Patents by Inventor Sadahiro Kawahara

Sadahiro Kawahara 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: 11875685
    Abstract: A convoy travel system includes a plurality of vehicles and is configured such that the plurality of vehicles form a convoy and travel. The plurality of vehicles include a preceding vehicle and following vehicles configured so as to follow the preceding vehicle by means of automatic driving. The preceding vehicle is equipped with a steering information acquisition unit configured so as to acquire steering information pertaining to steering of the preceding vehicle, and a transmission unit configured so as to transmit the steering information to the following vehicles. The following vehicles are equipped with a reception unit configured so as to receive the steering information, and an automatic driving control unit configured so as to begin a steering angle control for avoiding a collision with an obstruction when the steering information indicates the execution of emergency steering for avoiding a collision with the obstruction.
    Type: Grant
    Filed: July 12, 2019
    Date of Patent: January 16, 2024
    Assignees: HINO MOTORS, LTD., JTEKT CORPORATION
    Inventors: Hirokazu Okuyama, Nobuhiko Kojima, Naoshi Ichinose, Hirofumi Yasui, Tomonari Yamakawa, Sadahiro Kawahara, Masayoshi Takeda, Syuuichi Yonemura
  • Patent number: 11400936
    Abstract: A travel assistance device configured to execute travel assistance when a plurality of vehicles form a vehicle group and travel in a line. The travel assistance device includes: a first control unit configured to, if there is lane-change instruction for the vehicle group, cause an end-of-line vehicle to change lanes, such vehicle being the vehicle from among the plurality of vehicles forming the vehicle group that is positioned at the end of the line; and a second control unit configured to, following the lane change of the end-of-line vehicle, allow a lane change for at least one vehicle that is other than the end-of-line vehicle and that is one of the vehicles forming the vehicle group.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: August 2, 2022
    Assignees: JTEKT CORPORATION, HINO MOTORS, LTD.
    Inventors: Syuuichi Yonemura, Masayoshi Takeda, Hirokazu Okuyama, Hirofumi Yasui, Naoshi Ichinose, Nobuhiko Kojima, Tomonari Yamakawa, Sadahiro Kawahara
  • Publication number: 20210304618
    Abstract: A convoy travel system includes a plurality of vehicles and is configured such that the plurality of vehicles form a convoy and travel. The plurality of vehicles include a preceding vehicle and following vehicles configured so as to follow the preceding vehicle by means of automatic driving. The preceding vehicle is equipped with a steering information acquisition unit configured so as to acquire steering information pertaining to steering of the preceding vehicle, and a transmission unit configured so as to transmit the steering information to the following vehicles. The following vehicles are equipped with a reception unit configured so as to receive the steering information, and an automatic driving control unit configured so as to begin a steering angle control for avoiding a collision with an obstruction when the steering information indicates the execution of emergency steering for avoiding a collision with the obstruction.
    Type: Application
    Filed: July 12, 2019
    Publication date: September 30, 2021
    Applicants: HINO MOTORS, LTD., JTEKT CORPORATION
    Inventors: Hirokazu OKUYAMA, Nobuhiko KOJIMA, Naoshi ICHINOSE, Hirofumi YASUI, Tomonari YAMAKAWA, Sadahiro KAWAHARA, Masayoshi TAKEDA, Syuuichi YONEMURA
  • Publication number: 20210245759
    Abstract: A travel assistance device configured to execute travel assistance when a plurality of vehicles form a vehicle group and travel in a line. The travel assistance device includes: a first control unit configured to, if there is lane-change instruction for the vehicle group, cause an end-of-line vehicle to change lanes, such vehicle being the vehicle from among the plurality of vehicles forming the vehicle group that is positioned at the end of the line; and a second control unit configured to, following the lane change of the end-of-line vehicle, allow a lane change for at least one vehicle that is other than the end-of-line vehicle and that is one of the vehicles forming the vehicle group.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 12, 2021
    Applicants: JTEKT CORPORATION, HINO MOTORS, LTD.
    Inventors: Syuuichi YONEMURA, Masayoshi TAKEDA, Hirokazu OKUYAMA, Hirofumi YASUI, Naoshi ICHINOSE, Nobuhiko KOJIMA, Tomonari YAMAKAWA, Sadahiro KAWAHARA
  • Publication number: 20210240201
    Abstract: A platooning system includes a vehicle control system installed in each of vehicles that include a manually-driven head vehicle. The vehicle control system controls a host vehicle such that the host vehicle follows a lead vehicle through wireless communication between the host vehicle and the lead vehicle. The vehicle control system is installed in the host vehicle and the lead vehicle. The vehicle control system includes a sensor that detects a state of the host vehicle, an actuator that adjusts a behavior of the host vehicle, and a controller that controls the host vehicle. The controller of the head vehicle physically notifies a driver of the host vehicle of a state of a subsequent vehicle by operating the actuator of the host vehicle when a state signal including information that indicates the state of the subsequent vehicle is received through the wireless communication.
    Type: Application
    Filed: April 22, 2019
    Publication date: August 5, 2021
    Applicants: JTEKT CORPORATION, HINO MOTORS, LTD.
    Inventors: Hirokazu OKUYAMA, Nobuhiko KOJIMA, Naoshi ICHINOSE, Hirofumi YASUI, Masayoshi TAKEDA, Syuuichi YONEMURA, Sadahiro KAWAHARA, Tomonari YAMAKAWA
  • Patent number: 7931281
    Abstract: A variable stiffness stabilizer device (1) has a stabilizer bar (2) and actuators (3). The stabilizer bar (2) has a torsion bar (4) extending in the lateral direction (X1) of a vehicle and arms (6) connected through bend portions (5) to the ends (4a, 4b) of the torsion bar (4) and bendingly deformed according to the strokes of wheel supporting members (11). Variable bending stiffness parts (13; 130) of the arms (6) are rotatable about the axes (C1) of the arms (6), so that the bending stiffness of the arms (6) can be changed according to their rotational positions. The actuators (3) rotationally drive the variable bending stiffness parts (13; 130) about the axes (C1) to adjust the rotational positions of the variable bending stiffness parts (13; 130).
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: April 26, 2011
    Assignee: JTEKT Corporation
    Inventors: Shingo Maeda, Sadahiro Kawahara, Masanori Arima, Kosuke Yamanaka
  • Patent number: 7862084
    Abstract: A vehicle steering apparatus, includes a steering member for rotational operation, a support mechanism that supports the steering member so as to be movable between a housing position where the steering member is housed in a fixed frame of an instrument panel and a projection position where the steering member projects to an outside of the fixed frame, and that regulates an attitude of the steering member located between the housing position and the projection position, and a movable frame that moves together with the steering member, and that constitutes a part of the instrument panel by covering an opening formed in the fixed frame of the instrument panel when the steering member is housed at the housing position.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: January 4, 2011
    Assignee: JTEKT Corporation
    Inventors: Shingo Maeda, Ryouhei Hayama, Sadahiro Kawahara, Shiro Nakano, Kou Shiba
  • Patent number: 7806224
    Abstract: A vehicle steering apparatus includes a steering member for rotational operation, and a support mechanism that supports the steering member so as to be movable between a housing position where the steering member is housed in a fixed frame of an instrument panel and a projection position where the steering member projects to an outside of the fixed frame. The steering member includes a main body supported by the support mechanism, a pair of grip sections which are movable between the housing position and the projection position together with the main body, and which are supported so as to be movable between a nonoperating position and an operating position by the main body, and a grip section drive actuator which is supported by the main body, and drives the pair of grip sections to the nonoperating position and the operating position.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: October 5, 2010
    Assignee: JTEKT Corporation
    Inventors: Shingo Maeda, Ryouhei Hayama, Sadahiro Kawahara, Shiro Nakano, Kou Shiba
  • Publication number: 20100013175
    Abstract: A variable stiffness stabilizer device (1) has a stabilizer bar (2) and actuators (3). The stabilizer bar (2) has a torsion bar (4) extending in the lateral direction (X1) of a vehicle and arms (6) connected through bend portions (5) to the ends (4a, 4b) of the torsion bar (4) and bendingly deformed according to the strokes of wheel supporting members (11). Variable bending stiffness parts (13; 130) of the arms (6) are rotatable about the axes (C1) of the arms (6), so that the bending stiffness of the arms (6) can be changed according to their rotational positions. The actuators (3) rotationally drive the variable bending stiffness parts (13; 130) about the axes (C1) to adjust the rotational positions of the variable bending stiffness parts (13; 130).
    Type: Application
    Filed: October 3, 2007
    Publication date: January 21, 2010
    Applicant: JTEKT Corporation
    Inventors: Shingo Maeda, Sadahiro Kawahara, Masanori Arima, Kosuke Yamanaka
  • Publication number: 20090064815
    Abstract: A vehicle steering apparatus includes a steering member for rotational operation, and a support mechanism that supports the steering member so as to be movable between a housing position where the steering member is housed in a fixed frame of an instrument panel and a projection position where the steering member projects to an outside of the fixed frame. The steering member includes a main body supported by the support mechanism, a pair of grip sections which are movable between the housing position and the projection position together with the main body, and which are supported so as to be movable between a nonoperating position and an operating position by the main body, and a grip section drive actuator which is supported by the main body, and drives the pair of grip sections to the nonoperating position and the operating position.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 12, 2009
    Applicant: JTEKT Corporation
    Inventors: Shingo MAEDA, Ryouhei HAYAMA, Sadahiro KAWAHARA, Shiro NAKANO, Kou SHIBA
  • Publication number: 20090065285
    Abstract: A vehicle steering apparatus, includes a steering member for rotational operation, a support mechanism that supports the steering member so as to be movable between a housing position where the steering member is housed in a fixed frame of an instrument panel and a projection position where the steering member projects to an outside of the fixed frame, and that regulates an attitude of the steering member located between the housing position and the projection position, and a movable frame that moves together with the steering member, and that constitutes a part of the instrument panel by covering an opening formed in the fixed frame of the instrument panel when the steering member is housed at the housing position.
    Type: Application
    Filed: September 5, 2008
    Publication date: March 12, 2009
    Applicant: JTEKT CORPORATION
    Inventors: Shingo Maeda, Ryouhei Hayama, Sadahiro Kawahara, Shiro Nakano, Kou Shiba
  • Patent number: 6742411
    Abstract: A brake pedal apparatus for an automotive vehicle is disclosed as including a pedal bracket 2, a pivot bracket 3, a slide plate 9 fixedly secured to a vehicular body structural member 41, 52, and an impact absorbing section 10 located between the pedal bracket and the slide plate. During a frontal collision of a vehicle, the impact absorbing section allows the pedal bracket to be contracted and deformed into a position wherein a pedal arm 8 is retracted in a forward direction of the vehicle whereby even when a master vac. is retracted in the forward direction or even when a dash floor panel 40 is deformed into a vehicle compartment with a resultant rearward movement of a push rod 24, a depressing position of the pedal arm remains in a position to avoid a differential feeling touch to be applied to a vehicle driver.
    Type: Grant
    Filed: August 23, 2002
    Date of Patent: June 1, 2004
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Tsutomu Aoki, Hiroyuki Mizuma, Sadahiro Kawahara
  • Publication number: 20030183037
    Abstract: A pedal mounting structure which includes a pedal arm (3) including a pedal (2); a supporting unit (5, 6) pivotally supporting the pedal arm (3) as turnable in accordance with a stepping operation onto the pedal (2); and a first fixture (8) and a second fixture (9) for fitting the supporting unit (5, 6) to a vehicle body (10). The second fixture (9) is provided in a position closer to the pedal (2) than the first fixture (8), and is fitted to a portion having a smaller deformation upon a collision of a vehicle than a portion to which the first fixture (8) is fitted.
    Type: Application
    Filed: February 28, 2003
    Publication date: October 2, 2003
    Inventors: Sadahiro Kawahara, Sadayuki Kezuka, Hiroyuki Mizuma, Naoyuki Sugiyama
  • Publication number: 20030029267
    Abstract: A brake pedal apparatus for an automotive vehicle is disclosed as including a pedal bracket 2, a pivot bracket 3, a slide plate 9 fixedly secured to a vehicular body structural member 41, 52, and an impact absorbing section 10 located between the pedal bracket and the slide plate. During a frontal collision of a vehicle, the impact absorbing section allows the pedal bracket to be contracted and deformed into a position wherein a pedal arm 8 is retracted in a forward direction of the vehicle whereby even when a master vac. is retracted in the forward direction or even when a dash floor panel 40 is deformed into a vehicle compartment with a resultant rearward movement of a push rod 24, a depressing position of the pedal arm remains in a position to avoid a differential feeling touch to be applied to a vehicle driver.
    Type: Application
    Filed: August 23, 2002
    Publication date: February 13, 2003
    Inventors: Tsutomu Aoki, Hiroyuki Mizuma, Sadahiro Kawahara
  • Patent number: 6418812
    Abstract: A brake pedal structure for a vehicle includes a pedal bracket provided on a dash panel of the vehicle, a pedal shaft provided on the pedal bracket, a pedal arm pivotally supported by the pedal shaft in a freely rotatable manner around the pedal shaft as a rotational axis, and a push rod connected to the pedal arm for operating a brake system of the vehicle in response to rotation of the pedal arm. The push rod has a portion so as to interrupt the transmission of a load input at the time of collision of said vehicle.
    Type: Grant
    Filed: June 14, 2001
    Date of Patent: July 16, 2002
    Assignees: Nissan Motor Co., Ltd., Yorozu Corporation
    Inventors: Hiroyuki Mizuma, Sadahiro Kawahara, Tohru Kobayashi, Sunao Gouhara
  • Publication number: 20010027696
    Abstract: A brake pedal structure for a vehicle disclosed herein includes a pedal bracket provided on a dash panel of the vehicle, a pedal shaft provided on the pedal bracket, a pedal arm pivotally supported by the pedal shaft in a freely rotatable manner around the pedal shaft as a rotational axis, and a push rod connected to the pedal arm for operating a brake system of the vehicle in response to rotation of the pedal arm. The push rod has a portion so as to interrupt the transmission of a load input at the time of collision of said vehicle.
    Type: Application
    Filed: June 14, 2001
    Publication date: October 11, 2001
    Inventors: Hiroyuki Mizuma, Sadahiro Kawahara, Tohru Kobayashi, Sunao Gouhara
  • Patent number: 6279417
    Abstract: A brake pedal structure for a vehicle disclosed herein includes a pedal bracket provided on a dash panel of the vehicle, a pedal shaft provided on the pedal bracket, a pedal arm pivotally supported by the pedal shaft in a freely rotatable manner around the pedal shaft as a rotational axis, and a push rod connected to the pedal arm for operating a brake system of the vehicle in response to rotation of the pedal arm. The push rod has a portion so as to interrupt the transmission of a load input at the time of collision of said vehicle.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: August 28, 2001
    Assignees: Nissan Motor Co., Ltd., Yorozu Corporation
    Inventors: Hiroyuki Mizuma, Sadahiro Kawahara, Tohru Kobayashi, Sunao Gouhara
  • Patent number: 6142036
    Abstract: A brake pedal apparatus for a vehicle includes a pedal bracket provided on a dash panel, a pedal shaft provided on the pedal bracket, a pedal arm supported by the pedal shaft in a rotatable manner around the pedal shaft, a first engaging portion provided on the pedal arm, a push rod lever supported by the pedal shaft in a rotatable manner around the pedal shaft and connected to a push rod, and a second engaging portion provided on the push rod lever. The push rod lever or the pedal arm is movable along the axial direction of the pedal shaft, and the first and second engaging portions are capable of engaging with each other.
    Type: Grant
    Filed: January 13, 1999
    Date of Patent: November 7, 2000
    Assignees: Nissan Motor Co., Ltd., Yorozu Corporation
    Inventors: Hiroyuki Mizuma, Sadahiro Kawahara, Sunao Gouhara
  • Patent number: 5309784
    Abstract: A gear shift apparatus includes a shaft having a first axis extending laterally with respect to a vehicle body. A bracket is secured to a pivot pin rotatable about a second axis extending laterally with respect to the first axis. A gear shift lever is secured to the bracket for unitary rotation therewith about the second axis. A sleeve is fixed to the gear shift lever for unitary motion therewith. A check ball is supported by the sleeve and urged against a cam surface of a stationary position plate. The cam surface has a plurality of recesses engaged with the check ball.
    Type: Grant
    Filed: May 4, 1993
    Date of Patent: May 10, 1994
    Assignees: Nissan Motor Co., Ltd., Ohi Seisakusho Co., Ltd., Fuji Kiko Co., Ltd.
    Inventors: Satoshi Kobayashi, Sadahiro Kawahara, Hiroshi Yamazaki, Takumi Watanabe, Yasushi Asano, Yoshimasa Kataumi