Patents by Inventor Hideaki Nishida

Hideaki Nishida 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).

  • Patent number: 8205973
    Abstract: An ink jet recording apparatus according to an embodiment of the invention includes an ink jet head having a pressure chamber facing a nozzle, and an upstream port and a downstream port connected to the pressure chamber, a main tank connected to the ink jet head via the upstream port and capable of storing ink therein, and a sub-tank connected to the ink jet head via the downstream port and capable of storing ink, wherein at least when printing by ejecting ink from the nozzle, the relation between ph, r, R and Q is held to satisfy ph?{QR×(1/(1+r))}=Pn (Pn being a constant representing a proper pressure in the nozzle), where ph represents a potential pressure in the main tank as viewed from a surface of an orifice plate where the nozzle of the ink jet head is formed, R represents a total flow path resistance from the main tank to the sub-tank via the ink jet head, a ratio of a flow path resistance from the main tank to the nozzle and a flow path resistance from the nozzle to the sub-tank is expressed by 1:r, a
    Type: Grant
    Filed: October 16, 2009
    Date of Patent: June 26, 2012
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Noboru Nitta, Masashi Shimosato, Hideaki Nishida, Isao Suzuki
  • Publication number: 20120157256
    Abstract: In a bearing oil supply structure for a wind turbine generator provided with a planetary-type planet gear box having a planet gear that rotates about a planet pin fixed to a carrier with a slide bearing interposed therebetween, lubrication of the slide bearing is achieved by supplying lubricant oil by using an oil bath in a lower rotation region and by supplying lubricant oil by injecting lubricant oil pressure-fed from a lubricant oil source through a nozzle in an upper rotation region.
    Type: Application
    Filed: December 16, 2011
    Publication date: June 21, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroaki TAKEUCHI, Hideaki NISHIDA, Yoshimi KAGIMOTO, Akihiko MATSUI, Noriyuki HAYASHI, Yasuyoshi TOZAKI
  • Publication number: 20120147088
    Abstract: According to one embodiment, an inkjet device includes: an inkjet head; an armor section configured to surround the periphery of the inkjet head; a first gap formed over the entire periphery in the peripheral direction in a plurality of the armor sections; and a seal body for forming a surface tension seal by fluid in a second gap arranged in the first gap to form a gap narrower than the first gap.
    Type: Application
    Filed: September 14, 2011
    Publication date: June 14, 2012
    Applicant: Toshiba Tec Kabushiki Kaisha
    Inventor: Hideaki NISHIDA
  • Publication number: 20120051915
    Abstract: A planetary gear train is provided with a planetary gear and a planetary pin inserted into the planetary gear. The planetary gear includes: a gear member having teeth on the outer face and a through hole; an intermediate housing inserted into the through hole and having an insert hole into which the planetary pin is inserted; and a plurality of sliding bearing members jointed onto the insert hole of the intermediate housing. The plurality of sliding bearing members form a sliding bearing which sustains the planetary pin and the planetary gear to be rotatable with each other.
    Type: Application
    Filed: February 10, 2011
    Publication date: March 1, 2012
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Kazutaka suzuki, Kazufumi TAKAYANAGI, Takafumi YOSHIDA, Hideaki NISHIDA, Motohisa UESATO, Masahiro KUSAKA
  • Patent number: 8113636
    Abstract: An inkjet head includes a nozzle to discharge liquid droplets, a pressure chamber which is configured to communicate with the nozzle and filled with liquid, a supply section which is configured to communicate with the pressure chamber and supplies the liquid to the pressure chamber, a recovery section which is configured to communicate with the pressure chamber and recovers the liquid from the pressure chamber, a bypass channel which is independent of the pressure chamber and connects the supply section with the recovery section, a pressure-control liquid chamber which is connected at one end to the bypass channel and connected at the other end to the atmosphere, and a porous member which is contained inside the pressure-control liquid chamber.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: February 14, 2012
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Hideaki Nishida, Noboru Nitta, Isao Suzuki, Masashi Shimosato
  • Patent number: 8109613
    Abstract: An ink supplying mechanism includes a circulating system that connects an ink jet head having a nozzle, a pressure chamber opposed to the nozzle, and an upstream port and a downstream port that communicate with the pressure chamber, an upstream side tank that communicates with the ink jet head via the upstream port and is capable of storing an ink, a downstream side tank that communicates with the ink jet head via the downstream port and is capable of storing the ink, and a circulating pump that feeds the ink from the downstream side tank back to the upstream side tank. The ink supplying mechanism has a relief valve that is capable of opening and closing at least a liquid surface of the downstream side tank with respect to the atmospheric pressure, closes the relief valve to drive the circulating pump, sets the liquid surface of the downstream side tank to a negative pressure, and feeds the ink from the downstream side tank back to the upstream side tank via a feedback channel to circulate the ink.
    Type: Grant
    Filed: November 23, 2010
    Date of Patent: February 7, 2012
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Noboru Nitta, Masashi Shimosato, Hideaki Nishida, Isao Suzuki
  • Publication number: 20110254281
    Abstract: Size enlargement of a wind turbine generator is facilitated by eliminating various problems that occur with a bearing that joins a tower (2) and a nacelle. In a wind turbine generator that turnably supports a nacelle installed at the top portion of a tower (2) via a yawing sliding bearing (30), a sliding bearing member (33) of the yawing sliding bearing (30) is provided on at least one of an inner circumferential surface side and an outer circumferential side of the tower (2), and the side-surface length (H) of the sliding bearing member (33) is set to be at least twice the horizontal-direction length (L) of the sliding bearing member.
    Type: Application
    Filed: June 16, 2009
    Publication date: October 20, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoshitomo Noda, Tomohiro Numajiri, Akihiko Yano, Hideaki Nishida, Takafumi Yoshida
  • Publication number: 20110172048
    Abstract: A planetary bearing structure which does not require forcible oil supply of planetary bearing using slide bearing, and which can reliably supply oil to a sliding surface and lubricate the sliding surface with a simple structure.
    Type: Application
    Filed: August 20, 2010
    Publication date: July 14, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideaki Nishida, Shuichi Isayama
  • Publication number: 20110140448
    Abstract: A wind-turbine-generator-system transmission and a wind turbine generator that can ensure the strength of a bearing and can also minimize seizing and abrasion are provided. In a wind-turbine-generator-system transmission having a sun gear, a planetary gear that meshes with the sun gear and rotates around the sun gear, and an inner tooth that meshes with the planetary gear, the transmission includes a carrier that rotates the planetary gear around the sun gear; a planetary pin that is disposed in the carrier and transmits rotation of the carrier to the planetary gear; a cylindrical sleeve disposed around a periphery of the planetary pin; and a slide bearing that is disposed between the sleeve and the planetary gear and supports the planetary gear in a rotatable manner about the planetary pin.
    Type: Application
    Filed: December 1, 2010
    Publication date: June 16, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroaki TAKEUCHI, Hideaki NISHIDA, Katsuhiko SHODA, Atsushi YUGE
  • Publication number: 20110092330
    Abstract: In a planetary bearing structure equipped with a slide bearing mounted to a shaft hole of a planetary gear, the planetary gear rotating about the outer periphery of a planetary pin fixed to a carrier via the slide bearing, one or a plurality of oil supply grooves are formed in the outer peripheral surface of the planetary pin so as to extend in the axial direction. An oil supply port of a lubricant oil channel opens in the oil supply groove so as to forcedly supply lubricant oil. Furthermore, a discharge groove for trapping foreign matter, which is shallower than the oil supply groove, communicates from the oil supply groove to the wake flow side in the rotating direction of the planetary gear.
    Type: Application
    Filed: October 15, 2010
    Publication date: April 21, 2011
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hideaki NISHIDA, Shuichi ISAYAMA
  • Publication number: 20110063381
    Abstract: An ink supplying mechanism includes a circulating system that connects an ink jet head having a nozzle, a pressure chamber opposed to the nozzle, and an upstream port and a downstream port that communicate with the pressure chamber, an upstream side tank that communicates with the ink jet head via the upstream port and is capable of storing an ink, a downstream side tank that communicates with the ink jet head via the downstream port and is capable of storing the ink, and a circulating pump that feeds the ink from the downstream side tank back to the upstream side tank. The ink supplying mechanism has a relief valve that is capable of opening and closing at least a liquid surface of the downstream side tank with respect to the atmospheric pressure, closes the relief valve to drive the circulating pump, sets the liquid surface of the downstream side tank to a negative pressure, and feeds the ink from the downstream side tank back to the upstream side tank via a feedback channel to circulate the ink.
    Type: Application
    Filed: November 23, 2010
    Publication date: March 17, 2011
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Noboru Nitta, Masashi Shimosato, Hideaki Nishida, Isao Suzuki
  • Patent number: 7857423
    Abstract: An ink-jet head includes a nozzle array including plural nozzles. The nozzle array has a first nozzle group arranged in the center thereof and second nozzle groups arranged further on outer sides than the first nozzle group. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group. A direction in which nozzles of the second nozzle group eject an ink and a direction in which nozzles of the first nozzle group eject the ink are different.
    Type: Grant
    Filed: September 10, 2008
    Date of Patent: December 28, 2010
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Isao Suzuki, Yoshiro Eto, Masashi Shimosato, Takahisa Ikeda, Megumi Shimizu, Minoru Koyata, Hideaki Nishida, Takashi Kukuchi
  • Patent number: 7850290
    Abstract: An ink jet recording apparatus includes an ink jet head having a pressure chamber opposed to a nozzle, an upstream port that communicates with the pressure chamber, and a downstream port, a first tank that communicates with the ink jet head via the downstream port and is capable of storing an ink, a second tank that communicates with the first tank and is capable of storing the ink, a third tank that communicates with the ink jet head via the upstream port and communicates with the second tank and is capable of storing the ink, an opening and closing mechanism that is capable of opening and closing a circulation path that connects the ink jet head, the first tank, the second tank, and the third tank, and an air pressure adjusting mechanism that is capable of adjusting an internal air pressure in at least one of the first tank, the second tank, and the third tank.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: December 14, 2010
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Noboru Nitta, Masashi Shimosato, Hideaki Nishida, Isao Suzuki
  • Patent number: 7845784
    Abstract: An ink supplying mechanism includes a circulating system that connects an ink jet head having a nozzle, a pressure chamber opposed to the nozzle, and an upstream port and a downstream port that communicate with the pressure chamber, an upstream side tank that communicates with the ink jet head via the upstream port and is capable of storing an ink, a downstream side tank that communicates with the ink jet head via the downstream port and is capable of storing the ink, and a circulating pump that feeds the ink from the downstream side tank back to the upstream side tank. The ink supplying mechanism has a relief valve that is capable of opening and closing at least a liquid surface of the downstream side tank with respect to the atmospheric pressure, closes the relief valve to drive the circulating pump, sets the liquid surface of the downstream side tank to a negative pressure, and feeds the ink from the downstream side tank back to the upstream side tank via a feedback channel to circulate the ink.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: December 7, 2010
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki Kaisha
    Inventors: Noboru Nitta, Masashi Shimosato, Hideaki Nishida, Isao Suzuki
  • Publication number: 20100134539
    Abstract: An ink jet recording apparatus according to an embodiment of the invention includes an ink jet head having a pressure chamber facing a nozzle, and an upstream port and a downstream port connected to the pressure chamber, a main tank connected to the ink jet head via the upstream port and capable of storing ink therein, and a sub-tank connected to the ink jet head via the downstream port and capable of storing ink, wherein at least when printing by ejecting ink from the nozzle, the relation between ph, r, R and Q is held to satisfy ph?{QR×(1/(1+r))}=Pn (Pn being a constant representing a proper pressure in the nozzle), where ph represents a potential pressure in the main tank as viewed from a surface of an orifice plate where the nozzle of the ink jet head is formed, R represents a total flow path resistance from the main tank to the sub-tank via the ink jet head, a ratio of a flow path resistance from the main tank to the nozzle and a flow path resistance from the nozzle to the sub-tank is expressed by 1:r, a
    Type: Application
    Filed: October 16, 2009
    Publication date: June 3, 2010
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Noboru Nitta, Masashi Shimosato, Hideaki Nishida, Isao Suzuki
  • Patent number: 7597434
    Abstract: “Energy per unit volume” P2(Pa) generated in ink 4 in a second ink tank 14 is maintained to the condition “P2={(1+r)×Pn}?(r×P1)” based on “energy per unit volume” P1(Pa) generated in ink 4 in the first ink tank 12, a proportion of “1:r” between channel resistance R1 (Pa·sec/m3) of ink from the first ink tank 12 to the neighborhood of a nozzle 1 and channel resistance R2 (Pa·sec/m3) of ink from the neighborhood of the nozzle 1 to the second ink tank 14, and appropriate pressure Pn (Pa) of the ink 4 in the neighborhood of the nozzle 1.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: October 6, 2009
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Noboru Nitta, Masashi Shimosato, Hideaki Nishida, Isao Suzuki
  • Publication number: 20090015640
    Abstract: An inkjet head includes a nozzle to discharge liquid droplets, a pressure chamber which is configured to communicate with the nozzle and filled with liquid, a supply section which is configured to communicate with the pressure chamber and supplies the liquid to the pressure chamber, a recovery section which is configured to communicate with the pressure chamber and recovers the liquid from the pressure chamber, a bypass channel which is independent of the pressure chamber and connects the supply section with the recovery section, a pressure-control liquid chamber which is connected at one end to the bypass channel and connected at the other end to the atmosphere, and a porous member which is contained inside the pressure-control liquid chamber.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 15, 2009
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Hideaki Nishida, Noboru Nitta, Isao Suzuki, Masashi Shimosato
  • Publication number: 20090002441
    Abstract: An ink-jet head includes a nozzle array including plural nozzles. The nozzle array has a first nozzle group arranged in the center thereof and second nozzle groups arranged further on outer sides than the first nozzle group. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group. A direction in which nozzles of the second nozzle group eject an ink and a direction in which nozzles of the first nozzle group eject the ink are different.
    Type: Application
    Filed: September 10, 2008
    Publication date: January 1, 2009
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Isao Suzuki, Yoshiro Eto, Masashi Shimosato, Takahisa Ikeda, Megumi Shimizu, Minoru Koyata, Hideaki Nishida, Takashi Kukuchi
  • Patent number: 7434909
    Abstract: An ink-jet head includes a nozzle array including plural nozzles. The nozzle array has a first nozzle group arranged in the center thereof and second nozzle groups arranged further on outer sides than the first nozzle group. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group. A direction in which nozzles of the second nozzle group eject an ink and a direction in which nozzles of the first nozzle group eject the ink are different.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: October 14, 2008
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Isao Suzuki, Yoshiro Eto, Masashi Shimosato, Takahisa Ikeda, Megumi Shimizu, Minoru Koyata, Hideaki Nishida, Takashi Kukuchi
  • Publication number: 20080158295
    Abstract: An ink-jet head includes a nozzle array including plural nozzles. The nozzle array has a first nozzle group arranged in the center thereof and second nozzle groups arranged further on outer sides than the first nozzle group. Inter-nozzle pitches of the second nozzle groups are larger than inter-nozzle pitches of the first nozzle group. A direction in which nozzles of the second nozzle group eject an ink and a direction in which nozzles of the first nozzle group eject the ink are different.
    Type: Application
    Filed: December 28, 2006
    Publication date: July 3, 2008
    Applicant: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Isao Suzuki, Yoshiro Eto, Masashi Shimosato, Takahisa Ikeda, Megumi Shimizu, Minoru Koyata, Hideaki Nishida, Takashi Kikuchi