Patents by Inventor Hidekazu Suda
Hidekazu Suda 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: 12093851Abstract: A matching system that matches a first vehicle requiring substitution when being at least either loaded into or unloaded from a parking place and a remote driver driving the first vehicle as a substitute through remote operation includes a terminal and a server. The terminal transmits substitution request information to the server. The server that has received the request information transmits waiting time information to the terminal. The terminal notifies a user or a staff of the received waiting time information, accepts a waiting time information approval or additional fee payment instructions, and settles the additional fee through cooperation with the server, upon receiving the payment instructions. The server changes the turn of the first vehicle in a queue for the remote operation service such that the first vehicle is prioritized more than a second vehicle that has not paid the additional fee, upon completing the additional fee settlement.Type: GrantFiled: June 7, 2022Date of Patent: September 17, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Toru Nishitani, Rio Suda, Hiroshi Yonenaga, Hidekazu Sasaki, Tatsushi Takenaka, Shun Ota, Akihiro Kusumoto
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Patent number: 12057797Abstract: An electric-powered wheelbarrow in one aspect of the present disclosure includes a motor, a wheel, an electromagnetic brake, a control circuit, a signal-processing circuit, and a drive circuit. The electromagnetic brake includes an electromagnetic coil. The electromagnetic brake (i) applies a braking force to the wheel in response to the electromagnetic coil being de-energized and (ii) releases the braking force from the wheel in response to the electromagnetic coil being energized. The control circuit outputs a first control signal and a second control signal. The signal-processing circuit receives the first and second control signals to thereby output a deactivating signal. The drive circuit receives the deactivating signal and delivers an excitation current to the electromagnetic coil.Type: GrantFiled: September 6, 2022Date of Patent: August 6, 2024Assignee: MAKITA CORPORATIONInventor: Hidekazu Suda
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Publication number: 20240055958Abstract: An electric work machine includes a motor, a circuit board, a case, at least one elastic member, and a filler. The circuit board includes a heat generating element mounted thereon, and the heat generating element generates heat due to the motor being driven. The case includes a heat dissipation part thermally coupled to the heat generating element and houses the circuit board therein. The at least one elastic member is placed between the circuit board and the case, and is housed inside the case. The filler is filled inside the case and fixes the circuit board and the at least one elastic member inside the case.Type: ApplicationFiled: December 15, 2021Publication date: February 15, 2024Applicant: MAKITA CORPORATIONInventors: Tsubasa YAGI, Hidekazu SUDA, Shunpei YAMAJI
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Publication number: 20230129772Abstract: An electric working machine in one aspect of the present disclosure includes: a motor; a driver to drive the motor; a first control circuit; and a second control circuit. The first control circuit controls the driver such that the motor rotates in a set rotation direction. The second control circuit is provided separately from the first control circuit. The second control circuit detects a rotation direction of the motor and performs an abnormality handling process to stop rotation of the motor in response to a situation where the detected rotation direction is reverse to the set rotation direction.Type: ApplicationFiled: December 22, 2022Publication date: April 27, 2023Applicant: MAKITA CORPORATIONInventors: Takeshi NISHIMIYA, Hidekazu SUDA
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Publication number: 20230077565Abstract: An electric-powered wheelbarrow in one aspect of the present disclosure includes a motor, a wheel, an electromagnetic brake, a control circuit, a signal-processing circuit, and a drive circuit. The electromagnetic brake includes an electromagnetic coil. The electromagnetic brake (i) applies a braking force to the wheel in response to the electromagnetic coil being de-energized and (ii) releases the braking force from the wheel in response to the electromagnetic coil being energized. The control circuit outputs a first control signal and a second control signal. The signal-processing circuit receives the first and second control signals to thereby output a deactivating signal. The drive circuit receives the deactivating signal and delivers an excitation current to the electromagnetic coil.Type: ApplicationFiled: September 6, 2022Publication date: March 16, 2023Applicant: MAKITA CORPORATIONInventor: Hidekazu SUDA
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Patent number: 11539314Abstract: An electric working machine in one aspect of the present disclosure includes: a motor; a driver to drive the motor; a first control circuit; and a second control circuit. The first control circuit controls the driver such that the motor rotates in a set rotation direction. The second control circuit is provided separately from the first control circuit. The second control circuit detects a rotation direction of the motor and performs an abnormality handling process to stop rotation of the motor in response to a situation where the detected rotation direction is reverse to the set rotation direction.Type: GrantFiled: November 22, 2017Date of Patent: December 27, 2022Assignee: MAKITA CORPORATIONInventors: Takeshi Nishimiya, Hidekazu Suda
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Publication number: 20200067435Abstract: An electric working machine in one aspect of the present disclosure includes: a motor; a driver to drive the motor; a first control circuit; and a second control circuit. The first control circuit controls the driver such that the motor rotates in a set rotation direction. The second control circuit is provided separately from the first control circuit. The second control circuit detects a rotation direction of the motor and performs an abnormality handling process to stop rotation of the motor in response to a situation where the detected rotation direction is reverse to the set rotation direction.Type: ApplicationFiled: November 22, 2017Publication date: February 27, 2020Applicant: MAKITA CORPORATIONInventors: Takeshi NISHIMIYA, Hidekazu SUDA
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Patent number: 10099392Abstract: Electric scissors comprise a motor, a movable blade, a transmission mechanism, an operation device, an operation signal output device, a control device, a drive circuit, and a forced stop device. The forced stop device is configured to stop the motor when an abnormal state is present in which the value of the operation signal output from the operation signal output device is a value determined in the control device to rotate the motor in a specific rotation direction out of the first and the second rotation directions or to stop the motor, and in which the motor is rotating in a direction opposite to the specific rotation direction.Type: GrantFiled: July 27, 2016Date of Patent: October 16, 2018Assignee: MAKITA CORPORATIONInventors: Hidekazu Suda, Motohiro Omura
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Patent number: 9793730Abstract: A motor-driven appliance comprises a drive source for driving a tool, a control unit, a power supply unit, a switch unit, a receiving unit, a supply signal output unit, and a data communication unit. The power supply unit generates a control voltage for operating the control unit. The switch unit supplies the control voltage to the control unit and stops supply of the control voltage to the control unit. The control voltage is supplied to the control unit while a given supply signal is inputted to the switch unit. The supply signal output unit outputs, to the switch unit, the supply signal for supplying the control voltage to the control unit when the receiving unit receives the electromagnetic wave while the supply of the control voltage to the control unit is stopped. The data communication unit outputs, to the control unit, the data contained in the electromagnetic wave.Type: GrantFiled: August 6, 2015Date of Patent: October 17, 2017Assignee: MAKITA CORPORATIONInventors: Hidekazu Suda, Takuya Kusakawa
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Patent number: 9634583Abstract: A motor driven appliance in one aspect of embodiments of the present disclosure comprises a motor, a first switching element, a second switching element, an operation unit, a control unit, and a monitoring unit. The first and second switching elements are provided on a current path from a power source to the motor, and are connected in series to each other. The monitoring unit monitors an operating state of a protection function by the control unit, and, when the protection function is activated, outputs an OFF signal for turning off the second switching element.Type: GrantFiled: February 3, 2015Date of Patent: April 25, 2017Assignee: MAKITA CORPORATIONInventor: Hidekazu Suda
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Publication number: 20170036359Abstract: Electric scissors comprise a motor, a movable blade, a transmission mechanism, an operation device, an operation signal output device, a control device, a drive circuit, and a forced stop device. The forced stop device is configured to stop the motor when an abnormal state is present in which the value of the operation signal output from the operation signal output device is a value determined in the control device to rotate the motor in a specific rotation direction out of the first and the second rotation directions or to stop the motor, and in which the motor is rotating in a direction opposite to the specific rotation direction.Type: ApplicationFiled: July 27, 2016Publication date: February 9, 2017Applicant: MAKITA CORPORATIONInventors: Hidekazu SUDA, Motohiro OMURA
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Patent number: 9314914Abstract: A power tool includes a motor, a rotating speed adjusting switch, a regulating member, and a control unit. The regulating member regulates an upper limit position when the switch is displaced by manipulation by a user into an upper limit of any one of stages by the manipulation by the user. The control unit controls an amount of a current flowing to the motor by a duty ratio based on a manipulation amount of the switch, thereby increasing the rotating speed of the motor in accordance with an increase of the manipulation amount. A predetermined set number of duty ratios are set for each of the stages. A proportion of the predetermined set number of duty ratios to a manipulable amount of the switch is higher in a first stage having the lowest upper limit position than in the stages other than the first stage.Type: GrantFiled: October 29, 2010Date of Patent: April 19, 2016Assignee: MAKITA CORPORATIONInventors: Hidekazu Suda, Takuya Kusakawa
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Publication number: 20160064984Abstract: A motor-driven appliance comprises a drive source for driving a tool, a control unit, a power supply unit, a switch unit, a receiving unit, a supply signal output unit, and a data communication unit. The power supply unit generates a control voltage for operating the control unit. The switch unit supplies the control voltage to the control unit and stops supply of the control voltage to the control unit. The control voltage is supplied to the control unit while a given supply signal is inputted to the switch unit. The supply signal output unit outputs, to the switch unit, the supply signal for supplying the control voltage to the control unit when the receiving unit receives the electromagnetic wave while the supply of the control voltage to the control unit is stopped. The data communication unit outputs, to the control unit, the data contained in the electromagnetic wave.Type: ApplicationFiled: August 6, 2015Publication date: March 3, 2016Inventors: Hidekazu SUDA, Takuya KUSAKAWA
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Publication number: 20150340921Abstract: An electric power tool comprises: a motor configured to drive a tool; a control unit configured to control the motor; a communication board comprising an antenna and a communication circuit, which are configured to establish close-proximity wireless communication with an external communication terminal; and a housing configured to house the motor, the control unit, and the communication board. The housing comprises a grip portion having a hollow space, which is to be gripped by a user. The communication board is arranged inside the grip portion.Type: ApplicationFiled: May 13, 2015Publication date: November 26, 2015Applicant: MAKITA CORPORATIONInventors: Hidekazu SUDA, Masaaki FUKUMOTO, Kenta EGUCHI, Kazuya ARAKAWA, Takuya KUSAKAWA
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Publication number: 20150222205Abstract: A motor driven appliance in one aspect of embodiments of the present disclosure comprises a motor, a first switching element, a second switching element, an operation unit, a control unit, and a monitoring unit. The first and second switching elements are provided on a current path from a power source to the motor, and are connected in series to each other. The monitoring unit monitors an operating state of a protection function by the control unit, and, when the protection function is activated, outputs an OFF signal for turning off the second switching element.Type: ApplicationFiled: February 3, 2015Publication date: August 6, 2015Inventor: Hidekazu SUDA
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Patent number: 8981680Abstract: An electric power tool of the present invention includes: a lighting unit; a motor that drives a tool element; a setting switch that is turned ON/OFF to change an operation mode setting and a lighting mode setting; a setting switching unit that changes the operation mode setting and the lighting mode setting corresponding to a manner of operation provided to the setting switch; a motor control unit that controls the motor according to a control method for one of the operation modes currently set by the setting switching unit; and a lighting control unit that controls the lighting unit corresponding to one of the lighting modes currently set by the setting switching unit. When the setting switch is turned on, the setting switching unit changes one of the operation mode setting and the lighting mode setting corresponding to a duration time of an ON state of the setting switch.Type: GrantFiled: September 21, 2012Date of Patent: March 17, 2015Assignee: Makita CorporationInventors: Hidekazu Suda, Takuya Kusakawa, Jun Ota
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Patent number: 8766569Abstract: A drive device of the present invention includes a pair of drive switches, a first diode, a switching element, a current detection unit, a capacitor, a second diode, and a current control unit. The first diode, the switching element, and the current detection unit are arranged, in this order from one end of an armature in a motor, on a braking current path that is formed of the armature and a field winding in the motor when the pair of drive switches is in a brake position. The second diode is adapted to keep allowing a braking current to flow through the field winding when the switching element is in an off-state by directly connecting a partial path between the switching element and the current detection unit on the braking current path and the other end of the armature.Type: GrantFiled: April 2, 2012Date of Patent: July 1, 2014Assignee: Makita CorporationInventors: Hidekazu Suda, Katsuhito Fujinami
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Patent number: 8746528Abstract: A fan switch and an ignition switch are arranged such that the moving directions of operating buttons thereof cross the moving directions of a contact lever and the moving direction of a switch lever, respectively.Type: GrantFiled: July 23, 2008Date of Patent: June 10, 2014Assignee: Makita CorporationInventors: Yoichiro Koike, Jiro Oda, Hidekazu Suda
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Patent number: 8674640Abstract: An electric power tool includes: a motor; a manipulation input receiving unit which receives a user manipulation input for rotating the motor; a mode changeover unit that has one manipulation portion which manipulated by the user; a rotation drive force transmitting unit that switches a transmission mechanism to one of the transmission mechanisms corresponding to the set position of the manipulation portion and transmits a drive force of the motor to a tool output shaft via the switched transmission mechanism; an electric signal output unit that outputs an electric signal corresponding to the set position of the manipulation portion; and a motor control unit that sets the control method of the motor to a control method preset for the electric signal, among a plurality of different types of control methods, based on the electric signal, and controls the motor by the set control method, based on manipulation by the user.Type: GrantFiled: December 22, 2011Date of Patent: March 18, 2014Assignee: Makita CorporationInventors: Hidekazu Suda, Takuya Kusakawa
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Patent number: 8453901Abstract: The electric drive tool of the invention is configured such that a lock lever is provided to reliably prevent an erroneous operation of a trigger and an operating mode can be switched by changing an operational sequence of this lock lever and a contact trip.Type: GrantFiled: June 18, 2008Date of Patent: June 4, 2013Assignee: Makita CorporationInventor: Hidekazu Suda