Patents by Inventor Shigehiro Sato

Shigehiro Sato 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).

  • Publication number: 20190233944
    Abstract: A surface treatment apparatus includes a treatment vessel including a treatment space in which a metal component is disposed, a spray nozzle that supplies mist of a non-chromate conversion treatment liquid to the treatment space, and a circulation device that collects the non-chromate conversion treatment liquid from the treatment space and supplies the non-chromate conversion treatment liquid to the spray nozzle.
    Type: Application
    Filed: June 12, 2017
    Publication date: August 1, 2019
    Inventors: Hiroaki MIKAWA, Hiromitsu NAGAYASU, Shigehiro SUGIYAMA, Takumi SATO, Kohei KAWASAKI, Yusuke TAKAGI
  • Patent number: 10215451
    Abstract: A compressor uses a refrigerant containing R1123 (1,1,2-trifluoroethylene) as a working fluid, and uses a polyol ester oil as a compressor lubricating oil. In addition, a fixed scroll and a revolving scroll each having a spiral lap rising from an end plate, and a compression chamber which is formed by meshing the fixed scroll and the revolving scroll, are provided. In addition, a discharge hole which is provided at a center position of the end plate of the fixed scroll, and is open to a discharge chamber, a bypass hole which is provided in the end plate of the fixed scroll, and communicates with the compression chamber and the discharge chamber at a timing different from a timing at which the compression chamber communicates with the discharge hole, and a check valve which is provided in the bypass hole, and allows a flow from the compression chamber side to the discharge chamber side.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: February 26, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akira Fujitaka, Fuminori Sakima, Yoshikazu Kawabe, Atsushi Sakuda, Hiroaki Nakai, Shigehiro Sato, Kenji Takaichi
  • Patent number: 10151514
    Abstract: A compressor uses a refrigerant containing R1123 (1,1,2-trifluoroethylene) as a working fluid, and uses a polyol ester oil as a compressor lubricating oil. In addition, a fixed scroll and a revolving scroll each having a spiral lap rising from an end plate, and a compression chamber which is formed by meshing the fixed scroll and the revolving scroll, are provided. In addition, a discharge hole which is provided at a center position of the end plate of the fixed scroll, and is open to a discharge chamber, a bypass hole which is provided in the end plate of the fixed scroll, and communicates with the compression chamber and the discharge chamber at a timing different from a timing at which the compression chamber communicates with the discharge hole, and a check valve which is provided in the bypass hole, and allows a flow from the compression chamber side to the discharge chamber side.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: December 11, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akira Fujitaka, Fuminori Sakima, Yoshikazu Kawabe, Atsushi Sakuda, Hiroaki Nakai, Shigehiro Sato, Kenji Takaichi
  • Patent number: 10077922
    Abstract: A compressor uses a refrigerant containing R1123 (1,1,2-trifluoroethylene) as a working fluid, and uses a polyvinyl ether oil as a compressor lubricating oil. In addition, a fixed scroll (12) and a revolving scroll (13) each having a spiral lap rising from an end plate, and a compression chamber (15) which is formed by meshing the fixed scroll (12) and the revolving scroll (13), are provided. In addition, a discharge hole (18) which is provided at a center position of the end plate of the fixed scroll (12), and is open to a discharge chamber (31), a bypass hole (68) which is provided in the end plate of the fixed scroll (12), and communicates with the compression chamber (15) and the discharge chamber (31) at a timing different from a timing at which the compression chamber (15) communicates with the discharge hole (18), and a check valve which is provided in the bypass hole (68), and allows a flow from the compression chamber (15) side to the discharge chamber (31) side.
    Type: Grant
    Filed: April 27, 2015
    Date of Patent: September 18, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Akira Fujitaka, Fuminori Sakima, Yoshikazu Kawabe, Atsushi Sakuda, Hiroaki Nakai, Shigehiro Sato, Kenji Takaichi
  • Publication number: 20180156217
    Abstract: The present invention includes a refrigeration cycle circuit that includes compressor, indoor heat exchanger, expansion valve, and outdoor heat exchanger that are connected to each other. A working fluid containing R1123 (1,1,2-trifluoroethylene) and R32 (difluoromethane) is used as a refrigerant sealed in the refrigeration cycle circuit, and an electric motor driving device that drives an electric motor of compressor includes a rotational speed estimator. The rotational speed estimator estimates rotational speed based on information on a detection value of an electric current input to the electric motor or a magnetic pole position of a rotor that constitutes the electric motor.
    Type: Application
    Filed: June 7, 2016
    Publication date: June 7, 2018
    Inventors: FUMINORI SAKIMA, AKIRA FUJITAKA, HIROAKI NAKAI, AKIHIRO KYOGOKU, HIDEAKI MATSUO, SHIGEHIRO SATO, KENJI TAKAICHI
  • Publication number: 20170146265
    Abstract: A compressor uses a refrigerant containing R1123 (1,1,2-trifluoroethylene) as a working fluid, and uses a polyvinyl ether oil as a compressor lubricating oil. In addition, a fixed scroll and a revolving scroll each having a spiral lap rising from an end plate, and a compression chamber which is formed by meshing the fixed scroll and the revolving scroll, are provided. In addition, a discharge hole which is provided at a center position of the end plate of the fixed scroll, and is open to a discharge chamber, a bypass hole which is provided in the end plate of the fixed scroll, and communicates with the compression chamber and the discharge chamber at a timing different from a timing at which the compression chamber communicates with the discharge hole, and a check valve which is provided in the bypass hole, and allows a flow from the compression chamber side to the discharge chamber side.
    Type: Application
    Filed: April 27, 2015
    Publication date: May 25, 2017
    Inventors: Akira FUJITAKA, Fuminori SAKIMA, Yoshikazu KAWABE, Atsushi SAKUDA, Hiroaki NAKAI, Shigehiro SATO, Kenji TAKAICHI
  • Publication number: 20170138645
    Abstract: A refrigeration cycle device includes a refrigeration cycle formed by connecting a compressor, a condenser, an expansion valve and an evaporator to each other. As a refrigerant in the refrigeration cycle, a working fluid containing 1,1,2-trifluoroethylene (R1123) and difluoromethane (R32) is used. A degree of opening of the expansion valve is controlled such that the refrigerant has two phases at a suction portion of the compressor. With such a configuration, it is possible to provide highly reliable refrigeration cycle device by suppressing occurrence of a disproportionation reaction of R1123.
    Type: Application
    Filed: May 8, 2015
    Publication date: May 18, 2017
    Inventors: Fuminori SAKIMA, Akira FUJITAKA, Shigehiro SATO, Kenji TAKAICHI, Yoshikazu KAWABE, Hiroaki NAKAI
  • Publication number: 20170138641
    Abstract: A compressor uses a refrigerant containing R1123 (1,1,2-trifluoroethylene) as a working fluid, and uses a polyol ester oil as a compressor lubricating oil. In addition, a fixed scroll and a revolving scroll each having a spiral lap rising from an end plate, and a compression chamber which is formed by meshing the fixed scroll and the revolving scroll, are provided. In addition, a discharge hole which is provided at a center position of the end plate of the fixed scroll, and is open to a discharge chamber, a bypass hole which is provided in the end plate of the fixed scroll, and communicates with the compression chamber and the discharge chamber at a timing different from a timing at which the compression chamber communicates with the discharge hole, and a check valve which is provided in the bypass hole, and allows a flow from the compression chamber side to the discharge chamber side.
    Type: Application
    Filed: April 27, 2015
    Publication date: May 18, 2017
    Inventors: Akira FUJITAKA, Fuminori SAKIMA, Yoshikazu KAWABE, Atsushi SAKUDA, Hiroaki NAKAI, Shigehiro SATO, Kenji TAKAICHI
  • Patent number: 8992793
    Abstract: Use of a double bond-containing hydrofluoroolefin refrigerant causes a problem that it generates hydrogen fluoride by cleavage and decomposition under influence of oxygen, leading to degradation of the materials and the refrigeration oil used in the refrigeration apparatus and causing troubles in the refrigeration apparatus. It is possible to provide a high-reliability longer-lasting refrigeration apparatus by inexpensive method, by using a double bond-containing hydrofluoroolefin refrigerant in a refrigerating cycle having a refrigerant circulation route extending from a compressor 1, via a condenser 2, an expansion mechanism 3, and an evaporator 4, back to the compressor 1 that contains an ester-based refrigeration oil containing an unsaturated fatty acid as a constituent fatty acid.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: March 31, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shigehiro Sato, Kenji Takaichi
  • Publication number: 20130167580
    Abstract: In a compressor, a single refrigerant of hydrofluoroolefin having a double bond of carbon or a mixed refrigerant containing hydrofluoroolefin and hydrofluorocarbon having no double bond of carbon is used, and moreover a refrigerating machine oil containing an additive for suppressing deterioration of the refrigerating machine oil and an antiwear agent is used, the compressor including a sliding portion which is exposed to the mixed refrigerant and the refrigerating machine oil and which has a hardness of 47-55 HRC. Thus, decomposition and polymerization of the refrigerant and the refrigerating machine oil can be inhibited (i.e., occurrence of sludge can be inhibited), and antiwear property of sliding portions, e.g. vane and piston, of the compressor can be maintained. As a result, reliability of the compressor and the refrigerating cycle apparatus using the compressor can be ensured.
    Type: Application
    Filed: September 6, 2011
    Publication date: July 4, 2013
    Applicant: PANASONIC CORPORATION
    Inventors: Yoshinori Ishida, Noboru Iida, Shingo Oyagi, Shigehiro Sato
  • Publication number: 20120304687
    Abstract: Use of a double bond-containing hydrofluoroolefin refrigerant causes a problem that it generates hydrogen fluoride by cleavage and decomposition under influence of oxygen, leading to degradation of the materials and the refrigeration oil used in the refrigeration apparatus and causing troubles in the refrigeration apparatus. It is possible to provide a high-reliability longer-lasting refrigeration apparatus by inexpensive method, by using a double bond-containing hydrofluoroolefin refrigerant in a refrigerating cycle having a refrigerant circulation route extending from a compressor 1, via a condenser 2, an expansion mechanism 3, and an evaporator 4, back to the compressor 1 that contains an ester-based refrigeration oil containing an unsaturated fatty acid as a constituent fatty acid.
    Type: Application
    Filed: July 28, 2010
    Publication date: December 6, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Shigehiro Sato, Kenji Takaichi
  • Publication number: 20040112812
    Abstract: A scale removing operation of the heat exchange means or a regenerating operation of ion removing means is carried out using electrolytic water, thereby reducing the water processing amount. The present invention provides a water heater capable of preventing deterioration of performance caused by adhesion of scale, capable of preventing a trouble caused by clogging, and capable of increasing the lifetime. The water heater comprising a heat source, heat exchange means for heating supplied water, and electrolytic water generating means, wherein a removing operation of scale having salt as main ingredient deposited in a water pipe of the heat exchange means is carried out using produced water of the electrolytic water generating means.
    Type: Application
    Filed: December 8, 2003
    Publication date: June 17, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Yoshikazu Kawabe, Kazuo Nakatani, Yuji Inoue, Noriho Okaza, Shigehiro Sato
  • Patent number: 6487868
    Abstract: To provide an air conditioner having an antibacterial and mold-proofing member which can be easily incorporated and has high effectiveness and a method for controlling the air conditioner. An air conditioner of the present invention having a heat exchanger and a blower for supplying the heat exchanger with air comprises an antibacterial and mold-proofing member which includes an antibacterial and mold-proofing component which will volatile at an ambient temperature and diffuse in the air conditioner, and also has a control mechanism for gradually evaporating which controls the release rate of the antibacterial and mold-proofing component to the inside of the air conditioner so that it becomes large at high humidity and small at low humidity.
    Type: Grant
    Filed: February 8, 2001
    Date of Patent: December 3, 2002
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shigehiro Sato, Shiho Furuya, Masahiro Watanabe, Toshiyuki Imasaka, Eiji Nakatsuno
  • Publication number: 20010023593
    Abstract: To provide an air conditioner having an antibacterial and mold-proofing member which can be easily incorporated and has high effectiveness and a method for controlling the air conditioner. An air conditioner of the present invention having a heat exchanger and a blower for supplying the heat exchanger with air comprises an antibacterial and mold-proofing member which includes an antibacterial and mold-proofing component which will volatile at an ambient temperature and diffuse in the air conditioner, and also has a control mechanism for gradually evaporating which controls the release rate of the antibacterial and mold-proofing component to the inside of the air conditioner so that it becomes large at high humidity and small at low humidity.
    Type: Application
    Filed: February 8, 2001
    Publication date: September 27, 2001
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Shigehiro Sato, Shiho Furuya, Masahiro Watanabe, Toshiyuki Imasaka, Eiji Nakatsuno
  • Patent number: 6216476
    Abstract: In an apparatus having a refrigeration cycle, the refrigeration cycle is formed by annularly connecting a compressor, a condenser, an expansion device and an evaporator with one another, the apparatus uses propane, isobutane or ethane as a refrigerant, and uses refrigerating machine oil having less mutual solubility with the refrigerant, and a dryer is provided in the refrigeration cycle for absorbing water. In stead of the dryer, an additive which reacts with water may be included in said refrigerating machine oil. With this arrangement, the amount of the refrigerant can be reduced, and the long term reliability of the apparatus can be obtained.
    Type: Grant
    Filed: February 14, 2000
    Date of Patent: April 17, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hironao Numoto, Kanji Haneda, Akira Fujitaka, Shigehiro Sato, Yukio Watanabe, Yuichi Yakumaru, Yoshinori Kobayashi
  • Patent number: 6196008
    Abstract: A method for taking custody of, transporting and installing an air conditioner having an outdoor unit which uses a flammable refrigerant and includes a refrigeration cycle comprising a compressor, an expansion device and an outdoor heat exchanger which are connected to one another through pipes, wherein the outdoor unit is shipped from a factory while the refrigeration cycle is evacuated to produce a vacuum, the outdoor unit is kept in custody and transported in a state in which the vacuum in the refrigeration cycle is maintained, and when the outdoor unit is installed, the flammable refrigerant is charged into the refrigeration cycle.
    Type: Grant
    Filed: May 21, 1999
    Date of Patent: March 6, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Fujitaka, Yoshinori Kobayashi, Yuichi Yakumaru, Yukio Watanabe, Hironao Numoto, Shigehiro Sato, Kanji Haneda
  • Patent number: 6167719
    Abstract: In a compressor of a refrigeration cycle using an HC-based refrigerant and a lubricant having specific gravity greater than that of the HC-based refrigerant and having no or no or less mutual solubility with the HC-based refrigerant, an oil reservoir is formed on a bottom of the compressor, the oil reservoir is provided at its portion with a recess, a suction port of a lubricant suction pipe for supplying the lubricant to a compressor mechanism is provided in the recess. With this feature, it is possible to sufficiently supply the lubricant to the compressor even when the lubricant has no or less mutual solubility, so that even if the amount of the lubricant is reduced, the lubricant can be sufficiently sucked from an inlet port of a lubricant pumping pipe and supplied to the compressor mechanism.
    Type: Grant
    Filed: April 5, 1999
    Date of Patent: January 2, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yuichi Yakumaru, Yukio Watanabe, Akira Fujitaka, Hironao Numoto, Shigehiro Sato, Kanji Haneda, Yoshinori Kobayashi
  • Patent number: 6044660
    Abstract: In an apparatus having a refrigeration cycle, the refrigeration cycle is formed by annularly connecting a compressor, a condenser, an expansion device and an evaporator with one another, the apparatus uses propane, isobutane or ethane as a refrigerant, and uses refrigerating machine oil having less mutual solubility with the refrigerant, and a dryer is provided in the refrigeration cycle for absorbing water. In stead of the dryer, an additive which reacts with water may be included in said refrigerating machine oil. With this arrangement, the amount of the refrigerant can be reduced, and the long term reliability of the apparatus can be obtained.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: April 4, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hironao Numoto, Kanji Haneda, Akira Fujitaka, Shigehiro Sato, Yukio Watanabe, Yuichi Yakumaru, Yoshinori Kobayashi
  • Patent number: 5876891
    Abstract: An alternating copolymer comprising a repeating unit of the formula:--Z--(X--Y).sub.n-- (I)wherein n is at least 2, X is O, S, Se or Te, and Y and Z are independently an aromatic or substituted aromatic group, and at least one other repeating unit, which is useful as a photosensitive material used in a spatial light modulator.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: March 2, 1999
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Akio Takimoto, Hirofumi Wakemoto, Eiichiro Tanaka, Masanori Watanabe, Junko Asayama, Hisahito Ogawa, Shigehiro Sato, Fumiko Yokotani
  • Patent number: 5842349
    Abstract: A refrigeration system includes an outdoor unit having a refrigeration compressor and a heat exchanger, and an indoor unit having a heat exchanger to be placed where air conditioning is desired. In installing the refrigeration system, the outdoor unit is first connected with the indoor unit via pipe lines, and an air absorbing device containing zeolite as an adsorbent is subsequently placed on the outdoor unit, the indoor unit, or the pipe lines to remove air. The air absorbing device is then separated from the refrigeration system, and refrigerant is caused to circulate through the refrigeration system.
    Type: Grant
    Filed: November 18, 1997
    Date of Patent: December 1, 1998
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Katsuya Wakita, Tetsuji Kawakami, Keizo Nakajima, Shigehiro Sato, Yusuke Ozaki, Nobuo Sonoda