Patents by Inventor Takashi Sebata
Takashi Sebata 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: 6769887Abstract: On the assumption that pressure Pm1 (MPa) of a boss portion outside space determined by a restrictor and a flow regulating valve provided midway in an oil feed passageway is expressed by Pm1=Ps+&agr;, and a differential pressure value at which a difference between high and low pressures becomes minimum in a running pressure range of a scroll compressor is represented by min(Pd−Ps), the value a in the above expression is set to fall in a range expressed by 0<&agr;<min(Pd−Ps). Here, Ps represents suction pressure (MPa) of the compressor, and Pd represents discharge pressure (MPa) of the compressor.Type: GrantFiled: September 30, 2002Date of Patent: August 3, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kiyoharu Ikeda, Yoshihide Ogawa, Takeshi Fushiki, Teruhiko Nishiki, Takashi Sebata, Fumiaki Sano, Shin Sekiya
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Patent number: 6746215Abstract: A compressor includes a compression mechanism part for compressing refrigerant sucked from an outside of the hermetic container and discharging compressed refrigerant to a discharge space, an electric motor part composed of a stator and a rotor, facing a first space which is at an opposite side of the discharge space with respect to the compression mechanism part in the hermetic container, for driving the compression mechanism part through a main shaft, a passage at an external circumferential side of the compression mechanism part, for connecting the discharge space with the first space, and a fan provided at an end of the rotor, facing the first space. The refrigerant discharged into the discharge space passes through the passage at the external circumferential side of the compression mechanism part to reach the first space, and passes the fan to be discharged to the outside of the hermetic container.Type: GrantFiled: June 26, 2002Date of Patent: June 8, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Masao Tani, Fumiaki Sano, Kiyoharu Ikeda, Minoru Ishii, Takeshi Fushiki, Yoshihide Ogawa, Teruhiko Nishiki, Takashi Sebata, Shin Sekiya
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Patent number: 6679690Abstract: A scroll compressor including a guide frame (22) for fixing a fixed scroll member (12) and a compliant frame (24) for supporting an oscillating scroll member (14) in the axial direction of the scroll compressor in the guide frame (22), wherein the guide frame (22) has a plurality of cylindrical surfaces (33, 35), and the compliant frame (24) has a plurality of cylindrical surfaces (23, 25) which engage with the cylindrical surfaces (33, 35), and wherein in order to facilitate assembling of the guide frame (22) and the compliant frame (24), the first cylindrical surfaces (25, 35) are first engaged with each other when the compliant frame (24) is inserted into the guide frame (22), that is, the cylindrical surfaces are engaged in the order of increase in diameter.Type: GrantFiled: September 4, 2002Date of Patent: January 20, 2004Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takeshi Fushiki, Kiyoharu Ikeda, Teruhiko Nishiki, Yoshihide Ogawa, Takashi Sebata, Fumiaki Sano
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Patent number: 6648618Abstract: A structure is provided that prevents excessive force from acting on a fastening portion where a guide frame is fastened to a sealed container. A fastening position of the guide frame and sealed structure is set within a range bounded by an upper meshing circumferential inner surface of the guide frame together with an upper meshing circumferential outer surface of a compliant frame and a lower meshing circumferential inner surface of the guide frame together with a lower meshing circumferential outer surface of the compliant frame.Type: GrantFiled: January 28, 2002Date of Patent: November 18, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Teruhiko Nishiki, Takeshi Fushiki, Kiyoharu Ikeda, Yoshihide Ogawa, Takashi Sebata, Fumiaki Sano
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Patent number: 6582210Abstract: According to a scroll compressor of the present invention, at least one of a diameter space between an upper fitting surface of the guide frame and an upper fitting surface of the compliant frame at an upper fitting part where the upper fitting surface of the guide frame contacts with the upper fitting surface of the compliant frame, and a diameter space between a lower fitting surface of the guide frame and a lower fitting surface of the compliant frame at a lower fitting part where the lower fitting surface of the guide frame contacts with the lower fitting surface of the compliant frame is set to be equal to or shorter than a diameter space between the rotor and the stator.Type: GrantFiled: June 26, 2002Date of Patent: June 24, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Fumiaki Sano, Shin Sekiya, Kiyoharu Ikeda, Takeshi Fushiki, Yoshihide Ogawa, Teruhiko Nishiki, Takashi Sebata, Masao Tani
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Publication number: 20030091446Abstract: A refrigerant compressor improved in pressure-resistant strength of a closed vessel. In a prior-art refrigerant compressor, a three-phase integral type sealed terminal in which three pins connected to a three-phase power source are disposed on one metal base portion, is attached to a body portion of a closed vessel for supplying electric power to an electric motor. When a high hydrostatic pressure load is applied to the closed vessel, the closed vessel is deformed into a barrel shape, and the sealed terminal pulled in the circumferential direction due to the deformation of the closed vessel is deformed elliptically. There may arise a problem with a glass material for insulating the metal base portion from the pins.Type: ApplicationFiled: April 9, 2002Publication date: May 15, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Kiyoharu Ikeda, Fumiaki Sano, Takeshi Fushiki, Yoshihide Ogawa, Teruhiko Nishiki, Takashi Sebata, Shin Sekiya
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Publication number: 20030086798Abstract: A compressor includes a compression mechanism part for compressing refrigerant sucked from an outside of the hermetic container and discharging compressed refrigerant to a discharge space, an electric motor part composed of a stator and a rotor, facing a first space which is at an opposite side of the discharge space with respect to the compression mechanism part in the hermetic container, for driving the compression mechanism part through a main shaft, a passage at an external circumferential side of the compression mechanism part, for connecting the discharge space with the first space, and a fan provided at an end of the rotor, facing the first space. The refrigerant discharged into the discharge space passes through the passage at the external circumferential side of the compression mechanism part to reach the first space, and passes the fan to be discharged to the outside of the hermetic container.Type: ApplicationFiled: June 26, 2002Publication date: May 8, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISAInventors: Masao Tani, Fumiaki Sano, Kiyoharu Ikeda, Minoru Ishii, Takeshi Fushiki, Yoshihide Ogawa, Teruhiko Nishiki, Takashi Sebata, Shin Sekiya
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Publication number: 20030082064Abstract: According to a scroll compressor of the present invention, at least one of a diameter space between an upper fitting surface of the guide frame and an upper fitting surface of the compliant frame at an upper fitting part where the upper fitting surface of the guide frame contacts with the upper fitting surface of the compliant frame, and a diameter space between a lower fitting surface of the guide frame and a lower fitting surface of the compliant frame at a lower fitting part where the lower fitting surface of the guide frame contacts with the lower fitting surface of the compliant frame is set to be equal to or shorter than a diameter space between the rotor and the stator.Type: ApplicationFiled: June 26, 2002Publication date: May 1, 2003Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Fumiaki Sano, Shin Sekiya, Kiyoharu Ikeda, Takeshi Fushiki, Yoshihide Ogawa, Teruhiko Nishiki, Takashi Sebata, Masao Tani
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Publication number: 20030077194Abstract: On the assumption that pressure Pm1 (MPa) of a boss portion outside space determined by a restrictor and a flow regulating valve provided midway in an oil feed passageway is expressed by Pm1=Ps+&agr;, and a differential pressure value at which a difference between high and low pressures becomes minimum in a running pressure range of a scroll compressor is represented by min(Pd−Ps), the value a in the above expression is set to fall in a range expressed by 0<&agr;<min(Pd−Ps). Here, Ps represents suction pressure (MPa) of the compressor, and Pd represents discharge pressure (MPa) of the compressor.Type: ApplicationFiled: September 30, 2002Publication date: April 24, 2003Inventors: Kiyoharu Ikeda, Yoshihide Ogawa, Takeshi Fushiki, Teruhiko Nishiki, Takashi Sebata, Fumiaki Sano, Shin Sekiya
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Publication number: 20030031576Abstract: A scroll compressor including a guide frame (22) for fixing a fixed scroll member (12) and a compliant frame (24) for supporting an oscillating scroll member (14) in the axial direction of the scroll compressor in the guide frame (22), wherein the guide frame (22) has a plurality of cylindrical surfaces (33, 35), and the compliant frame (24) has a plurality of cylindrical surfaces (23, 25) which engage with the cylindrical surfaces (33, 35), and wherein in order to facilitate assembling of the guide frame (22) and the compliant frame (24), the first cylindrical surfaces (25, 35) are first engaged with each other when the compliant frame (24) is inserted into the guide frame (22), that is, the cylindrical surfaces are engaged in the order of increase in diameter.Type: ApplicationFiled: September 4, 2002Publication date: February 13, 2003Inventors: Takeshi Fushiki, Kiyoharu Ikeda, Teruhiko Nishiki, Yoshihide Ogawa, Takashi Sebata, Fumiaki Sano
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Publication number: 20020102175Abstract: A structure is provided that prevents excessive force from acting on a fastening portion where a guide frame is fastened to a sealed container. A fastening position of the guide frame and sealed structure is set within a range bounded by an upper meshing circumferential inner surface of the guide frame together with an upper meshing circumferential outer surface of a compliant frame and a lower meshing circumferential inner surface of the guide frame together with a lower meshing circumferential outer surface of the compliant frame.Type: ApplicationFiled: January 28, 2002Publication date: August 1, 2002Applicant: MITSUBISHI DENKI KABUSHIKI KAISHAInventors: Teruhiko Nishiki, Takeshi Fushiki, Kiyoharu Ikeda, Yoshihide Ogawa, Takashi Sebata, Fumiaki Sano
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Patent number: 6135739Abstract: A scroll compressor comprising a fixed scroll, a rotating scroll, a compliant frame for supporting the rotating scroll in an axial direction and a main shaft for driving the rotating scroll in directions of radiuses of the rotating scroll, and a guide frame fixed to a hermetically sealed vessel for supporting the compliant frame in the directions of its radiuses, wherein the rotating scroll is slidable in the axial direction by sliding of the compliant frame on the guide frame; a space is formed between the compliant frame and the guide frame; and a pressure in the space is made to be a pressure higher than a suction pressure and the same as a discharge pressure or less, whereby relief of the rotating scroll is avoidable to quickly and constantly realize a state of normal operation.Type: GrantFiled: March 16, 1999Date of Patent: October 24, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Hiroshi Ogawa, Minoru Ishii, Kiyoharu Ikeda, Yasuhiro Suzuki, Takeshi Fushiki, Takashi Sebata, Susumu Kawaguchi, Yoshihide Ogawa, Wataru Izumisawa