Patents Assigned to Unisia Jecs Corporation
  • Patent number: 7204433
    Abstract: A fuel injection valve has: a tubular body, a valve seat member, a valve body, a core tube, a bias spring, and an electromagnetic actuator. The core tube is press fitted into the tubular body. The core tube has a first end side opposing an absorption section of the valve body in such a manner as to form an axial gap interposed between the first end side of the core tube and the absorption section. The core tube has a second end side axially extending in the tubular body to a certain position on a way to the second end side of the tubular body. The axially extending second end side of the core tube has an outer periphery which is formed with a reduced diameter section for increasing an accuracy in positioning the core tube when the core tube is press fitted into the tubular body.
    Type: Grant
    Filed: October 12, 2004
    Date of Patent: April 17, 2007
    Assignee: Unisia Jecs Corporation
    Inventors: Takayuki Kobayashi, Hideo Kato
  • Patent number: 6905530
    Abstract: In a preliminary molding step 1, a metallic powder mixture 7 obtained by blending an iron-based metal powder 7a with graphite 7b such that the graphite is present in an amount of preferably not less than 0.1% by weight, more preferably not less than 0.3% by weight, is compacted into a preform 8 having a density of not less than 7.3 g/cm3. In a provisional sintering step 2, the preform 8 is provisionally sintered at a predetermined temperature to form a metallic powder-molded body 9 having a structure in which the graphite remains along a grain boundary of the metal powder. In a re-compaction step 3, the metallic powder-molded body 9 is re-compacted into a re-compacted body 10. In a re-sintering step 4, the re-compacted body 10 is re-sintered to obtain a sintered body 11. In a heat treatment step 5, the sintered body 11 is heat-treated to obtain a heat-treated sintered body 11.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: June 14, 2005
    Assignees: Unisia Jecs Corporation, Kawasaki Steel Corporation
    Inventors: Takashi Yoshimura, Hiroyuki Amma, Masashi Fujinaga, Mitsumasa Iijima, Yasuo Hatai, Takayuki Matsumoto, Satoshi Uenosono, Shigeru Unami
  • Patent number: 6868812
    Abstract: A valve timing control system for an internal combustion engine has: a drive force transmitter or a chain sprocket; a cam shaft; a housing, a vane rotor; an advanced angle chamber and a delayed angle chamber; an oil pressure conveyer; a protrusion shaft; a target plate; and a sensor. The protrusion shaft is formed on at least one of the vane rotor and the housing, and protrudes forward. The target plate is mounted on at least one of the vane rotor and the housing. The target plate is formed substantially flat through a press molding, and is press fitted to the protrusion shaft. The target plate has a plurality of detector protrusions and one index protrusion. The detector protrusion and the index protrusion are equal in width.
    Type: Grant
    Filed: November 6, 2001
    Date of Patent: March 22, 2005
    Assignee: Unisia Jecs Corporation
    Inventors: Masaharu Saito, Hideaki Nakamura, Katsuhiko Uchida
  • Patent number: 6863037
    Abstract: A controller that outputs control signals to an actuator of a variable valve timing mechanism is integrally equipped with a cam sensor that takes out from a camshaft signals for discriminating a cylinder corresponding to a reference piston position. The controller discriminates the cylinder corresponding to the reference piston position, computes a rotation phase of the camshaft relative to a crankshaft, and transmits the result of the cylinder discrimination process to an engine controller.
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: March 8, 2005
    Assignee: Unisia Jecs Corporation
    Inventors: Isamu Iizuka, Hirokazu Shimizu
  • Patent number: 6848404
    Abstract: An oil pressure control apparatus which includes a source of hydraulic pressure introducing the hydraulic pressure to a hydraulic actuator which is actuated by hydraulic pressure, a fluid passage which is connected between the source of hydraulic pressure and the hydraulic actuator for introducing and discharging hydraulic pressure from the source of hydraulic pressure to the actuator, a control valve which is disposed in the fluid passages for controlling the hydraulic pressure and a filter is disposed in a position that is between the actuator and the control valve. Thereby, the control valve is capable to be operated smoothly.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: February 1, 2005
    Assignee: Unisia Jecs Corporation
    Inventors: Akinobu Maeyama, Masanori Koda
  • Patent number: 6837694
    Abstract: A hydraulic pump unit for vehicle brake control system comprising a pump housing, a cylinder received in a receiving hole formed in the pump housing. The cylinder has a bottom portion and is provided at the bottom portion with an outlet valve. A plunger is slidingly received in the cylinder and defines a pump chamber in cooperation with the cylinder. An inlet valve provided on the plunger, an inlet passage formed in the pump housing. An opening of the inlet passage is provided in the receiving hole. An outlet passage formed in the pump housing, an opening of the outlet passage is provided in the receiving hole. A plug member for closing an opening of the receiving hole, the plug member is fixed to the bottom portion of the cylinder, and an orifice plate having a passage is arranged between the bottom portion and the plug member.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: January 4, 2005
    Assignee: Unisia Jecs Corporation
    Inventors: Takayuki Furuya, Nobuhiro Tamai
  • Patent number: 6832585
    Abstract: A valve timing control device includes a drive pulley 2 driven by a crankshaft of an engine, and a driven camshaft 1. The camshaft 1 has a cam 70 that serves to open and close an intake port 72. An engine valve 71 is spring-loaded by a valve spring 73, whereas the cam 70 opens or closes the engine valve 71 against the bias of the spring 73. Torque is transmittable between the drive pulley 2 and the camshaft 1, and a rotation angle adjusting mechanism 4 is provided therebetween. The rotation angle adjusting mechanism 4 has a movable operating member 11 being movable in a radial direction.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: December 21, 2004
    Assignee: UNISIA JECS Corporation
    Inventor: Masahiko Watanabe
  • Patent number: 6821408
    Abstract: A method and apparatus for anodizing a component. The component is placed in a container having first and second seal members that seal an annular surface of the component to be anodized. The first and second seal members, the annular surface of the component, and an inner surface of the container form a reaction chamber that holds a reaction medium therein. The reaction medium is supplied to the reaction chamber through a supply passage formed in the container. The reaction medium is drained from the reaction chamber through a drain passage formed in the container.
    Type: Grant
    Filed: January 15, 2002
    Date of Patent: November 23, 2004
    Assignee: Unisia Jecs Corporation
    Inventors: Masato Sasaki, Yuzuru Morioka, Sachiko Sugita, Masazumi Ishikawa
  • Patent number: 6820024
    Abstract: Source files are added in advance with data specification information necessary for conversion of the source files into a calibrating file, the source files are converted into a calibrating file, and calibration is performed based on the post-converted calibrating file.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: November 16, 2004
    Assignee: Unisia Jecs Corporation
    Inventor: Takafumi Fukumoto
  • Patent number: 6814311
    Abstract: A fuel injection valve for an internal combustion engine has a tubular metal case constructed of a magnetic material in and through which a fuel is to flow. The tubular metal case has one open end. A valve seat is tightly received in the open end of the tubular metal case. The valve seat has a fuel outlet formed therein. A valve element is axially movably received in the tubular metal case. The valve element is movable between a closed position wherein a valve body of the element closes the fuel outlet and an open position wherein the valve body opens the fuel outlet. An electromagnetic actuator is disposed about the tubular metal case to actuate the valve element to move between the closed and open positions. The tubular metal case is constructed of a ferritic stainless steel containing Titanium. An end portion of the tubular metal case to which a valve seat is fixed has a wall thickness which ranges from approximately 0.1 mm to 0.9 mm.
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: November 9, 2004
    Assignee: Unisia Jecs Corporation
    Inventors: Nobuaki Kobayashi, Yuichi Uchiyama, Hideo Kato, Hiroshi Okada
  • Patent number: 6814851
    Abstract: A method and apparatus for anodizing a component. The component is placed in a container having a supply port, a drain port and a supply passage. The supply passage faced on a surface of the component to be anodized. A reaction medium is supplied from the supply port to the drain port. An electric current is supplied from an electrode provided on the drain port side of the surface. The apparatus prevents any hydrogen gas created by the electrode from recirculating to the surface of the component.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: November 9, 2004
    Assignee: Unisia Jecs Corporation
    Inventors: Masato Sasaki, Masazumi Ishikawa, Sachiko Sugita
  • Publication number: 20040216996
    Abstract: A method and apparatus for anodizing a component. The component is placed in a container having first and second seal members that seal an annular surface of the component to be anodized. The first and second seal members, the annular surface of the component, and an inner surface of the container form a reaction chamber that holds a reaction medium therein. The reaction medium is supplied to the reaction chamber through a supply passage formed in the container. The reaction medium is drained from the reaction chamber through a drain passage formed in the container.
    Type: Application
    Filed: June 4, 2004
    Publication date: November 4, 2004
    Applicant: UNISIA JECS CORPORATION
    Inventors: Masato Sasaki, Yuzuru Morioka, Sachiko Sugita, Masazumi Ishikawa
  • Publication number: 20040216708
    Abstract: In an internal combustion engine equipped with a variable valve operating mechanism that performs a valve timing control and a valve lift amount control of at least one of an intake valve and an exhaust valve, target values of the valve timing and the valve lift amount set based on an engine operating condition are limited by a limit value to limit a control range of one of the valve timing and the valve lift amount in accordance with a control state of the other of the valve timing and the valve lift amount, so that the valve timing and the valve lift amount are controlled based on the respective target values one of which has been limited as above.
    Type: Application
    Filed: May 24, 2004
    Publication date: November 4, 2004
    Applicant: UNISIA JECS CORPORATION
    Inventor: Kenichi Machida
  • Patent number: 6810872
    Abstract: A blister pack for a inhalant medicator has a plurality of medical powder storage chambers spaced apart from each other in a circumferential direction. The inhalant medicator includes a pricking tool with a pair of parallel pins that prick inflow and outflow holes in one of the medical powder storage chambers during a preliminary operation of inhalant medication. The inflow and outflow holes are spaced apart from each other by a predetermined distance in a direction parallel to a lid panel of the blister pack to produce turbulent airflow within the medical powder storage chamber during inhalation during which the medical powder is inhaled by a patient's breathing. The medical powder storage chambers are dimensioned and designed to properly regulate or control properties of the airflow passing through the medical storage chamber, to ensure the airflow is suitable for the medical powder storage chamber.
    Type: Grant
    Filed: November 2, 2000
    Date of Patent: November 2, 2004
    Assignees: Unisia Jecs Corporation, Dott Limited Company
    Inventors: Hisatomo Ohki, Shigemi Nakamura, Kazunori Ishizeki, Yoshiyuki Yazawa, Akira Yanagawa
  • Patent number: 6811104
    Abstract: A fuel injection valve has: a tubular body, a valve seat member, a valve body, a core tube, a bias spring, and an electromagnetic actuator. The core tube is press fitted into the tubular body. The core tube has a first end side opposing an absorption section of the valve body in such a manner as to form an axial gap interposed between the first end side of the core tube and the absorption section. The core tube has a second end side axially extending in the tubular body to a certain position on a way to the second end side of the tubular body. The axially extending second end side of the core tube has an outer periphery which is formed with a reduced diameter section for increasing an accuracy in positioning the core tube when the core tube is press fitted into the tubular body.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: November 2, 2004
    Assignee: Unisia Jecs Corporation
    Inventors: Takayuki Kobayashi, Hideo Kato
  • Publication number: 20040207254
    Abstract: A support structure for supporting a hydraulic unit of a brake system on a vehicle body is provided. The hydraulic unit has a housing and a motor attached to a lateral side surface of the housing. The hydraulic unit has a predetermined support width and is supported at two or more support positions on a vehicle body by way of resilient members. The support structure comprises a support member for supporting the hydraulic unit in such a manner as to allow a gravitational axis of the hydraulic unit to be disposed within the support width when viewed in a side elevation. A hydraulic unit arrangement and a method for supporting the hydraulic unit are also provided.
    Type: Application
    Filed: May 12, 2004
    Publication date: October 21, 2004
    Applicant: UNISIA JECS CORPORATION
    Inventor: Chiharu Nakazawa
  • Patent number: 6805106
    Abstract: In a fuel-injection system with a pressure regulator disposed in the middle of a fuel supply line and located upstream of a fuel injector for regulating the pressure of fuel flowing through the fuel supply line and for returning surplus fuel via the pressure regulator into a fuel tank, a reflux pipe arrangement is located downstream of the fuel injector and connected at one end to the downstream end of the fuel supply line and connected at the other end to the fuel tank. A reflux control device is disposed in the middle of the reflux pipe arrangement for controlling a flow rate of the fuel flowing through the reflux pipe arrangement. The reflux control device is comprised of a reflux control valve or a fluid-flow restriction orifice member.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: October 19, 2004
    Assignee: Unisia Jecs Corporation
    Inventors: Masato Kumagai, Hiroshi Yamada, Kazuyoshi Mori
  • Patent number: 6805309
    Abstract: A fuel injector including a tubular casing having an axial fuel passage. Disposed within the fuel passage are a valve seat element, a core cylinder, and a valve element axially moveably disposed therebetween and opposed to the core cylinder with an axial air gap. An electromagnetic actuator cooperates with the casing, the valve element and the core cylinder to form a magnetic field forcing the valve element to the open position against a spring between the valve element and the core cylinder upon being energized. The casing includes a reluctance portion producing an increased magnetic reluctance and allowing the magnetic field to extend to the valve element and the core cylinder through the air gap. The reluctance portion has a reduced radial thickness and an axial length extending over the air gap.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: October 19, 2004
    Assignee: Unisia Jecs Corporation
    Inventors: Nobuaki Kobayashi, Hideo Kato, Hiroshi Okada
  • Patent number: 6805096
    Abstract: Cylinder judgment signals are output from cam sensors at every uneven crank angle interval. The number of cylinder judgment signals output per cam sensor during a time period between a previous output and a present output of cylinder judgment signals from the other cam sensor, is counted up, to judge a specific cylinder based on the number of outputs. As a result, cylinders other than the specific cylinder are judged based on the judgment result and the cylinder judgment signals. Simultaneously, a time period from the previous cylinder judgment to the present cylinder judgment is calculated, to judge erroneous detection of cylinder judgment signal due to noise based on a ratio between a previous calculation value and a present calculation value of the time period. When the erroneous detection is judged, the cylinder judgment result based on the cylinder judgment signals is canceled.
    Type: Grant
    Filed: June 18, 2002
    Date of Patent: October 19, 2004
    Assignee: Unisia Jecs Corporation
    Inventor: Isamu Iizuka
  • Publication number: 20040182343
    Abstract: A valve timing control device includes a drive pulley driven by a crankshaft of an engine, and a driven camshaft. The camshaft has a cam that serves to open and close an intake port. An engine valve is spring-loaded by a valve spring, whereas the cam opens or closes the engine valve against the bias of the spring. Torque is transmittable between the drive pulley and the camshaft, and a rotation angle adjusting mechanism is provided therebetween. The rotation angle adjusting mechanism has a movable operating member being movable in a radial direction.
    Type: Application
    Filed: January 28, 2004
    Publication date: September 23, 2004
    Applicant: UNISIA JECS CORPORATION
    Inventor: Masahiko Watanabe