Patents by Inventor Yasuhiro Oomura

Yasuhiro Oomura 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: 8775024
    Abstract: A steering damper system for a saddle riding type vehicle having an MR damper includes a damping force calculating unit arranged to calculate a damping force according to a steering angle speed, and an adjusting command output unit arranged to determine a running state from a vehicle speed and a steering angle detected by sensors, with reference to a reference table, and correcting the damping force calculated according to the running state. The reference table has areas divided by a steering angle range according to vehicle speed, and damping force adjustment factors according to running states are assigned to these areas. The steering angle range dividing the areas becomes narrower with an increase in vehicle speed, to accurately reflect the running states of the vehicle. A proper damping force can be generated according to a running state of the vehicle. The steering damper system eases the rider's burden accompanying steering operations, and is excellent in controllability.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: July 8, 2014
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Nobuo Hara, Yasuhiro Oomura
  • Patent number: 8265820
    Abstract: A saddle riding type vehicle includes a support mechanism arranged to support a pair of wheels to be movable up and down relative to a vehicle body, a lock mechanism connectable to the support mechanism and arranged to limit up-and-down motion of the pair of wheels, various sensors arranged to detect vehicle states, and a controller arranged to control the lock mechanism based on results of detection by the various sensors. The controller controls the lean limitation to the up-and-down motion of the pair of wheels and its cancellation automatically. The rider need not carry out a special control for operating the lock mechanism. In addition, the lock mechanism is controlled according to the vehicle states, which allows the rider to travel lightly and comfortably.
    Type: Grant
    Filed: May 26, 2009
    Date of Patent: September 11, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Nobuo Hara, Kenichi Watanabe, Yasuhiro Oomura, Takafumi Nonaka
  • Patent number: 8251375
    Abstract: A body leaning control system includes a support mechanism arranged to support a pair of wheels to be movable up and down relative to a vehicle body, a resistance applying mechanism arranged to apply to the support mechanism a resistance to up-and-down motions of the pair of wheels, a lean amount acquiring device arranged to detect a lean amount of the vehicle body, and a controller arranged, based on detection results received from the lean amount acquiring device, to set the resistance of the resistance applying mechanism to a first resistance when the lean amount of the vehicle body exceeds a first angle, and to set the resistance of the resistance applying mechanism to a second resistance smaller than the first resistance when the lean amount of the vehicle body is at the first angle or less. This system can conveniently inhibit the vehicle body from leaning in excess of the first angle.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: August 28, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Nobuo Hara, Yasuhiro Oomura
  • Patent number: 8020878
    Abstract: A body leaning control system includes a support mechanism arranged to support at least a pair of traveling members that contact a traveling surface and are provided at opposite sides of the vehicle body to be movable up and down relative to the vehicle body, a resistance applying mechanism arranged to apply to the support mechanism a resistance to up-and-down motions of the pair of wheels, a lean information detecting device arranged to detect information on a lean amount of the vehicle body, and a controller arranged to perform control, based on detection results received from the lean information detecting device, to set the resistance of the resistance applying mechanism to a first resistance when the lean amount of the vehicle body is increasing, and to set the resistance of the resistance applying mechanism to a second resistance smaller than the first resistance when the lean amount of the vehicle body is decreasing.
    Type: Grant
    Filed: July 29, 2009
    Date of Patent: September 20, 2011
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Nobuo Hara, Yasuhiro Oomura
  • Publication number: 20100032914
    Abstract: A body leaning control system includes a support mechanism arranged to support at least a pair of traveling members that contact a traveling surface and are provided at opposite sides of the vehicle body to be movable up and down relative to the vehicle body, a resistance applying mechanism arranged to apply to the support mechanism a resistance to up-and-down motions of the pair of wheels, a lean information detecting device arranged to detect information on a lean amount of the vehicle body, and a controller arranged to perform control, based on detection results received from the lean information detecting device, to set the resistance of the resistance applying mechanism to a first resistance when the lean amount of the vehicle body is increasing, and to set the resistance of the resistance applying mechanism to a second resistance smaller than the first resistance when the lean amount of the vehicle body is decreasing.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 11, 2010
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Nobuo Hara, Yasuhiro Oomura
  • Publication number: 20100025944
    Abstract: A body leaning control system includes a support mechanism arranged to support a pair of wheels to be movable up and down relative to a vehicle body, a resistance applying mechanism arranged to apply to the support mechanism a resistance to up-and-down motions of the pair of wheels, a lean amount acquiring device arranged to detect a lean amount of the vehicle body, and a controller arranged, based on detection results received from the lean amount acquiring device, to set the resistance of the resistance applying mechanism to a first resistance when the lean amount of the vehicle body exceeds a first angle, and to set the resistance of the resistance applying mechanism to a second resistance smaller than the first resistance when the lean amount of the vehicle body is at the first angle or less. This system can conveniently inhibit the vehicle body from leaning in excess of the first angle.
    Type: Application
    Filed: July 29, 2009
    Publication date: February 4, 2010
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Nobuo Hara, Yasuhiro Oomura
  • Publication number: 20090302557
    Abstract: A steering damper system for a saddle riding type vehicle having an MR damper includes a damping force calculating unit arranged to calculate a damping force according to a steering angle speed, and an adjusting command output unit arranged to determine a running state from a vehicle speed and a steering angle detected by sensors, with reference to a reference table, and correcting the damping force calculated according to the running state. The reference table has areas divided by a steering angle range according to vehicle speed, and damping force adjustment factors according to running states are assigned to these areas. The steering angle range dividing the areas becomes narrower with an increase in vehicle speed, to accurately reflect the running states of the vehicle. A proper damping force can be generated according to a running state of the vehicle. The steering damper system eases the rider's burden accompanying steering operations, and is excellent in controllability.
    Type: Application
    Filed: May 26, 2009
    Publication date: December 10, 2009
    Applicant: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Nobuo Hara, Yasuhiro Oomura
  • Publication number: 20090299565
    Abstract: A saddle riding type vehicle includes a support mechanism arranged to support a pair of wheels to be movable up and down relative to a vehicle body, a lock mechanism connectable to the support mechanism and arranged to limit up-and-down motion of the pair of wheels, various sensors arranged to detect vehicle states, and a controller arranged to control the lock mechanism based on results of detection by the various sensors. The controller controls the lean limitation to the up-and-down motion of the pair of wheels and its cancellation automatically. The rider need not carry out a special control for operating the lock mechanism. In addition, the lock mechanism is controlled according to the vehicle states, which allows the rider to travel lightly and comfortably.
    Type: Application
    Filed: May 26, 2009
    Publication date: December 3, 2009
    Applicant: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Nobuo Hara, Kenichi Watanabe, Yasuhiro Oomura, Takafumi Nonaka
  • Patent number: 5796524
    Abstract: This invention provides a catadioptric optical system for achieving excellent imaging performance to obtain a resolution of quartermicron order. The catadioptric optical system is an optical system for transferring a reduced image of a pattern on a first plane onto a second plane and includes a beam splitter, an input lens group for guiding a light beam having a predetermined wavelength from the first plane to the beam splitter, an output lens group for guiding the light beam from the beam splitter to the second plane, a first concave mirror having an enlargement magnification, and a second concave mirror having a reduction magnification. The first concave mirror is arranged in an optical path of the light beam incident from the input lens group on the beam splitter and passing through the beam splitter to cause the passing light beam to be incident on the beam splitter again.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: August 18, 1998
    Assignee: Nikon Corporation
    Inventor: Yasuhiro Oomura
  • Patent number: 5668672
    Abstract: This invention relates to a catadioptric optical system in which, a large numerical aperture is attained on the image side and, while securing a sufficient working distance, the size of the beam splitter is reduced, thereby attaining a resolution of a quarter micron unit, and an exposure apparatus using the same. In order to form a reduced image of a pattern of a first surface on a second surface, this catadioptric optical system comprises, at least, a first lens group, a beam splitter, a concave mirror having an enlarging magnification, and a second lens group. These constitutional elements of the catadioptric optical system are disposed such that light from the first surface passes through the first lens group, the beam splitter, the concave mirror, the beam splitter, and the second lens group in this order.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: September 16, 1997
    Assignee: Nikon Corporation
    Inventor: Yasuhiro Oomura
  • Patent number: 5638218
    Abstract: Illumination light having passed a pattern formed on a first surface enters a beam splitter directly or through a refracting system. On this occasion, inside the beam splitter, at least part of the illumination light having passed through an entrance surface is transmitted or reflected by a direction changing surface and then passes through an exit/entrance surface. Subsequently, the illumination light first leaving the beam splitter is reflected by a reflective surface of a concave mirror and then again enters the beam splitter. On this occasion, inside the beam splitter, at least part of the illumination light having passed through the exit/entrance surface is reflected or transmitted by the direction changing surface then to pass through an exit surface. The illumination light thus again leaving the beam splitter is projected directly or through a refracting system onto a second surface to form an image of the pattern thereon.
    Type: Grant
    Filed: December 7, 1994
    Date of Patent: June 10, 1997
    Assignee: Nikon Corporation
    Inventor: Yasuhiro Oomura
  • Patent number: 5579167
    Abstract: A super-wide field eyepiece comprises, in succession from the incidence side of light, a first lens unit including a meniscus lens having its convex surface facing the incidence side and having positive or negative weak refractive power as a whole, a second lens unit including at least one lens surface having negative refractive power and having positive refractive power as a whole, and a third lens unit including at least two positive lenses and having positive refractive power as a whole, and an intermediate image is formed between the first lens unit and the second lens unit.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: November 26, 1996
    Assignee: Nikon Corporation
    Inventors: Yasuhiro Oomura, Yoshiyuki Shimizu
  • Patent number: 5236533
    Abstract: A resin-sandwiched metal laminate, a process and apparatus for producing the same and a process for producing a resin film for the resin-sandwiched metal laminate are disclosed. The laminate comprises a pair of face and back metal sheets and a resin layer and is capable of passing electricity between the face and back metal sheets, the resin layer being composed of electroconductive filler-containing resin regions at the side edges of the resin layer in the width direction of the metal sheets and an electroconductive filler-free resin center region provided between the electroconductive filler-containing resin regions at the side edges.
    Type: Grant
    Filed: October 16, 1991
    Date of Patent: August 17, 1993
    Assignee: Nippon Steel Corporation
    Inventors: Ryuusuke Imai, Michio Nashiwa, Yasuhiro Oomura, Ryouichi Matsuda, Michio Satou, Tamayuki Takeuchi
  • Patent number: 5188698
    Abstract: A resin-sandwiched metal laminate, a process and apparatus for producing the same and a process for producing a resin film for the resin-sandwiched metal laminate are disclosed. The laminate comprises a pair of face and back metal sheets and a resin layer and is capable of passing electricity between the face and back metal sheets, the resin layer being composed of electroconductive filler-containing resin regions at the side edges of the resin layer in the width direction of the metal sheets and an electroconductive filler-free resin center region provided between the electroconductive filler-containing resin regions at the side edges.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: February 23, 1993
    Assignee: Nippon Steel Corporation
    Inventors: Ryuusuke Imai, Michio Nashiwa, Yasuhiro Oomura, Ryouichi Matsuda, Michio Satou, Tamayuki Takeuchi
  • Patent number: 5084357
    Abstract: A resin-sandwiched metal laminate, a process and apparatus for producing the same and a process for producing a resin film for the resin-sandwiched metal laminate are disclosed. The laminate comprises a pair of face and back metal sheets and a resin layer and is capable of passing electricity between the face and back metal sheets, the resin layer being composed of electroconductive filler-containing resin regions at the side edges of the resin layer in the width direction of the metal sheets and an electroconductive filler-free resin center region provided between the electroconductive filler-containing resin regions at the side edges.
    Type: Grant
    Filed: January 4, 1990
    Date of Patent: January 28, 1992
    Assignee: Nippon Steel Corporation
    Inventors: Ryuusuke Imai, Michio Nashiwa, Yasuhiro Oomura, Ryouichi Matsuda, Michio Satou, Tamayuki Takeuchi