Patents by Inventor Hideaki Takano
Hideaki Takano 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: 12349854Abstract: A work machine includes microphones inside the housing. The microphones are configured to collect sound inside the housing, and output sound signals that are electrical signals corresponding to the collected sound. The sound includes an operating noise generated inside the housing due to motion of a machine. The microphones are arranged at different locations inside the housing. The work machine is configured to execute a process related to the operating noise based on the sound signals from the microphones.Type: GrantFiled: September 29, 2022Date of Patent: July 8, 2025Assignee: MAKITA CORPORATIONInventor: Hideaki Takano
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Patent number: 12310546Abstract: The work machine includes a path leading into a housing from an opening. The path is provided to control an airflow generated by motion of a machine. The work machine includes a microphone. The microphone is configured to collect sound in the housing, including operating noise generated in the housing by the motion of the machine. The work machine further includes a structure that defines a receiving space for the microphone along the path through which the operating noise propagates outside the housing. The structure includes an open structure that connects the receiving space with the path and faces downstream in the path. The structure surrounds the receiving space upstream of the open structure in the path.Type: GrantFiled: September 22, 2022Date of Patent: May 27, 2025Assignee: MAKITA CORPORATIONInventor: Hideaki Takano
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Publication number: 20250147075Abstract: A current sensor which suppresses deterioration of detection accuracy caused by high temperature of electronic components due to heat of a bus bar and is suitable for measurement of large current includes a bus bar through which a current to be measured flows, a magnetic detector detecting a magnetic field generated by the bus bar, and a case integrally formed with the bus bar and having a storage space storing the magnetic detector. The magnetic detector is spaced away from and faces the bus bar. The bus bar is on a first surface of the storage space defining the storage space and facing the magnetic detector. A low thermal conductivity material having a lower thermal conductivity than a resin-based material forming the case is provided between the bus bar and the magnetic detector to contact an opposing surface, on the bus bar, facing the magnetic detector.Type: ApplicationFiled: January 9, 2025Publication date: May 8, 2025Inventors: Manabu TAMURA, Keisuke NAKAYAMA, Hideaki TAKANO, Takashi KAWAHATA
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Publication number: 20250147076Abstract: A current sensor includes busbars through which a current to be measured flows, magnetic detectors capable of detecting a magnetic field generated when the current to be measured flows through the busbars, a storage space storing the magnetic detectors, and a housing with which part of the busbars is integrated. Ends of the busbars are connected to an external first unit including a cooling device, and other ends of the busbars are connected to an external second unit whose temperature becomes higher than that of the first unit when the current to be measured flows. In the current sensor, which is capable of measuring a current value of the current to be measured from a result of the detection performed by the magnetic detectors, the housing has first vents penetrating from the inside of the storage space to the outside on a side facing the first unit.Type: ApplicationFiled: January 8, 2025Publication date: May 8, 2025Inventors: Keisuke NAKAYAMA, Hirofumi OKUMURA, Manabu TAMURA, Hideaki TAKANO
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Publication number: 20240352052Abstract: One aspect of the present invention is a method for producing a compound represented by following general formula (1), the method being characterized by including a step of mixing ethylene, a compound represented by following general formula (2), and a compound represented by following general formula (3) to react with each other to give a compound represented by following general formula (4): A1 to A4 each independently represent an aromatic group, and Z1 and Z2 each independently represent an oxygen atom, a sulfur atom, or a borane (BH3), Z3 represents an oxygen atom or a sulfur atom, n1 to n3 each independently represent 0 or 1, and X represents a halogen atom.Type: ApplicationFiled: August 10, 2022Publication date: October 24, 2024Inventors: Tsuyoshi Mita, Satoshi Maeda, Hideaki Takano
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Publication number: 20240248121Abstract: A current sensor has a bus bar through which a current under measurement flows, a magnetism sensing portion placed so as to face the bus bar in an X direction, and a chassis that incorporates the magnetism sensing portion and part of the bus bar. In a Y direction orthogonal to the X direction, the bus bar has a first connection end protruding from a Y1 side of the chassis and a second connection end protruding from a Y2 side of the chassis. The first connection end and second connection end are at different positions in the X direction when viewed from a Z direction orthogonal to the X direction and Y direction. An opposing portion, facing the magnetism sensing portion, of the bus bar crosses the Y direction when viewed from the Z direction.Type: ApplicationFiled: December 11, 2023Publication date: July 25, 2024Inventors: Yuu KUMAGAI, Manabu TAMURA, Hideaki TAKANO
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Publication number: 20240032748Abstract: A nozzle includes: a main body having a lower surface that faces a cleaning target surface; a groove provided on the lower surface and recessed upward from the lower surface; and a suction port provided inside the groove and facing the cleaning target surface. The groove includes: a first groove; and a second groove at least a part of which is provided in the rear of the first groove. A depth H1 of the first groove is deeper than a depth H2 of the second groove.Type: ApplicationFiled: July 3, 2023Publication date: February 1, 2024Applicant: MAKITA CORPORATIONInventor: Hideaki TAKANO
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Patent number: 11841033Abstract: An electric powered work machine according to one aspect of the present disclosure includes a first and a second digital filters, a control sound source, an error sensor, and a characteristics adjustor. The first digital filter includes a series of taps and generates a control signal. The control sound source produces an artificial noise in accordance with the control signal. The error sensor converts a synthesized sound of the artificial noise and a target noise at a canceling location to an error signal. The second digital filter includes N taps and generates a filtered reference signal. The characteristics adjustor uses the error signal and the filtered reference signal to adjust a coefficient of each tap of M taps in the series of taps. Each of M and N is a positive integer satisfying M<N.Type: GrantFiled: January 25, 2022Date of Patent: December 12, 2023Assignee: MAKITA CORPORATIONInventor: Hideaki Takano
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Patent number: 11672396Abstract: A dust extractor (1) includes a motor (30) and a blower fan (40), which is disposed downward of the motor and is connected to the motor. The dust extractor further includes a flexible (pliable) support member (50; 500), which has a lower-end portion (52) connected to the motor and suspends the motor.Type: GrantFiled: September 16, 2020Date of Patent: June 13, 2023Assignee: MAKITA CORPORATIONInventor: Hideaki Takano
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Publication number: 20230137143Abstract: A work machine includes a housing. The housing at least partly houses a machine. The housing has an opening. The work machine includes a path leading into the housing from the opening. The work machine includes a controller and a speaker. The controller is configured to cause a speaker to output a control sound for reducing operating noise. The operating noise is generated in the housing by motion of the machine and propagates in the path from a source of the operating noise to the opening. The speaker is arranged so that the control sound propagates in the path with its wavefront parallel to a wavefront of the operating noise that propagates in the path.Type: ApplicationFiled: October 19, 2022Publication date: May 4, 2023Applicant: MAKITA CORPORATIONInventors: Hideaki TAKANO, Hirofumi MIYAZATO
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Publication number: 20230121653Abstract: A work machine includes microphones inside the housing. The microphones are configured to collect sound inside the housing, and output sound signals that are electrical signals corresponding to the collected sound. The sound includes an operating noise generated inside the housing due to motion of a machine. The microphones are arranged at different locations inside the housing. The work machine is configured to execute a process related to the operating noise based on the sound signals from the microphones.Type: ApplicationFiled: September 29, 2022Publication date: April 20, 2023Applicant: MAKITA CORPORATIONInventor: Hideaki TAKANO
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Publication number: 20230114011Abstract: The work machine includes a path leading into a housing from an opening. The path is provided to control an airflow generated by motion of a machine. The work machine includes a microphone. The microphone is configured to collect sound in the housing, including operating noise generated in the housing by the motion of the machine. The work machine further includes a structure that defines a receiving space for the microphone along the path through which the operating noise propagates outside the housing. The structure includes an open structure that connects the receiving space with the path and faces downstream in the path. The structure surrounds the receiving space upstream of the open structure in the path.Type: ApplicationFiled: September 22, 2022Publication date: April 13, 2023Applicant: MAKITA CORPORATIONInventor: Hideaki TAKANO
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Patent number: 11491433Abstract: A backpack dust collector includes a housing, a slit portion, and a noise-absorbing member. The housing includes a suction port, a dust collecting chamber, a motor chamber, and an exhaust port. The dust collecting chamber is connected to the suction port and configured to accommodate a dust collecting bag. The motor chamber is connected to the dust collecting chamber and accommodates a fan and a motor. Through the exhaust port, air from the motor chamber is discharged. The slit portion is disposed in a flow path between the motor chamber and the exhaust port and includes at least one slit-shaped vent through which air from the motor chamber passes. The noise-absorbing member is disposed in at least part of a flow path between the vent and the exhaust port.Type: GrantFiled: March 2, 2020Date of Patent: November 8, 2022Assignee: MAKITA CORPORATIONInventors: Hideaki Takano, Makoto Hotta, Takayuki Tahara
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Publication number: 20220235798Abstract: An electric powered work machine according to one aspect of the present disclosure includes a first and a second digital filters, a control sound source, an error sensor, and a characteristics adjustor. The first digital filter includes a series of taps and generates a control signal. The control sound source produces an artificial noise in accordance with the control signal. The error sensor converts a synthesized sound of the artificial noise and a target noise at a canceling location to an error signal. The second digital filter includes N taps and generates a filtered reference signal. The characteristics adjustor uses the error signal and the filtered reference signal to adjust a coefficient of each tap of M taps in the series of taps. Each of M and N is a positive integer satisfying M<N.Type: ApplicationFiled: January 25, 2022Publication date: July 28, 2022Applicant: MAKITA CORPORATIONInventor: Hideaki TAKANO
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Publication number: 20220127298Abstract: This invention provides a novel compound having an antibacterial activity, and a method for producing the same. The compound is represented by Formula (I): or a salt or ester thereof.Type: ApplicationFiled: February 4, 2020Publication date: April 28, 2022Applicant: KENNAN EISEI KOGYO CO., LTD.Inventors: Hideaki TAKANO, Minato SATO, Shoichi AMANO, Hatsumi TAKANO, Kenji UEDA, Kazuo FURIHATA, Shohei SAKUDA, Akira YOROTA, Shuhei YABE
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Publication number: 20210121031Abstract: A dust extractor (1) includes a motor (30) and a blower fan (40), which is disposed downward of the motor and is connected to the motor. The dust extractor further includes a flexible (pliable) support member (50; 500), which has a lower-end portion (52) connected to the motor and suspends the motor.Type: ApplicationFiled: September 16, 2020Publication date: April 29, 2021Inventor: Hideaki TAKANO
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Publication number: 20200282353Abstract: A backpack dust collector includes a housing, a slit portion, and a noise-absorbing member. The housing includes a suction port, a dust collecting chamber, a motor chamber, and an exhaust port. The dust collecting chamber is connected to the suction port and configured to accommodate a dust collecting bag. The motor chamber is connected to the dust collecting chamber and accommodates a fan and a motor. Through the exhaust port, air from the motor chamber is discharged. The slit portion is disposed in a flow path between the motor chamber and the exhaust port and includes at least one slit-shaped vent through which air from the motor chamber passes. The noise-absorbing member is disposed in at least part of a flow path between the vent and the exhaust port.Type: ApplicationFiled: March 2, 2020Publication date: September 10, 2020Applicant: MAKITA CORPORATIONInventors: Hideaki TAKANO, Makoto HOTTA, Takayuki TAHARA
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Publication number: 20190226498Abstract: A blower machine may include a blower unit configured to blow air; and an air passage pipe connected to an air duct of the blower unit. The air passage pipe may include an elbow pipe arranged on a proximal end side of the air passage pipe which is connected to the air duct; and a straight pipe extending straight and arranged on a distal end side of the air passage pipe than the elbow pipe. A first silencer pipe portion may be arranged at a proximal end portion of the straight pipe which is arranged on the distal end side of the air passage pipe than the elbow pipe, and the first silencer pipe portion may be provided with a sound absorbing material on an inner surface of the first silencer pipe.Type: ApplicationFiled: January 22, 2019Publication date: July 25, 2019Applicant: MAKITA CORPORATIONInventor: Hideaki TAKANO
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Patent number: 9850915Abstract: A power tool having a built-in fan, the fan including a plurality of blades at uneven pitches. The fan includes a centrifugal fan which blows out air in all radial directions. The fan is provided with means for correcting unstable outflow which may be caused by the uneven pitches between the blades. The blades have unevenly configured inducers for correcting unstable outflow.Type: GrantFiled: June 19, 2012Date of Patent: December 26, 2017Assignee: MAKITA CORPORATIONInventor: Hideaki Takano
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Patent number: 9590451Abstract: An autonomous power supply system includes a generation control circuit which controls power generation efficiency of a power generation element, a group of storage elements for charging electric power generated by the power generation element, and a charging control circuit which controls a charging operation and a discharging operation of the storage element group. The storage element group includes a primary storage element for supplying electric power to the generation control circuit and the charging control circuit, and secondary storage elements for supplying electric power to a loading device. The electric power generated by the power generation element charges the primary storage element preferentially, and the secondary storage elements subsequent to the primary storage element. A capacity value of the primary storage element is set to be smaller than a capacity value of the secondary storage elements.Type: GrantFiled: July 3, 2014Date of Patent: March 7, 2017Assignee: Hitachi, Ltd.Inventors: Tsukasa Fujimori, Yasushi Goto, Hideaki Kurata, Hideaki Takano