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).
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Patent number: 8775024Abstract: 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: GrantFiled: May 26, 2009Date of Patent: July 8, 2014Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Nobuo Hara, Yasuhiro Oomura
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Patent number: 8265820Abstract: 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: GrantFiled: May 26, 2009Date of Patent: September 11, 2012Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Nobuo Hara, Kenichi Watanabe, Yasuhiro Oomura, Takafumi Nonaka
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Patent number: 8251375Abstract: 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: GrantFiled: July 29, 2009Date of Patent: August 28, 2012Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Nobuo Hara, Yasuhiro Oomura
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Patent number: 8020878Abstract: 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: GrantFiled: July 29, 2009Date of Patent: September 20, 2011Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Nobuo Hara, Yasuhiro Oomura
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Publication number: 20100032914Abstract: 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: ApplicationFiled: July 29, 2009Publication date: February 11, 2010Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Nobuo Hara, Yasuhiro Oomura
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Publication number: 20100025944Abstract: 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: ApplicationFiled: July 29, 2009Publication date: February 4, 2010Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Nobuo Hara, Yasuhiro Oomura
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Publication number: 20090302557Abstract: 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: ApplicationFiled: May 26, 2009Publication date: December 10, 2009Applicant: Yamaha Hatsudoki Kabushiki KaishaInventors: Nobuo Hara, Yasuhiro Oomura
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Publication number: 20090299565Abstract: 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: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Applicant: Yamaha Hatsudoki Kabushiki KaishaInventors: Nobuo Hara, Kenichi Watanabe, Yasuhiro Oomura, Takafumi Nonaka
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Patent number: 5796524Abstract: 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: GrantFiled: November 30, 1995Date of Patent: August 18, 1998Assignee: Nikon CorporationInventor: Yasuhiro Oomura
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Patent number: 5668672Abstract: 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: GrantFiled: December 12, 1995Date of Patent: September 16, 1997Assignee: Nikon CorporationInventor: Yasuhiro Oomura
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Patent number: 5638218Abstract: 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: GrantFiled: December 7, 1994Date of Patent: June 10, 1997Assignee: Nikon CorporationInventor: Yasuhiro Oomura
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Patent number: 5579167Abstract: 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: GrantFiled: August 4, 1994Date of Patent: November 26, 1996Assignee: Nikon CorporationInventors: Yasuhiro Oomura, Yoshiyuki Shimizu
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Patent number: 5236533Abstract: 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: GrantFiled: October 16, 1991Date of Patent: August 17, 1993Assignee: Nippon Steel CorporationInventors: Ryuusuke Imai, Michio Nashiwa, Yasuhiro Oomura, Ryouichi Matsuda, Michio Satou, Tamayuki Takeuchi
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Patent number: 5188698Abstract: 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: GrantFiled: March 27, 1992Date of Patent: February 23, 1993Assignee: Nippon Steel CorporationInventors: Ryuusuke Imai, Michio Nashiwa, Yasuhiro Oomura, Ryouichi Matsuda, Michio Satou, Tamayuki Takeuchi
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Patent number: 5084357Abstract: 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: GrantFiled: January 4, 1990Date of Patent: January 28, 1992Assignee: Nippon Steel CorporationInventors: Ryuusuke Imai, Michio Nashiwa, Yasuhiro Oomura, Ryouichi Matsuda, Michio Satou, Tamayuki Takeuchi