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公开(公告)号:US12163655B2
公开(公告)日:2024-12-10
申请号:US18303720
申请日:2023-04-20
Applicant: MAKITA CORPORATION
Inventor: Akihiro Hozumi , Makoto Chikaraishi
Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate including a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an outer cylindrical portion disposed radially outside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. An opening is provided in a lower portion of the outer cylindrical portion.
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公开(公告)号:US12194602B2
公开(公告)日:2025-01-14
申请号:US18239959
申请日:2023-08-30
Applicant: MAKITA CORPORATION
Inventor: Yutaka Ogiso , Makoto Chikaraishi
Abstract: A light unit is less likely to have lower light emission performance upon receiving a shock. An electric work machine includes a motor, a housing including a motor compartment accommodating the motor and a grip protruding downward from the motor compartment, an output unit located frontward from the motor and operable with a rotational force from the motor, a substrate extending above, on a left, and on a right of the output unit, and a plurality of light emitters mounted on a front surface of the substrate at intervals in a circumferential direction of the output unit. A light emitter of the plurality of light emitters nearest an apex of the substrate immediately above the output unit is at a position shifted circumferentially by a predetermined angle from the apex.
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公开(公告)号:US20240238950A1
公开(公告)日:2024-07-18
申请号:US18543064
申请日:2023-12-18
Applicant: MAKITA CORPORATION
Inventor: Yuta SUZUKI , Makoto Chikaraishi , Seiichi Ohkawara
Abstract: An impact tool includes a light emitter unit that is isolated from vibrations. An impact tool includes a motor, a hammer rotatable by the motor, an anvil strikable by the hammer in a rotation direction, a hammer case accommodating the hammer, a light emitter unit including a light emitter that illuminates an area adjacent to a front end of the anvil, and a radial elastic member supported by the hammer case and supporting the light emitter unit from radially inside.
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公开(公告)号:US12036641B2
公开(公告)日:2024-07-16
申请号:US18499267
申请日:2023-11-01
Applicant: MAKITA CORPORATION
Inventor: Takuma Iwatani , Makoto Chikaraishi , Kisho Sekido , Akira Ito
CPC classification number: B25B23/18 , F21V33/0084
Abstract: A power tool (1; 101) includes: a motor (6; 106) having a stator (61) and a rotor (63), which is rotatable relative to the stator; an output part (8; 108) disposed more forward than the motor and configured to be rotated by the motor; a motor-housing part (21; 121), which houses the motor; a grip part (22; 122) disposed downward of the motor-housing part; a battery-holding part (23; 123) disposed downward of the grip part; and a COB light (50) disposed on the battery-holding part.
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公开(公告)号:US20230366533A1
公开(公告)日:2023-11-16
申请号:US18193699
申请日:2023-03-31
Applicant: MAKITA CORPORATION
Inventor: Makoto Chikaraishi , Akihiro Hozumi , Kazunori Kinoshita
CPC classification number: F21V33/0084 , B25F5/02 , F21V29/10 , H01L33/641 , F21W2131/10
Abstract: A power tool includes: a motor; an output shaft that is rotated by a rotational force of the motor; a chip-on-board light emitting diode disposed around the output shaft; and a suppression device configured to suppress a temperature of the chip-on-board light emitting diode to a predetermined allowable value or less.
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公开(公告)号:US12196408B2
公开(公告)日:2025-01-14
申请号:US18435320
申请日:2024-02-07
Applicant: MAKITA CORPORATION
Inventor: Makoto Chikaraishi , Akihiro Hozumi , Yutaka Ogiso
IPC: F21V33/00 , B25B21/02 , B25B23/18 , B25F5/00 , H05B47/105 , H05B47/155
Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate having a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an inner cylindrical portion disposed radially inside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. The inner cylindrical portion includes a cover slope that totally reflects light from the LED chip forward.
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公开(公告)号:US11940143B2
公开(公告)日:2024-03-26
申请号:US18295868
申请日:2023-04-05
Applicant: MAKITA CORPORATION
Inventor: Makoto Chikaraishi , Akihiro Hozumi , Yutaka Ogiso
IPC: F21V33/00 , B25B21/02 , B25B23/18 , B25F5/00 , H05B47/105 , H05B47/155
CPC classification number: F21V33/0084 , B25B21/02 , B25B23/18 , B25F5/001 , H05B47/105 , H05B47/155
Abstract: A power tool includes a motor, an output shaft, a chip-on-board light emitting diode, and a light cover. The output shaft is rotated by a rotational force of the motor. The chip-on-board light emitting diode is disposed around the output shaft. The chip-on-board light emitting diode includes: a substrate having a circular ring portion; and an LED chip disposed on a front surface of the circular ring portion. The light cover is fixed to the substrate. The light cover includes: an inner cylindrical portion disposed radially inside with respect to the circular ring portion; and a light transmission portion through which light emitted from the LED chip passes. The inner cylindrical portion includes a cover slope that totally reflects light from the LED chip forward.
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公开(公告)号:US12135124B2
公开(公告)日:2024-11-05
申请号:US18244674
申请日:2023-09-11
Applicant: MAKITA CORPORATION
Inventor: Makoto Chikaraishi
Abstract: A power tool attachment efficiently guides light and provides sufficient illumination when attached to a power tool. A power tool attachment is attachable to a power tool to cover a light source included in the power tool. The power tool attachment includes a light guide being a single member made of a transparent resin. The light guide includes a light receiver that receives light from the light source when the power tool attachment is attached to the power tool, and a light emitter that outputs the received light.
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公开(公告)号:US12025303B2
公开(公告)日:2024-07-02
申请号:US18541621
申请日:2023-12-15
Applicant: MAKITA CORPORATION
Inventor: Makoto Chikaraishi , Akihiro Hozumi , Kazunori Kinoshita
IPC: F21V33/00 , B25F5/02 , F21V29/10 , F21W131/10 , F21Y115/10 , H01L33/64
CPC classification number: F21V33/0084 , B25F5/02 , F21V29/10 , H01L33/641 , F21W2131/10 , F21Y2115/10
Abstract: A power tool includes: a motor; an output shaft that is rotated by a rotational force of the motor; a chip-on-board light emitting diode disposed around the output shaft; and a suppression device configured to suppress a temperature of the chip-on-board light emitting diode to a predetermined allowable value or less.
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公开(公告)号:US11913633B2
公开(公告)日:2024-02-27
申请号:US18193699
申请日:2023-03-31
Applicant: MAKITA CORPORATION
Inventor: Makoto Chikaraishi , Akihiro Hozumi , Kazunori Kinoshita
IPC: F21V33/00 , B25F5/02 , F21V29/10 , H01L33/64 , F21Y115/10 , F21W131/10
CPC classification number: F21V33/0084 , B25F5/02 , F21V29/10 , H01L33/641 , F21W2131/10 , F21Y2115/10
Abstract: A power tool includes: a motor; an output shaft that is rotated by a rotational force of the motor; a chip-on-board light emitting diode disposed around the output shaft; and a suppression device configured to suppress a temperature of the chip-on-board light emitting diode to a predetermined allowable value or less.
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