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公开(公告)号：US20170239802A1
公开(公告)日：2017-08-24
申请号：US15435366
申请日：2017-02-17
Applicant: MAKITA CORPORATION
Inventor： Yonosuke AOKI
Abstract: It is an object of the invention to provide a more rational vibration reducing technique for a work tool. A representative work tool 100 has an outer housing 102, an inner housing 104, a brushless motor 115, a spindle 124 having a rotation axis extending in parallel to a rotation output shaft of the brushless motor 115 and configured to be rotated on the rotation axis within a prescribed angular range to drive a tool accessory 145, a front elastic member 110a disposed between a front inner housing region 104a and a front outer housing region 102a, and a rear elastic member 110c disposed between at least one of an intermediate inner housing region 104b and a rear inner housing region 104c and at least one of an intermediate outer housing region 102b and a rear outer housing region 102c.
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公开(公告)号：US20170225316A1
公开(公告)日：2017-08-10
申请号：US15418112
申请日：2017-01-27
Applicant: MAKITA CORPORATION
Inventor： Junichi IWAKAMI , Shin NAKAMURA , Akira MIZUTANI , Takafumi KOTSUJI
Abstract: Several means 71, 72, 73, 74, and 75 are provided for restricting a relative displacement in a separating direction of half-split housings 50L, 50R. At one or more of several screw-connection parts 60 of the left and right half-split housings 50L, 50R, a press-fitting protrusion 71a is provided in an insertion hole 62a of a boss-receiving part 62 into which a screw-boss part 61 is inserted. By press-fitting the screw-boss part 61 to the boss-receiving part 62, a separation resistance may be introduced between the left and right half-split housings 50L, 50R.
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公开(公告)号：US09728822B2
公开(公告)日：2017-08-08
申请号：US14626095
申请日：2015-02-19
Applicant: MAKITA CORPORATION
Inventor： Hideyuki Taga
IPC: H02J7/00 , H02J7/14 , H01M10/613 , H01M10/42 , H01M10/46 , H01M10/6563
CPC classification number: H01M10/6563 , H01M10/42 , H01M10/46 , H01M10/613 , H02J7/0042 , H02J7/0045
Abstract: A charger has a housing with a receptacle configured to receive a battery, an electrical circuit board, a fan to circulate air within the housing and to cool the battery, and a fan-supporting member to support the fan. The fan is located above the electrical circuit board. A part of the fan-supporting member is positioned between the fan and the electrical circuit board.
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公开(公告)号：US20170222582A1
公开(公告)日：2017-08-03
申请号：US15413918
申请日：2017-01-24
Applicant: MAKITA CORPORATION
Inventor： Hitoshi SUZUKI
Abstract: An electric working machine according to one aspect of the present disclosure comprises a brushless motor, a rotational position sensor, a detector, and a calculator. The calculator detects, when the brushless motor is inertially rotated, a difference between a detection result obtained by the rotational position sensor and a detection result obtained by the detector and calculates a correction value, based on the difference, for correcting the detection result obtained by the rotational position sensor.
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公开(公告)号：US20170217004A1
公开(公告)日：2017-08-03
申请号：US15422036
申请日：2017-02-01
Applicant: MAKITA CORPORATION
Inventor： Itsuku KATO
IPC: B25C5/15
CPC classification number: B25C5/15
Abstract: A fastener driving tool is provided with a plunger, an impact spring, a motor, a drive mechanism, a motor drive control unit, a position detection unit, and a timer unit. The drive mechanism moves the plunger from a stop position to top dead center by rotation of the motor. The impact spring moves the plunger in a driving direction. The position detection unit detects that the plunger has reached a predetermined position by the rotation of the motor, and the timer unit measures time therebetween. The motor drive control unit, after power supply to the motor is cut off, performs a stop control for stopping the motor at the predetermined stop position based on the time measured by the timer unit.
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Patent Agency Ranking
公开(公告)号：US09719416B2
公开(公告)日：2017-08-01
申请号：US14262013
申请日：2014-04-25
Applicant: MAKITA CORPORATION
Inventor： Kenji Imafuku , Junichi Masuda , Yoshifumi Watanabe , Hideaki Hirano
CPC classification number: F02B75/02 , F02B25/14 , F02B25/22 , F02B63/02 , F02B2075/025
Abstract: A stratified scavenging two-stroke engine includes: an intake passage that connects an intake opening through an outer surface of a cylinder member with an intake port opening to the inside of a cylinder, and supplies gaseous mixture of fuel and air; an exhaust passage that connects an exhaust outlet opening through the outer surface of the cylinder member with an exhaust port opening to the inside of the cylinder, and discharges combustion gas; a scavenging passage; and an air passage that connects an air inlet opening through the outer surface of the cylinder member with the scavenging passage and supplies pre-scavenging air into the scavenging passage. The intake and the air inlet are arranged at positions opposite from the exhaust port across the axis of the cylinder, and arranged side by side in a substantially circumferential direction of the cylinder or a direction substantially perpendicular to the axis of the cylinder.
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公开(公告)号：US20170203418A1
公开(公告)日：2017-07-20
申请号：US15477388
申请日：2017-04-03
Applicant: MAKITA CORPORATION
Inventor： Ryunosuke KUMAGAI , Tokuo HIRABAYASHI , Hidenori NAGASAKA , Manabu SUGIMOTO
CPC classification number: B25B21/02 , B25B21/026 , B25B23/1405 , B25D11/04 , B25F5/001 , B25F5/008 , B25F5/02
Abstract: An impact driver or impact tool includes a motor, a motor housing that houses the motor, a grip housing integrally provided with the motor housing, a hammer case is disposed frontward of the motor housing, a spindle rotated by the motor, a hammer housed inside the hammer case and configured to be rotated by the spindle, and an anvil housed inside the hammer case which anvil is configured to be impacted by the hammer. In this impact driver, a length from a rear end of the motor housing to a front end of the anvil (i.e., the front-rear length of a main body) is less than 128 mm.
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公开(公告)号：US20170157753A1
公开(公告)日：2017-06-08
申请号：US15347090
申请日：2016-11-09
Applicant: MAKITA CORPORATION
Inventor： Hidenori NAGASAKA
CPC classification number: B25B21/023 , B23B45/00 , B25D16/006 , B25D2211/064 , B25D2216/0023 , B25D2216/0038 , B25F5/00 , B25F5/001
Abstract: An electric power tool includes a housing, a motor, a deceleration mechanism, a final output shaft, a vibration mechanism, a vibration switching member, a stop member, and an expansion prevention portion. The vibration mechanism provides a vibration in an axial direction to the final output shaft. The vibration switching member is accommodated in a slit axially disposed on a front end of a tubular portion and moved back and forth in the slit by an operation from outside to switch on and off actuation of the vibration mechanism. The stop member is installed on the front end of the tubular portion to cover the slit. The expansion prevention portion is disposed on the stop member and is brought in contact with an outer periphery of the front end of the tubular portion to prevent the front end of the tubular portion from expanding,
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公开(公告)号：US20170155254A1
公开(公告)日：2017-06-01
申请号：US15361210
申请日：2016-11-25
Applicant: MAKITA CORPORATION
Inventor： Junichi KATAYAMA , Masafumi NODA , Tadahiko KOBAYAKAWA
IPC: H02J7/00
Abstract: A battery device of one aspect of the present disclosure comprises a chargeable and dischargeable battery; a detection unit that detects a state of the battery; and a control unit. The control unit calculates a value of a maximum charging current that can be supplied to the battery during charging of the battery on the basis of the state of the battery detected by the detection unit, and notifies a result of such calculation to a charging device.
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公开(公告)号：US20170136599A1
公开(公告)日：2017-05-18
申请号：US15316314
申请日：2015-06-02
Applicant: MAKITA CORPORATION
Inventor： Yonosuke AOKI
Abstract: An electric oscillating tool has an electric motor having an output shaft, an eccentric shaft that is connected to one end region of the output shaft, and a weight that is connected to the other end region of the output shaft. A blade as a tool accessory is driven to reciprocally rotate around a spindle by reciprocating motion of the eccentric shaft in a transverse direction of the electric oscillating tool. The weight is driven to cancel out the inertial force of the eccentric shaft, so that the output shaft is stably rotated.
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