Patents by Inventor Fukami Imai

Fukami Imai 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: 20140037472
    Abstract: An electrical pump apparatus is provided in which a situation where a failure detection circuit becomes inoperative before detection of a failure of an electric system can be avoided, and the certainty of failure detection can be enhanced. An attaching portion which is to be attached to a vehicle body is formed so that, in a state where an electrical pump apparatus is attached to the vehicle body, a circuit board of a control device is perpendicular to the horizontal direction. A control IC chip which constitutes a microcomputer for detecting a failure of the electric system is placed on a circuit board so as to be higher in the direction of gravity from a lowest water level Hmin at which flooding in a housing causes the electric system to be short-circuited.
    Type: Application
    Filed: January 4, 2012
    Publication date: February 6, 2014
    Applicant: JTEKT CORPORATION
    Inventors: Tsutomu Hibi, Fukami Imai
  • Publication number: 20130280101
    Abstract: There is provided an electric pump device that can suppress the generation of vibration or noise. When reducing hydraulic pressure supplied from an oil pump with the increase of hydraulic pressure supplied from a main pump driven by an engine, an electric oil pump ECU performs a pressure reducing control gradually reducing the hydraulic pressure.
    Type: Application
    Filed: January 4, 2012
    Publication date: October 24, 2013
    Applicant: JTEKT CORPORATION
    Inventors: Fukami Imai, Kengo Uda
  • Patent number: 7182712
    Abstract: An offset value setting processing, in which whether or not all wheel velocities of front wheels and rear wheels are 0 km/h is determined and whether or not a pressing amount of an accelerator pedal is 0% is determined. If it is determined that the vehicle velocity is 0 km/h and that the pressing amount of the accelerator pedal is 0%, a current detection signal voltage at that time is set to an offset voltage. Thus, the offset voltage value is reset and set again if such a condition is established. Consequently, the offset voltage value including the amount of an error due to a temperature drift is set up, thereby preventing drop in control accuracy due to that error.
    Type: Grant
    Filed: April 25, 2003
    Date of Patent: February 27, 2007
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Fukami Imai, Hisaaki Wakao
  • Patent number: 7038895
    Abstract: An abnormality detection apparatus, which reduces erroneous detection of an open abnormality of a relay, includes a microcomputer that activates the relay and determines whether the output voltage of the relay is less than a threshold value. When the output voltage is less than the threshold value, the microcomputer repeats the activation of the relay and the determination. The detection unit detects the occurrence of an open abnormality when the repetition number exceeds two.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: May 2, 2006
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Fukami Imai, Hisaaki Wakao
  • Publication number: 20050148429
    Abstract: An offset value setting processing, whether or not all wheel velocities of front wheels and rear wheels are 0 km/h is determined and whether or not a pressing amount of an accelerator pedal is 0% is determined. If it is determined that the vehicle velocity is 0 km/h and that the pressing amount of the accelerator pedal is 0%, a current detection signal voltage at that time is set to an offset voltage. Thus, the offset voltage value is reset and set again if such a condition is established. Consequently, the offset voltage value including the amount of an error due to a temperature drift is set up, thereby preventing drop in control accuracy due to that error.
    Type: Application
    Filed: April 25, 2003
    Publication date: July 7, 2005
    Inventors: Fukami Imai, Hisaaki Wakao
  • Patent number: 6845838
    Abstract: A four-wheel drive vehicle provides a torque distribution clutch mechanism which directly transmits the driving force generated from the engine to one of two front wheels or two rear wheels, and which transmits it to the other wheels therethrough in order to control the engaging force in accordance with a traveling status of the four-wheel drive vehicle. The vehicle further comprises a tight corner judging structure, a normal mode setting structure, a low friction road judging structure and a tight mode setting structure. The tight corner judging structure judges whether the vehicle travels at a large turning angle or not, and the normal mode setting structure sets a normal mode to control the engaging force when it is judged by the tight corner judging structure that the vehicle does not travel at the large turning angle.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: January 25, 2005
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Hisaaki Wakao, Fukami Imai
  • Patent number: 6842681
    Abstract: A torque distribution control device for a four-wheel drive vehicle has a torque distribution device for distributing the drive power transmitted from an engine to either of the front wheels or the rear wheels as prime drive wheels, to other wheels as sub-drive wheels. The control device judges whether or not an abnormality is involved in wheel speed signals which are input from wheel speed sensors associated respectively with the front and rear wheels. A normal-state method of calculating a command torque which is applied to the torque distribution device to vary the drive power transmitted to the sub-drive wheels, is then altered to an abnormal-state method of calculating the command torque based on data which does not include one wheel speed signal involving the abnormality when the same occurs with one of the wheel speed signals, whereby the vehicle is enabled to continue the four-wheel drive even when the abnormality occurs.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: January 11, 2005
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Fukami Imai, Tatsuya Inagaki, Hisaaki Wakao, Kiyoshige Kato, Satomi Ito
  • Publication number: 20040016585
    Abstract: A four-wheel drive vehicle provides a torque distribution clutch mechanism which directly transmits the driving force generated from the engine to one of tow front wheels or two rear wheels, and which transmits it to the other wheels therethrough in order to control the engaging force in accordance with a traveling status of the four-wheel drive vehicle. The vehicle further comprises a tight corner judging means, a normal mode setting means, a low friction road judging means and a tight mode setting means. The tight corner judging means judges whether the vehicle travels at a large turning angle or not, and the normal mode setting means sets a normal mode to control the engaging force when it is judged by the tight corner judging means that the vehicle does not travel at the large turning angle.
    Type: Application
    Filed: April 23, 2003
    Publication date: January 29, 2004
    Applicant: TOYODA KOKI KABUSHIKI KAISHA
    Inventors: Hisaaki Wakao, Fukami Imai
  • Publication number: 20030226702
    Abstract: A torque distribution control device for a four-wheel drive vehicle is disclosed having a torque distribution device for distributing the drive power transmitted from an engine to either of the front wheels or the rear wheels as prime drive wheels, to other wheels as sub-drive wheels. In the control device, abnormality judgment means judges whether or not an abnormality is involved in wheel speed signals which are input from wheel speed sensors associated respectively with the front and rear wheels. Means is further provided for altering a normal-state method of calculating a command torque which is applied to the torque distribution device to vary the drive power transmitted to the sub-drive wheels, to an abnormal-state method of calculating the command torque based on data which does not include one wheel speed signal involving the abnormality when the same occurs with one of the wheel speed signals, whereby the vehicle is enabled to continue the four-wheel drive even when the abnormality occurs.
    Type: Application
    Filed: April 23, 2003
    Publication date: December 11, 2003
    Applicant: TOYODA KOKI KABUSHIKI KAISHA
    Inventors: Fukami Imai, Tatsuya Inagaki, Hisaaki Wakao, Kiyoshige Kato, Satomi Ito
  • Patent number: 6582119
    Abstract: A temperature sensing apparatus comprises a temperature sensor, a current measuring device and temperature detection circuit. The temperature sensor contains a thermal resistor that is disposed near a motor and outputs voltages acting to the thermal resistor. The current measuring device measures quantity of current that is applied to the motor. The temperature detection circuit detects temperature of the motor according to the output voltages from the temperature sensor. And, the temperature detection circuit judges whether a predetermined quantity of current is applied to the motor during a predetermined time. When the predetermined quantity of current is applied to the motor during the predetermined time, the temperature detection circuit compares a temperature detected by the current measuring device with a predetermined temperature. When the detected temperature is lower than the predetermined temperature, the temperature detection circuit decides a wire of the thermal resistor breaks.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: June 24, 2003
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Yutaka Mori, Yukihiko Kanayama, Fukami Imai, Yoshiyuki Shibata, Susumu Koike, Yasushi Yamada
  • Publication number: 20030080746
    Abstract: An abnormality detection apparatus, which reduces erroneous detection of an open abnormality of a relay, includes a microcomputer that activates the relay and determines whether the output voltage of the relay is less than a threshold value. When the output voltage is less than the threshold value, the microcomputer repeats the activation of the relay and the determination. The detection unit detects the occurrence of an open abnormality when the repetition number exceeds two.
    Type: Application
    Filed: October 31, 2002
    Publication date: May 1, 2003
    Applicant: TOYODA KOKI KABUSHIKI KAISHA
    Inventors: Fukami Imai, Hisaaki Wakao
  • Publication number: 20010038661
    Abstract: A temperature sensing apparatus comprises a temperature sensor, a current measuring device and temperature detection circuit. The temperature sensor contains a thermal resistor that is disposed near a motor and outputs voltages acting to the thermal resistor. The current measuring device measures quantity of current that is applied to the motor. The temperature detection circuit detects temperature of the motor according to the output voltages from the temperature sensor. And, the temperature detection circuit judges whether a predetermined quantity of current is applied to the motor during a predetermined time. When the predetermined quantity of current is applied to the motor during the predetermined time, the temperature detection circuit compares a temperature detected by the current measuring device with a predetermined temperature. When the detected temperature is lower than the predetermined temperature, the temperature detection circuit decides a wire of the thermal resistor breaks.
    Type: Application
    Filed: March 13, 2001
    Publication date: November 8, 2001
    Applicant: TOYODA KOKI KABUSHIKI KAISHA
    Inventors: Yutaka Mori, Yukihiko Kanayama, Fukami Imai, Yoshiyuki Shibata, Susumu Koike, Yasushi Yamada