Patents by Inventor Kenji Imamura

Kenji Imamura 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).

  • Patent number: 7988185
    Abstract: The knee-protecting airbag apparatus includes an airbag folded and housed in a lower area inside the column cover. The airbag pushes and opens a door section on the column cover upon deployment. When the door section is thus opened, a door of the door section blocks off an allowance gap formed between an outer circumference of the column cover subjected to position adjustment and a lower area of a peripheral region of an installation opening on a dashboard for installing the column cover by locating a rear edge region of the door to abut on a rear side of the dashboard or the lower area of the peripheral region of the installation opening on the rear side of the dashboard.
    Type: Grant
    Filed: September 27, 2007
    Date of Patent: August 2, 2011
    Assignees: Toyoda Gosei Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuichi Adachi, Kazuaki Bito, Osamu Fukawatase, Tomoyuki Moro, Kenji Imamura, Akiyoshi Sanada
  • Publication number: 20110049847
    Abstract: The knee-protecting airbag apparatus includes an airbag folded and housed in a lower area inside the column cover. The airbag pushes and opens a door section on the column cover upon deployment. When the door section is thus opened, a door of the door section blocks off an allowance gap formed between an outer circumference of the column cover subjected to position adjustment and a lower area of a peripheral region of an installation opening on a dashboard for installing the column cover by locating a rear edge region of the door to abut on a rear side of the dashboard or the lower area of the peripheral region of the installation opening on the rear side of the dashboard.
    Type: Application
    Filed: September 27, 2007
    Publication date: March 3, 2011
    Inventors: Yuichi Adachi, Kazuaki Bito, Osamu Fukawatase, Tomoyuki Moro, Kenji Imamura, Akiyoshi Sanada
  • Patent number: 7896386
    Abstract: In a knee airbag attached to a steering column, the knee airbag is inflated and deployed quickly to a small space between an instrument panel and the knees of a vehicle occupant in a collision. A knee airbag 36 of a knee airbag device 10 is formed of a first inflation portion 38 which extends in a vehicle lateral direction along an instrument panel 12 side, and a second inflation portion 46, which is deployed to a vehicle occupant knee side. A gas supply opening 42, to which gas ejected from an inflator 22 is supplied, is disposed at a first inflation portion 38 side. The gas supply opening 42, and the pair of protection portions 46 provided at left and right end portions of knee airbag 36, are provided on substantially the same line in a vehicle lateral direction, and the first inflation portion 36 communicates the two as a gas flow path.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: March 1, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Fukawatase, Makoto Sekizuka, Kenji Imamura, Takuya Nezaki
  • Publication number: 20110006506
    Abstract: A knee airbag device and a drive motor for an electric power steering device are mounted to a steering column so as to achieve improved mass balance about an instrument panel reinforcement member. A drive motor for an electric power steering device is mounted at a position at the vehicle front direction side with respect to an instrument panel reinforcement member, the opposite side to the side of a knee airbag device. Namely, the knee airbag device is mounted at the vehicle rear direction side with respect to the instrument panel reinforcement member, and the electric power steering device is mounted at the vehicle front direction side of the instrument panel reinforcement member.
    Type: Application
    Filed: February 17, 2009
    Publication date: January 13, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Osamu Fukawatase, Kenji Imamura, Akiyoshi Sanada
  • Patent number: 7862079
    Abstract: A steering column device with a knee airbag device includes a steering column provided with a telescopic mechanism; a column cover that covers the rear end portion of the steering column; an airbag module, provided inside the column cover, which includes a gas generation device that generates gas, and a knee airbag that is inflated and deployed by the gas; an airbag door that is provided in the column cover, and that is opened when the airbag door receives the inflation pressure of the knee airbag; a collision prediction device that predicts that a vehicle will have a collision with a collision object; and a control device that operates the telescopic mechanism so that each of the column cover and the airbag module is moved rearward to a predetermined position, when the collision prediction device predicts that the vehicle will have a collision with the collision object.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: January 4, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Fukawatase, Kenji Imamura, Akiyoshi Sanada, Yuichi Adachi, Kazuaki Bito
  • Publication number: 20100288069
    Abstract: A steering column (SC) includes a lower tube (22) connected to a portion of a vehicle body through a housing (41) of a power steering actuator (40), and an upper tube (21) which is connected to the lower tube (22) to be slidable in a column axis direction, which is telescopic, and which is connected to the portion of the vehicle body through a bracket. The housing (41) is tiltable upward/downward with respect to the portion of the vehicle body. A rear end portion (41a) of the housing (41) is integrated with a lower end portion of the lower tube (22). The upper tube (21) is moved toward a front side of a vehicle with respect to the portion of the vehicle body, when a load equal to or above a predetermined value is applied to the upper tube (21). A reinforcement portion (51) is provided only in a bottom portion of an area where the rear end portion (41a) is integrated with the lower end portion.
    Type: Application
    Filed: November 11, 2008
    Publication date: November 18, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kenji Imamura
  • Publication number: 20100289253
    Abstract: A vehicle airbag device has: a pad cover provided at the center of a steering wheel constituted of a spoke, a rim, and a hub and secured to the hub or to the spoke; an airbag that is provided, in a folded state, at the pad cover and deploys upon collision of the vehicle by tearing the pad cover to restrain a vehicle occupant; and an inflator secured to the hub or to the spoke to supply inflation gas into the airbag upon collision of the vehicle. The pad cover has an extension portion extending from the center of the steering wheel to the rim such that the extension portion overlaps the spoke. The extension portion has a tear portion that tears upon collision of the vehicle. A portion of the airbag is disposed, in a folded state, at the extension portion.
    Type: Application
    Filed: January 22, 2009
    Publication date: November 18, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shigeru Washino, Kenji Imamura
  • Patent number: 7828320
    Abstract: In a knee protecting airbag device of the present invention, in the lower area inside a column cover, a case housing an airbag is attached to a steering column. The steering column includes a movable member for moving toward the front side of a vehicle along the axial direction of the column at the time when an impact on the front of the vehicle acts, and an unmoving stationary member, so that the column can absorb the impact when the movable member moves. The case is attached to such an area of the movable member that the case hits the stationary member when the moving member moves and absorbs impact, and the case can be deformed before or at the time of hitting the stationary member so that the moving stroke of the movable member is preserved when it moves.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: November 9, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuichi Adachi, Kazuaki Bito, Osamu Fukawatase, Tomoyuki Moro, Kenji Imamura, Akiyoshi Sanada
  • Patent number: 7823911
    Abstract: A knee protecting air bag apparatus M1 is mounted to a column cover 16 for covering a column cover 16 for covering a steering column. In operating the apparatus M1, a contained air bag 45 is supplied with an expanding gas G and is projected from the column cover 16 to be able to protect the knee of a driver while being expanded to develop. The column cover 16 includes a door portion 34 opened by being pressed by the air bag to be able to form a projecting opening 22 of the air bag 45 at two left ad right side faces 18b, 18c from a side of a lower face 18a. Inside of the air bag 45 is arranged with a gas flow restricting member 64 such that the expanding gas G is made to flow to a left door portion 36 and a right door portion 37 of the door portion 34 by being directed in outer directions of both left and right sides.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: November 2, 2010
    Assignees: Toyoda Gosei Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuichi Adachi, Kazuaki Bito, Osamu Fukawatase, Kenji Imamura, Akiyoshi Sanada
  • Patent number: 7753403
    Abstract: In a steering column provided with a knee airbag device to a vehicle, an airbag module, which is integrally provided on an airbag door formed separately from a column lower cover, is fitted to a column tube after a steering column body is assembled, and before a steering lock is fitted to the column tube. Then, after the airbag module is fitted to the column tube, a steering column sub-assembly, which is formed by fitting at least the steering lock to the column tube, is fitted to an instrument panel provided in a vehicle at a predetermined position. After the steering column sub-assembly is fitted to the instrument panel, the column lower cover and a column upper cover, which cover a rear end portion of the steering column, are fitted to the steering column.
    Type: Grant
    Filed: March 3, 2008
    Date of Patent: July 13, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Fukawatase, Kenji Imamura, Akiyoshi Sanada, Yuichi Adachi, Kazuaki Bito
  • Publication number: 20100168962
    Abstract: A vehicle steering system includes: a steeling operation member (20) that includes an auxiliary grip portion (154, 156) the position of which is changed between the expected grip position, in which the auxiliary grip portion is expected to be gripped by a driver during a steering operation, and the retracted position, which is reached when the auxiliary grip portion has been retracted from the expected grip position and in which the auxiliary grip portion is not expected to be gripped by the driver during the steering operation; an auxiliary-grip-portion position changing device that changes the position of the auxiliary grip portion between the expected grip position and the retracted position; an airbag device that deploys an airbag toward the driver; and a control unit that controls an operation of the auxiliary-grip-portion position changing device.
    Type: Application
    Filed: February 28, 2008
    Publication date: July 1, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventor: Kenji Imamura
  • Patent number: 7744117
    Abstract: A knee airbag device for a vehicle includes a gas generation portion that is operated to generate gas; a knee airbag that is disposed in a folded state at a predetermined position in a vehicle, wherein when the knee airbag receives the gas, the knee airbag is inflated and deployed toward an area below a steering column so that the knee airbag is disposed between knees of an occupant and a lower portion of an instrument panel; and a thickness regulation member that is provided in the knee airbag at a position in a contact portion that contacts each of the knees of the occupant, and that regulates the thickness of the knee airbag such that the thickness of the knee airbag at the position in the contact portion is smaller than the thickness of the knee airbag in a portion other than the contact portion.
    Type: Grant
    Filed: November 5, 2007
    Date of Patent: June 29, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Fukawatase, Tomoyuki Moro, Kenji Imamura, Akiyoshi Sanada
  • Publication number: 20100127485
    Abstract: A knee airbag device includes a column cover that covers a rear end portion of a steering column from below; and an airbag module. The airbag module is disposed in a column lower cover and includes a gas generation portion that generates gas and a knee airbag that is housed in the airbag module in a folded state, and is inflated and deployed by the gas supplied by the gas generation portion. The airbag module is connected to the steering column by a snap-fit action.
    Type: Application
    Filed: May 8, 2008
    Publication date: May 27, 2010
    Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, TOYODA GOSEI CO., LTD.
    Inventors: Osamu Fukawatase, Kenji Imamura, Akiyoshi Sanada, Yuichi Adachi, Kazuaki Bito
  • Patent number: 7722076
    Abstract: A knee airbag device includes a knee airbag that is disposed in a folded state inside a steering column cover inside which a projection body that projects downward toward one side in a vehicle-width direction is disposed in a rear area, and a cylindrical inflator that supplies the gas to the knee airbag to deploy the knee airbag. The inflator is disposed inside the steering column cover such that at least a portion of the inflator is positioned in the rear area inside the steering column cover. The inflator is disposed in substantially parallel with an axis of a column tube such that the inflator is positioned below the column tube. The end portion of the inflator, in which a gas injection port is formed, faces toward a rear of the vehicle.
    Type: Grant
    Filed: November 8, 2007
    Date of Patent: May 25, 2010
    Assignees: Toyota Jidosha Kabuhsiki Kaisha, Toyoda Gosei Co., Ltd.
    Inventors: Osamu Fukawatase, Tomoyuki Moro, Kenji Imamura, Akiyoshi Sanada, Yuichi Adachi, Kazuaki Bito
  • Patent number: 7708310
    Abstract: The steering column includes a column body, a column cover formed into a generally tubular contour and mounted around the column body and an airbag apparatus. The column cover includes an upper cover and a lower cover. The lower cover is separable from the upper cover and is split into a front section disposed proximate the airbag apparatus and a rear section disposed proximate a combination switch unit disposed at the rear of the airbag apparatus inside the column cover. The rear section is configured separable from the front section as is secured to the column body.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: May 4, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yuichi Adachi, Kazuaki Bito, Osamu Fukawatase, Kenji Imamura, Akiyoshi Sanada
  • Publication number: 20100102539
    Abstract: A knee airbag device includes an airbag module and an airbag door. The airbag module, which is provided inside a column cover that covers the rear end portion of a steering column, includes gas generation device that generates gas when a collision occurs, and a knee airbag that is inflated and deployed from a folded state when the knee airbag receives the gas from the gas generation device. The airbag door, which is provided in the lower portion of the column cover, is opened when the inflation pressure of the knee airbag is equal to or higher than a predetermined value. When the knee airbag is deployed, at least a portion of the airbag door is positioned between an interfering object that is positioned in an area on the side of the column cover, and at leaser a portion of the knee airbag.
    Type: Application
    Filed: February 28, 2008
    Publication date: April 29, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Fukawatase, Kenji Imamura, Akiyoshi Sanada, Kazuaki Bito, Yuichi Adachi
  • Patent number: 7681908
    Abstract: A knee airbag device includes an airbag module and an airbag door. The airbag module includes a gas generation device that is operated when the knee airbag device is operated, and a knee airbag that is stored in a folded state inside a column cover that covers the rear end portion of a steering column. When the knee airbag receives gas from the gas generation device, the knee airbag is inflated and deployed toward the knee of an occupant. The airbag door, provided in the lower portion of the column cover, is made of a flexible material. When the knee airbag is inflated and deployed, the airbag door is opened toward the knee of the occupant due to an airbag inflation pressure.
    Type: Grant
    Filed: November 23, 2007
    Date of Patent: March 23, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Fukawatase, Tomoyuki Moro, Kenji Imamura, Akiyoshi Sanada
  • Publication number: 20100052295
    Abstract: Rapidly constraining the knees of a driver, even for a steering column structure with plural obstructions projecting below the rear end side of the steering column, while also suppressing or preventing any detriment to column collapse operation during a frontal collision; the steering column is fixed to the vehicle body side with a lower bracket, an upper bracket and a housing, and a combination switch is disposed at the rear end side of an inner tube; lower portions are disposed in a state so as to protrude below a column tube and face each other, so that an airbag module is installed in an installation space between the two portions; a module case is manufactured from a fabric, and the airbag module is attached at a position in the vicinity of the combination switch through a rear attachment bracket.
    Type: Application
    Filed: October 4, 2007
    Publication date: March 4, 2010
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Osamu Fukawatase, Kenji Imamura, Akiyoshi Sanada
  • Patent number: 7661700
    Abstract: A knee airbag device includes a knee airbag that is disposed in a folded state inside a steering column cover. When the knee airbag receives gas, the knee airbag is inflated and deployed from an inside of the steering column cover toward knees of an occupant. The thickness of outer portions of the knee airbag, which are positioned outside centers of the knees when the knee airbag is deployed, is set to be larger than the thickness of a general portion of the knee airbag, which is positioned in front of the knees when the knee airbag is deployed.
    Type: Grant
    Filed: November 21, 2007
    Date of Patent: February 16, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Imamura, Osamu Fukawatase, Akiyoshi Sanada
  • Publication number: 20100004827
    Abstract: A vehicle airbag device provided in a steering apparatus, wherein the steering apparatus is configured with grips positioned on the right and left sides but are not positioned on an upper side. An airbag, installed at the center of the steering apparatus, is configured to deploy toward the driver when a vehicle collision occurs. An electronic control unit controls an inflation pressure of the airbag to be increased when the steering angle detected by a steering angle sensor is less than or equal to a predetermined reference angle, as compared to when the steering angle detected by the steering angle sensor exceeds the predetermined reference angle.
    Type: Application
    Filed: January 15, 2008
    Publication date: January 7, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kenji Imamura, Etsuo Shimizu, Shigeru Washino