Patents by Inventor Mitsuru Kondo

Mitsuru Kondo 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: 6807870
    Abstract: A rotary shaft axial elongation measuring method and device enable accurate measuring of rotary shaft axial elongation regardless of the amount of the elongation. Grooves (10, 12), arranged opposite to each other in a turned V shape along the axial direction, are provided in a rotational surface of the rotary shaft (1) whose axial elongation is to be measured. A sensor (14) is arranged opposite the rotational surface of the rotary shaft (1). The sensor (14) generates pulses upon passing of the groves (10, 12) following rotation of the rotary shaft (1). As a circumferential interval between the grooves (10, 12) differs according to the axial directional position of the rotary shaft (1), if the positions of the grooves (10, 12) at the position of the sensor (14) change due to the axial elongation, the interval of the pulses generated by the sensor (14) changes. Thus, by the change in the pulse generation interval, the axial elongation is measured.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: October 26, 2004
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Mitsuru Kondo, Kazuharu Hirokawa
  • Publication number: 20040182145
    Abstract: A glow plug comprises a cylindrical housing having an inward protrusion extending radially inwardly, a threaded portion for screwing the glow plug in an engine plug hole and a sealing portion in a front side of the male threaded portion for airtightly engaging the housing with a given portion of the plug hole, a sheath having a rear sheath end portion airtightly fixed in the housing, a heater disposed in the sheath, a center electrode disposed in the housing and having a front electrode end portion electronically connected with the heater and mechanically connected with the sheath and an outward protrusion protruding radially outwardly, and a combustion pressure sensor having a pressure-sensitive element arranged between a front surface of the inward protrusion and a rear surface of the outward protrusion to generate an electrical signal in response to variations in stress applied thereto.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 23, 2004
    Applicant: NGK SPARK PLUG CO. LTD.
    Inventors: Koji Okazaki, Mitsuru Kondo, Tomohiro Fuma, Takahiro Suzuki
  • Publication number: 20040182144
    Abstract: A glow plug comprises a plug case, a plug body held in the plug case and a combustion pressure sensor. The plug case has a sealing face formed on an inner surface thereof. The plug body includes a housing having a sealing portion airtightly engaged onto the sealing face of the plug case, a sheath having a rear end portion airtightly fixed in a front end portion of the housing, a heater disposed in the sheath, and a center electrode disposed in the housing and mechanically connected with the housing, the sheath and/or the heater so as to become axially displaced due to variations in combustion pressure. The combustion pressure sensor is arranged between rear end portions of the plug case and the center electrode and has a pressure-sensitive element that converts an axial displacement of the center electrode into an electrical signal for detection of the combustion pressure.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 23, 2004
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Koji Okazaki, Mitsuru Kondo, Tomohiro Fuma, Takahiro Suzuki
  • Patent number: 6769257
    Abstract: A gas turbine combustor transition piece outlet structure enabling a reduction in the temperature difference of a flange formed at the transition piece outlet. A flange is formed with a cooling medium channel along the inner circumference, cooling medium channels along the left and right side surfaces, and heating medium channels along the top and bottom surfaces. By cooling the inner circumference or the side surfaces of the flange by a cooling medium or heating the top and bottom surfaces of the flange by a heating medium, the temperature difference of the flange is reduced. Note that as the cooling medium, it is possible to use compressed air, low temperature steam, or fuel, while as the heating medium, it is possible to use high temperature steam or combustion gas.
    Type: Grant
    Filed: February 15, 2002
    Date of Patent: August 3, 2004
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Mitsuru Kondo, Satoshi Hada, Katsunori Tanaka
  • Patent number: 6662568
    Abstract: The present invention provides a hollow structure with at least one flange which can eliminate the possibility of creating crackings due to the thermal fatigue, thereby improving the durability thereof. A hollow structure with an flange according to the present invention includes at least one annular flange fixedly attached around the hollow structure which has a temperature gradient in the direction of the thickness of the wall thereof, wherein said at least one annular flange including an outer portion formed of a metal material having a coefficient of linear expansion greater than that of the metal material forming another portion of said at least one annular flange.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: December 16, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Hiroshi Shimizu, Mitsuru Kondo, Hironobu Hakoda, Yukihiro Hashimoto, Katsunori Tanaka, Sousuke Nakamura
  • Publication number: 20030140633
    Abstract: The present invention provides a hollow structure with at least one flange which can eliminate the possibility of creating crackings due to the thermal fatigue, thereby improving the durability thereof. A hollow structure with an flange according to the present invention includes at least one annular flange fixedly attached around the hollow structure which has a temperature gradient in the direction of the thickness of the wall thereof, wherein said at least one annular flange including an outer portion formed of a metal material having a coefficient of linear expansion greater than that of the metal material forming another portion of said at least one annular flange.
    Type: Application
    Filed: March 5, 2003
    Publication date: July 31, 2003
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Hiroshi Shimizu, Mitsuru Kondo, Hironobu Hakoda, Yukihiro Hashimoto, Katsunori Tanaka, Sousuke Nakamura
  • Patent number: 6553766
    Abstract: A cooling structure of a combustor tail tube is capable of avoiding the formation of cracks in the tail tube by lessening thermal stress and preventing thermal deformation, thus extending the service life. A multiplicity of cooling jackets (5) extend in the longitudinal direction of the tail tube of a gas turbine combustor along the entire circumference of the tail tube wall. The passage sectional area of the cooling jackets (5) is varied depending on the metal temperature of parts of the tail tube (4). For example, the passage sectional area of the cooling jackets (5) formed at the rotor side wall and the mutually opposite side walls of the adjacent tail tube is larger than the passage sectional area of the cooling jackets (5) formed at the casing side wall.
    Type: Grant
    Filed: April 12, 2001
    Date of Patent: April 29, 2003
    Assignee: Mitsubishi Heavy Industries, Ltd.
    Inventors: Takehiko Shimizu, Satoshi Hada, Kouichi Akagi, Katsunori Tanaka, Ryotaro Magoshi, Mitsuo Hasegawa, Shigemi Mandai, Mitsuru Kondo
  • Publication number: 20020112483
    Abstract: A gas turbine combustor transition piece outlet structure enabling a reduction in the temperature difference of a flange formed at the transition piece outlet. A flange is formed with a cooling medium channel along the inner circumference, cooling medium channels along the left and right side surfaces, and heating medium channels along the top and bottom surfaces. By cooling the inner circumference or the side surfaces of the flange by a cooling medium or heating the top and bottom surfaces of the flange by a heating medium, the temperature difference of the flange is reduced. Note that as the cooling medium, it is possible to use compressed air, low temperature steam, or fuel, while as the heating medium, it is possible to use high temperature steam or combustion gas.
    Type: Application
    Filed: February 15, 2002
    Publication date: August 22, 2002
    Applicant: MITSUBISHI HEAVY INDUSTRIES LTD.
    Inventors: Mitsuru Kondo, Satoshi Hada, Katsunori Tanaka
  • Publication number: 20020079917
    Abstract: An IC measuring device constituted by a first timing generator (TG21) for outputting a pair of judgment strobe pulses (S21); a first edge detector (E21) for detecting the states of a data strobe (DCK2) at two time points within one test cycle on the basis of the pair of judgment strobe pulses (S21); a second timing generator (TG22) for outputting a pair of judgment strobe pulses (S22); a second edge detector (E22) for detecting the states of data at two time points within one test cycle on the basis of the pair of judgment strobe pulses (S22); and a judgment section (J22) for determining acceptance/rejection of the timing of the data with reference to the data strobe on the basis of the states of the data and the states of the data strobe.
    Type: Application
    Filed: December 26, 2001
    Publication date: June 27, 2002
    Inventors: Toshiyuki Ohtaki, Mitsuru Kondo
  • Publication number: 20020033052
    Abstract: Rotary shaft axial elongation measuring method and device enable an accurate measuring of a rotary shaft axial elongation regardless of sizes of the elongation. Grooves (10, 12), arranged mutually opposing in a turned V shape along axial direction, are provided in a rotational surface of a rotary shaft (1), axial elongation of which is to be measured. A sensor (14) is arranged opposing the rotational surface of the rotary shaft (1). The sensor (14) generates pulses upon passing of the grooves (10, 12) following rotation of the rotary shaft (1). As a circumferential interval between the grooves (10, 12) differs according to the axial directional position of the rotary shaft (1), if the positions of the grooves (10, 12) at the position of the sensor (14) change due to the axial elongation, interval of the pulses generated by the sensor (14) changes. Thus, by the change in the pulse generation interval, the axial elongation is measured.
    Type: Application
    Filed: August 14, 2001
    Publication date: March 21, 2002
    Inventors: Mitsuru Kondo, Kazuharu Hirokawa
  • Publication number: 20010037646
    Abstract: To present a cooling structure of combustor tail tube capable of avoiding formation of cracks in the tail tube by lessening thermal stress and preventing thermal deformation, and extending the service life, the invention provides a cooling structure of combustor tail tube forming a multiplicity of cooling jackets (5) extending in the longitudinal direction of tail tube of a gas turbine combustor along the entire circumference of the tail tube wall, in which passage sectional area of the cooling jackets (5) is varied depending on the metal temperature of parts of the tail tube (4), for example, the passage sectional area of the cooling jackets (5) formed at the rotor side wall and the mutually opposite side walls of the adjacent tail tube is formed larger than the passage sectional area of the cooling jackets (5) formed at the casing side wall.
    Type: Application
    Filed: April 12, 2001
    Publication date: November 8, 2001
    Inventors: Takehiko Shimizu, Satoshi Hada, Kouichi Akagi, Katsunori Tanaka, Ryotaro Magoshi, Mitsuo Hasegawa, Shigemi Mandai, Mitsuru Kondo
  • Patent number: 5323643
    Abstract: A device for detecting a change in internal pressure of a cylinder includes a cylinder head, an ignition plug threadingly fitted into a plug insertion hole of the cylinder head. An annular piezoelectric sensor is secured in the plug insertion hole by screwing the plug into the insertion hole. The sensor has such an outer periphery that, when the ignition plug is screwed into the plug hole, a part of the outer periphery of the sensor placed is brought into engagement with an inside periphery of the plug hole and is thereby prevented from being further rotated in the screwing direction. By using a gasket having the same relative shape to the periphery of the plug insertion hole as that of the above sensor, rotation of the sensor can be prevented even when the sensor does not have such a relative shape.
    Type: Grant
    Filed: April 6, 1992
    Date of Patent: June 28, 1994
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Takao Kojima, Yoshiaki Matsubara, Mitsuru Kondo
  • Patent number: 5096872
    Abstract: The present invention provides a recording material utilizing the color forming reaction between a colorless or light-colored basic dye and a color acceptor reactive with the dye to form a color and forming on the same or different substrate layer or layers containing the basic dye and the color acceptor conjointly or separately, the recording material being characterized in that the color acceptor is at least one of salicylic acid derivatives represented by the following formula [I] or polyvalent metal salts thereof ##STR1## wherein X is straight-chain or branched-chain C.sub.1.about.12 alkylene or C.sub.5.about.12 cycloalkylene, R is C.sub.1.about.20 alkyl having or not having a substituent or C.sub.2.about.20 alkenyl having or not having a substituent, Y is C.sub.1.about.6 alkyl, C.sub.2.about.6 alkenyl, C.sub.7.about.10 aralkyl or halogen atom, Z is C.sub.1.about.6 alkyl, C.sub.2.about.6 alkenyl, C.sub.7.about.10 aralkyl, C.sub.1.about.
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: March 17, 1992
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Tetsuo Tsuchida, Fumio Seyama, Tatsuya Meguro, Mitsuru Kondo
  • Patent number: 5094999
    Abstract: A recording material utilizing the reaction between a colorless or light-colored basic dye and a color acceptor reactive with the basic dye to form a color and forming on the same or different substrate a layer or layers containing the basic dye of the color acceptor conjointly or separately, the recording material being characterized in that the color acceptor is at least one of salicyclic acid derivatives represented by the following formula [I] or polyvalent metal salts thereof ##STR1## wherein Ar, R, X, l and m are defined in the specification.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: March 10, 1992
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Testsuo Tsuchida, Fumio Seyama, Tatsuya Meguro, Mitsuru Kondo
  • Patent number: 4985393
    Abstract: A heat sensitive recording material comprising a substrate and a heat sensitive recording layer thereon incorporating a colorless or light-colored basic dye and a color acceptor reactive with the dye to form a color when contacted therewith, the recording material being characterized in that, as the color acceptor is used at least one compound of the formula [I] ##STR1## wherein R is an alkylene group having at least one bond selected from the group consisting of ester bond and amido bond in the main chain, R.sub.1 and R.sub.2 are each hydrogen atom, alkyl, cycloalkyl, alkenyl, alkoxyl, hydroxyl or halogen atom.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: January 15, 1991
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Fumio Seyama, Tetsuo Tsuchida, Mitsuru Kondo
  • Patent number: 4977132
    Abstract: The heat-sensitive record material according to this invention has a heat-sensitive recording layer on a base sheet, which comprises a colorless or pale colored basic chromogenic material and a phenolic compound developing a color by contacting with the chromogenic material. The recording layer comprises, as the basic chromogenic material, at least one fluoran derivative represented by the following formula [I] and at least one phthalide derivative represented by the following formula [II] in a weight ratio of 100:1.about.20; ##STR1## wherein each R.sub.1, R.sub.2 represents alkyl, unsaturated alkyl, cycloalkyl, aryl, aralkyl or tetrahydrofurfuryl, each of which may have at least one substituent selected from the group consisting of halogen, alkyl and alkoxyl, R.sub.1 may cooperate with R.sub.2 to form a ring, each R.sub.3, R.sub.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: December 11, 1990
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Tetsuo Tsuchida, Tatsuya Meguro, Fumio Seyama, Mitsuru Kondo
  • Patent number: 4898941
    Abstract: A process for preparing a diphenylalkene derivative of the formula [II] ##STR1## which comprises oxidizing a diphenylalkanoic acid derivative of the formula [I] ##STR2## wherein R.sub.1 and R.sub.2 are each substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted aralkyl or substituted or unsubstituted aryl, R.sub.1 and R.sub.2 may form a heteroring together theirwith or with an adjacent benzene ring, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10 and R.sub.11 are each hydrogen atom, halogen atom, substituted or unsubstituted alkyl, substituted or unsubstituted hydroxyl or substituted or unsubstituted amino, R.sub.12 and R.sub.13 are each hydrogen atom or substituted or unsubstituted alkyl, X is carboxyl, amide, ester or halide thereof.
    Type: Grant
    Filed: August 11, 1987
    Date of Patent: February 6, 1990
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Nobuo Kanda, Haruo Omura, Yukihiro Abe, Mitsuru Kondo
  • Patent number: 4828957
    Abstract: Disclosed is a two-color heat-sensitive recording material which comprises a base sheet and a recording layer of single-layer or multi-layer structure formed on the base sheet, the recording layer comrising:(a) a diazonium salt,(b) a basic leuco dye,(c) a 2-hydroxy-3-naphthoic acid derivative which acts as a coupler compound for causing the diazonium salt to develop color when heated and which also acts as a color developing material for causing the basic leuco dye to develop color when heated, and(d) a basic substance, wherein the diazonium salt and the basic leuco dye each form a color upon application of heat, thereby giving the first image of a mixed color, and, then, after irradiation of an active ray to decompose the diazonium salt, the basic leuco dye alone forms its own color upon application of heat, thereby giving the second image whose color is different from the mixed color of the first image.
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: May 9, 1989
    Assignee: Kanzaki Paper Manufacturing Company, Ltd.
    Inventors: Naoki Yonese, Tosaku Okamoto, Mitsuru Kondo
  • Patent number: 4803193
    Abstract: In a heat-sensitive recording material comprising on a substrate a recording layer containing a colorless or pale-colored basic dye and an electron accepting reactant material, the heat-sensitive recording material which is characterized in that the basic dye comprises at least one chromeno compound represented by the formula [I] below ##STR1## wherein G and R.sub.1 .about.R.sub.4 are defined in the specification.
    Type: Grant
    Filed: December 23, 1987
    Date of Patent: February 7, 1989
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Nobuo Kanda, Yukihiro Abe, Mitsuru Kondo
  • Patent number: 4794101
    Abstract: In a heat-sensitive recording material incorporating a colorless or pale-colored basic dye and a color acceptor which is reactive with the dye to form a color when contacted therewith, the recording material characterized in that (a) as the basic dye are used 100 parts by weight of a specific phthalide derivative of the formula [I] and 20 to 100 parts by weight of a specific black color-forming fluoran derivative of the formula [II], (b) as the color acceptor is used a polyvalent metal salt of an aromatic carboxylic acid and (c) a recording sensitizer is further used, and whereby the resulting record images are at least 0.75 in PCS value at 800 nm.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: December 27, 1988
    Assignee: Kanzaki Paper Manufacturing Co., Ltd.
    Inventors: Nobuo Kanda, Kimie Tsuboi, Fumio Seyama, Mitsuru Kondo