Patents by Inventor Kotaro Chiba

Kotaro Chiba 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: 10995756
    Abstract: Provided is an air compressor which helps to attain a proper discharge air temperature and which is superior in energy saving property.
    Type: Grant
    Filed: March 24, 2017
    Date of Patent: May 4, 2021
    Assignee: Hitachi, Ltd.
    Inventors: Masanao Kotani, Takeshi Tsuchiya, Ryoji Kawai, Kotaro Chiba, Minako Kanada, Sachio Sekiya
  • Publication number: 20210088045
    Abstract: Provided is a liquid supply mechanism including: a plurality of liquid supply sections each including a plurality of branch paths whose central axes intersect with each other, and a supply path having a side surface to which the plurality of branch paths of the plurality of liquid supply sections are directly connected, respectively, and supplying liquid, which is supplied from an upstream, to the branch paths.
    Type: Application
    Filed: December 4, 2018
    Publication date: March 25, 2021
    Inventors: Kotaro CHIBA, Masahiko TAKANO, Shigeyuki YORIKANE, Kenji MORITA, Yoshitaka TAKEUCHI
  • Publication number: 20200386229
    Abstract: A screw compressor includes a screw rotor, a casing, and a fluid supply portion to supply fluid in a membrane form into a compression chamber in the casing. The screw rotor has a male and female rotors. A male bore covering the male rotor and a female bore covering the female rotor are formed on the inner surface of the casing. An intersection line, on a higher pressure side, of the male and female bores is defined as a compression cusp. In a bore development view, a trajectory made by the first intersection of an extension line of a female lobe ridge and a male lobe ridge being moved, along with the rotation of the male and female rotors, is defined as a trajectory line. An opening of the fluid supply section to the compression chamber is positioned between the compression cusp and the trajectory line.
    Type: Application
    Filed: August 6, 2018
    Publication date: December 10, 2020
    Inventors: Kotaro CHIBA, Masahiko TAKANO, Shigeyuki YORIKANE, Kenji MORITA, Yoshitaka TAKEUCHI, Minako KANADA
  • Publication number: 20200378385
    Abstract: A screw compressor includes: a screw rotor including a rotor section and a shaft section; a casing having a shaft hole through which the shaft section is inserted, the casing housing the screw rotor; and a delivery side shaft sealing unit configured to seal a clearance between the shaft section and the shaft hole against leakage of a working fluid. The delivery side shaft sealing unit includes an annular groove provided in the shaft section, a seal ring disposed movably in an axial direction of the shaft section within the annular groove, the seal ring being capable of sliding contact with the shaft hole and a side wall surface of the annular groove, and a shaft sealing fluid supply passage communicating with the shaft hole and supplying a fluid to one side, in an axial direction, of the seal ring.
    Type: Application
    Filed: February 21, 2018
    Publication date: December 3, 2020
    Inventors: Kotaro CHIBA, Masahiko TAKANO, Kenji MORITA, Yoshitaka TAKEUCHI, Takeshi TSUCHIYA
  • Patent number: 10514037
    Abstract: There is provided a liquid feeding type screw compressor that can reduce size and weight and improve vibration insulation and sound insulation. A liquid feeding type screw compressor includes as components: a compressor main body; a motor driving the compressor main body; and a gas-liquid separator separating a liquid from a compressed air discharged from the compressor main body. The motor is arranged above the compressor main body. The gas-liquid separator is arranged below the compressor main body. A compressor main body casing constituting an inner cylindrical space forming a compression operation chamber together with the screw rotor and constituting the contour of the compressor main body and a casing constituting the contour of another component consist of an integrally molded single member.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: December 24, 2019
    Assignee: HITACHI INDUSTRIAL EQUIPMENT SYSTEMS CO., LTD.
    Inventors: Kosuke Sadakata, Hitoshi Nishimura, Toshikazu Harashima, Kentaro Yamamoto, Takeshi Tsuchiya, Kotaro Chiba
  • Publication number: 20190242382
    Abstract: Provided is an air compressor which helps to attain a proper discharge air temperature and which is superior in energy saving property.
    Type: Application
    Filed: March 24, 2017
    Publication date: August 8, 2019
    Inventors: Masanao KOTANI, Takeshi TSUCHIYA, Ryoji KAWAI, Kotaro CHIBA, Minako KANADA, Sachio SEKIYA
  • Publication number: 20190170143
    Abstract: Provided is a fluid machine configured such that liquid supplied to a working chamber from the outside of the fluid machine is dispersed extensively in the working chamber. This fluid machine is constituted of a screw rotor and a casing for accommodating the screw rotor and is provided with a liquid supply section for supplying liquid into a working chamber from the outside. The liquid supply section is configured so that liquid is dispersed in the longitudinal direction of the tooth groove of the screw rotor rather than in the width direction thereof.
    Type: Application
    Filed: August 22, 2017
    Publication date: June 6, 2019
    Inventors: Kotaro CHIBA, Masahiko TAKANO, Toshikazu HARASHIMA, Kosuke SADAKATA, Kentaro YAMAMOTO, Takeshi TSUCHIYA, Masanao KOTANI, Ryoji KAWAI, Minako KANADA
  • Patent number: 10145374
    Abstract: A slide valve forming a part of a bore and movable in an axial direction of the rotors, foot sections on a discharge side end face of the slide valve, and discharge ports and on a discharge chamber side of the slide valve in order to discharge compressed gas taken into a compression operation chamber from the suction chamber and compressed. At a discharge side end portion of the slide valve, first discharge channels and lead the compressed gas discharged from the discharge port and lead the compressed gas to the discharge chamber and second discharge channels are provided on a radial direction outer side of the first discharge channel and opened to the first discharge channels and the discharge chamber to lead a part of the compressed gas flowing in the first discharge channels and feed the part of the compressed gas to the discharge chamber.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: December 4, 2018
    Assignee: Hitachi-Johnson Controls Air Conditioning, Inc.
    Inventors: Ryuichiro Yonemoto, Takeshi Tsuchiya, Eisuke Kato, Kotaro Chiba, Yasuaki Iizuka
  • Publication number: 20180106254
    Abstract: There is provided a liquid feeding type screw compressor that can reduce size and weight and improve vibration insulation and sound insulation. A liquid feeding type screw compressor includes as components: a compressor main body; a motor driving the compressor main body; and a gas-liquid separator separating a liquid from a compressed air discharged from the compressor main body. The motor is arranged above the compressor main body. The gas-liquid separator is arranged below the compressor main body. A compressor main body casing constituting an inner cylindrical space forming a compression operation chamber together with the screw rotor and constituting the contour of the compressor main body and a casing constituting the contour of another component consist of an integrally molded single member.
    Type: Application
    Filed: March 28, 2016
    Publication date: April 19, 2018
    Inventors: Kosuke SADAKATA, Hitoshi NISHIMURA, Toshikazu HARASHIMA, Kentaro YAMAMOTO, Takeshi TSUCHIYA, Kotaro CHIBA
  • Publication number: 20170030356
    Abstract: A slide valve forming a part of a bore and movable in an axial direction of the rotors, foot sections on a discharge side end face of the slide valve, and discharge ports and on a discharge chamber side of the slide valve in order to discharge compressed gas taken into a compression operation chamber from the suction chamber and compressed. At a discharge side end portion of the slide valve, first discharge channels and lead the compressed gas discharged from the discharge port and lead the compressed gas to the discharge chamber and second discharge channels are provided on a radial direction outer side of the first discharge channel and opened to the first discharge channels and the discharge chamber to lead a part of the compressed gas flowing in the first discharge channels and feed the part of the compressed gas to the discharge chamber.
    Type: Application
    Filed: December 15, 2014
    Publication date: February 2, 2017
    Inventors: Ryuichiro YONEMOTO, Takeshi TSUCHIYA, Eisuke KATO, Kotaro CHIBA, Yasuaki IIZUKA
  • Patent number: 9315147
    Abstract: A brake light control device that generates a braking force, and is used with a brake device which can control the braking force according to a signal from a brake control unit regardless of the operation of a brake operator includes: a brake light switch that is inserted and arranged into an electrical connection path between a power supply and a brake light, and is opened and closed together with the operation of the brake operator; and a switching switch that is opened and closed in response to braking force control. The brake light control device further includes: a blinking switch that is connected in parallel to the switching switch; and a control unit that, when the brake light is required to be blinked, is configured to keep the switching switch in an OFF state, and blinks the brake light by repeatedly switching on and off the blinking switch.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: April 19, 2016
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Katsuaki Kubotera, Kotaro Chiba
  • Publication number: 20140365097
    Abstract: A vehicle yaw moment control device is basically provided with a steering state detection sensor and a controller. The steering state detection sensor is configured to detect a steered angle speed and a steered angle acceleration of a vehicle. The controller includes a brake force control part that is programmed to calculate a yaw moment controlled variable that is applied to the vehicle based on a signal detected by the steering state detection sensor and applying a brake force difference to left and right vehicle wheels in accordance with the yaw moment controlled variable. The brake force control part is further programmed to output a command to apply a predetermined brake force to a vehicle wheel to which brake force had not been applied upon determining a decrease in the steered angle speed.
    Type: Application
    Filed: March 8, 2013
    Publication date: December 11, 2014
    Inventors: Naoteru Kujubu, Kotaro Chiba
  • Publication number: 20140288783
    Abstract: A brake light control device that generates a braking force, and is used with a brake device which can control the braking force according to a signal from a brake control unit regardless of the operation of a brake operator includes: a brake light switch that is inserted and arranged into an electrical connection path between a power supply and a brake light, and is opened and closed together with the operation of the brake operator; and a switching switch that is opened and closed in response to braking force control. The brake light control device further includes: a blinking switch that is connected in parallel to the switching switch; and a control unit that, when the brake light is required to be blinked, is configured to keep the switching switch in an OFF state, and blinks the brake light by repeatedly switching on and off the blinking switch.
    Type: Application
    Filed: October 12, 2012
    Publication date: September 25, 2014
    Inventors: Katsuaki Kubotera, Kotaro Chiba
  • Patent number: 5057286
    Abstract: A vessel for use in hydrothermal synthesis, comprises: a vessel body to be heated from outside; an inner tubular vessel which is placed within the vessel body with a tubular gap being formed therebetween, the inner tubular vessel having an inner surface which is formed of a precious metal such as silver, gold or platinum, and having a cover with a first small hole therein; and a buffer compartment for covering the first small hole, the buffer compartment having one wall which is defined by the cover and having the other wall with a second small hole therein.
    Type: Grant
    Filed: February 5, 1990
    Date of Patent: October 15, 1991
    Assignee: The Japan Steel Works, Ltd.
    Inventors: Kotaro Chiba, Motohide Hatanaka, Masayuki Kawai
  • Patent number: 4723595
    Abstract: A heat exchanger using two hydrogen storage alloys, including: a tubular housing member disposed in a horizontal position; a vertical partition plate extending axially within the housing member for partitioning the inside space of the housing member into two, first and second reaction zones in which the first and second alloys are contained, respectively, to form an upper space above each alloy; first and second heat-exchange tubes disposed in the first and second reaction zones, respectively, and arranged so that first and second fluids may be passed therethrough for indirect heat exchange with the first and second alloys, respectively; openings provided in the vertical partition plate at least at positions so that the upper space in the first and second reaction zones are in fluid communication with each other; and a plurality of vertically extending gas passages provided in each of the first and second reaction zones, and each being in fluid communication with the upper space, whereby hydrogen gas released
    Type: Grant
    Filed: July 30, 1986
    Date of Patent: February 9, 1988
    Assignees: Chiyoda Chemical Engineering Construction Co., Ltd., Japan Steel Works
    Inventors: Takashi Yasunaga, Jotaro Itoh, Akira Yanoma, Takaharu Nitta, Kotaro Chiba, Masaji Yoneta, Sakio Inoue