Patents by Inventor Isao Fujii

Isao Fujii 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: 11965591
    Abstract: A lubrication device for a helicopter including: an oil sump in which oil for lubrication is retained; a lubrication pump configured to suck the oil from the oil sump to discharge the oil; and a lubrication passage extending from the lubrication pump to a first lubrication target. The lubrication passage includes: a first supply port that supplies the oil to the first lubrication target; an oil reservoir provided upstream of the first supply port; and an opening provided upstream of the oil reservoir and above the oil reservoir. The first supply port is formed right above the first lubrication target.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: April 23, 2024
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Isao Fujii, Yuji Yamazaki, Masatoshi Matsumoto, Kenta Ogasawara
  • Patent number: 11936309
    Abstract: A permanent-magnet-synchronous electric motor control device includes: a reference voltage value calculation unit for calculating a reference voltage value; an output voltage value calculation unit for calculating an output voltage value on the basis of a voltage command; a current weakening command calculation unit for calculating a current weakening command on the basis of the reference voltage value and the output voltage value; a voltage command calculation unit for calculating the voltage command on the basis of the current weakening command; and a power converter for supplying power to a permanent-magnet-synchronous electric motor on the basis of the voltage command. The current weakening command calculation unit calculates the current weakening command in which a high-frequency component is amplified on the basis of the difference between the reference voltage value and the output voltage value.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: March 19, 2024
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuya Tsuchimoto, Tatsuya Mori, Akira Furukawa, Isao Kezobo, Genki Fujii
  • Publication number: 20220282782
    Abstract: A lubrication device for a helicopter including: an oil sump in which oil for lubrication is retained; a lubrication pump configured to suck the oil from the oil sump to discharge the oil; and a lubrication passage extending from the lubrication pump to a first lubrication target. The lubrication passage includes: a first supply port that supplies the oil to the first lubrication target; an oil reservoir provided upstream of the first supply port; and an opening provided upstream of the oil reservoir and above the oil reservoir. The first supply port is formed right above the first lubrication target.
    Type: Application
    Filed: May 25, 2022
    Publication date: September 8, 2022
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Isao FUJII, Yuji Yamazaki, Masatoshi Matsumoto, Kenta Ogasawara
  • Patent number: 11365800
    Abstract: A lubrication device for a helicopter including: an oil sump in which oil for lubrication is retained; a lubrication pump configured to suck the oil from the oil sump to discharge the oil; and a lubrication passage extending from the lubrication pump to a first lubrication target. The lubrication passage includes: a first supply port that supplies the oil to the first lubrication target; an oil reservoir provided upstream of the first supply port; and an opening provided upstream of the oil reservoir and above the oil reservoir. The first supply port is formed right above the first lubrication target.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: June 21, 2022
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Isao Fujii, Yuji Yamazaki, Masatoshi Matsumoto, Kenta Ogasawara
  • Patent number: 10822106
    Abstract: An electric power generating device for an aircraft, which is driven by an output of an aircraft engine, comprises an input shaft to which a driving force of the engine is transmitted; a transmission arranged with the input shaft; an electric power generator arranged with the input shaft and the transmission and driven by an output of the transmission; a driving force transmission mechanism disposed on a first end side of the input shaft in an axial direction thereof, the driving force transmission mechanism being configured to transmit the output from the transmission to the electric power generator; and a casing including a mounting section on the first end side of the input shaft in the axial direction, wherein the transmission includes an input section provided on a second end side of the input shaft in the axial direction, the input section being configured to receive as an input a rotational driving force from the input shaft, and an output section provided on the first end side of the input shaft in th
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: November 3, 2020
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kenichiro Tanaka, Hideyuki Imai, Isao Fujii, Tatsuhiko Goi, Shogo Fuchiwaki
  • Patent number: 10677327
    Abstract: In a toroidal continuously variable transmission including at least one transmission unit including: an input disc and an output disc disposed coaxially; and a power roller tiltably interposed between the input disc and the output disc and configured to transmit a driving force from the input disc to the output disc, an integrally rotating member disposed so as to be spaced apart in an axial direction from at least one disc of the input disc and the output disc of each transmission unit and configured to rotate together with the at least one disc, and an annular interposed member provided between the at least one disc and the integrally rotating member and configured to rotate together with the at least one disc, are provided, and the interposed member is formed with a balance adjustment portion capable of adjusting weight balance in a circumferential direction.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: June 9, 2020
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Akihito Abe, Kenichiro Tanaka, Hideyuki Imai, Tatsuhiko Goi, Isao Fujii
  • Publication number: 20200124162
    Abstract: A lubrication device for a helicopter including: an oil sump in which oil for lubrication is retained; a lubrication pump configured to suck the oil from the oil sump to discharge the oil; and a lubrication passage extending from the lubrication pump to a first lubrication target. The lubrication passage includes: a first supply port that supplies the oil to the first lubrication target; an oil reservoir provided upstream of the first supply port; and an opening provided upstream of the oil reservoir and above the oil reservoir. The first supply port is formed right above the first lubrication target.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Isao FUJII, Yuji YAMAZAKI, Masatoshi MATSUMOTO, Kenta OGASAWARA
  • Patent number: 10330181
    Abstract: In a continuously variable transmission including: a first transmission unit including a first input disc and a first output disc disposed coaxially and a power roller tiltably interposed between these discs; and a second transmission unit disposed coaxially with the first transmission unit, including a second input disc and a second output disc disposed coaxially and a second power roller tiltably interposed between these discs, and disposed such that a back surface of the second input disc is opposed to a back surface of the first input disc, a tubular back surface cylinder wall is provided on each of the back surfaces of the first input disc and the second input disc so as to project therefrom.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: June 25, 2019
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kenichiro Tanaka, Hideyuki Imai, Tatsuhiko Goi, Isao Fujii
  • Publication number: 20180237154
    Abstract: An electric power generating device for an aircraft, which is driven by an output of an aircraft engine, comprises an input shaft to which a driving force of the engine is transmitted; a transmission arranged with the input shaft; an electric power generator arranged with the input shaft and the transmission and driven by an output of the transmission; a driving force transmission mechanism disposed on a first end side of the input shaft in an axial direction thereof, the driving force transmission mechanism being configured to transmit the output from the transmission to the electric power generator; and a casing including a mounting section on the first end side of the input shaft in the axial direction, wherein the transmission includes an input section provided on a second end side of the input shaft in the axial direction, the input section being configured to receive as an input a rotational driving force from the input shaft, and an output section provided on the first end side of the input shaft in th
    Type: Application
    Filed: March 8, 2016
    Publication date: August 23, 2018
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kenichiro TANAKA, Hideyuki IMAI, Isao FUJII, Tatsuhiko GOI, Shogo FUCHIWAKI
  • Patent number: 9890839
    Abstract: An electric power generating device (1) capable of suppressing an increase of a frontal surface area of an aircraft engine includes a transmission (22) connected with a rotary shaft (9) of the engine (E), an electric power generator (34) driven by an output of the transmission (22), an input shaft (27) having a shaft axis extending in a direction crossing the rotary shaft (9) and connected with the rotary shaft (9), and a transmitting mechanism (21) connected with the input shaft (27) to drive the transmission (22) about an axis extending in a direction perpendicular to the input shaft (27). The transmission (22) and the electric power generator (34) are disposed spaced a distance from each other in a direction circumferentially of the rotary shaft (9).
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: February 13, 2018
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Tatsuhiko Goi, Kenichiro Tanaka, Koji Watanabe, Isao Fujii
  • Patent number: 9765861
    Abstract: To provide an aircraft engine in which an accessory can be directly supported with no accessory gearbox intervening to thereby suppress an increase in size thereof, the aircraft engine (E) includes a take-out shaft (11) having a first end portion, connected with an engine rotary shaft (9) and extending in a radially outward direction, and also having a second end portion connected with an accessory (1), and a mounting pad (12) provided in an engine main body (EB) and to which the accessory (1) is fitted. The mounting pad (12) forms an outer perimeter of an opening (48) through which the take-out shaft (11) extends. The opening (48) is sealed by a covering (47), through which the take-out shaft (1) extends, and a sealing member (49) to seal between the covering (47) and the take-out shaft (11).
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: September 19, 2017
    Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Tatsuhiko Goi, Kenichiro Tanaka, Koji Watanabe, Isao Fujii
  • Publication number: 20170030440
    Abstract: In a continuously variable transmission including: a first transmission unit including a first input disc and a first output disc disposed coaxially and a power roller tiltably interposed between these discs; and a second transmission unit disposed coaxially with the first transmission unit, including a second input disc and a second output disc disposed coaxially and a second power roller tiltably interposed between these discs, and disposed such that a back surface of the second input disc is opposed to a back surface of the first input disc, a tubular back surface cylinder wall is provided on each of the back surfaces of the first input disc and the second input disc so as to project therefrom.
    Type: Application
    Filed: October 11, 2016
    Publication date: February 2, 2017
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kenichiro TANAKA, Hideyuki IMAI, Tatsuhiko GOI, Isao FUJII
  • Publication number: 20170030438
    Abstract: In a toroidal continuously variable transmission including at least one transmission unit including: an input disc and an output disc disposed coaxially; and a power roller tiltably interposed between the input disc and the output disc and configured to transmit a driving force from the input disc to the output disc, an integrally rotating member disposed so as to be spaced apart in an axial direction from at least one disc of the input disc and the output disc of each transmission unit and configured to rotate together with the at least one disc, and an annular interposed member provided between the at least one disc and the integrally rotating member and configured to rotate together with the at least one disc, are provided, and the interposed member is formed with a balance adjustment portion capable of adjusting weight balance in a circumferential direction.
    Type: Application
    Filed: October 11, 2016
    Publication date: February 2, 2017
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Akihito ABE, Kenichiro TANAKA, Hideyuki IMAI, Tatsuhiko GOI, Isao FUJII
  • Publication number: 20140038770
    Abstract: An electric power generating device (1) capable of suppressing an increase of a frontal surface area of an aircraft engine includes a transmission (22) connected with a rotary shaft (9) of the engine (E), an electric power generator (34) driven by an output of the transmission (22), an input shaft (27) having a shaft axis extending in a direction crossing the rotary shaft (9) and connected with the rotary shaft (9), and a transmitting mechanism (21) connected with the input shaft (27) to drive the transmission (22) about an axis extending in a direction perpendicular to the input shaft (27). The transmission (22) and the electric power generator (34) are disposed spaced a distance from each other in a direction circumferentially of the rotary shaft (9).
    Type: Application
    Filed: April 4, 2012
    Publication date: February 6, 2014
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Tatsuhiko Goi, Kenichiro Tanaka, Koji Watanabe, Isao Fujii
  • Publication number: 20140026589
    Abstract: To provide an aircraft engine in which an accessory can be directly supported with no accessory gearbox intervening to thereby suppress an increase in size thereof, the aircraft engine (E) includes a take-out shaft (11) having a first end portion, connected with an engine rotary shaft (9) and extending in a radially outward direction, and also having a second end portion connected with an accessory (1), and a mounting pad (12) provided in an engine main body (EB) and to which the accessory (1) is fitted. The mounting pad (12) forms an outer perimeter of an opening (48) through which the take-out shaft (11) extends. The opening (48) is sealed by a covering (47), through which the take-out shaft (1) extends, and a sealing member (49) to seal between the covering (47) and the take-out shaft (11).
    Type: Application
    Filed: April 4, 2012
    Publication date: January 30, 2014
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Tatsuhiko Goi, Kenichiro Tanaka, Koji Watanabe, Isao Fujii
  • Publication number: 20110070579
    Abstract: The objective is to provide a method for rapidly, and highly accurately performing genetic detection of the cyclopiazonic acid-producing ability in a strain belonging to genus Aspergillus, etc. as well as a transformant (strain), etc. that does not produce cyclopiazonic acid or a precursor thereof, cycloacetoacetyl L-tryptophan (CAT). A polynucleotide encodes the following polypeptides: (1) a polypeptide comprising the amino acid sequence depicted in SEQ ID NO: 2; (2) a polypeptide comprising an amino acid sequence with one or several amino acids deleted, substituted or added in the amino acid sequence depicted in SEQ ID NO: 2 and having a polyketide synthase-nonribosomal peptide synthetase activity; or (3) a polypeptide having 90% or more homology (identity) as an overall average with the amino acid sequence depicted in SEQ ID NO: 2 and having a polyketide synthase-nonribosomal peptide synthetase activity.
    Type: Application
    Filed: October 16, 2008
    Publication date: March 24, 2011
    Inventors: Masafumi Tokuoka, Tadashi Takahashi, Yasuji Koyama, Isao Fujii, Yasuyo Seshime
  • Patent number: 7878290
    Abstract: A saddle riding type vehicle capable of making turns by leaning a vehicle body includes a pair of rear wheels provided at opposite sides of the vehicle body, a pair of support mechanisms arranged to support the pair of rear wheels to be movable, independently of each other, up and down about a pivot axis relative to the vehicle body, an engine disposed forward of the pivot axis to produce a drive force, a differential mechanism arranged to distribute the drive force of the engine to the pair of rear wheels and to absorb a rotating speed difference between the pair of rear wheels at a time of making a turn, the differential mechanism including drive shafts arranged between the engine and the pivot axis, a pair of shaft drive mechanisms provided for the pair of rear wheels, respectively, and arranged to transmit the drive force of the differential mechanism to the pair of rear wheels, and a pair of constant velocity universal joints provided for the pair of shaft drive mechanisms, respectively, each including a
    Type: Grant
    Filed: December 7, 2009
    Date of Patent: February 1, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Eiichirou Tsujii, Masayuki Hirano, Takeshi Toyota, Sachiyo Hasegawa, Isao Fujii
  • Publication number: 20100147615
    Abstract: A saddle riding type vehicle capable of making turns by leaning a vehicle body includes a pair of rear wheels provided at opposite sides of the vehicle body, a pair of support mechanisms arranged to support the pair of rear wheels to be movable, independently of each other, up and down about a pivot axis relative to the vehicle body, an engine disposed forward of the pivot axis to produce a drive force, a differential mechanism arranged to distribute the drive force of the engine to the pair of rear wheels and to absorb a rotating speed difference between the pair of rear wheels at a time of making a turn, the differential mechanism including drive shafts arranged between the engine and the pivot axis, a pair of shaft drive mechanisms provided for the pair of rear wheels, respectively, and arranged to transmit the drive force of the differential mechanism to the pair of rear wheels, and a pair of constant velocity universal joints provided for the pair of shaft drive mechanisms, respectively, each including a
    Type: Application
    Filed: December 7, 2009
    Publication date: June 17, 2010
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Eiichirou TSUJII, Masayuki HIRANO, Takeshi TOYOTA, Sachiyo HASEGAWA, Isao FUJII
  • Patent number: 7485020
    Abstract: An outboard motor includes a case extending generally vertically and supported on a hull. An engine is supported at an upper end of the case. A propeller is supported by a lower end of the case. A drive shaft is supported within the case for rotation about a generally vertical axis. The driveshaft has an upper end operatively connected to the engine and a lower end operatively connected to the propeller. An upper portion of the case includes an elongate extruded portion having substantially the same cross-sectional shape along its length.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: February 3, 2009
    Assignee: Yamaha Marine Kabushiki Kaisha
    Inventors: Daisuke Nakamura, Isao Fujii, Ken Wakui
  • Patent number: 7458866
    Abstract: An outboard drive includes a prime mover having an output shaft. A driveshaft is coupled with the output shaft. Both shafts having axes that extend at least generally parallel to each other. A propulsion device is coupled with the driveshaft. The prime mover rotates the output shaft to drive the propulsion device through the driveshaft. A speed change mechanism is positioned between the output shaft and the driveshaft. The speed change mechanism changes a rotational speed of the output shaft transmitted to the driveshaft.
    Type: Grant
    Filed: November 21, 2005
    Date of Patent: December 2, 2008
    Assignee: Yamaha Marine Kabushiki Kaisha
    Inventors: Daisuke Nakamura, Isao Fujii, Ken Wakui