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公开(公告)号：US20240359305A1
公开(公告)日：2024-10-31
申请号：US18646072
申请日：2024-04-25
发明人： Jacob P. Schneider
IPC分类号： B25D17/06
CPC分类号： B25D17/06 , B25D2217/0015
摘要： An anvil is for use with an impact tool. The anvil includes an impact receiving portion having a lug configured to be impacted to rotate the anvil about an axis, a drive portion opposite the impact receiving portion, and a shank extending between the impact receiving portion and the drive portion. The drive portion is configured for coupling to a tool bit. The shank includes a necked portion having a reduced diameter. The necked portion is located adjacent the drive portion and between the impact receiving portion and the drive portion.
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公开(公告)号：US20240359304A1
公开(公告)日：2024-10-31
申请号：US18683843
申请日：2022-08-22
申请人： RESONTECH LTD
发明人： Hugh Edward Fisher
IPC分类号： B25D11/10
CPC分类号： B25D11/102 , B25D2250/045
摘要： A cam operated apparatus with a cam track (16) and cam follower (12) being engaged with one another, a head element such as a bit operatively connected to the cam track or cam follower means, and rotational drive means such as a motor operatively connected to the other, such that rotational drive causes reciprocal action of the head element and the width (A) of the cam follower means (12) is in the region of 91% to 99%, of the width (B) of the cam track (16), to create a harmonic effect on the head element with low noise and increased power efficiency. Pin-in-wave and wave-in-wave arrangements are described along with tools including the cam operated apparatus.
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公开(公告)号：US20240342878A1
公开(公告)日：2024-10-17
申请号：US18615103
申请日：2024-03-25
IPC分类号： B25B23/147 , B25B21/02 , B25D11/06 , B25F5/00
CPC分类号： B25B23/1475 , B25B21/023 , B25D11/068 , B25F5/00 , B25D2250/221
摘要： Position sensing related to a component within a power tool. The component within the power tool is, for example, a hammer of an impact mechanism and can include one or more sensible features that allow a controller of the power tool to precisely determine the position, speed, and acceleration of the component. One or more sensors can be used to determine the rotational position of the hammer and the axial position of the hammer. The rotational position of the hammer can then be used to calculate, for example, rotational speed and acceleration of the hammer. With precise determinations of the rotational and axial position of the hammer, the controller of the power tool is able to precisely time the impact between the hammer and the anvil to optimize the impact between the hammer and the anvil (e.g., to maximize energy transfer between the hammer and the anvil).
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公开(公告)号：US12115636B2
公开(公告)日：2024-10-15
申请号：US17988093
申请日：2022-11-16
申请人： MAKITA CORPORATION
发明人： Takeshi Kamiya
CPC分类号： B25D11/064 , B25D11/10 , B25D17/04 , B25D17/08 , B25D17/26 , B25D2250/085 , B25D2250/141 , B25D2250/221
摘要： To reduce size increase, a power tool includes a motor, an output shaft located frontward from the motor, rotatable by the motor, and having an insertion hole extending rearward from a front end of the output shaft, a bearing supporting the output shaft in a rotatable manner, a locking member supported by the output shaft and movable to a locking position for locking a tip tool placed in the insertion hole and to an unlocking position for unlocking the tip tool, a bit sleeve surrounding the output shaft, and movable to a movement-restricting position for restricting radially outward movement of the locking member and to a movement-permitting position for permitting radially outward movement of the locking member, and an operable member operable to move the bit sleeve and at least partly overlapping the bearing in an axial direction.
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公开(公告)号：US20240339829A1
公开(公告)日：2024-10-10
申请号：US18666057
申请日：2024-05-16
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：US20240335932A1
公开(公告)日：2024-10-10
申请号：US18631277
申请日：2024-04-10
发明人： Daniel Alstin Crane
IPC分类号： B25D17/06
CPC分类号： B25D17/06
摘要： An assembly of a barrel adaptor and a hammer bit, and components thereof, for use with a hydraulic hammer. The barrel adaptor is coupled about the hammer bit by means of a pin, and includes a cylindrical body, a ledge formed between an upper segment and a lower segment of the cylindrical body, and a pair of apertures extending through opposing sides of the cylindrical body and aligned with a keyway of the hammer bit, through which the pin extends in coupling. A sleeve is movably secured about a portion of the upper segment of the cylindrical body. Affixed within the bottom of the cylindrical body are one or more steel plates, and at a distal end a nosepiece, with a tooth removably affixed to the nosepiece.
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公开(公告)号：US12109674B2
公开(公告)日：2024-10-08
申请号：US17783459
申请日：2020-12-16
发明人： Kwang Pyo Ko , Jin Kook Kim
摘要： The present invention relates to a hydraulic breaker. The valve is installed on an inner surface of the cylinder bush and the cylinder inner diameter portion to be movable in the vertical direction. The valve includes an upper valve portion having an upper end surface on which the pressure of the upper cylinder chamber acts, a lower valve portion having a lower end surface on which the pressure of the upper cylinder chamber acts, a first valve expanded-diameter portion which is formed between the upper valve portion and the lower valve portion, of which an outer diameter expands to be greater than outer diameters of the upper valve portion and the lower valve portion, and in which a first upper valve hydraulic pressure area communicates with the first and second flow channels, and a second valve expanded-diameter portion which is formed between the first valve expanded-diameter portion and the lower valve portion, of which an outer diameter expands to be greater than an outer diameter of the first valve expanded-diameter portion, and in which the second upper valve hydraulic pressure area communicates with the fourth flow channel, and the pressure of the valve switching chamber acts on a lower valve hydraulic pressure area having an area greater than an area of the first upper valve hydraulic pressure area.
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公开(公告)号：US12105149B2
公开(公告)日：2024-10-01
申请号：US17504770
申请日：2021-10-19
IPC分类号： G01R31/34 , B25D17/08 , B27B17/08 , H02K11/20 , H02K11/35 , H02K15/00 , H02P27/08 , H03K17/687
CPC分类号： G01R31/343 , G01R31/34 , G01R31/346 , H02P27/08 , H03K17/6871 , B25D17/08 , B25D2250/095 , B25D2250/221 , B25D2250/265 , B27B17/08 , H02K11/20 , H02K11/35 , H02K15/00 , H03K2217/0063 , H03K2217/0072
摘要： Power tool devices described herein include a housing, a power source interface, a field effect transistor within the housing connected between the power source interface and a load of the power tool device, and an electronic processor coupled to the field effect transistor. The electronic processor is configured to control the field effect transistor to drive the load and measure a voltage at a terminal of the field effect transistor. The electronic processor is also configured to determine the current flowing through the field effect transistor based on the voltage without using a shunt resistor.
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公开(公告)号：US12104394B2
公开(公告)日：2024-10-01
申请号：US17700165
申请日：2022-03-21
CPC分类号： E04H12/2292 , B25D17/02 , E04H17/261 , B25D11/06 , B25D2250/095 , B25D2250/111 , E04H17/22
摘要： Disclosed herein is a post repair kit comprising a stake defined by a body, proximal end, and a tapered anchor end. The post repair kit comprises a hammer mechanism comprising a power portion and a reciprocating ram structure, the power portion forcibly driving the reciprocating ram structure in a reciprocating motion. The reciprocating ram structure comprises a rod structure having a proximal end coupled with the power portion. The reciprocating ram structure further comprises an offset member connected to a distal end of the rod structure. The offset member has a first hole and a second hole. The distal end of the rod structure is connected to the first hole, wherein the offset member and the rod structure are connected perpendicular to each other. The reciprocating ram structure further comprises an interchangeable adaptor end tool detachably connected to the offset member using a fastening mechanism at the second hole.
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公开(公告)号：US12103155B2
公开(公告)日：2024-10-01
申请号：US18177535
申请日：2023-03-02
发明人： Yan Han , Jiuling Yao , Jianheng Cai , Hongbo Sun
CPC分类号： B25D16/006 , B25D11/062 , B25D16/003 , B25D2216/0084 , B25D2250/095 , B25D2250/121 , B25D2250/331
摘要： An electric hammer includes a housing, an electric motor, an output assembly, an impact assembly, a mounting shaft, a clutch assembly, and a switching assembly. The mounting shaft is rotatable about a second axis. When the electric hammer is in the drill mode, a sleeve of the output assembly rotates. When the electric hammer is in the hammer drill mode, the sleeve rotates and an impact block of the impact assembly reciprocates in the sleeve. The switching assembly is configured to switch the clutch assembly between a first state and a second state and includes a switching element. The switching element includes a forced end and a drive end, the output assembly moving along a first axis drives the forced end to move, and the drive end is configured to drive the clutch assembly to be switched to the first state.
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