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1. 发明授权

US12138768B2 Press-on element for a power tool 有权
公开(公告)号：US12138768B2
公开(公告)日：2024-11-12
申请号：US17916964
申请日：2021-04-07
申请人： Hilti Aktiengesellschaft
发明人： Udo Hauptmann
IPC分类号： B25D17/08
CPC分类号： B25D17/088 , B25D2217/0038 , B25D2250/085 , B25D2250/235
摘要： A power tool, in particular a rotary hammer or combination hammer, containing a percussion-mechanism apparatus for generating percussion pulses on a tool, having a basic body for receiving a rear end of the tool, at least one first and second locking element, each arranged lying in radial openings of the basic body in a reversible manner in a locking position or release position, wherein, in the locking position, the rear end of the tool is held in the basic body and, in the release position, the rear end of the tool can be removed from the basic body, a locking ring for holding the at least first and second locking elements in the locking position, and a press-on element for guiding the at least first and second locking elements in a first axial direction and a second axial direction. The press-on element consists at least partially of an elastic material.

2. 发明授权

US12138767B2 Hand-held power tool comprising a locking device 有权
公开(公告)号：US12138767B2
公开(公告)日：2024-11-12
申请号：US17692544
申请日：2022-03-11
申请人： Robert Bosch GmbH
发明人： Immanuel Werner
IPC分类号： B25D17/08 , B23B31/107
CPC分类号： B25D17/08 , B23B31/1071 , B25D2217/0042 , B25D2250/231 , Y10T279/17076
摘要： A hand-held power tool includes a tool receiver that includes a tubular tool holder configured to lock an insert tool therein by an assigned locking device via at least one locking element. The locking device includes a pressure sleeve that is spring-loaded via an assigned spring element, and a stop sleeve, the stop sleeve having a contact surface on its inner circumference, and the spring-loaded pressure sleeve pressing the at least one locking element in a locking position against the contact surface. The tubular tool holder has at least one recess in which the at least one locking element in the locking position is located, at least portionally, the at least one recess having a ramp-type guideway. The at least one locking element is displaceable along the ramp-type guideway from the locking position to an unlocking position.

3. 发明授权

US12138766B2 Impact power tool 有权
公开(公告)号：US12138766B2
公开(公告)日：2024-11-12
申请号：US18533034
申请日：2023-12-07
申请人： BLACK & DECKER INC.
发明人： Tyler Petrus , Robert J. Opsitos
IPC分类号： B25D17/00 , B25B21/02 , B25D17/06 , B25F5/00 , B25F5/02
CPC分类号： B25D17/06 , B25B21/026 , B25F5/001 , B25F5/02 , B25D2211/064
摘要： An impact power tool includes a transmission output shaft, a rotary impact assembly with a cam shaft, hammer, and anvil, and a tool output shaft rotatable with the anvil. A coupler removably couples the cam shaft to the transmission output shaft. When torque on the tool output shaft is less than or equal to a first threshold, the transmission output shaft, cam shaft, hammer, and anvil rotate together to transmit torque to the tool output shaft. When torque on the tool output shaft is above the first threshold, the hammer moves along the cam shaft away from the anvil by a first distance and applies rotary impacts to the anvil. When the hammer moves along the cam shaft away from the anvil by a second distance greater than the first distance, the coupler decouples the transmission output shaft from the cam shaft, interrupting torque transmission to the tool output shaft.

4. 发明公开

US20240359305A1 IMPACT TOOL ANVIL WITH IMPROVED DURABILITY 审中-公开
公开(公告)号：US20240359305A1
公开(公告)日：2024-10-31
申请号：US18646072
申请日：2024-04-25
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
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.

5. 发明公开

US20240359304A1 Cam Operated Apparatus 审中-公开
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.

6. 发明公开

US20240342878A1 POWER TOOL COMPONENT POSITION SENSING 审中-公开
公开(公告)号：US20240342878A1
公开(公告)日：2024-10-17
申请号：US18615103
申请日：2024-03-25
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Jacob P. Schneider , John S. Dey, IV , Timothy R. Obermann
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).

7. 发明授权

US12115636B2 Power tool 有权
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
IPC分类号： B25D11/06 , B25D11/10 , B25D17/04 , B25D17/08 , B25D17/26
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.

8. 发明公开

US20240339829A1 KICKBACK CONTROL METHODS FOR A POWER TOOL INCLUDING A FORCE SENSOR 审中-公开
公开(公告)号：US20240339829A1
公开(公告)日：2024-10-10
申请号：US18666057
申请日：2024-05-16
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Maxwell L. Merget , Jessie L. Bernitt
IPC分类号： H02H7/26 , B25D17/24 , B25F5/00 , H02H1/00 , H02J13/00 , H02K7/00 , H02K7/14 , H02K11/215
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.

9. 发明公开

US20240335932A1 HAMMER BIT BARREL ADAPTOR 审中-公开
公开(公告)号：US20240335932A1
公开(公告)日：2024-10-10
申请号：US18631277
申请日：2024-04-10
申请人： KANAWHA STONE COMPANY, INC.
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.

10. 发明授权

US12109674B2 Hydraulic breaker 有权
公开(公告)号：US12109674B2
公开(公告)日：2024-10-08
申请号：US17783459
申请日：2020-12-16
申请人： HYUNDAI EVERDIGM CORPORATION
发明人： Kwang Pyo Ko , Jin Kook Kim
IPC分类号： B25D9/12 , B02C1/00 , E02D7/10 , E02F3/96 , F15B15/02
CPC分类号： B25D9/12 , B02C1/005 , F15B15/02 , B25D2250/125 , E02D7/10 , E02F3/966
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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