Patents by Inventor Hideki Kachi
Hideki Kachi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11812542Abstract: A circuit module 2 comprises: a wiring structure 4; at least one electronic component 6a, 6b arranged on the upper surface of the wiring structure 4; an insulating resin layer 8 which is provided on the upper surface of the wiring structure 4 and in which at least one electronic component 6a, 6b is embedded; and a metal layer 10 provided on the upper surface of the insulating resin layer 8. The surface roughness of the portion S1 directly above each electronic component on the upper surface of the insulating resin layer 8 is expressed as R1. The surface roughness of the portion S2 other than the portion directly above all the electronic components on the upper surface of the insulating resin layer 8 is expressed as R2. At least one R1 satisfies the condition: R1>R2.Type: GrantFiled: February 2, 2023Date of Patent: November 7, 2023Assignee: TDK CORPORATIONInventors: Shuichi Takizawa, Hironori Sato, Atsushi Yoshino, Hideki Kachi
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Publication number: 20230286186Abstract: A working machine may include a working part, a body including a motor accommodating part, a fan accommodated in the motor accommodating part and a motor accommodated in the motor accommodating part and configured to drive the working part and the fan. The fan may include a disk plate including a circular opening defined at a center of the disk plate, a plurality of vanes attached to the disk plate, and a cover part. The plurality of vanes may be covered by the disk plate and the cover part in an axial direction.Type: ApplicationFiled: March 6, 2023Publication date: September 14, 2023Applicant: Makita CorporationInventors: Daisuke SUZUKI, Masayoshi Okumi, Hideki Kachi
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Publication number: 20230189491Abstract: A circuit module 2 comprises: a wiring structure 4; at least one electronic component 6a, 6b arranged on the upper surface of the wiring structure 4; an insulating resin layer 8 which is provided on the upper surface of the wiring structure 4 and in which at least one electronic component 6a, 6b is embedded; and a metal layer 10 provided on the upper surface of the insulating resin layer 8. The surface roughness of the portion S1 directly above each electronic component on the upper surface of the insulating resin layer 8 is expressed as R1. The surface roughness of the portion S2 other than the portion directly above all the electronic components on the upper surface of the insulating resin layer 8 is expressed as R2. At least one R1 satisfies the condition: R1>R2.Type: ApplicationFiled: February 2, 2023Publication date: June 15, 2023Applicant: TDK CORPORATIONInventors: Shuichi TAKIZAWA, Hironori SATO, Atsushi YOSHINO, Hideki KACHI
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Publication number: 20230112387Abstract: The description herein discloses a chainsaw, which may include: a saw chain; a guide bar equipped with the saw chain; a sprocket for running the saw chain along a periphery of the guide bar; a motor including an output shaft connected to the sprocket; a cooling fan connected to the output shaft; and a base member for holding the guide bar. The base member may be constituted of a heat conductive material having a thermal conductivity of 10 W/m•K or more when a temperature of the heat conductive material is 300 K. The base member may include: a plate portion arranged such that the plate portion faces the motor in a direction along the output shaft; and a rib portion protruding from the plate portion toward the motor.Type: ApplicationFiled: September 22, 2022Publication date: April 13, 2023Applicant: MAKITA CORPORATIONInventors: Hideki KACHI, Tsunahisa NAKAMURA
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Publication number: 20230099820Abstract: A chainsaw may include a saw chain; a guide bar, a sprocket, a prime mover, a housing, a sprocket cover, and a guide member. The guide bar, the housing and the sprocket cover may define a chain passage. The guide member may include a first facing surface having an arc shape centered on the rotation axis and a second facing surface having an arc shape centered on a position offset from the rotation axis. When the chainsaw is placed on a horizontal mounting surface and viewed in the direction along the rotation axis, an angle between (i) a straight line connecting the rotation axis and a position where the first facing surface and the second facing surface are connected and (ii) a horizontal plane may be in a range of ?10 degrees to 25 degrees.Type: ApplicationFiled: September 22, 2022Publication date: March 30, 2023Applicant: MAKITA CORPORATIONInventors: Hideki KACHI, Tsunahisa Nakamura
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Patent number: 11606888Abstract: A circuit module 2 comprises: a wiring structure 4; at least one electronic component 6a, 6b arranged on the upper surface of the wiring structure 4; an insulating resin layer 8 which is provided on the upper surface of the wiring structure 4 and in which at least one electronic component 6a, 6b is embedded; and a metal layer 10 provided on the upper surface of the insulating resin layer 8. The surface roughness of the portion S1 directly above each electronic component on the upper surface of the insulating resin layer 8 is expressed as R1. The surface roughness of the portion S2 other than the portion directly above all the electronic components on the upper surface of the insulating resin layer 8 is expressed as R2. At least one R1 satisfies the condition: R1>R2.Type: GrantFiled: June 21, 2021Date of Patent: March 14, 2023Assignee: TDK CORPORATIONInventors: Shuichi Takizawa, Hironori Sato, Atsushi Yoshino, Hideki Kachi
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Patent number: 11446841Abstract: A chainsaw includes a handle with a handgrip; an electric motor for endlessly moving a saw chain; a control unit for controlling rotation of the motor; and a main power switch switchable between an ON state and an OFF state. The handgrip is provided with a gripping detection device for detecting whether the handgrip is gripped by the worker, and the chainsaw is configured to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is gripped, maintain the main power switch in the ON state, and to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is not gripped, switch the main power switch to the OFF state.Type: GrantFiled: May 21, 2020Date of Patent: September 20, 2022Assignee: MAKITA CORPORATIONInventors: Hideki Kachi, Koji Haneda, Tsunahisa Nakamura
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Patent number: 11154943Abstract: Disclosed is a chainsaw capable of making it less likely that vibrations due to driving of an electric motor and a endless movement of a saw chain are transmitted to a worker, thereby enabling the worker to become less likely to be fatigued even in work using the chainsaw. The chainsaw includes an electric motor provided inside a body casing; a guide bar provided in a front portion of the body casing in such a manner as to protrude forwardly; a saw chain provided around an outer periphery of the guide bar in an endlessly movable manner, and configured to be endlessly moved along the outer periphery of the guide bar under driving of the electric motor; a handle section provided with respect to the body casing, and configured to be gripped by a worker; and an anti-vibration member interposed between the body casing and the handle section.Type: GrantFiled: March 6, 2017Date of Patent: October 26, 2021Assignee: MAKITA CORPORATIONInventors: Hideki Kachi, Koji Haneda, Masaki Sakuragi
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Publication number: 20210315137Abstract: A circuit module 2 comprises: a wiring structure 4; at least one electronic component 6a, 6b arranged on the upper surface of the wiring structure 4; an insulating resin layer 8 which is provided on the upper surface of the wiring structure 4 and in which at least one electronic component 6a, 6b is embedded; and a metal layer 10 provided on the upper surface of the insulating resin layer 8. The surface roughness of the portion 51 directly above each electronic component on the upper surface of the insulating resin layer 8 is expressed as R1. The surface roughness of the portion S2 other than the portion directly above all the electronic components on the upper surface of the insulating resin layer 8 is expressed as R2. At least one R1 satisfies the condition: R1>R2.Type: ApplicationFiled: June 21, 2021Publication date: October 7, 2021Applicant: TDK CORPORATIONInventors: Shuichi TAKIZAWA, Hironori SATO, Atsushi YOSHINO, Hideki KACHI
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Patent number: 11076513Abstract: A circuit module 2 comprises: a wiring structure 4; at least one electronic component 6a, 6b arranged on the upper surface of the wiring structure 4; an insulating resin layer 8 which is provided on the upper surface of the wiring structure 4 and in which at least one electronic component 6a, 6b is embedded; and a metal layer 10 provided on the upper surface of the insulating resin layer 8. The surface roughness of the portion S1 directly above each electronic component on the upper surface of the insulating resin layer 8 is expressed as R1. The surface roughness of the portion S2 other than the portion directly above all the electronic components on the upper surface of the insulating resin layer 8 is expressed as R2. At least one R1 satisfies the condition: R1>R2.Type: GrantFiled: February 25, 2019Date of Patent: July 27, 2021Assignee: TDK CORPORATIONInventors: Shuichi Takizawa, Hironori Sato, Atsushi Yoshino, Hideki Kachi
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Patent number: 10981291Abstract: To provide an easy-to-use electric chainsaw that uses, in place of a large battery pack with a high voltage rating that would have been used in conventional electric chainsaws, a battery power source composed of a set of small commonly used battery packs of the same rating. An electric chainsaw having a built-in electric motor that is powered by a rechargeable battery, wherein a set of commonly used battery packs of the same rating is used as the rechargeable battery. The set of battery packs is mounted at the back of the main housing so that the center of gravity (G) of the chainsaw is positioned within a range (R) of 1.5 time the width (W) of the grip section of a rear handle between the left and right sides of a center line that is centered in the horizontal direction.Type: GrantFiled: July 26, 2019Date of Patent: April 20, 2021Assignee: MAKITA CORPORATIONInventors: Koji Haneda, Hideki Kachi, Yasuyuki Kawabata
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Publication number: 20200338780Abstract: A chain saw may comprise a braking mechanism; a housing including a first space and a second space in which the braking mechanism is disposed; and an operation member. The housing may include a through hole communicating the second space to outside of the housing. The operation member may be disposed over the second space and the outside of the housing through the through hole. The operation member may be movable between a braking position where the operation member causes the braking mechanism to interrupt rotation of a saw chain and a driving position where the operation member causes the braking mechanism not to interrupt the rotation of the saw chain. The braking mechanism may comprise a connecting member that moves in the second space in conjunction with movement of the operation member. The housing may include an opening communicating the first space to the second space.Type: ApplicationFiled: April 21, 2020Publication date: October 29, 2020Applicant: MAKITA CORPORATIONInventors: Yoshifumi Watanabe, Junichi Masuda, Hideki Kachi, Tsunahisa Nakamura
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Publication number: 20200282590Abstract: A chainsaw includes a handle with a handgrip; an electric motor for endlessly moving a saw chain; a control unit for controlling rotation of the motor; and a main power switch switchable between an ON state and an OFF state. The handgrip is provided with a gripping detection device for detecting whether the handgrip is gripped by the worker, and the chainsaw is configured to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is gripped, maintain the main power switch in the ON state, and to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is not gripped, switch the main power switch to the OFF state.Type: ApplicationFiled: May 21, 2020Publication date: September 10, 2020Applicant: MAKITA CORPORATIONInventors: Hideki KACHI, Koji Haneda, Tsunahisa Nakamura
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Patent number: 10695943Abstract: A chainsaw includes a handle with a handgrip; an electric motor for endlessly moving a saw chain; a control unit for controlling rotation of the motor; and a main power switch switchable between an ON state and an OFF state. The handgrip is provided with a gripping detection device for detecting whether the handgrip is gripped by the worker, and the chainsaw is configured to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is gripped, maintain the main power switch in the ON state, and to, when the control unit is manipulated to deactivate the electric motor in a state in which the gripping detection device detects that the handgrip is not gripped, switch the main power switch to the OFF state.Type: GrantFiled: July 7, 2016Date of Patent: June 30, 2020Assignee: MAKITA CORPORATIONInventors: Hideki Kachi, Koji Haneda, Tsunahisa Nakamura
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Publication number: 20190381687Abstract: To provide an easy-to-use electric chainsaw that uses, in place of a large battery pack with a high voltage rating that would have been used in conventional electric chainsaws, a battery power source composed of a set of small commonly used battery packs of the same rating. An electric chainsaw having a built-in electric motor that is powered by a rechargeable battery, wherein a set of commonly used battery packs of the same rating is used as the rechargeable battery. The set of battery packs is mounted at the back of the main housing so that the center of gravity (G) of the chainsaw is positioned within a range (R) of 1.5 time the width (W) of the grip section of a rear handle between the left and right sides of a center line that is centered in the horizontal direction.Type: ApplicationFiled: July 26, 2019Publication date: December 19, 2019Applicant: MAKITA CORPORATIONInventors: Koji HANEDA, Hideki KACHI, Yasuyuki KAWABATA
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Patent number: 10406713Abstract: To provide an easy-to-use electric chainsaw that uses, in place of a large battery pack with a high voltage rating that would have been used in conventional electric chainsaws, a battery power source composed of a set of small commonly used battery packs of the same rating. An electric chainsaw having a built-in electric motor that is powered by a rechargeable battery, wherein a set of commonly used battery packs of the same rating is used as the rechargeable battery. The set of battery packs is mounted at the back of the main housing so that the center of gravity (G) of the chainsaw is positioned within a range (R) of 1.5 time the width (W) of the grip section of a rear handle between the left and right sides of a center line that is centered in the horizontal direction.Type: GrantFiled: July 8, 2015Date of Patent: September 10, 2019Assignee: MAKITA CORPORATIONInventors: Koji Haneda, Hideki Kachi, Yasuyuki Kawabata
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Publication number: 20190269046Abstract: A circuit module 2 comprises: a wiring structure 4; at least one electronic component 6a, 6b arranged on the upper surface of the wiring structure 4; an insulating resin layer 8 which is provided on the upper surface of the wiring structure 4 and in which at least one electronic component 6a, 6b is embedded; and a metal layer 10 provided on the upper surface of the insulating resin layer 8. The surface roughness of the portion 51 directly above each electronic component on the upper surface of the insulating resin layer 8 is expressed as R1. The surface roughness of the portion S2 other than the portion directly above all the electronic components on the upper surface of the insulating resin layer 8 is expressed as R2. At least one R1 satisfies the condition: R1>R2.Type: ApplicationFiled: February 25, 2019Publication date: August 29, 2019Applicant: TDK CORPORATIONInventors: Shuichi TAKIZAWA, Hironori SATO, Atsushi YOSHINO, Hideki KACHI
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Patent number: 10328600Abstract: An electric chainsaw includes a first handle having a grip portion that is provided with a trigger switch for activating an electric motor. The electric chainsaw includes a second handle having a laterally extending grip portion provided forward of the grip portion of the first handle. The electric chainsaw includes an indicator lamp for indicating a remaining charge amount of a battery pack, and a push-button type indicator switch for causing the indicator lamp to indicate the remaining charge amount. The indicator switch is provided at a position where the worker can operate the indicator switch by a finger of the other hand gripping the grip portion of the second handle.Type: GrantFiled: October 1, 2015Date of Patent: June 25, 2019Assignee: MAKITA CORPORATIONInventors: Hideki Kachi, Yasuyuki Kawabata, Koji Haneda
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Patent number: D899881Type: GrantFiled: April 9, 2019Date of Patent: October 27, 2020Assignee: MAKITA CORPORATIONInventors: Koji Takahashi, Kento Nakamura, Hideki Kachi
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Patent number: D1000244Type: GrantFiled: December 29, 2021Date of Patent: October 3, 2023Assignee: MAKITA CORPORATIONInventors: Kento Nakamura, Hideki Kachi