(公告)号：US09873178B2
公开(公告)日：2018-01-23
申请号：US15028087
申请日：2014-10-09
发明人： Kevin Inkster
IPC分类号： B23B45/16 , B25D9/00 , B25D11/00 , B25D13/00 , B25D16/00 , E21B1/00 , B24B23/03 , B24B23/04 , B24B27/06 , B24B27/08 , B24B47/00 , B24B47/12 , F16H1/32 , B26D5/08 , B28D1/04 , B28D1/06 , F16H1/20 , F16H1/28 , B26D1/00
CPC分类号： B24B23/03 , B23D47/12 , B24B23/04 , B24B27/06 , B24B27/08 , B24B47/00 , B24B47/12 , B26D1/00 , B26D5/08 , B27B19/006 , B28D1/04 , B28D1/045 , B28D1/06 , F16H1/20 , F16H1/28 , F16H1/32 , F16H2001/327
摘要： A cutting tool mechanism 11 for providing a cutting, abrading or grinding action is disclosed. The mechanism 11 has an inner circular part 17 having teeth 19 extending radially outwardly, a surrounding circular part 25 having inner teeth 27 extending radially inwardly. The circular parts 17 and 25 co-operate by engagement their teeth 19 and 27. Rotation of one circular part causes the other to move constrained by the engagement of the teeth in an orbital, oscillatory or impact motion. An input coupling 81 is provided for transmission of rotary motion, and an output coupling 37 is provided to transmit said orbital, oscillatory or impact motion to a blade 13. In further embodiments, the surrounding circular part 25 can be provided with outwardly extending teeth and surrounded by a further outer circular part with inwardly extending teeth, to cooperate with the outwardly extending teeth, to provide more complex orbital, oscillatory or impact motion.
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公开(公告)号：US20180001461A1
公开(公告)日：2018-01-04
申请号：US15402198
申请日：2017-01-09
CPC分类号： B25D11/10 , B21J15/26 , B25C1/047 , B25C1/06 , B25D11/005 , B25D2211/062 , B25D2222/72 , B25D2250/375 , E04H17/263
摘要： An impacting apparatus includes a spring anvil assembly and a drive mechanism that alternatively engages a the spring anvil assembly to actuate the spring anvil assembly to store potential energy in the spring anvil assembly, and which drive mechanism alternatively disengages the spring anvil assembly to allow the spring anvil assembly to launch and accelerate toward an impact target to deliver impact energy from the spring anvil assembly to the impact target. In an embodiment, the spring anvil assembly is biased to a start position by one of the impact target and the weight of the apparatus. The spring anvil assembly may comprise a gas spring or a spring, for example. The apparatus is capable of delivering multiple impacts to an impact target.
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公开(公告)号：US20170326718A1
公开(公告)日：2017-11-16
申请号：US15531985
申请日：2015-11-30
发明人： Ralf Meixner , Manfred Jakob , Thomas Thanner
IPC分类号： B25F5/00 , H01M10/6563 , B25D11/00 , H01M10/6235 , B25D16/00 , B25D17/20 , H01M10/48
摘要： A hand-held power tool, in particular a hammer drill or a combination hammer, is disclosed. The hand-held power tool includes a tool housing which has a receiving recess designed to replaceably receive a storage battery or a power supply unit. The hand-held power tool has an electric drive motor with a cooling fan. The tool housing has a first vent portion which is located in the receiving recess and through which a volume flow generated by the cooling fan can be guided.
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公开(公告)号：US20170320206A1
公开(公告)日：2017-11-09
申请号：US15526450
申请日：2015-11-11
申请人： MAKITA CORPORATION
摘要： An impact tool has a body and a striking mechanism that drives a tool accessory in a prescribed longitudinal direction. The body has a first body element on which the striking mechanism is provided, and a second body element. The first body element and the second body element are connected via a cushioning mechanism. A vibration reducing mechanism is provided on the first body element.
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公开(公告)号：US09782881B2
公开(公告)日：2017-10-10
申请号：US12884260
申请日：2010-09-17
申请人： Iwan Wolf , Mario Zahner , Rolf Erhardt
发明人： Iwan Wolf , Mario Zahner , Rolf Erhardt
CPC分类号： B25C1/08
摘要： The invention relates to a device for transmitting energy to a fastener, with a reaction chamber, an energy-transmission element that can move in a fastening direction for transmitting energy released in the reaction chamber to a fastener, a first supply channel opening into the reaction chamber for feeding a first reagent to the reaction chamber, wherein the first supply channel comprises a feeder device for feeding the first reagent into the reaction chamber and a controllable closing device for a time-wise closing of the first supply channel.
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公开(公告)号：US20170138072A1
公开(公告)日：2017-05-18
申请号：US14941550
申请日：2015-11-14
申请人： Richard Tailly
发明人： Richard Tailly
CPC分类号： E04G23/006 , B25D11/00 , B25D17/32 , B25D2250/005 , B28D1/28
摘要： A powered tile breaker has an adjustable frame and the frame is further comprised of a handlebar member, a foldable shaft, a base member, and wheels. The base member holds a chiseling assembly which comprises a main electric motor located inside a motor casing. The motor powers a chisel member. The chiseling assembly is angularly adjustable by way of an actuator member which consists in a secondary electric motor driving a piston. The piston has one end rotationally connected to the base member, and the actuator member is rotationally connected to a lever member which extends from the chiseling assembly and which connects at a pivot point.
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