Patents by Inventor Toru Kojima
Toru Kojima 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: 11951521Abstract: After an annular plate is blanked from a metal flat plate in a blanking step, an inner peripheral portion of the annular plate is deformed upward in a burring step. As a result, a hat-shaped intermediate product having an upstanding tubular portion and an annular plate portion is formed. After that, an outer peripheral portion of the annular plate portion is folded step by step toward an inner peripheral side of the annular plate portion. As a result, a folded portion composed of a first folded portion and a second folded portion is formed, whereby a connection portion having a second flange portion is formed.Type: GrantFiled: September 13, 2019Date of Patent: April 9, 2024Assignee: AISIN TAKAOKA CO., LTD.Inventor: Toru Kojima
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Publication number: 20240017859Abstract: A portable drone port that is portable and disposed on a landing surface for a drone includes a covering section configured to cover the landing surface and provided with markers of different sizes. The covering section includes a restraining section configured to restrain, on the covering section, the drone that lands on the covering section. The restraining section is hook-and-loop fasteners including a hook-and-loop fastener on one side disposed on the covering section and a hook-and-loop fastener on the other side disposed on the drone and configured to join to the hook-and-loop fastener on the one side.Type: ApplicationFiled: January 20, 2022Publication date: January 18, 2024Inventors: Toru KOJIMA, Satoshi MORI, Shinya KUNII, Shinichi MAKI, Katsumi TAKAGI, Tetsuya NAGASAWA
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Publication number: 20240012433Abstract: An aircraft position control system that keeps an aircraft at target coordinates in an inertial space with respect to a target landing point that moves includes an acceleration correction processing unit that, based on acceleration of the aircraft and an attitude of the aircraft, outputs first attitude correction acceleration for correcting the acceleration of the aircraft, a complementary filter that, based on the first attitude correction acceleration and inertial velocity of the aircraft, outputs second attitude correction acceleration in which a drift component included in the first attitude correction acceleration is removed, and a smoothing processing unit that, based on the second attitude correction acceleration and relative coordinates between the aircraft and the target landing point, outputs smoothed relative coordinates obtained by smoothing the relative coordinates.Type: ApplicationFiled: January 13, 2022Publication date: January 11, 2024Inventors: Toru KOJIMA, Satoshi MORI
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Publication number: 20230418310Abstract: An automatic landing system for a vertical take-off and landing aircraft includes: a camera mounted on a vertical take-off and landing aircraft; a relative-position acquisition unit configured to perform image processing on an image captured by the camera, the image including a marker group provided at a target landing point, to acquire a relative position between the vertical take-off and landing aircraft and the target landing point; and a control unit configured to control the vertical take-off and landing aircraft such that the relative position becomes zero, in which the marker group includes a plurality of markers that are arranged side by side and that have different center positions from each other, the markers are larger as arranged farther away from the target landing point, and the relative-position acquisition unit acquires the relative position based on a distance between the marker recognized in the image and the target landing point.Type: ApplicationFiled: January 13, 2022Publication date: December 28, 2023Inventors: Satoshi MORI, Toru KOJIMA, Katsumi TAKAGI
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Publication number: 20230406536Abstract: An aircraft position control system to make a position of an aircraft follow movement of a target landing point due to motion includes a motion quantity estimation processing unit that estimates a motion quantity of the target landing point, based on attitude correction acceleration for correcting attitude of the aircraft and a relative position between the aircraft and the target landing point, and a target information generation unit that outputs a target relative position between the aircraft and the target landing point to be achieved and target relative velocity between the aircraft and the target landing point to be achieved, based on the estimated motion quantity.Type: ApplicationFiled: January 13, 2022Publication date: December 21, 2023Inventors: Toru KOJIMA, Satoshi MORI, Katsumi TAKAGI
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Publication number: 20230409050Abstract: An aircraft control system includes a target instruction value calculation unit acquires a target instruction value to set an aircraft in a target state, a reference velocity calculation unit inputs, to a reference model in which reference velocity corresponding to a reference value of aircraft velocity is set uniquely as an output value according to an input value, a value based on the target instruction value as the input value. A relative velocity calculation unit calculates relative velocity of the aircraft to a target position, the relative velocity being used in control of the aircraft. An estimated disturbance quantity calculation unit calculates an estimated disturbance quantity acting on the aircraft, based on a difference between the relative velocity and the reference velocity, and a correction target instruction value calculation unit corrects the target instruction value, based on the estimated disturbance quantity calculated at a previous timing.Type: ApplicationFiled: January 13, 2022Publication date: December 21, 2023Inventors: Toru KOJIMA, Satoshi MORI
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Publication number: 20230027342Abstract: An automatic landing system includes an imaging device mounted on a vertical take-off and landing aircraft; a relative-position acquisition unit that performs image processing on an image of a marker at a target landing point, and that acquires a relative position between the aircraft and the target landing point; a relative-altitude acquisition unit for acquiring a relative altitude between the aircraft and the target landing point; and a control unit for controlling the aircraft in a plurality of control modes so that the relative position becomes zero. The control modes include a hovering mode in which the relative altitude of the aircraft is lowered to a predetermined relative altitude when the relative position is within a first threshold value. A transition to a landing mode occurs upon satisfying predetermined conditions including the relative position being within a predetermined threshold value less than the first threshold value.Type: ApplicationFiled: September 1, 2020Publication date: January 26, 2023Inventors: Toru KOJIMA, Masahiro HASHIMOTO
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Publication number: 20220382298Abstract: An aircraft position control system includes a feedback control unit configured to calculate a feedback manipulated variable of an aircraft by feedback control so that the aircraft heads toward a target landing point, based on at least the relative position and the relative velocity; a multi-value control unit configured to set, by referring to a switching line preliminarily provided in a manner passing through an origin of a coordinate plane whose orthogonal axes represent the relative position and the relative velocity and separating an acceleration region in which the relative velocity is to be increased and a deceleration region in which the relative velocity is to be decreased, an addition value that tends to increase the relative velocity when a coordinate point of the current relative position and the current relative velocity is located in the acceleration region to calculate a manipulated variable of the aircraftType: ApplicationFiled: September 1, 2020Publication date: December 1, 2022Inventor: Toru KOJIMA
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Publication number: 20210346931Abstract: After an annular plate is blanked from a metal flat plate in a blanking step, an inner peripheral portion of the annular plate is deformed upward in a burring step. As a result, a hat-shaped intermediate product having an upstanding tubular portion and an annular plate portion is formed. After that, an outer peripheral portion of the annular plate portion is folded step by step toward an inner peripheral side of the annular plate portion. As a result, a folded portion composed of a first folded portion and a second folded portion is formed, whereby a connection portion having a second flange portion is formed.Type: ApplicationFiled: September 13, 2019Publication date: November 11, 2021Applicant: AISIN TAKAOKA CO., LTD.Inventor: Toru KOJIMA
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Patent number: 9123938Abstract: The purpose of the present invention is to provide a nonaqueous-electrolyte battery that exhibits high charge/discharge performance, i.e. high input/output performance, over a long period of time. This nonaqueous-electrolyte battery, in which a nonaqueous electrolyte and a group of electricity-generation elements that each have a positive electrode, a negative electrode, and a separator that isolates said positive electrode and negative electrode are sealed inside a battery case, is characterized in that the negative electrodes contain graphite having an edge/surface ratio (fe), as defined by the following equation, of 0.03-0.1. fe=(2B/La+T/d002)/(2B/d100+T/d002). In this equation, B represents the mean grain diameter of the graphite, T represents the grain thickness, La represents the a-axis crystallite size, d002 represents the spacing between (002) planes, and d100 represents the spacing between (100) planes.Type: GrantFiled: August 26, 2010Date of Patent: September 1, 2015Assignee: Hitachi Automotive Systems, Ltd.Inventors: Hideki Sasaki, Toru Kojima
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Publication number: 20130224570Abstract: The purpose of the present invention is to provide a nonaqueous-electrolyte battery that exhibits high charge/discharge performance, i.e. high input/output performance, over a long period of time. This nonaqueous-electrolyte battery, in which a nonaqueous electrolyte and a group of electricity-generation elements that each have a positive electrode, a negative electrode, and a separator that isolates said positive electrode and negative electrode are sealed inside a battery case, is characterized in that the negative electrodes contain graphite having an edge/surface ratio (fe), as defined by the following equation, of 0.03-0.1. fe=(2B/La+T/d002)/(2B/d100+T/d002). In this equation, B represents the mean grain diameter of the graphite, T represents the grain thickness, La represents the a-axis crystallite size, d002 represents the spacing between (002) planes, and d100 represents the spacing between (100) planes.Type: ApplicationFiled: August 26, 2010Publication date: August 29, 2013Applicant: HITACHI VEHICLE ENERGY, LTD.Inventors: Hideki Sasaki, Toru Kojima
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Patent number: 8367243Abstract: In a lithium secondary battery, the electrode assembly includes a positive electrode and a negative electrode which are assembled together with a separator interposing between said both electrodes. Each of the electrodes includes an active material mixture layer portion and an active material mixture layer free-portion which are arranged on a surface of said metal foil. A relationship of B1<B2 is satisfied, and a value of (A1+A2)/(B2?B1) is set equal to or less than 4. Where B1 (mm) is a width of the active material mixture layer portion of the positive electrode; B2 (mm) is a width of the active material mixture layer portion of the negative electrode; and each of A1 (mm) in the positive electrode and A2 (mm) in the negative electrode is a deviation between a straight line linking both corners of the active material mixture layer-free portion in the length direction of the metal foil and an edge of the active material mixture layer-free portion at a middle point in the length direction of the metal foil.Type: GrantFiled: January 22, 2009Date of Patent: February 5, 2013Assignee: Hitachi Vehicle Energy, Ltd.Inventors: Takenori Ishizu, Toru Kojima
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Patent number: 8225546Abstract: To realize a root-preventing sheet with outstanding shape maintaining properties while being thin and light that even when affixed has no wrinkles, is difficult to tear, has excellent applicability, durability and adhesiveness and demonstrates definite root-preventing effects at low cost.Type: GrantFiled: October 30, 2007Date of Patent: July 24, 2012Assignee: Tajima Ryokka IncorporatedInventors: Kunio Tajima, Toru Kojima, Akihiro Sakamoto, Yoshiaki Gotou
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Publication number: 20090186278Abstract: In a lithium secondary battery, the electrode assembly includes a positive electrode and a negative electrode which are assembled together with a separator interposing between said both electrodes. Each of the electrodes includes an active material mixture layer portion and an active material mixture layer free-portion which are arranged on a surface of said metal foil. A relationship of B1<B2 is satisfied, and a value of (A1+A2)/(B2?B1) is set equal to or less than 4. Where B1 (mm) is a width of the active material mixture layer portion of the positive electrode; B2 (mm) is a width of the active material mixture layer portion of the negative electrode; and each of A1 (mm) in the positive electrode and A2 (mm) in the negative electrode is a deviation between a straight line linking both corners of the active material mixture layer-free portion in the length direction of the metal foil and an edge of the active material mixture layer-free portion at a middle point in the length direction of the metal foil.Type: ApplicationFiled: January 22, 2009Publication date: July 23, 2009Inventors: Takenori ISHIZU, Toru KOJIMA
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Publication number: 20080307701Abstract: To realize a root-preventing sheet with outstanding shape maintaining properties while being thin and light that even when affixed has no wrinkles, is difficult to tear, has excellent applicability, durability and adhesiveness and demonstrates definite root-preventing effects at low cost.Type: ApplicationFiled: October 30, 2007Publication date: December 18, 2008Applicant: Tajima Ryokka IncorporatedInventors: Kunio Tajima, Toru Kojima, Akihiro Sakamoto, Yoshiaki Gotou
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Patent number: 6382739Abstract: There is provided a brake control system for carrying out ABS control in which the brake hydraulic pressure is reduced by a brake unit in accordance with a difference between a pseudo vehicle body speed and each of wheel speeds so as to prevent wheel locking. A control unit is configured to detect an abnormality in output of wheel speed sensors, and to determine the pseudo vehicle body speed in accordance with outputs from the wheel sensors except the wheel determined as being abnormal. The control unit determines whether the abnormal wheel is a drive wheel or a non-drive wheel, and to reset the determination of abnormality under conditions differentiated in accordance with whether the abnormal wheel is a drive wheel or a non-drive wheel.Type: GrantFiled: May 25, 2000Date of Patent: May 7, 2002Assignees: Unisia Jecs Corporation, Nissan Motor Co., Ltd.Inventors: Nobuyuki Ohtsu, Toru Kojima, Yoshiyuki Izu
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Patent number: 6364427Abstract: There is provided an automotive brake control system capable of executing ABS control (skid control), in which when an abnormality such as superimposition of noise on the output of a wheel speed sensor occurs, a pseudo vehicle body speed is generated by wheel-speed sensor signal excluding an abnormal wheel-speed sensor signal. The automotive brake control system includes an abnormality judgment section which determines whether an abnormal wheel-speed sensor signal is included in the wheel-speed sensor signals. The abnormality judgment section cooperates with a pseudo vehicle body speed generating section for generating a pseudo vehicle body speed based on the wheel-speed sensor signals except the abnormal wheel-speed sensor signal when the abnormality judgment section determines that the abnormal wheel-speed signal is present.Type: GrantFiled: May 25, 2000Date of Patent: April 2, 2002Assignees: Unisia Jecs Corporation, Nissan Motor Co., Ltd.Inventors: Nobuyuki Ohtsu, Toru Kojima, Yoshiyuki Izu
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Patent number: 6292733Abstract: A vehicular brake controlling apparatus comprises: a brake unit to enable a suppression of boosting a braking liquid pressure independently of each wheel cylinder, each wheel cylinder operatively braking a corresponding one of vehicular front and rear road wheels according to the braking liquid pressure; a plurality of road wheel velocity sensors, each road wheel velocity sensor detecting a revolution velocity of the corresponding one of the road wheels and outputting a signal indicating the detected road wheel revolution velocity thereof; and a controller configured to be enabled to execute such a braking force distribution control function as to controllably operate the brake unit to suppress the boosting in the braking liquid pressure for the rear road wheels on the basis of a revolution velocity difference between the front and rear road wheels derived from the signals outputted from the respective road wheel velocity sensors when the revolution velocity difference is in excess of a predetermined start thType: GrantFiled: September 22, 1999Date of Patent: September 18, 2001Assignees: Unisia Jecs Corporation, Nissan Motor Co., Ltd.Inventors: Yoshitaka Sugiyama, Toru Kojima
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Patent number: 6099190Abstract: An apparatus for facilitating securing a component to a stationary bracket, including a mount recess formed in the component, a mount hole formed in the bracket, a sleeve fixed to the mount recess through an elastic bushing, a bolt extending through the mount hole and engaged in the sleeve, a projection positioned on the sleeve, and a guide provided on the bracket. The projection and the guide cooperate to align a threaded bore of the sleeve with the mount hole of the bracket when the component is mounted to the bracket.Type: GrantFiled: January 23, 1998Date of Patent: August 8, 2000Assignees: Unisia Jecs Corporation, Nissan Motor Co., Ltd.Inventors: Kazuyuki Honobe, Hideaki Takahashi, Masahiko Hara, Koji Morita, Toru Kojima
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Patent number: 5699467Abstract: An optical fiber complex overhead line including a spacer formed with a plurality of helical grooves in its outer periphery extending along the axial direction, each helical groove shaped to be able to accommodate at least two bundles of multi-core type optical fiber in the width direction of the groove, at least two bundles of multi-core type optical fiber accommodated in each of the helical grooves, a protective optical fiber covering accommodating the spacer, and a plurality of conductor strands arranged around the protective optical fiber covering.Type: GrantFiled: June 6, 1996Date of Patent: December 16, 1997Assignee: The Furukawa Electric Co., Ltd.Inventors: Toru Kojima, Koji Yoshida, Yukikatsu Aida