Patents by Inventor Kouhei Igarashi

Kouhei Igarashi 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: 20230366786
    Abstract: A hair collection tool includes a pedestal portion having a thin plate shape and having a collecting surface; a holding base attached to the collecting surface, and a fixing portion attached to the collecting surface through the holding base or directly. The holding base includes a side surface erected at a position away from an end portion of the pedestal portion by a first distance, and a holding surface extending along the collecting surface in a direction away from the end portion from a position by a second distance above the collecting surface of the side surface. The first distance is longer than a thickness of scissor blades that cut hair, and the second distance is longer than a width of the scissor blades.
    Type: Application
    Filed: July 28, 2022
    Publication date: November 16, 2023
    Inventors: Kouhei IGARASHI, Chie TAKITA
  • Patent number: 7663276
    Abstract: A photo sensor module includes a holder made of resin and a light-emitting element and a light-receiving element accommodated in the holder. A printed circuit board is fixed to a flat side wall portion of a motor. The resin holder has a guide portion which is formed integrally therewith and which comes into contact with an end surface and a bearing-holding portion of an end bell. The printed circuit board is fixed in a state in which the guide portion is sandwiched between the bearing-holding portion and the printed circuit board while being brought into contact with the end surface of the end bell, whereby the photo sensor module is positioned in thrust and radial directions of the motor.
    Type: Grant
    Filed: February 12, 2008
    Date of Patent: February 16, 2010
    Assignee: Mabuchi Motor Co., Ltd.
    Inventor: Kouhei Igarashi
  • Publication number: 20080197729
    Abstract: A photo sensor module includes a holder made of resin and a light-emitting element and a light-receiving element accommodated in the holder. A printed circuit board is fixed to a flat side wall portion of a motor. The resin holder has a guide portion which is formed integrally therewith and which comes into contact with an end surface and a bearing-holding portion of an end bell. The printed circuit board is fixed in a state in which the guide portion is sandwiched between the bearing-holding portion and the printed circuit board while being brought into contact with the end surface of the end bell, whereby the photo sensor module is positioned in thrust and radial directions of the motor.
    Type: Application
    Filed: February 12, 2008
    Publication date: August 21, 2008
    Inventor: Kouhei IGARASHI
  • Patent number: 7414238
    Abstract: An optical encoder device for a small-sized motor has a code wheel attached to a motor shaft which extends to the exterior of the motor through a bearing accommodated in a bearing-retaining section provided on an end bell of the motor, and a board on which a photosensor module is mounted such that an optical modulation track portion of the code wheel is positioned and disposed in a gap of the photosensor module. While a spacer is sandwiched between the end bell and the board, the motor, the spacer, and the board are fixed together by soldering a pair of motor terminals to a printed wiring portion of the board. The spacer has a generally U-shaped structure so as to allow fitting in position thereof from a direction orthogonal to the motor shaft.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: August 19, 2008
    Assignee: Mabuchi Motor Co., Ltd.
    Inventors: Kouhei Igarashi, Toshihiro Kamiyoshihara
  • Patent number: 7362242
    Abstract: A photosensor module is composed of a light-receiving element module accommodating a light-receiving element, and a light-emitting element module accommodating a light-emitting element, which modules are separate, paired components. One of the paired light-receiving element module and light-emitting element module is mounted on a printed circuit board of a board unit, which is fixed to an end surface of a motor. After a code wheel is attached and fixed to the motor shaft along the axial direction of the motor shaft, a generally L-shaped module holder, which accommodates the other of the paired light-receiving element module and light-emitting element module, is mounted to the board unit. Thus, the light-emitting element and the light-receiving element are positioned such that these elements face each other via the optical modulation track portion of the code wheel.
    Type: Grant
    Filed: December 13, 2006
    Date of Patent: April 22, 2008
    Assignee: Mabuchi Motor Co. Ltd.
    Inventors: Kouhei Igarashi, Masayuki Iida
  • Publication number: 20080001106
    Abstract: An optical encoder device for a small-sized motor has a code wheel attached to a motor shaft which extends to the exterior of the motor through a bearing accommodated in a bearing-retaining section provided on an end bell of the motor, and a board on which a photosensor module is mounted such that an optical modulation track portion of the code wheel is positioned and disposed in a gap of the photosensor module. While a spacer is sandwiched between the end bell and the board, the motor, the spacer, and the board are fixed together by soldering a pair of motor terminals to a printed wiring portion of the board. The spacer has a generally U-shaped structure so as to allow fitting in position thereof from a direction orthogonal to the motor shaft.
    Type: Application
    Filed: September 26, 2005
    Publication date: January 3, 2008
    Inventors: Kouhei Igarashi, Toshihiro Kamiyoshihara
  • Publication number: 20070146171
    Abstract: A photosensor module is composed of a light-receiving element module accommodating a light-receiving element, and a light-emitting element module accommodating a light-emitting element, which modules are separate, paired components. One of the paired light-receiving element module and light-emitting element module is mounted on a printed circuit board of a board unit, which is fixed to an end surface of a motor. After a code wheel is attached and fixed to the motor shaft along the axial direction of the motor shaft, a generally L-shaped module holder, which accommodates the other of the paired light-receiving element module and light-emitting element module, is mounted to the board unit. Thus, the light-emitting element and the light-receiving element are positioned such that these elements face each other via the optical modulation track portion of the code wheel.
    Type: Application
    Filed: December 13, 2006
    Publication date: June 28, 2007
    Inventors: Kouhei Igarashi, Masayuki Iida
  • Patent number: 6409973
    Abstract: The exhaust gas purification device according to the present invention utilizes two NOx absorbents in order to remove NOx from the exhaust gas of an engine operated at a lean air-fuel ratio. The NOx absorbents are disposed, in series, in the exhaust passage of the engine and a nozzle for supplying a reducing agent is disposed in the exhaust passage at a position between the two NOx absorbents. Further, the device includes switching valves for changing the direction of the exhaust gas flow in the exhaust gas passage. When the switching valves are set to direct the exhaust gas flow to one direction, the exhaust gas first flows through one of the NOx absorbents (first NOx absorbent), and after passing through the first NOx absorbent, the reducing agent is supplied to the exhaust gas before it flows into the other NOx absorbent (second NOx absorbent). Thus, the first NOx absorbent absorbs NOx in the exhaust gas, and the NOx absorbed by the second NOabsorbent is released from the second NOx absorbent.
    Type: Grant
    Filed: September 5, 1995
    Date of Patent: June 25, 2002
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Toshifumi Takaoka, Kouhei Igarashi, Takaaki Itou
  • Patent number: 6345496
    Abstract: An exhaust manifold (7) of an engine (1) is connected to a three way (TW) catalyst (8a), and the TW catalyst (8a) is connected to an NH3 adsorbing and oxidizing (NH3-AO) catalyst (10a). The engine (1) performs the lean and the rich engine operations alternately and repeatedly. When the engine (1) performs the rich operation and thereby the exhaust gas air-fuel ratio of the exhaust gas flowing into the TW catalyst (8a) is made rich, NOx in the inflowing exhaust gas is converted to NH3 in the TW catalyst (8a). The NH3 is then adsorbed in the NH3-AO catalyst (10a). Next, when the engine (1) performs the lean operation and thereby the exhaust gas air-fuel ratio of the exhaust gas flowing into the TW catalyst (8a) is made lean, NOx in the exhausted gas passes through the TW catalyst (8a), and flows into the NH3-AO catalyst (10a). At this time, NH3 adsorbed in the catalyst (10a) is desorbed therefrom, and reduces the inflowing NOx.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: February 12, 2002
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Naohide Fuwa, Hiroshi Tanaka, Yukio Kinugasa, Takaaki Itou, Naoto Suzuki, Takehisa Yaegashi, Kouhei Igarashi, Kouichi Takeuchi
  • Patent number: 6133185
    Abstract: An exhaust gas purifying catalyst, for reducing nitrogen oxides and ammonia in an exhaust gas of an internal combustion engine, in an oxidizing atmosphere, is provided. The exhaust gas purifying catalyst comprises a first catalyst having zeolite carrying platinum and copper thereon. Preferably, the exhaust gas purifying catalyst further comprises a second catalyst having zeolite carrying copper thereon. Preferably, the second catalyst is arranged upstream of the first catalyst, with respect to the exhaust gas flow.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: October 17, 2000
    Assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Chuo Kenkyusho
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou, Naoto Suzuki, Takehisa Yaegashi, Takaaki Kanazawa, Takahiro Hayashi, Koji Yokota, Yasutaka Nagai
  • Patent number: 6119452
    Abstract: A three-way catalyst (8a) is connected to a first cylinder group 1a. The exhaust gas of the first cylinder group (1a), which has passed through the three-way catalyst (8a), and the exhaust gas of a second cylinder group (1b) are introduced to an exhaust gas purifying catalyst (14). The second cylinder group (1b) performs the lean operation. The first cylinder group (1a) performs the rich operation to synthesize NH.sub.3 from NO.sub.X in the exhaust gas of the first cylinder group (1a) in the three-way catalyst (8a). In the exhaust gas purifying catalyst (14), NO.sub.X in the exhaust gas of the second cylinder group 1b is purified by NH.sub.3 from the three-way catalyst (8a). The amount of HC flowing to the three-way catalyst (8a) is obtained. When the HC amount exceeds a predetermined amount, the first cylinder group 1a must perform the lean operation temporarily, to thereby maintain the excellent catalytic activity of the three-way catalyst (8a).
    Type: Grant
    Filed: May 13, 1998
    Date of Patent: September 19, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou, Naoto Suzuki, Takehisa Yaegashi, Toshiaki Tanaka, Naoto Miyoshi
  • Patent number: 6047542
    Abstract: An engine (1) has first and second cylinder groups (1a) and (1b). The first cylinder group (1a) is connected to a three way (TW) catalyst (8a). The second group (1b) and the TW catalyst (8a) are connected, via an interconnecting duct (13) to an NH.sub.3 adsorbing and oxidizing (NH.sub.3 -AO) catalyst (14a). The first group (1a) performs the rich operation, and the second group (1b) performs the lean operation. In the TW catalyst (8a), NO.sub.x exhausted from the first group (1a) is converted to NH.sub.3, and the NH.sub.3 reduces the NO.sub.x exhausted from the second group (1b) in the NH.sub.3 -AO catalyst (14a). A NO.sub.x occluding and reducing (NO.sub.x -OR) catalyst (11a) is arranged in the exhaust passage between the second group (1b) and the interconnecting duct (13), to thereby suppress the NO.sub.x amount flowing into the NH.sub.3 -AO catalyst (14a).
    Type: Grant
    Filed: June 29, 1998
    Date of Patent: April 11, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou, Naoto Suzuki, Takehisa Yaegashi, Kouichi Takeuchi
  • Patent number: 6032461
    Abstract: To provide an exhaust gas purifying system for an internal combustion engine capable of executing an optimal regenerative operation by predicting a temperature of an absorbent based on running state information.There are predicted the amount of nitrogen oxides (NO.sub.x) to be absorbed by an absorbent 125 incorporated in a catalyst 124 and the temperature of the absorbent, based on the running state information obtained from a car navigation system 141 or traffic information service receiver 142, and the regenerative operation schedule is determined based on the prediction. Thus, the regenerative operation is conducted at the timing where NO.sub.x has been duly absorbed by the absorbent and the absorbent temperature is lower than a predetermined temperature, so that the leakage of NO.sub.x into the exterior of a vehicle can be restrained.
    Type: Grant
    Filed: April 20, 1998
    Date of Patent: March 7, 2000
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou
  • Patent number: 5964088
    Abstract: A device for purifying the exhaust gas of an engine having a plurality of cylinders divided into first and second cylinder groups, the first and the second cylinder groups being connected to first and second exhaust passage, respectively, and performing a lean operation, comprises an NH.sub.3 synthesizing catalyst arranged in the first exhaust passage, and an exhaust gas purifying catalyst arranged in an interconnecting passage, which interconnects the first passage downstream of the NH.sub.3 synthesizing catalyst and the second exhaust passage, for purifying the inflowing NO.sub.X and NH.sub.3. An additional engine performing a rich operation is provided and the exhaust gas thereof is fed to the first exhaust gas passage upstream of the NH.sub.3 synthesizing catalyst to make the exhaust gas air-fuel ratio of the exhaust gas flowing into the NH.sub.3 synthesizing catalyst rich, to thereby synthesize NH.sub.3 therein. An amount of NH.sub.3 or NO.sub.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: October 12, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Takaaki Itou, Koichi Hoshi, Naoto Suzuki, Koichi Takeuchi, Takehisa Yaegashi, Kouhei Igarashi
  • Patent number: 5924406
    Abstract: An apparatus for controlling auxiliary equipment driven by an internal combustion engine, which can suppress the deterioration of a specific fuel consumption by controlling the auxiliary equipment based on running environment information provided from a car navigation system or the like. Namely, this apparatus predicts the future maximum output of the internal combustion engine and a running load thereof according to running environment information and vehicle information. Further, if the maximum output is larger than the running load, the auxiliary equipment (for example, a light and an air conditioner) are directly driven by the internal combustion engine. Moreover, surplus energy is stored in an energy storing device. When the maximum output is nearly equal to the running load and that the specific fuel consumption is deteriorated when driving the auxiliary equipments, they are driven by using the energy stored in the energy storing device.
    Type: Grant
    Filed: June 3, 1997
    Date of Patent: July 20, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou
  • Patent number: 5893385
    Abstract: According to the present invention, there is provided a liquid discharging device for discharging liquid stored on a bottom wall of an interior of a compressed natural gas tank of a vehicle, comprising a liquid discharging pipe for discharging the liquid from the compressed natural gas tank to an outside of the compressed natural gas tank. The liquid discharging pipe has an open end which is open into the interior of the compressed natural gas tank at a position adjacent to an inner face of the bottom wall of the compressed natural gas tank. Further, the liquid discharging device comprises a liquid discharging control valve arranged in the liquid discharging pipe to discharge the liquid due to the pressure of the natural gas when the liquid discharging control valve is opened.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: April 13, 1999
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kouhei Igarashi
  • Patent number: 5782087
    Abstract: An exhaust manifold of an engine is connected to a three way (TW) catalyst, and the TW catalyst is connected to an NH.sub.3 adsorbing and oxidizing (NH.sub.3 -AO) catalyst, such as the Cu-zeolite catalyst. The engine performs the lean and the rich operations alternately and repeatedly. When the engine performs the rich operation, the TW catalyst synthesizes NH.sub.3 from NO.sub.x in the inflowing exhaust gas, and the NH.sub.3 is then adsorbed in the NH.sub.3 -AO catalyst. Next, when the engine performs the lean operation, NO.sub.x passes through the TW catalyst, and the adsorbed NH.sub.3 is desorbed and reduces the inflowing NO.sub.x. When the rich operation is in process, or is to be started, the exhaust gas temperature flowing into the NH.sub.3 -AO catalyst is detected. If the temperature is equal to or higher than the upper threshold representing the rich endurance temperature, the lean or the stoichiometric operation is performed.
    Type: Grant
    Filed: November 6, 1996
    Date of Patent: July 21, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou, Naoto Suzuki, Takehisa Yaegashi, Toshiaki Tanaka
  • Patent number: 5783160
    Abstract: The method for purifying combustion exhaust gas according to the present invention utilizes a NH.sub.3 decomposing catalyst. The NH.sub.3 decomposing catalyst in the present invention is capable of converting substantially all of the NH.sub.3 in the combustion exhaust gas to N.sub.2 when the air-fuel ratio of the exhaust gas is lean and the temperature of the catalyst is within a predetermined optimum temperature range. Further, when the exhaust gas contains NO.sub.x in addition to NH.sub.3, the NH.sub.3 decomposing catalyst is capable of reducing the NO.sub.x in the optimum temperature range even though the air-fuel ratio of the exhaust gas is lean. In the present invention, the conditions of the exhaust gas containing NO.sub.x are adjusted before it is fed to the NH.sub.3 decomposing catalyst in such a manner that the temperature of the exhaust gas is within the optimum temperature range and the air-fuel ratio of the exhaust gas is lean. Further, NH.sub.
    Type: Grant
    Filed: January 24, 1996
    Date of Patent: July 21, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou, Toshifumi Takaoka, Michihiro Ohashi, Koji Yokota
  • Patent number: 5746052
    Abstract: In the present invention, the exhaust gas from the engine is divided into a first and a second branch exhaust passages after it passes through a three-way reducing and oxidizing catalyst, and the two branch exhaust passages merge into an exhaust gas outlet passage. In the first branch exhaust passage, an oxidizing catalyst is disposed, and in the exhaust gas outlet passage, a denitrating and oxidizing catalyst is disposed. NO.sub.x in the exhaust gas from the engine is all converted to N.sub.2 and NH.sub.3 by the three-way reducing and oxidizing catalyst and a part of the NH.sub.3 generated by the three-way catalyst flows into the first branch exhaust passage and is converted to NO.sub.x again by the oxidizing catalyst. The amount of NO.sub.x produced by the oxidizing catalyst and the amount of NO.sub.x flowing through the second branch exhaust passage is determined by the flow distribution ratio of the first and the second branch exhaust passages.
    Type: Grant
    Filed: September 8, 1995
    Date of Patent: May 5, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou, Takehisa Yaegashi, Toshifumi Takaoka
  • Patent number: 5740669
    Abstract: In the present invention, a NO.sub.x absorbent is used for removing the NO.sub.x in the exhaust gas. The NO.sub.x absorbent absorbs NO.sub.x in the exhaust gas when the air-fuel ratio of the exhaust gas is lean, and releases the absorbed NO.sub.x and reduces it to nitrogen when the air-fuel ratio of the exhaust gas is rich or stoichiometric. To prevent the NO.sub.x absorbent from being saturated with the absorbed NO.sub.x, the NO.sub.x absorbent must be regenerated periodically by causing the NO.sub.x in the absorbent to be released and reduced. However, it is found that when the regenerating process by supplying a rich air-fuel ratio exhaust gas to the NO.sub.x absorbent is carried out at high NO.sub.x absorbent temperature, a part of NO.sub.x flows out from the NO.sub.x absorbent at the beginning of the regenerating process without being reduced. In the present invention, this outflow of NO.sub.x is suppressed by, for example, carrying out the regenerating process only when the temperature of the NO.sub.
    Type: Grant
    Filed: November 16, 1995
    Date of Patent: April 21, 1998
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yukio Kinugasa, Kouhei Igarashi, Takaaki Itou, Toshifumi Takaoka