Patents Assigned to Nissan Motor Company, Ltd.
  • Patent number: 5090950
    Abstract: An automatic power transmission includes a primary transmission unit having plurality of gear elements for establishing predetermined speed ratios and a subsidiary transmission unit having an under-drive gear element for establishing at least one and a direct drive. Each gear element is associated with a friction element which controls associated one of the gear element for establishing one of a plurality of predetermined speed ratios. The friction element is connected to a hydraulic circuit which controls position of the friction element between engaged position and released position for establishing the one of speed ratios.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: February 25, 1992
    Assignees: Nissan Motor Company, Ltd., Jatco Corporation
    Inventors: Taku Sugano, Kazuyoshi Iwanaga, Noboru Hattori
  • Patent number: 5090766
    Abstract: A control system for an aerodynamic equipment of an automotive vehicle, which is effective to prove higher cornering stability of the vehicle.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: February 25, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Hideo Ito, Hiroshi Tonomura, Moritsune Nakata, Yasuhiko Kobiki
  • Patent number: 5086628
    Abstract: An air tempering apparatus for use in an automotive vehicle including a duct having a first passage through which tempered air is discharged into a front compartment portion in front of the front seats and a second passage through which tempered air is discharged into a rear compartment portion in rear of the front seats. A switch is provided for manual operation in the rear compartment portion to generate a command signal to a control unit which thereby controls the amount of tempered air discharged through the second passage into the rear compartment portion.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: February 11, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Kazunobu Hashimoto
  • Patent number: 5081881
    Abstract: A restrictive fluid passageway is defined between an outer sleeve and a bracket to provide fluid communication between a working chamber and a compensation chamber or two compensation chambers. In one embodiment, two compensating chambers are arranged outside of the outer sleeve. In another embodiment, one compensation chamber is arranged within the outer sleeve, and the outer sleeve is constituted by axially separated three sections, i.e., first and second sleeve sections and a spacer section interposed between the first and second sleeve sections. A resilient deformable member and flexible wall member has a pair of axially spaced sealing lips projecting outward from an outer circumferential surface. The sealing lips are interposed between matched ends of the first and second sleeve sections and the spacer section and sealingly contact an inner circumferential surface of the bracket.
    Type: Grant
    Filed: October 22, 1990
    Date of Patent: January 21, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Takanobu Ide
  • Patent number: 5083038
    Abstract: In a vehicle vibration reduction control apparatus for controlling an alternator driven by an engine to charge a battery in such a way that vehicle body vibration due to the engine can be cancelled by alternator vibration, the reference voltage applied to an alternator field coil is reduced by a predetermined value for a predetermined time period, whenever battery terminal voltage exceeds a predetermined level. Since the battery charging rate can be reduced automatically at battery overcharge due to cancellation of engine vibration by alternator vibration, it is possible to prevent the battery from being overcharged when engine vibration increases at idling, for instance.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: January 21, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Masao Fukushima, Kei Murakami, Shigeru Kuriyama, Yozo Nakamura, Yuji Maeda, Kenichi Nakamura, Keiichi Mashino, Yuzo Kadomukai
  • Patent number: 5081887
    Abstract: A system and method for controlling a vehicle speed so as to prevent gear shift shock in a power train associated with a vehicular engine and automatic transmission are disclosed in which an air charging efficiency for engine cylinders is reduced during the gear shifting transient period, e.g., when shifting from first gear range to a higher second gear range. Therefore, when engine output is reduced by means of retardation of ignition timing at the time of gear shifting, no misfire occurs due to prevention of internal pressure increase in any engine cylinder. Thus, shift shock can be prevented with the smooth reduction of engine output and air charging efficiency is smoothly recovered after completion of the gear shift transient period.
    Type: Grant
    Filed: June 13, 1990
    Date of Patent: January 21, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Yuji Kato
  • Patent number: 5079911
    Abstract: A gas-turbine power plant includes a recuperator and a combustor which are arranged in a parallel relation with respect to the direction of flow of exhaust gas through the recuperator. The recuperator and the cumbustor are enclosed in a chamber so that a space of the chamber surrounding the recuperator and the combustor serves as a passage for introducing intake air from a compressor to the recuperator.
    Type: Grant
    Filed: March 5, 1990
    Date of Patent: January 14, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Hirotake Kumakura
  • Patent number: 5081585
    Abstract: An image processing section receives data from cameras mounted on the vehicle and produces an image or images from which a first set of so called "local" data is derived and compiled. A sensor section senses the rotational characteristics of two vehicle wheels and the conditions prevailing on either side of the vehicle and complies a second set of so called "global" data. The local and global data are compared and data is only accepted in the event that the differences between the two sets of data fall within predetermined limits and data which falls outside of the ranges deemed erroneous and rejected.
    Type: Grant
    Filed: June 15, 1988
    Date of Patent: January 14, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Kunihiko Kurami, Norimasa Kishi, Kazunori Noso, Akira Hattori
  • Patent number: 5080055
    Abstract: A schedule which is logged in terms of engine speed and which is divided into a number of engine operational zones, is used to determine the amount of axial displacement should be induced in a cam shaft on which a specially shaped cam is mounted. The cam has a first section which configured to simultaneously induce a change in valve lift and the valve closure timing, and a second section which maintains the valve closure timing at essentially a fixed value and induces a further increase in valve lift.
    Type: Grant
    Filed: April 10, 1990
    Date of Patent: January 14, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Hiroshi Komatsu, Kozaburo Okawa, Yutaka Matayoshi, Shigeru Kamegaya
  • Patent number: 5078020
    Abstract: In order to prevent inadvertent shift to reverse, a shift and select mechanism for a vehicular manual transmission is equipped with a reverse select inhibit system which includes a vehicle speed sensor, a switch circuit for producing a reverse inhibit signal when the vehicle speed is above a predetermined low speed, and an actuator assembly for receiving the reverse inhibit signal and inhibiting a select member from moving to a select position for reverse when the vehicle speed is above the predetermined low speed.
    Type: Grant
    Filed: August 4, 1988
    Date of Patent: January 7, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Hideo Hasegawa
  • Patent number: 5078108
    Abstract: A throttle control system for an internal combustion engine includes a first lever which is pivotable around a longitudinal axis of a throttle shaft depending upon movement of an accelerator pedal, and a second lever which extends radially from the throttle shaft and is fixed thereto. The system further includes a transmitting mechanism which mechanically transmits pivotal motion of the first lever to the second lever so that the angular position of a throttle valve fixed to the throttle shaft varies in response to depression of the accelerator pedal. The transmitting mechanism optionally changes the ratio of the pivotal angle of the first lever from that of the second lever, so as to change the relationship between the depression rate of the accelerator pedal and the opening angle of the throttle valve.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: January 7, 1992
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Yoshikazu Ishikawa, Masaaki Saito
  • Patent number: 5077032
    Abstract: A process of production of alumina includes method for controlling specific surface area of alumina. Control of specific surface area is performed by controlling porous structure of alumina. In the process, aluminum alkoxide is subject hydrolysis for forming alumina sol. During hydrolysis process, polyether is used as organic solvent in order to control the porous structure of produced alumina.
    Type: Grant
    Filed: October 11, 1989
    Date of Patent: December 31, 1991
    Assignees: Agency of Industrial Science and Technology, Nissan Motor Company, Ltd.
    Inventors: Fujio Mizukami, Kazuyuki Maeda, Shuichi Niwa, Makoto Toba, Junichi Mine
  • Patent number: 5075165
    Abstract: A composite paint film formed on a steel sheet of an automotive vehicle body. The composite paint film comprises an electrodeposition paint film (I) coated on the steel sheet, and an intermediate coat paint film (II) coated on the first paint film. The electrodeposition paint film is formed of an epoxy-based cationic electrodeposition paint composition and has a minimum melt viscosity not less than 0.2 during hardening. The epoxy-based cationic electrodeposition paint composition includes an amine-added epoxy resin (1) of the type which may be hardened with a blocked isocyanate, a colloidal silica-containing gelled particulate (2), and an alkyltin ester compound of a liquid aliphatic carboxylic acid. The above-mentioned colloidal silica-containing gelled particulate is formed by dispersing a mixture of an acrylic copolymer having a hydrolizable alkoxysilane group and a cationic group and a cationic acidic colloidal silica in water to carry out a cross-linking reaction in particles of the colloidal silica.
    Type: Grant
    Filed: May 11, 1990
    Date of Patent: December 24, 1991
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Hiroyuki Kishi, Hitoshi Kimura, Katsuya Yamamoto, Yoshinobu Tamura, Tsuneo Sakauchi, Masahide Nagaoka, Yoichi Masubuchi, Eisaku Nakatani
  • Patent number: 5072583
    Abstract: An exhaust system for internal combustion engines includes at least two exhaust passages, each passage communicated with at least one branch exhaust passage of an exhaust manifold communicating exhaust ports of a multiple-cylinder engine, and a confluent exhaust passage disposed downstream of said at least two exhaust passages, said confluent exhaust passage including a confluent point for converging downstream ends of said at least two exhaust passages. The exhaust system also includes a communication passage substantially parallel with the at least two exhaust passages and a valve disposed in the communication passage, for allowing a portion of exhaust gas flow to bypass said confluent point only when the engine is within a predetermined high engine revolution range.
    Type: Grant
    Filed: February 8, 1990
    Date of Patent: December 17, 1991
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Tomonori Urushihara, Junichi Yokoyama, Teruyuki Itoh
  • Patent number: 5073160
    Abstract: A planetary gear type multistage transmission is shown which comprises a first planetary gearset, a second planetary gearset, an input shaft and an output shaft. A pinion carrier of the second planetary gearset is united with a pinion carrier of the first planetary gearset. The input shaft is united with the pinion carrier of the second planetary gearset. The output shaft is united with an internal gear of the first planetary gearset. A first clutch is employed for selectively engaging the sun gear of the first planetary gearset with the pinion carrier of the same. A second clutch is employed for selectively engaging the sun gear of the first planetary gearset with the pinion carrier of the second planetary gearset. A th ird clutch is used for selectively engaging the pinion carrier of the second planetary gearset with the internal gear of the same. A first brake is employed for selectively braking the sun gear of the first planetary gearset.
    Type: Grant
    Filed: May 10, 1991
    Date of Patent: December 17, 1991
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Toshikazu Oshidari
  • Patent number: 5069192
    Abstract: An internal combustion engine having a crankcase ventilation system is shown. The engine comprises a cylinder block and an oil pan which are assembled to define a crankcase. A crankshaft is rotatably held in the crankcase and including a counterweight. The cylinder block is formed with a fresh air inlet passage through which the interior of the crankcase and the outside of the engine are communicated. The fresh air inlet passage has a fresh air inlet opening which is exposed to the interior of the crankcase at a position close to the counterweight so that under rotation of the crankshaft, the opening is periodically covered and opened by the counterweight. A blow-by gas passage is provided through which the interior of the crankcase and the outside of the engine are communicated. The opening of the fresh air inlet passage is covered by the counterweight when the passage in the crankcase becomes relatively high, and opened by the same when the pressure in the crankcase becomes relatively low.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: December 3, 1991
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Eiichi Matsumoto, Tatsuo Aruga
  • Patent number: 5069493
    Abstract: In order to keep the latched condition of a door lock proper even when the associated door is considerably deformed due to a vehicle collision or the like, the outside lever extending from the door lock proper is provided with a pointed portion which is directed toward an outer panel of the door. Upon deformation of the outer panel, the pointed portion is forced to stick into the deformed outer panel establishing a locked engagement therebetween and thus preventing the door lock proper from taking the unlatched condition.
    Type: Grant
    Filed: January 3, 1991
    Date of Patent: December 3, 1991
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Haruo Mochida, Yoshio Watanuki
  • Patent number: 5067457
    Abstract: A piston crown is formed with a cavity including a first flame deflecting member which is located amid three flame dispersion zones and which splits burning gases ejected from a transfer port into a first dispersion zone, while the piston is proximate its TDC position, into two flows. The arrangement additionally induces the two flows to assume two essentially symmetrical swirling patterns in second and third dispersion zones. After the piston has descended by a predetermined amount, the burning gases are supplied directly into the second and third zones.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: November 26, 1991
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Motohiro Shinzawa
  • Patent number: 5067744
    Abstract: An air bag system for an automotive vehicle includes gas generator means for generating a pressurized gas for expanding an air bag for restricting movement of a passenger and thus for preventing the passenger from colliding onto the vehicular interior facility and/or a windshield. The gas generator means comprises a low pressure gas generator and a high pressure gas generator having mutually different gas generation capacity. Upon collision, the low pressure gas generator is triggered to fire at earlier timing than that of the high pressure gas generator for reducing impact exerted on the passenger at the initial stage of air bag actuation.
    Type: Grant
    Filed: May 23, 1990
    Date of Patent: November 26, 1991
    Assignee: Nissan Motor Company, Ltd.
    Inventor: Hirokazu Hirabayashi
  • Patent number: 5065494
    Abstract: A method for automatically tightening a tapped member such as a nut is disclosed. A socket of an open end air wrench mounted on a nut tightening robot is coupled with the tapped member. The robot rotates the socket in a first direction, i.e., a tightening direction, to a first relatively small torque, and subsequently rotates the socket in a second direction opposite to the first direction to a predetermined position, i.e., a central receptive position after the socket being disengaged from the tapped member. A rotary encoder is provided to generate pulses in response to the rotation of the socket in the second rotational direction. An angle of rotation of this rotation of the socket in the second direction is detected by counting the number of pulses generated by the encoder. In response to the detected angle of rotation a torque wrench is coupled with the tapped member and the robot rotates the torque wrench in the tightening direction to a second relatively great torque.
    Type: Grant
    Filed: June 6, 1990
    Date of Patent: November 19, 1991
    Assignee: Nissan Motor Company, Ltd.
    Inventors: Yasuhiro Ebihara, Hiroyuki Sakaniwa, Hiroshi Saito