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公开(公告)号：US12090591B2
公开(公告)日：2024-09-17
申请号：US18167554
申请日：2023-02-10
申请人： MAKITA CORPORATION
CPC分类号： B23Q11/0046 , B25D17/20 , B23Q11/0071 , B25D2217/0065
摘要： A dust collection cup allows a bit tip to be viewable without being detached or replaced. A dust collection cup is attachable to a front cylindrical portion of a hammer drill. The dust collection cup in an attached state allows a bit attached to the front cylindrical portion to extend through the dust collection cup. The dust collection cup includes an attachment attachable to the front cylindrical portion, and a body connectable to the attachment. The body includes an extendable unit including at least a portion in an axial direction retaining a predetermined length.
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公开(公告)号：US12083642B2
公开(公告)日：2024-09-10
申请号：US18482967
申请日：2023-10-09
发明人： Kyle Greunke , Andrew D. Van Hoorn , Kevin A. McLachlan , Julia C. Marsh , Mauricio Builes Zapata , Daryl S. Richards , Beth E. Cholst , Jeffery D. Spraggon
CPC分类号： B23Q11/0046 , B23Q11/0071 , B25D17/043 , B25D17/20 , B25F5/003 , B25F5/026 , B28D7/02 , B25D2211/061 , B25D2217/0057 , B25D2250/121
摘要： A rotary hammer includes a motor and a spindle coupled to the motor for receiving torque from the motor. The spindle has an adjustable rotation speed. A reciprocation mechanism is operable to create a variable pressure air spring within the spindle and includes a piston configured to reciprocate within the spindle in response to receiving torque from the motor. The piston has an adjustable reciprocation frequency. A striker is selectively reciprocable within the spindle in response to reciprocation of the piston. A first transmission is transfers torque from the motor to the spindle and a second transmission is transfers torque from the motor to the reciprocation mechanism. The reciprocation frequency of the piston is adjustable independent of the rotation speed of the spindle. The rotation speed of the spindle is adjustable independent of the reciprocation frequency of the piston. At least one of the transmissions is a multi-speed transmission.
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公开(公告)号：US20240149419A1
公开(公告)日：2024-05-09
申请号：US18380429
申请日：2023-10-16
申请人： MAKITA CORPORATION
CPC分类号： B25D11/064 , B25D11/04 , B25D17/20 , B25F5/006 , B25D2211/003 , B25D2217/0076 , B25D2250/005 , B25D2250/121 , B25D2250/365 , B25D2250/375
摘要： A reciprocating tool includes a motor, a motion converting mechanism, a body housing, an inner housing, a support body, and a counterweight. The motion converting mechanism is operably coupled to a motor shaft and is configured to convert rotation into a linear reciprocating motion along a driving axis. The inner housing is within the body housing and houses at least a portion of the motion converting mechanism. The support body is originally separate from the inner housing and is attached to the inner housing in the body housing. The counterweight is operably coupled to the motion converting mechanism and is configured to be driven by the motion converting mechanism. The counterweight is supported by the support body to be pivotable around a pivot axis that extends in a direction orthogonal to the driving axis. At least a portion of the counterweight is housed in the inner housing.
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公开(公告)号：US11845169B2
公开(公告)日：2023-12-19
申请号：US17846307
申请日：2022-06-22
申请人： MAKITA CORPORATION
发明人： Masanori Furusawa , Kanako Hirono , Kei Watanabe
CPC分类号： B25D17/043 , B25D11/12 , B25D17/24 , B25D17/20 , B25D2211/068 , B25D2217/0061 , B25D2250/085 , B25D2250/121 , B25D2250/221
摘要： An impact tool includes a motor, a driving mechanism, a tool body, an elastically-connected part elastically connected to the tool body to be movable at least in a front-rear direction relative to the tool body, a detecting mechanism configured to detect pressing of a tool accessory against a workpiece, and a control part configured to control driving of the motor based on a detection result of the detecting mechanism. The detecting mechanism includes a movable member that is provided in one of the tool body and the elastically-connected part and configured to be moved by relative movement of the other of the tool body and the elastically-connected part in the front-rear direction, and a detector that is provided in the one of the tool body and the elastically-connected part and configured to detect rearward pressing of the tool accessory by detecting movement of the movable member.
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公开(公告)号：US11780072B2
公开(公告)日：2023-10-10
申请号：US16770492
申请日：2018-12-12
申请人： MAKITA CORPORATION
CPC分类号： B25F5/02 , B23Q11/0071 , B23Q11/0046 , B25D17/20
摘要： In a dust collector for electric power tool, while a casing includes a tubular suction opening portion disposed to protrude forward, a dust collecting route is formed in the casing to ensure capturing a dust suctioned with an air by a filter disposed in a dust box. The suction opening portion is abutted on a surface to be processed and a tool bit of a hammer drill is passable through the suction opening portion. The dust collecting route suctions the air from the suction opening portion and guides the air into the dust box disposed to the casing. The dust box includes a dust removal device (rubber) configured to directly act to the filter from outside to remove the dust accumulated on the filter.
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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：US11597046B2
公开(公告)日：2023-03-07
申请号：US16985315
申请日：2020-08-05
申请人： Robert Arthur , Kenan Wollborg , Nicholas Russell
发明人： Robert Arthur , Kenan Wollborg , Nicholas Russell
摘要： A vacuum dust extraction system includes a snorkel coupled to the implement end of an air tool, a dust bellows surrounding the air tool's implement and fastened to the outboard end of the snorkel, a pneumatically powered water filtration industrial vacuum, and a suction hose coupling the snorkel to the vacuum. The apparatus features an improved coupling arrangement for attaching the snorkel to the barrel of the tool driver that permits the apparatus to work with a wide assortment of air tools.
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公开(公告)号：US11418094B2
公开(公告)日：2022-08-16
申请号：US16499748
申请日：2018-02-23
IPC分类号： H02K11/33 , H02K11/215 , B25F5/00 , H02K7/14 , H02K9/06 , H02K21/16 , H05K1/02 , H05K1/18 , H05K7/20 , B25D17/20
摘要： Providing an electric tool with excellent cooling efficiency. An electric tool includes: a housing 2; a motor 3; a fan 34; a sensing portion 41; a switching portion 42; and a circuit board 40. The motor 3 is accommodated in the housing 2. The motor 3 includes a stator 33, a rotor 32, and a rotating shaft 31. The rotor 32 is rotatable relative to the stator 33. The rotating shaft 31 is rotatable together with the rotor 32. The fan 34 is configured to generate a cooling air flow inside the housing 2. The sensing portion 41 is configured to detect a rotated position of the rotor 32. The switching portion 41 controls a rotation of the rotor 32. The sensing portion 41 and the switching portion 42 are mounted on the circuit board 40. The stator 33, the fan 34, the sensing portion 41, the switching portion 42, and the circuit board 40 are arranged in the housing 2 along an axial direction of the rotor 32 in the order of the fan 34, the sensing portion 41, the circuit board 40, the switching portion 42, and the stator 33.
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公开(公告)号：US11123855B2
公开(公告)日：2021-09-21
申请号：US16341389
申请日：2017-10-12
发明人： Markus Hartmann , Klaus-Peter Bohn , Bastian Pluemacher , Michael Brunner , Helene Wesseler , Carsten Peters
摘要： A control method for a borehole flushing module (2) for a chiseling tool (5), includes the steps: Providing fine-grain particles in a dispenser (31); ascertaining a material (M) at a location processed by the tool (5) with the aid of a material detector (37); and introducing fine-grain particles at the location of the substrate processed by the tool (5) when the material detector (37) ascertains an iron-containing material (M2).
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公开(公告)号：US10882153B2
公开(公告)日：2021-01-05
申请号：US16104989
申请日：2018-08-20
摘要： A vacuum dust extraction apparatus for a percussive air tool contains and extracts workplace dust created by the impacting action of the air tool's implement. The apparatus includes a clamshell adapter constructed as two halves that are oppositely disposed about the air tool's retainer, and joined to enclose the retainer, and a tubular dust bellows fastened to the outboard end of the joined clamshell halves. The clamshell adaptor includes an integral exhaust port, and an industrial vacuum coupled to the exhaust port via a flexible suction/vacuum hose creates suction in the bellows for extracting airborne dust created by percussive action of the implement on a workpiece. Suction loss through the clamshell adaptor is minimized by a sealing element that bridges a gap between the interior periphery of the clamshell adaptor and the exterior periphery of the air tool's retainer.
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