Patents Assigned to Nissan Motor Company, Ltd.
  • Patent number: 5366026
    Abstract: In an impact type clamping apparatus including a motor unit for generating a pulsatory driving torque, a main spindle driven by said pulsatory driving torque to rotate a fastening member, a detecting unit for detecting a pulsatory torque applied to the main spindle, a calculating circuit for calculating a clamping force in accordance with a peak value of the pulsatory torque, and a control unit for stopping the operation of said motor unit when the calculated clamping force exceeds a desired clamping force, said clamping force is calculated not only from the peak value of the pulsatory torque but also from an increasing coefficient which represents a relationship between the peak value of the pulsatory torque and an increment of the clamping force.
    Type: Grant
    Filed: August 27, 1993
    Date of Patent: November 22, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Junichi Maruyama, Teruo Fukumura, Toru Takeuchi
  • Patent number: 5365445
    Abstract: In an engine power trouble detecting apparatus, an abnormal condition occurring in power or torque of an engine of a vehicle is detectable, The detecting apparatus comprises: a first unit for predicting a power value derived from the engine of the vehicle driven under normal state based upon at least a revolution value of the engine and also an air intake amount thereof; a second unit for calculating an actual power value of the engine based upon at least a power value produced from a power shaft of a manual power transmission system; and also a third unit for comparing the predicted power value with the calculated actual power value so as to detect the abnormal condition.
    Type: Grant
    Filed: August 7, 1991
    Date of Patent: November 15, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Satoshi Takizawa
  • Patent number: 5360080
    Abstract: The vehicle vibration control system comprises at least two spring constant adjustable engine mounting devices, an engine speed sensor, an engine vibration load sensor, and a controller. The controller controllably adjusts the dynamic spring constants of the engine mounting devices with reference to a stored table and on the basis of detected engine speed and engine load, to cancel vibration transmitted from an engine to the vehicle body via the two engine mounting devices. In the table, theoretically optimum load ratios and phase differences between the two engine mounting devices are listed on the basis of empirical transfer functions between the engine mounting devices and the vehicle body.
    Type: Grant
    Filed: August 22, 1991
    Date of Patent: November 1, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Ichiro Yamazaki
  • Patent number: 5355629
    Abstract: A door for a vehicle is assembled by joining three modules together to facilitate the assembly process. The three modules are an outer module including an outer panel, a window regulator module including a window pane and a window regulator, and an inner module including an interior member. The window regulator module is preliminarily assembled as an independent unit, so that it is easy to adjust the open and closed positions and the movement of the window pane. These modules are joined by fastening means extending along the direction of the thickness of the door, so that the assembly operation is made easier.
    Type: Grant
    Filed: December 23, 1992
    Date of Patent: October 18, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Koichi Kimura, Kenichi Hirooka, Hiroshi Tsuchiya, Akito Tozuka, Shuji Yamagata, Kiyoto Matsuzaki, Kensuke Uchida, Toshiaki Shiraiwa, Sumio Inami, Eiji Murakami, Tetsuji Nasu, Takayuki Sano
  • Patent number: 5357435
    Abstract: A traction control system for an automotive vehicle comprises, a brake fluid pressure control actuator associated with at least driven wheels for reducing traction created through the driven wheels, and sensors for monitoring an acceleration-slip state of at least one of the driven wheels. A recovery control unit is arranged for deriving a degree of turn of the vehicle, and for deriving a rate of change in the vehicle turning degree. The recovery control unit is responsive to the change-rate in the turning degree during an acceleration-slip control, for controlling traction in a transient state shifting from turning to straight-ahead driving, in such a manner as to increase a recovery amount of driving torque caused by the driven wheel as the turning degree is weakened.
    Type: Grant
    Filed: December 28, 1992
    Date of Patent: October 18, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Sota Yasuda
  • Patent number: 5355676
    Abstract: A hydraulic pressure supply apparatus includes a variable displacement pump which is controlled to change its discharge flow rate and pressure in accordance with a condition of a load side. The pump is communicated with the load side through a conduit to which an accumulator is communicated through a proportional pressure reducing valve controlled so that its regulating pressure is higher than the pressure required in the load side and is lower than a target discharge pressure of the pump. Furthermore, when the pressure in the conduit is lower than the regulating pressure of the valve, the valve is opened and regulates the pressure in the conduit by allowing higher pressure flow from the accumulator.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: October 18, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Iwane Inokuchi
  • Patent number: 5355074
    Abstract: A gas turbine generator unit which is small-sized to be portable. The generator unit comprises a generator directly driven by a gas turbine. The rotatable shaft of the generator is coaxially connected with the rotor shaft of the gas turbine engine. An air filter box having an air filter element is disposed in a manner that the extension of the axis of the generator rotatable shaft passes through the air filter box. The air filter box is located on the opposite side of the gas turbine compressor with respect to the generator. Additionally, an intake silencer for reducing intake air noise is disposed fluidly connect the air filter box and the air intake port of the compressor. The intake silencer is located to extend generally parallel with the axis of the generator rotatable shaft.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: October 11, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Norio Nakano
  • Patent number: 5351574
    Abstract: A damping mass is housed in a rolling chamber formed in a flywheel body, and executes a pendulum motion in a radial direction according to torque fluctuations. If md is the mass of the damping mass, Id is tile moment of inertia of the damping mass, rd is the radius of tile damping mass, n is the order of torque fluctuations of a rotating drive mechanism, R is the distance from the center of rotation of the body to the center of the pendulum motion of the damping mass, and L is the distance from the center of the pendulum motion of the damping mass to the center of gravity of same, the actual ratio R/L is set larger than a value Ro/Lo obtained from the theoretical relation Ro/Lo=n.sup.2. [1+{Id/(md.multidot.rd.sup.2)}] to reduce rotational fluctuations. In this way, the effect of manufacturing defects and dimensional variations due to wear on rotational fluctuations is reduced.
    Type: Grant
    Filed: June 7, 1993
    Date of Patent: October 4, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Moriji Hiraishi, Ichiro Yamazaki
  • Patent number: 5349826
    Abstract: An air conditioning apparatus for an automotive vehicle comprises: a compressor (101) driven by an engine (101) for compressing a refrigerant; an evaporator (103) for evaporating the refrigerant compressed by the compressor; engine speed commanding section (104) for outputting a first command signal to drive the engine at a first engine idle speed when the compressor is not actuated and outputting a second command signal to drive the engine at a second engine idle speed higher than the first engine idle speed when the compressor is actuated; an after-evaporator temperature sensor (105) for detecting air temperature Immediately after the evaporator; an external air temperature sensor (106) for detecting external air temperature; and an inhibiting section (107) for inhibiting the engine speed commanding section from outputting the second command signal, when after-evaporator temperature is lower than a predetermined temperature and further external air temperature is lower than another predetermined temperature
    Type: Grant
    Filed: September 2, 1993
    Date of Patent: September 27, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Nobuyuki Kawai, Ikutaro Noji, Makoto Fukubayashi
  • Patent number: 5301368
    Abstract: An operation control system includes a GPS receiver unit and a radio telephone unit. The GPS receiver unit includes a GPS antenna and a GPS signal receiver circuit connected thereto. The radio telephone unit includes a telephone antenna and a transmitter circuit connected thereto. The transmitter circuit transmits a call channel signal through the telephone antenna during the radio telephone unit being in an ON-CALL MODE and a control channel signal during an OFF-CALL MODE. The system is designed to set the transmitter circuit operative and the GPS signal receiver circuit inoperative during the ON-CALL MODE. On the other hand, the system allows alternate operations of the transmitter circuit and the GPS signal receiver circuit during the OFF-CALL MODE.
    Type: Grant
    Filed: October 26, 1990
    Date of Patent: April 5, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Toru Hirata
  • Patent number: 5294871
    Abstract: A control system for an electric vehicle comprises a motor speed detector and a sensor for detecting an accelerator angle and outputting a motor speed error command based on the difference between motor speed and a speed required by the present accelerator angle. A motor speed command is generated based on the error command and the detected motor speed. A feedback control portion outputs a torque command based on the motor speed command and the detected motor speed and the driving force of the motor is controlled based on the torque command.
    Type: Grant
    Filed: August 10, 1992
    Date of Patent: March 15, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Takashi Imaseki
  • Patent number: 5293160
    Abstract: A keyless lock system for a vehicle includes a card for transmitting a radio signal, at least one onboard antenna for receiving the radio signal, and a control unit for allowing and preventing keyless lock and unlock operations in dependence on the existence or nonexistence of the card in a predetermined area near the antenna. The control unit monitors the position of of at least one monitored door, and produces a card warning signal each time the monitored door is closed if the card is absent in the vehicle.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: March 8, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Tomotaka Kurozu, Mikio Takeuchi
  • Patent number: 5293427
    Abstract: The invention detects the position of an eye in image of a driver's face quickly and with high reliability, even if the density of the driver's face image is not uniform on the right and left sides due to direct sunlight. Only one eye detection area is obtained on the dark side of the face image when the density of the face image is not uniform on the right and left sides. One eye window is detected in the one eye detection area, and an iris center is detected within the eye window to discriminate an inattentive driver who is dozing.
    Type: Grant
    Filed: December 11, 1991
    Date of Patent: March 8, 1994
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Hiroshi Ueno, Kazuhiko Yoshida
  • Patent number: 5286701
    Abstract: A catalyst for hydrazinolysis having high catalytic activity and long life concurrently with high thermal resistance is disclosed. The catalyst is composed of an alumina support having a substantially extended specific surface area and iridium being substantially supported thereon. The alumina support is prepared by the steps of adding aluminum alkoxide into hexyleneglycol (2-methyl-2, 4-pentanediol), heating at temperatures between 100.degree. and 200.degree. C. to form a sol, hydrolyzing the sol to a gel, and drying and calcining the gel.
    Type: Grant
    Filed: April 30, 1992
    Date of Patent: February 15, 1994
    Assignees: Agency of Industrial Science and Technology, Nissan Motor Company, Ltd.
    Inventors: Fujio Mizukami, Tsuneji Sano, Koji Masuda
  • Patent number: 5266358
    Abstract: The disclosure relates to a metal oxide film formed on a glass substrate by a sol-gel method using a solution of at least one metal alkoxide or acetylacetonate. Water which is in the amount ranging from 50 to 400 mol % of the at least one metal alkoxide or acetylacetonate, an organic solvent and a catalyst are added to the solution, thereby to form a first sol. To afford water repellency to the oxide film, a fluoroalkylsilane in the amount more than 0.30 mol % of and less than 3.0 mol % of the at least one metal alkoxide or acetylacetonate, or an alkylsilane compound in the amount more than 4.0 mol % of and less than 20 mol % of the at least one metal alkoxide or acetylacetonate, is added to the first sol, thereby forming a second sol. The concentration of the at least one metal alkoxide or acetylacetonate in the second sol is adjusted to fall within the range from 0.005 to 3.0 mol %. The second sol is applied to the glass substrate to form a gel film.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: November 30, 1993
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Ryuzo Uemura, Toshikazu Nishide, Ichiro Nakamura
  • Patent number: 5261455
    Abstract: A pressure control valve for adjusting a controlled pressure supplied to an actuator includes first and second valves. The first valve serves to modify a pressure level of a working fluid supplied from a fluid pressure source to a preselected level and provides it to the actuator. The second valve is responsive to a control signal commanding elevation or reduction in the controlled pressure from a controller to adjust a supply pressure level from the fluid pressure source to provide a pilot pressure, elevated or reduced to a preselected level, to the first valve for activating same. When elevating or reducing the pilot pressure, the second valve decreases the supply pressure level from the fluid pressure source by a preselected degree, for balancing a flow gain when elevating the pilot pressure with that when reducing the pilot pressure, for providing uniform response for elevation and reduction of the controlled pressure to the actuator.
    Type: Grant
    Filed: November 15, 1991
    Date of Patent: November 16, 1993
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Kenro Takahashi, Naohiko Inoue
  • Patent number: 5258686
    Abstract: An automotive lamp device includes a metal lamp housing having an opening for passing light therethrough, an electric-discharge lamp accommodated in the lamp housing to provide a required amount of light to be emitted by the lamp device, a lens having a series of modified prisms or ridges that bend the light beam generated by the discharge lamp into a desired pattern, a finisher disposed in an inner perimeter section other than a main lens section of the lens, for preventing propagation of the light beams through a section other than the main lens section of the lens. The finisher is made of metal and, in addition, electromagnetic shielding is employed in the lens for preventing undesirable electromagnetic radiation noise generated by the discharge lamp from leaking through the lens to the exterior of the lamp housing, while allowing the required amount of light to pass through the lens.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: November 2, 1993
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Toru Segoshi, Takashi Ashida
  • Patent number: 5255516
    Abstract: In a torque converter of a coreless type allowing and utilizing a fluid flow in a central core region, the impeller blade exit angle is made smaller in the central core region than in an outer region surrounding the core region so as to increase the velocity and amount of the fluid flow circulating in the outer region and participating in torque multiplication, and decrease the velocity and amount of the fluid flow circulating in the core region like the fluid flow in a fluid coupling.
    Type: Grant
    Filed: April 27, 1992
    Date of Patent: October 26, 1993
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Eiji Ejiri, Kazuhiro Takeda
  • Patent number: 5255662
    Abstract: A first O.sub.2 sensor is installed upstream, and a second O.sub.2 sensor downstream, of the catalyst converter in the exhaust passage of an engine. It is judged from the output of this first O.sub.2 sensor whether the air-fuel ratio (AFR) has changed beyond the theoretical AFR, and AFR feedback control is performed based on the judgment result. A correction value of an AFR feedback control coefficient is previously stored in each learning area in a memory corresponding to the engine running conditions, and the fuel injection amount supplied by the fuel injector is corrected based on this correction value.The correction value is updated by an updating amount corresponding to the magnitude of the difference between the output of the second O.sub.2 sensor and a value corresponding to the theoretical AFR. Undershoot or overshoot of the AFR is thereby prevented, and the AFR is rapidly brought within a desired range.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: October 26, 1993
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Yuki Nakajima
  • Patent number: 5255570
    Abstract: A shift-lock device has a locking member associated with a projection member to engage with the locking member for establishing locking engagement. One of the locking member and the projection member is rigidly connected to a selector of an automatic power transmission and the other is rigidly secured to a stationary member in the vehicular body. The locking member is normally and resiliently biased toward locking direction for establishing locking engagement with the projection member. The locking member is associated with a lock release actuator which is electrically operable and active for a predetermined period only when a predetermined safety condition is established.
    Type: Grant
    Filed: December 31, 1991
    Date of Patent: October 26, 1993
    Assignees: Nissan Motor Company, Ltd., Fuji Kiko Company, Ltd.
    Inventors: Katsunori Shirahama, Masaharu Ishizuki, Yoshimi Yamamoto, Yasushi Asano, Hiroshi Sakon, Motohiro Saito