Patents by Inventor Tsuyoshi Fukunaga
Tsuyoshi Fukunaga 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: 11525445Abstract: A compressor assembly becomes a compressor as a result of a terminal guard being attached. The compressor assembly includes a body, and a terminal guard mounting seat attached to an outer surface of the body. The terminal guard is attachable to the terminal guard mounting seat. A compressor includes the compressor assembly and the terminal guard. The compressor can be manufactured by attaching the terminal guard mounting seat to the outer surface, administering metal spraying to at least part of the outer surface after attaching the terminal guard mounting seat, and attaching the terminal guard to the terminal guard mounting seat after the administering metal spraying.Type: GrantFiled: July 25, 2017Date of Patent: December 13, 2022Assignee: Daikin Industries, Ltd.Inventors: Naoki Shimozono, Mikio Kajiwara, Tomomi Yokoyama, Kouji Kojima, Tsuyoshi Fukunaga, Mahoba Ogawa, Yasuhiro Yamamoto
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Patent number: 11421686Abstract: A compressor includes a casing, a compression mechanism, and a motor that drives the compression mechanism. The casing is configured to cover an internal space. The internal space includes a first space and a second space larger than the first space. The casing has a first casing part covering the first space and a second casing part covering the second space. At least one of the first space and the second space is a high-pressure space configured to contain high-pressure fluid. A metallic coating may be formed on an outer surface of at least the first casing part. Alternatively, a resin coating may be formed on an outer surface of the casing.Type: GrantFiled: July 26, 2017Date of Patent: August 23, 2022Assignee: Daikin Industries, Ltd.Inventors: Naoki Shimozono, Mikio Kajiwara, Tomomi Yokoyama, Kouji Kojima, Tsuyoshi Fukunaga, Mahoba Ogawa, Yasuhiro Yamamoto
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Publication number: 20210332818Abstract: A compressor includes a casing, a compression mechanism, and a motor that drives the compression mechanism. The casing is configured to cover an internal space. The internal space includes a first space and a second space larger than the first space. The casing has a first casing part covering the first space and a second casing part covering the second space. At least one of the first space and the second space is a high-pressure space configured to contain high-pressure fluid. A metallic coating may be formed on an outer surface of at least the first casing part. Alternatively, a resin coating may be formed on an outer surface of the casing.Type: ApplicationFiled: July 26, 2017Publication date: October 28, 2021Inventors: Naoki SHIMOZONO, Mikio KAJIWARA, Tomomi YOKOYAMA, Kouji KOJIMA, Tsuyoshi FUKUNAGA, Mahoba OGAWA, Yasuhiro YAMAMOTO
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Patent number: 11125231Abstract: A compressor includes a casing and a metallic coating. The casing includes a low-pressure casing part covering a low-pressure space and a high-pressure casing part covering a high-pressure space. The metallic coating is formed at least on a part of an outer surface of the casing. The metallic coating includes a low-pressure part coating formed in the low-pressure casing part, a high-pressure part coating formed in the high-pressure casing part, and a welded part coating formed in a welded part. At least either the average thickness of the low-pressure part coating or the average thickness of the welded part coating is greater than the average thickness of the high-pressure part coating.Type: GrantFiled: July 26, 2017Date of Patent: September 21, 2021Assignee: Daikin Industries, Ltd.Inventors: Naoki Shimozono, Mikio Kajiwara, Tomomi Yokoyama, Kouji Kojima, Tsuyoshi Fukunaga, Mahoba Ogawa, Yasuhiro Yamamoto
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Publication number: 20210285449Abstract: A compressor assembly becomes a compressor as a result of a terminal guard being attached. The compressor assembly includes a body, and a terminal guard mounting seat attached to an outer surface of the body. The terminal guard is attachable to the terminal guard mounting seat. A compressor includes the compressor assembly and the terminal guard. The compressor can be manufactured by attaching the terminal guard mounting seat to the outer surface, administering metal spraying to at least part of the outer surface after attaching the terminal guard mounting seat, and attaching the terminal guard to the terminal guard mounting seat after the administering metal spraying.Type: ApplicationFiled: July 25, 2017Publication date: September 16, 2021Inventors: Naoki SHIMOZONO, Mikio KAJIWARA, Tomomi YOKOYAMA, Kouji KOJIMA, Tsuyoshi FUKUNAGA, Mahoba OGAWA, Yasuhiro YAMAMOTO
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Publication number: 20190338774Abstract: A compressor includes a casing and a metallic coating. The casing includes a low-pressure casing part covering a low-pressure space and a high-pressure casing part covering a high-pressure space. The metallic coating is formed at least on a part of an outer surface of the casing. The metallic coating includes a low-pressure part coating formed in the low-pressure casing part, a high-pressure part coating formed in the high-pressure casing part, and a welded part coating formed in a welded part. At least either the average thickness of the low-pressure part coating or the average thickness of the welded part coating is greater than the average thickness of the high-pressure part coating.Type: ApplicationFiled: July 26, 2017Publication date: November 7, 2019Inventors: Naoki SHIMOZONO, Mikio KAJIWARA, Tomomi YOKOYAMA, Kouji KOJIMA, Tsuyoshi FUKUNAGA, Mahoba OGAWA, Yasuhiro YAMAMOTO
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Patent number: 9617996Abstract: A compressor includes a casing, a motor fixed to the casing, a vertically extending drive shaft coupled to the motor, and a compression mechanism driven by the drive shaft to compress a fluid. A shaft-inside oil supply path is provided in the drive shaft. Oil at a bottom of the casing is supplied through the shaft-inside oil supply path to a sliding portion of the drive shaft above the motor. The compressor includes a shaft-inside oil discharge path provided in the drive shaft, and an oil discharge coupled to a lower end of the drive shaft. The shaft-inside oil discharge path extends from an upper portion to a lower portion of the motor. The oil discharge pump discharges the oil that has been supplied to the sliding portion of the drive shaft to the bottom of the casing through the shaft-inside oil discharge path.Type: GrantFiled: February 8, 2013Date of Patent: April 11, 2017Assignee: Daikin Industries, Ltd.Inventors: Toshiyuki Toyama, Tsuyoshi Fukunaga
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Publication number: 20150030487Abstract: A compressor includes a casing, a motor fixed to the casing, a vertically extending drive shaft coupled to the motor, and a compression mechanism driven by the drive shaft to compress a fluid. A shaft-inside oil supply path is provided in the drive shaft. Oil at a bottom of the casing is supplied through the shaft-inside oil supply path to a sliding portion of the drive shaft above the motor. The compressor includes a shaft-inside oil discharge path provided in the drive shaft, and an oil discharge coupled to a lower end of the drive shaft. The shaft-inside oil discharge path extends from an upper portion to a lower portion of the motor. The oil discharge pump discharges the oil that has been supplied to the sliding portion of the drive shaft to the bottom of the casing through the shaft-inside oil discharge path.Type: ApplicationFiled: February 8, 2013Publication date: January 29, 2015Inventors: Toshiyuki Toyama, Tsuyoshi Fukunaga
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Patent number: 8439660Abstract: A screw compressor comprises a first meshing body and a second meshing body. The first meshing body has plural helical flutes disposed around a first rotating shaft. The second meshing body has plural projections or lobes disposed around a second rotating shaft. At least one of the projections or lobes is arranged non-uniformly with respect to the other projections or lobes in a circumferential direction of the second rotating shaft. The plural helical flutes are arranged to be meshable with the plural projections or lobes, in a circumferential direction of the first rotating shaft.Type: GrantFiled: August 11, 2008Date of Patent: May 14, 2013Assignee: Daikin Industries, Ltd.Inventors: Masanori Masuda, Mohammod Anwar Hossain, Tsuyoshi Fukunaga
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Publication number: 20120027634Abstract: A screw compressor comprises a first meshing body and a second meshing body. The first meshing body has plural helical flutes disposed around a first rotating shaft. The second meshing body has plural projections or lobes disposed around a second rotating shaft. At least one of the projections or lobes is arranged non-uniformly with respect to the other projections or lobes in a circumferential direction of the second rotating shaft. The plural helical flutes are arranged to be meshable with the plural projections or lobes, in a circumferential direction of the first rotating shaft.Type: ApplicationFiled: August 11, 2008Publication date: February 2, 2012Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Masanori Masuda, Mohammod Anwar Hossain, Tsuyoshi Fukunaga
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Patent number: 6077058Abstract: When a driving shaft rotates, a piston (9) revolves around the driving shaft in a cylinder room (6a) with supported by a swing bush (32) as a supporting point through a blade (31). Discharge ports (22) are formed in a front head (7) and a rear head (8) respectively and are disposed to be located in the proximity of the blade (31) and to communicate with a high pressure room. A semicircular portion of the discharge port (22) overlaps with the swing bush (32) and the cylinder (6). A pair of upper and lower cut parts (41) are each formed by cutting away an outer peripheral edge of the swing bush (32) and an inner peripheral edge of the cylinder (6) which are overlapped with the discharge port (22).Type: GrantFiled: December 31, 1997Date of Patent: June 20, 2000Assignee: Daikin Industries, Ltd.Inventors: Kenichi Saitou, Masanori Masuda, Hiromichi Ueno, Tsuyoshi Fukunaga, Katsumi Katou, Katsumi Kawahara, Takeyoshi Ookawa, Takashi Hirouchi
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Patent number: 5897299Abstract: An inlet pipe (7) and a discharge pipe (9) of a centrifugal compressor (1) are provided with respective solenoid valves (16, 17) for allowing a flow of fluid in a direction of flow under operation of fluid compression. One end of a bypass pipe (20) is connected to a part of the inlet pipe (7) located between the solenoid valve (16) and an impeller room (6). The other end of the bypass pipe (20) is connected to a part of the discharge pipe (9) located between the impeller room (6) and the solenoid valve (17). The bypass pipe (20) is provided with a solenoid valve (21) which closes under operation of fluid compression of the centrifugal compressor (1) while opening under deactivating operation of the centrifugal compressor (1).Type: GrantFiled: January 17, 1997Date of Patent: April 27, 1999Assignee: Daikin Industries, Ltd.Inventor: Tsuyoshi Fukunaga