Patents by Inventor Fumikazu NAGAOKA
Fumikazu NAGAOKA 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: 12018742Abstract: The sensor arrangement structure includes a pulley that rotates about a rotation axis; and a sensor that detects rotation of the pulley. The pulley includes a fixed pulley, a movable pulley that can be displaced relative to the fixed pulley in a direction of the rotation axis, and a plunger defining an oil chamber on a back of the movable pulley. The plunger is provided with a detection target portion in a region that can be visually recognized from the direction of the rotation axis, and the sensor is provided on a support portion that rotatably supports the fixed pulley in a direction along the rotation axis and faces the region in which the detection target portion is provided.Type: GrantFiled: January 18, 2022Date of Patent: June 25, 2024Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Yusuke Nakano, Fumikazu Nagaoka, Hui Jin
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Publication number: 20240110624Abstract: A hydraulic actuation device includes a case; an oil passage provided in the case; and a support member provided in the case and configured to support a supported member. The oil passage includes an opening portion that allows the oil passage to communicate with a space inside the case, the support member is inserted into the opening portion, and a communication between the oil passage and the space inside the case is blocked by the support member.Type: ApplicationFiled: January 18, 2022Publication date: April 4, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Yusuke NAKANO, Fumikazu NAGAOKA, Hui JIN
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Publication number: 20240060556Abstract: The sensor arrangement structure includes a pulley that rotates about a rotation axis; and a sensor that detects rotation of the pulley. The pulley includes a fixed pulley, a movable pulley that can be displaced relative to the fixed pulley in a direction of the rotation axis, and a plunger defining an oil chamber on a back of the movable pulley. The plunger is provided with a detection target portion in a region that can be visually recognized from the direction of the rotation axis, and the sensor is provided on a support portion that rotatably supports the fixed pulley in a direction along the rotation axis and faces the region in which the detection target portion is provided.Type: ApplicationFiled: January 18, 2022Publication date: February 22, 2024Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Yusuke NAKANO, Fumikazu NAGAOKA, Hui JIN
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Patent number: 10458407Abstract: A scroll compressor includes a first chamfered portion formed at a distal end portion of a spiral blade of a fixed scroll, a second chamfered portion formed at a distal end portion of a spiral blade of an orbiting scroll, a third chamfered portion formed at a bottom portion of the spiral blade of the fixed scroll, and a fourth chamfered portion formed at a bottom portion of the spiral blade of the orbiting scroll. An expression of 0<{(Av1+Av2)/2}/Ac<1×10?4 is satisfied where a sectional area of a space between the first chamfered portion and the fourth chamfered portion is defined as Av1, a sectional area of a space between the second chamfered portion and the third chamfered portion is defined as Av2, and a sectional area of a compression chamber is defined as Ac.Type: GrantFiled: April 16, 2015Date of Patent: October 29, 2019Assignee: Mitsubishi Electric CorporationInventors: Fumikazu Nagaoka, Masashi Myogahara, Keisuke Narumi, Yosuke Tsuruoka
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Patent number: 9976556Abstract: A scroll compressor includes a sealed container, a compression mechanism portion for a refrigerant, a compliant frame and a guide frame which support an orbiting scroll, an electric motor which drives the orbiting scroll, balance weights, a refrigerant flow path which introduces a refrigerant gas discharged through a discharge port of a fixed scroll to a bottom portion of the sealed container, cup-shaped members provided on both upper and lower surfaces of the rotor of the electric motor and contain the balance weights, a penetrating flow path through which the refrigerant gas containing a refrigerating machine oil flows from a lower side of the rotor of the electric motor through the interiors of the cup-shaped members to an upper side of the rotor, and a discharge cover which is provided at a lower portion of the frame, and which introduces the refrigerant gas to a discharge pipe.Type: GrantFiled: October 3, 2013Date of Patent: May 22, 2018Assignee: Mitsubishi Electric CorporationInventors: Fumikazu Nagaoka, Teruhiko Nishiki, Hiroyasu Takahashi, Keisuke Narumi
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Publication number: 20180017055Abstract: A scroll compressor includes a first chamfered portion formed at a distal end potion of a spiral blade of a fixed scroll, a second chamfered portion formed at a distal end portion of a spiral blade of an orbiting scroll, a third chamfered portion formed at a bottom portion of the spiral blade of the fixed scroll, and a fourth chamfered portion formed at a bottom portion of the spiral blade of the orbiting scroll. An expression of 0<{(Av1+Av2)/2}/Ac<1×10?4 is satisfied where a sectional area of a space between the first chamfered portion and the fourth chamfered portion is defined as Av1, a sectional area of a space between the second chamfered portion and the third chamfered portion is defined as Av2, and a sectional area of a compression chamber is defined as Ac.Type: ApplicationFiled: April 16, 2015Publication date: January 18, 2018Inventors: Fumikazu NAGAOKA, Masashi MYOGAHARA, Keisuke NARUMI, Yosuke TSURUOKA
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Publication number: 20150285249Abstract: A scroll compressor includes a sealed container, a compression mechanism portion for a refrigerant, a compliant frame and a guide frame which support an orbiting scroll, an electric motor which drives the orbiting scroll, balance weights, a refrigerant flow path which introduces a refrigerant gas discharged through a discharge port of a fixed scroll to a bottom portion of the sealed container, cup-shaped members provided on both upper and lower surfaces of the rotor of the electric motor and contain the balance weights, a penetrating flow path through which the refrigerant gas containing a refrigerating machine oil flows from a lower side of the rotor of the electric motor through the interiors of the cup-shaped members to an upper side of the rotor, and a discharge cover which is provided at a lower portion of the frame, and which introduces the refrigerant gas to a discharge pipe.Type: ApplicationFiled: October 3, 2013Publication date: October 8, 2015Inventors: Fumikazu Nagaoka, Teruhiko Nishiki, Hiroyasu Takahashi, Keisuke Narumi
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Publication number: 20150152864Abstract: A scroll compressor includes a hermetic container in which a refrigeration machine oil is stored in a bottom area, a compression mechanism that compresses a refrigerant which is suctioned into the hermetic container, an electric motor which has a motor rotor and a motor stator and is configured to drive the compression mechanism which is connected thereto via a shaft, a sub-frame that is fixed to the hermetic container and supports the shaft in a rotatable manner from a lower side of the electric motor, a balance weight that is disposed on a lower end face of the motor rotor, and a fixed cup that is disposed on an upper end of the sub-frame and surrounds the balance weight.Type: ApplicationFiled: October 29, 2014Publication date: June 4, 2015Inventors: Fumikazu NAGAOKA, Masashi MYOGAHARA, Rei MISAKA, Ken NAMIKI