Patents by Inventor Jun Kagawa

Jun Kagawa 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).

  • Control apparatus for automatic transmission having fail-safe function during vehicle stop
    Patent number: 7857728
    Abstract: A control apparatus for an automatic transmission including a plurality of frictional elements each arranged to be engaged by receiving supply of an engagement pressure regulated by a solenoid, and being arranged to attain a plurality of gear stages by combination of engagements of the frictional elements, the control apparatus includes a failure occurrence sensing section configured to sense an occurrence of a failure-induced disengagement in one of the frictional elements based on a failure of one of the solenoids, based on an engine racing by a depression of an accelerator pedal in a state in which ranges other than a parking range and a neutral range are selected during a stop of a vehicle; and a command output section configured to output a limp home mode command to attain one of the gear stages to enable the vehicle to start.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: December 28, 2010
    Assignee: JATCO Ltd
    Inventors: Hajime Tasaka, Hirofumi Michioka, Fumitaka Nagashima, Yutaka Tohyama, Jun Kagawa
  • CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION HAVING FAIL-SAFE FUNCTION DURING VEHICLE STOP
    Publication number: 20080058157
    Abstract: A control apparatus for an automatic transmission including a plurality of frictional elements each arranged to be engaged by receiving supply of an engagement pressure regulated by a solenoid, and being arranged to attain a plurality of gear stages by combination of engagements of the frictional elements, the control apparatus includes a failure occurrence sensing section configured to sense an occurrence of a failure-induced disengagement in one of the frictional elements based on a failure of one of the solenoids, based on an engine racing by a depression of an accelerator pedal in a state in which ranges other than a parking range and a neutral range are selected during a stop of a vehicle; and a command output section configured to output a limp home mode command to attain one of the gear stages to enable the vehicle to start.
    Type: Application
    Filed: September 6, 2007
    Publication date: March 6, 2008
    Inventors: Hajime TASAKA, Hirofumi Michioka, Fumitaka Nagashima, Yutaka Tohyama, Jun Kagawa