Patents by Inventor Satoshi Ninagawa
Satoshi Ninagawa 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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Publication number: 20240173839Abstract: A power tool has a motor, an output shaft, a spindle, a gear, a gear housing and a bearing. The spindle is configured to be rotated around a drive axis crossing an extending direction of the output shaft. The gear is fitted on the spindle and configured to transmit rotation of the output shaft to the spindle. The gear housing houses the spindle, the gear and the bearing with the lower end part of the spindle protruded downward. The bearing is arranged on the radially outer side of the gear and configured to support the spindle so as to be rotatable around the drive axis.Type: ApplicationFiled: November 21, 2023Publication date: May 30, 2024Applicant: MAKITA CORORATIONInventors: Takahiro KAWAKAMI, Satoshi Ninagawa, Ryosuke OTANI, Shinichi HONMA
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Patent number: 11985583Abstract: A communication control apparatus is configured to store communicability information, configured to control an update of the communicability information, configured to acquire a first route as a scheduled route along which the communication control apparatus moves, configured to control communication with the external device during moving of the communication control apparatus to control the update of the communicability information, based on the first route, the communicability information, and a communication detail requested by the communication control apparatus and the external device, configured to perform communication with the external device, configured to collect data required for the update of the communicability information through communication with the external device, and configured to control the update of the communicability information based on the collected data.Type: GrantFiled: October 1, 2021Date of Patent: May 14, 2024Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Yuji Ninagawa, Satoshi Niwa
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Patent number: 11980991Abstract: An electric power tool disclosed herein may include a motor; a power transmission mechanism connected to the motor; a housing that houses the motor and the power transmission mechanism; a tip tool holder connected to the power transmission mechanism; a cover covering the tip tool holder partially; a first locking mechanism configured to switch between a first locking state and a first unlocked state; and a second locking mechanism configured to switch between a second locking state and a second unlocked state. In the electric power tool, the cover may become detachable from the housing when the user performs the second unlocking operation on the second locking mechanism and the first unlocking operation on the first locking mechanism.Type: GrantFiled: August 1, 2019Date of Patent: May 14, 2024Assignee: MAKITA CORPORATIONInventors: Kenichi Tabushi, Akira Mizutani, Ken Goto, Kenji Shibata, Hideharu Muto, Satoshi Ninagawa, Junya Ishikawa, Takafumi Kotsuji
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Patent number: 11964356Abstract: A hand-held tool, such as a disc grinder, is used to perform work at a high work site, a countermeasure is taken to prevent the hand-held tool from falling by using a suspension tool, such as a tether strap. If a coupling part that couples the suspension tool to the hand-held tool is damaged, this fact is notified to a user. Thereby, an original function of the suspension tool can be reliably performed. If a large impact is applied to a coupling member via a suspension tool, the coupling member is displaced to a second position, due to the deformation of a first position retaining member. A conductive portion disengages from contacts to cause a power circuit to be shut off, thereby prohibiting a main body part from being activated.Type: GrantFiled: March 27, 2019Date of Patent: April 23, 2024Assignee: MAKITA CORPORATIONInventors: Ryosuke Otani, Junya Ishikawa, Takafumi Kotsuji, Satoshi Ninagawa, Ken Goto, Yu Eto
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Publication number: 20220234161Abstract: A rotary tool includes simple wiring from the controller. A grinder includes a housing, a motor accommodated in the housing, a final output shaft accommodated in the housing to receive a tip tool and rotatable by the motor being driven, and a plurality of controllers accommodated in the housing. The plurality of controllers include at least a first controller receiving an electrical component of the grinder on an outer surface of the first controller. The electrical component performs an electrical operation.Type: ApplicationFiled: December 20, 2021Publication date: July 28, 2022Applicant: MAKITA CORPORATIONInventors: Satoshi NINAGAWA, Ryosuke OTANI
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Publication number: 20210299813Abstract: An electric power tool disclosed herein may include a motor; a power transmission mechanism connected to the motor; a housing that houses the motor and the power transmission mechanism; a tip tool holder connected to the power transmission mechanism; a cover covering the tip tool holder partially; a first locking mechanism configured to switch between a first locking state and a first unlocked state; and a second locking mechanism configured to switch between a second locking state and a second unlocked state. In the electric power tool, the cover may become detachable from the housing when the user performs the second unlocking operation on the second locking mechanism and the first unlocking operation on the first locking mechanism.Type: ApplicationFiled: August 1, 2019Publication date: September 30, 2021Applicant: MAKITA CORPORATIONInventors: Kenichi TABUSHI, Akira MIZUTANI, Ken GOTO, Kenji SHIBATA, Hideharu MUTO, Satoshi NINAGAWA, Junya ISHIKAWA, Takafumi KOTSUJI
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Publication number: 20210053175Abstract: A hand-held tool, such as a disc grinder, is used to perform work at a high work site, a countermeasure is taken to prevent the hand-held tool from falling by using a suspension tool, such as a tether strap. If a coupling part that couples the suspension tool to the hand-held tool is damaged, this fact is notified to a user. Thereby, an original function of the suspension tool can be reliably performed. If a large impact is applied to a coupling member via a suspension tool, the coupling member is displaced to a second position, due to the deformation of a first position retaining member. A conductive portion disengages from contacts to cause a power circuit to be shut off, thereby prohibiting a main body part from being activated.Type: ApplicationFiled: March 27, 2019Publication date: February 25, 2021Applicant: MAKITA CORPORATIONInventors: Ryosuke OTANI, Junya ISHIKAWA, Takafumi KOTSUJI, Satoshi NINAGAWA, Ken GOTO, Yu ETO
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Patent number: 10410811Abstract: A power tool (1) includes an electric motor (2) as a drive source and a start switch (20; 61) that starts the electric motor (2) and is lockable in an ON position in a lock-ON state. An electromagnetic actuator (30; 40; 50; 60) pushes out or pulls in an actuation pin (30a; 40a; 50a; 60a) with respect to a body of the electromagnetic actuator (30; 40; 50; 60) in response to cutting off of a supply of electrical current to the power tool (1). The pushed-out or pulled-in actuation pin, directly or indirectly, disengages the start switch (20; 61) from the lock-ON state and/or prevents the start switch (20; 61) from being shifted into the lock-ON state.Type: GrantFiled: September 14, 2016Date of Patent: September 10, 2019Assignee: MAKITA CORPORATIONInventors: Takamasa Hanai, Hikaru Sunabe, Satoshi Ninagawa, Shin Nakamura, Masatoshi Nakahama, Kazusa Fukuda, Kenichi Miyata
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Patent number: 10357868Abstract: A grinder includes a motor, a housing, a spindle and a cover. The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The cover is provided on the spindle in the circumferential direction and at least partially covers a tool accessory, which is mounted on the spindle. The cover is configured such that at least one part deforms and/or is composed of an elastic material.Type: GrantFiled: September 7, 2016Date of Patent: July 23, 2019Assignee: MAKITA CORPORATIONInventors: Takahiro Kawakami, Satoshi Ninagawa, Kenji Shibata, Ryosuke Otani, Ryo Imuta
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Patent number: 10286516Abstract: A polisher may include a polishing pad, a motor, a transmission device, and a mode selection device. The transmission device can transmit a rotational drive force of the motor to the polishing pad in a plurality of different modes with respect to a motion of the polishing pad. The mode selection device may be used for selecting a desired motion mode of the output member. Additionally, a motor and handle housing with an accompanying power cord may be constructed to aid in ease of manipulation of the polisher by the user with minimal interference.Type: GrantFiled: October 6, 2016Date of Patent: May 14, 2019Assignee: MAKITA CORPORATIONInventors: Junya Ishikawa, Satoshi Ninagawa
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Publication number: 20170125192Abstract: A power tool (1) includes an electric motor (2) as a drive source and a start switch (20; 61) that starts the electric motor (2) and is lockable in an ON position in a lock-ON state. An electromagnetic actuator (30; 40; 50; 60) pushes out or pulls in an actuation pin (30a; 40a; 50a; 60a) with respect to a body of the electromagnetic actuator (30; 40; 50; 60) in response to cutting off of a supply of electrical current to the power tool (1). The pushed-out or pulled-in actuation pin, directly or indirectly, disengages the start switch (20; 61) from the lock-ON state and/or prevents the start switch (20; 61) from being shifted into the lock-ON state.Type: ApplicationFiled: September 14, 2016Publication date: May 4, 2017Inventors: Takamasa HANAI, Hikaru SUNABE, Satoshi NINAGAWA, Shin NAKAMURA, Masatoshi NAKAHAMA, Kazusa FUKUDA, Kenichi MIYATA
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Publication number: 20170106491Abstract: A polisher may include a polishing pad, a motor, a transmission device, and a mode selection device. The transmission device can transmit a rotational drive force of the motor to the polishing pad in a plurality of different modes with respect to a motion of the polishing pad. The mode selection device may be used for selecting a desired motion mode of the output member. Additionally, a motor and handle housing with an accompanying power cord may be constructed to aid in ease of manipulation of the polisher by the user with minimal interference.Type: ApplicationFiled: October 6, 2016Publication date: April 20, 2017Applicant: MAKITA CORPORATIONInventors: Junya ISHIKAWA, Satoshi NINAGAWA
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Publication number: 20170072532Abstract: A grinder includes a motor, a housing, a spindle and a cover. The spindle protrudes downward from the housing, is driven by the motor, and thereby rotates. The cover is provided on the spindle in the circumferential direction and at least partially covers a tool accessory, which is mounted on the spindle. The cover is configured such that at least one part deforms and/or is composed of an elastic material.Type: ApplicationFiled: September 7, 2016Publication date: March 16, 2017Inventors: Takahiro KAWAKAMI, Satoshi NINAGAWA, Kenji SHIBATA, Ryosuke OTANI, Ryo IMUTA
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Patent number: 8210277Abstract: A housing for a power tool includes a plurality of housing segments assembled together to form the housing. A gap is produced between mating surfaces of at least two housing segments positioned adjacent to each other. A capillary action preventing device disposed at the gap and constructed to interrupt a path of flow of a liquid caused by a capillary action from the inside to the outside of the housing along the gap.Type: GrantFiled: October 23, 2008Date of Patent: July 3, 2012Assignee: Makita CorporationInventors: Kenji Umeda, Satoshi Ninagawa
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Publication number: 20090107691Abstract: A housing for a power tool includes a plurality of housing segments assembled together to form the housing. A gap is produced between mating surfaces of at least two housing segments positioned adjacent to each other. A capillary action preventing device disposed at the gap and constructed to interrupt a path of flow of a liquid caused by a capillary action from the inside to the outside of the housing along the gap.Type: ApplicationFiled: October 23, 2008Publication date: April 30, 2009Applicant: MAKITA CORPORATIONInventors: Kenji Umeda, Satoshi Ninagawa