Patents by Inventor Kazuma Matsui

Kazuma Matsui 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: 4492515
    Abstract: A regenerative pump has a pump housing and a disc-like impeller mounted in the pump housing for axial movement therein and rotated by an electric motor. The impeller is provided with circumferential rows of vane grooves formed in the end faces of the impeller adjacent to the outer periphery thereof. The pump housing has inner surfaces closely spaced from the impeller end faces. Circumferentially continuous annular projections or circumferentially discontinuous projections are formed on either the impeller end faces or the housing inner surfaces to keep at least the major surface areas of the impeller end faces closely spaced from the mating inner surfaces of the housing. Axial passages extend through the impeller to equalize fluid pressures on the opposite impeller end faces.
    Type: Grant
    Filed: May 12, 1982
    Date of Patent: January 8, 1985
    Assignee: Nippondenso Co., Ltd.
    Inventors: Kiyohiko Watanabe, Kazuma Matsui, Yoshiyuki Hattori, Toshihiro Takei, Toshiaki Nakamura, Shunsaku Ohnishi
  • Patent number: 4481424
    Abstract: A driving mechanism comprises an electric motor assembly having an output shaft drivingly connected to a vehicle accessory device and arranged to be connected to an internal combustion engine, the motor assembly being designed to generate a high output torque on the output shaft in its first activated condition and to generate a low output torque on the output shaft in its second activated condition, an electrically operated actuator for connecting the output shaft to the engine upon energization thereof and disconnecting the output shaft from the engine upon deenergization thereof, and an electric control circuit for energizing the actuator and the motor assembly to start the engine under the first activated condition of the motor assembly, for deenergizing the actuator after start of the engine, for switching over the motor assembly to its second activated condition from its first activated condition when the accessory device is unloaded and for switching over the motor assembly to its first activated condi
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: November 6, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiyuki Hattori, Kazuma Matsui
  • Patent number: 4478550
    Abstract: A pump apparatus has a regenerative pump and a motor for driving the regenerative pump. A substantially annular flow passage is formed in the pump housing of the regenerative pump and communicated with a discharge port and a suction port. An impeller is rotatably housed in the pump housing. A plurality of radial vane grooves are formed circumferentially spaced in the outer peripheral portion of each surface of the impeller. A recess is formed in the portion of one of side surfaces of the flow passage aligned axially with the discharge port formed in the other side face of the flow passage.
    Type: Grant
    Filed: April 21, 1982
    Date of Patent: October 23, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Kiyohiko Watanabe, Kazuma Matsui, Yoshiyuki Hattori, Toshihiro Takei, Toshiaki Nakamura, Shunsaku Ohnishi
  • Patent number: 4478595
    Abstract: In combination with a belt tensioner which includes an idler pulley to be radially displaced under control of an actuator for applying an tensioning force on an endless belt of the drive system for the vehicle accessories, an electric control apparatus comprises a microcomputer for calculating the actual tensioning force on the belt related to radial displacement of the idler pulley and for calculating drive power necessary for driving the vehicle accessories to calculate total drive torque of the vehicle accessories in relation to rotational speed of a prime mover of the vehicle. The microcomputer also calculates an optimum tensioning force based on a desired relationship between the optimum tensioning force and the total drive torque in consideration with the maximum efficiency of power transmission of the belt such that it generates a control signal when the calculated actual tensioning force is different from the calculated optimum tensioning force.
    Type: Grant
    Filed: March 25, 1982
    Date of Patent: October 23, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Hideyuki Hayakawa, Kazuma Matsui, Yoshiyuki Hattori, Hiroji Kinbara
  • Patent number: 4476419
    Abstract: A windshield wiper control device for use on a vehicle includes a light-emitting unit mounted on the vehicle outside of a compartment for emitting a ray of infrared radiation, a photodetector unit mounted on the vehicle within the compartment and having a slit plate for producing an image of a striped pattern with bright and dark areas in response to exposure to the ray of electromagnetic radiation through the windshield and an array of photodetectors for sensing the bright and dark areas of the striped image and generating signals indicative of the bright and dark areas, and an arithmetic circuit arrangement for computing a contrast of the bright and dark areas based on the signals from the photodetectors and controlling the speed and/or period of operation of the windshield wiper based on the computed contrast.
    Type: Grant
    Filed: May 31, 1983
    Date of Patent: October 9, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiaki Fukatsu, Takashi Kurahashi, Kazuma Matsui, Hiroki Ito
  • Patent number: 4466521
    Abstract: An electric control system for an automobile transmission includes an endless transmission member running on a pair of V-shaped pulley units, the mutual distances of the conical sheaves of which are hydraulically adjustable to transmit an output torque of an engine to a driven apparatus. The electric control system is arranged to determine an optimum fluid pressure in relation to the actual output torque of the engine and to determine an optimum transmission ratio for low fuel consumption in relation to the actual output power of the engine. The control system produces a first electric control signal indicative of the difference between the optimum fluid pressure and the actual fluid pressure in one of actuators for the respective pulley units and produces a second electric control signal indicative of the difference between the optimum and actual transmission ratios.
    Type: Grant
    Filed: November 24, 1981
    Date of Patent: August 21, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiyuki Hattori, Kazuma Matsui, Toshihiro Takei, Hideyuki Hayakawa, Takahiro Goshima
  • Patent number: 4457742
    Abstract: A torque transmission belt means comprises a metallic ring which extends around a driving pulley and a driven pulley and a plurality of blocks made of hard material, which are linked up by the ring so as to be shiftably engaged therewith. Each block is provided with a concave portion in the front surface or the rear surface in the moving direction of the ring and an elastic member is fixed to the front surface or the rear surface of a back plate portion of each block, which forms a bottom of the concave portion so that each elastic member is contacted with the back plate portion of the adjacent block. Since each block is contacted with the adjacent blocks through the elastic members, the torque transmission belt means silently operates.
    Type: Grant
    Filed: May 8, 1981
    Date of Patent: July 3, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiyuki Hattori, Kazuma Matsui, Hiroji Kinbara
  • Patent number: 4451213
    Abstract: An electrically operated fuel pump device comprises a regenerative pump component and an electric motor component operatively connected to the regenerative pump component to actuate the same. The regenerative pump component includes a pump casing having spaced inner surfaces thereof cooperating with each other to define therebetween a pump chamber. An impeller is disposed within the pump chamber rotatably and axially movably. Clearances are defined between axial end faces of the impeller and the inner surfaces of the pump casing, respectively. Liquid fuel increased in pressure to a discharge pressure by the rotation of the impeller is introduced into the clearances to act on the axial end faces of the impeller so as to minimize the direct contact of the axial end faces of the impeller with the respective inner surfaces of the pump casing.
    Type: Grant
    Filed: March 29, 1982
    Date of Patent: May 29, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Toshihiro Takei, Kazuma Matsui, Yoshiyuki Hattori, Kiyohiko Watanabe, Toshiaki Nakamura, Shunsaku Ohnishi
  • Patent number: 4445821
    Abstract: A fuel pump apparatus has an electric motor and a regenerative pump having a pump housing and an impeller rotated by the motor shaft journalled by a bearing to the pump housing. The impeller is operative to produce in the pump housing a fluid pressure which is unbalanced in the circumferential direction of the impeller and forms circumferentially unbalanced radially inward forces the resultant force of which is applied through the impeller to a first side of the peripheral surface of the shaft. The discharge port of the pump is open to the interior space within the motor.
    Type: Grant
    Filed: April 26, 1982
    Date of Patent: May 1, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Kiyohiko Watanabe, Kazuma Matsui, Yoshiyuki Hattori, Toshihiro Takei, Toshiaki Nakamura, Shunsaku Ohnishi
  • Patent number: 4433965
    Abstract: A torque transmission belt means comprises a ring having excellent bending and tensile strength which is extended around pulleys positioned in the driving side and the driven side and a series of blocks composed of main blocks made of non-compressive material having high strength and secondary blocks made of elastic material, which are alternately arranged along the ring so as to be shiftably engaged therewith.
    Type: Grant
    Filed: February 23, 1981
    Date of Patent: February 28, 1984
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiyuki Hattori, Kazuma Matsui, Hiroji Kinbara
  • Patent number: 4406644
    Abstract: A torque transmission system has driving and driven pulley units around which an endless V-belt extends. Each pulley unit has a stationary pulley part rotatable with a shaft and a movable pulley part disposed to define with the stationary pulley part a circumferentially continuous groove for receiving the V-belt. The movable pulley parts of the pulley units are axially resiliently biased so that the radii of the circle along which the V-belt engages the driving and driven pulley units are varied to change the speed-change ratio of the transmission system. The movable pulley part of the driven pulley unit is axially shifted by the action of fly weights held between a stationary plate fixed to the shaft and a holder fixed to the movable pulley part.
    Type: Grant
    Filed: January 8, 1981
    Date of Patent: September 27, 1983
    Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Hiroji Kinbara, Yoshiyuki Hattori, Kazuma Matsui, Hideyuki Hayakawa, Masaaki Takizawa, Masaru Tamura, Yasunobu Jufuku
  • Patent number: 4403910
    Abstract: A regenerative pump apparatus has a housing and a substantially disc-shaped impeller rotatably housed by the housing. Circumferential rows of radial vane grooves are formed in the outer peripheral portions of both side surfaces of the impeller. Each circumferential row includes first vane grooves of an axial depth equal to or greater than a half of the impeller thickness and second vane grooves of an axial depth smaller than a half of the impeller thickness. The first and second vane grooves are arranged alternatingly in the circumferential direction in each row, such that the first vane grooves and the second vane grooves in one row are axially aligned with the second vane grooves and the first vane grooves in the other row.
    Type: Grant
    Filed: April 27, 1982
    Date of Patent: September 13, 1983
    Assignee: Nippondenso Co., Ltd.
    Inventors: Kiyohiko Watanabe, Kazuma Matsui, Yoshiyuki Hattori, Toshihiro Takei, Toshiaki Nakamura, Shunaku Ohnishi
  • Patent number: 4361927
    Abstract: A device for preventing the vibration of a windshield wiper including a weight having two ends each secured to one of opposite ends of a pin extending through the end of a holder and separated from each other a suitable distance for the holder and the weight to move relative to each other between the two ends of the pin. The device is mounted on an auxiliary support member of a wiper blade for avoiding the wiper blade being separated from the surface of the windshield by the pressure of air when the vehicle travels at high speed.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: December 7, 1982
    Assignee: Kazuma Matsui
    Inventors: Kazuma Matsui, Takashi Kurahashi, Masahiko Suzuki, Kiyoshi Kawaguchi
  • Patent number: 4360353
    Abstract: A torque transmission system has driving and driven pulley units drivingly connected by an endless V-belt. Each of the driving and driven pulley units includes a stationary pulley rotatable with a shaft and a movable pulley disposed to define with the stationary pulley a circumferential continuous groove for receiving the V-belt. The movable pulleys of the driving and driven pulley units are axially resiliently biased so that the radii of the circles along which the V-belt engages the driving and driven pulley units are varied to change the speed-change ratio of the transmission system. The movable pulley of the driven pulley unit is axially shifted by fly weights. The driving and driven pulley units are provided with cam mechanisms each comprising a cam member and a follower member. When the load on the driven pulley unit is suddenly varied, the cam mechanisms are operative to keep constant the rotational speed of the driven pulley unit irrespective of variations in the load on the driven pulley unit.
    Type: Grant
    Filed: April 15, 1980
    Date of Patent: November 23, 1982
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiyuki Hattori, Kazuma Matsui, Hiroji Kinbara
  • Patent number: 4344338
    Abstract: A pressurized fluid-operated power transmission device, is typically shown being shaft driven from an automotive engine as the drive for the compressor of a cooler and a fan is provided with a centrifugal governor and valving for limiting output rotational speed of the power transmission device. In one embodiment a noise-preventing back-flow check valve is provided.
    Type: Grant
    Filed: August 30, 1979
    Date of Patent: August 17, 1982
    Assignee: Nippon Soken, Inc.
    Inventors: Yoshiyuki Hattori, Kazuma Matsui, Hiroji Kinbara
  • Patent number: 4338081
    Abstract: A torque transmission belt means which is extended between a driving pulley and a driven pulley for transmitting a driving force from the driving pulley to the driven pulley.The torque transmission belt means comprises a plurality of ring-shaped metallic strips which are superimposed on each other, and two kinds of blocks which are arranged along the metallic strips so as to be shiftably engaged therewith.Only one kind of blocks are contacted with said pulleys and the other kind of blocks are bevelled on opposed surfaces facing to the direction of the movement so that they can tilt with respect to one kind of blocks when they are entrained around the pulleys.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: July 6, 1982
    Assignee: Nippondenso Co., Ltd.
    Inventors: Yoshiyuki Hattori, Kazuma Matsui, Hiroji Kinbara
  • Patent number: 4295456
    Abstract: An exhaust-gas-recirculation system for use in diesel engines, having a valve member adapted to control the flow rate of the exhaust gas recirculated from the exhaust pipe to the intake pipe of the diesel engine. The exhaust-gas-recirculation system has a fly-weight rotatable in synchronization with the engine to produce a centrifugal force, a governor sleeve displaceable in response to a thrust thereon given by the fly-weight, a control spring counteracting the thrust on the governor sleeve and having a spring load changeable in response to the change in the amount of depression of an accelerator pedal, and an actuator operative in response to the displacement of the governor sleeve to actuate the valve member.
    Type: Grant
    Filed: November 8, 1979
    Date of Patent: October 20, 1981
    Assignees: Nippon Soken, Inc., Toyota Jidosha Kogyo Kabushiki Kaisha
    Inventors: Etsuji Nomura, Kazuma Matsui, Toshikuni Miyazaki, Hiroshi Sami, Tatehito Ueda
  • Patent number: 4279864
    Abstract: A monolithic catalyst converter comprises a monolithic catalyst retaining catalyst metal, a cylindrical metallic container receiving the catalyst therein, a radial shock absorbing member disposed in a space between the catalyst and the container, an annular metallic plate disposed in each of axially end surfaces of the catalyst, a retaining member fixed to an inner wall of the container so as to be opposed to the annular metallic plate, an axial shock absorbing member disposed between the annular metallic plate and the retaining member and at least one annular sealing member composed of a compact body obtained by compressing metallic fine wire fabric or ceramic fibers, which is disposed in the space under pressure. By disposing the annular sealing member, unpurified exhaust gas is prevented from flowing out of the space.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: July 21, 1981
    Assignee: Nippon Soken, Inc.
    Inventors: Akio Nara, Shigeru Takagi, Kazuma Matsui
  • Patent number: 3963445
    Abstract: A device comprising exhaust leak preventing means made of a flexible material and mounted between a wall of a container and a catalyst element of a honeycomb structure disposed in the container to prevent leak of exhausts from an internal combustion engine mounted on a motor vehicle or the like through a gap between the container wall and the catalyst element before the exhausts are purified. Support means made of pliable metal may be used for holding the exhaust leak preventing means in place and keeping the latter from being dislodged from its position when the container is subjected to forces of impact or vibration.
    Type: Grant
    Filed: August 3, 1973
    Date of Patent: June 15, 1976
    Assignees: Nippondenso Co., Ltd., Nippon Soken, Inc.
    Inventors: Toshihiko Koyama, Masahiro Nanri, Kazuma Matsui, Shigeo Hoshino
  • Patent number: 3938959
    Abstract: A catalyst-type exhaust gas purifying device utilizing a monolithic catalyzing element defining a plurality of exhaust gas passages therein. The catalyzing element is disposed within a cylindrical housing. Heat insulating spaces are provided by at least one circumferential row of bores disposed near the outer periphery of said catalyzing element and closed at the opposite ends.
    Type: Grant
    Filed: October 12, 1973
    Date of Patent: February 17, 1976
    Assignee: Nippon Soken, Inc.
    Inventors: Kazuma Matsui, Shigeo Hoshino, Sigeru Kamiya