Patents by Inventor Koji Muraoka
Koji Muraoka 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: 11505317Abstract: A flying object (drone) has a propeller drive unit provided in a fuselage thereof, and flies through the air by being driven by the propeller drive unit. The drone has a gravitational center movement device which is provided in the upper section of the fuselage and is capable of moving the total gravitational center position of the entire drone. The drone is equipped with a movement controller which moves the total gravitational center position to a target position by acquiring the total gravitational center position and controlling operation of the gravitational center movement device.Type: GrantFiled: February 7, 2019Date of Patent: November 22, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Hideo Murakami, Yoshitaka Minagawa, Koji Muraoka, Ayatoshi Yokokawa
-
Patent number: 11370560Abstract: A storage system for a flying object is equipped with a landing portion having a landing surface on which the flying object can land, and a storage main body for storing the flying object that has landed on the landing surface. The storage main body includes opening and closing portions that cover the landing surface. The storage system is further equipped with retaining mechanisms adapted to retain the flying object in a state of having landed on the landing surface from a direction perpendicular to the landing surface.Type: GrantFiled: September 25, 2018Date of Patent: June 28, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Shosei Nishikawa, Yuji Ishitsuka, Akinori Kita, Yuya Ishihara, Koji Muraoka
-
Publication number: 20210114728Abstract: A flying object (drone) has a propeller drive unit provided in a fuselage thereof, and flies through the air by being driven by the propeller drive unit. The drone has a gravitational center movement device which is provided in the upper section of the fuselage and is capable of moving the total gravitational center position of the entire drone. The drone is equipped with a movement controller which moves the total gravitational center position to a target position by acquiring the total gravitational center position and controlling operation of the gravitational center movement device.Type: ApplicationFiled: February 7, 2019Publication date: April 22, 2021Inventors: Hideo Murakami, Yoshitaka Minagawa, Koji Muraoka, Ayatoshi Yokokawa
-
Publication number: 20190106224Abstract: A storage system for a flying object is equipped with a landing portion having a landing surface on which the flying object can land, and a storage main body for storing the flying object that has landed on the landing surface. The storage main body includes opening and closing portions that cover the landing surface. The storage system is further equipped with retaining mechanisms adapted to retain the flying object in a state of having landed on the landing surface from a direction perpendicular to the landing surface.Type: ApplicationFiled: September 25, 2018Publication date: April 11, 2019Inventors: Shosei Nishikawa, Yuji Ishitsuka, Akinori Kita, Yuya Ishihara, Koji Muraoka
-
Patent number: 9731153Abstract: When distribution material is distributed over a target site on a ground surface from an aircraft, a distribution supporting apparatus offers support information to a pilot dropping the distribution material to efficiently distribute the distribution material. The distribution supporting apparatus includes: an input section to which information items on at least an aircraft velocity, an aircraft altitude, and a wind velocity are input; a computation section configured to compute a location at which the distribution material dropped from the aircraft arrives on the ground surface and a density distribution of the distribution material on the ground surface based on the information items input to the input section; and a display control section configured to display, on a display, the support information relating to the location and density distribution computed by the computation section.Type: GrantFiled: April 23, 2014Date of Patent: August 15, 2017Assignees: ShinMaywa Industries, Ltd., Japan Aerospace Exploration AgencyInventors: Yushi Goda, Tsubasa Yamada, Masatoshi Arimoto, Shinji Tagawa, Taiki Nakaie, Jun Adachi, Takeshi Ito, Koji Muraoka, Kohei Funabiki, Yuichi Matsuo
-
Publication number: 20140240147Abstract: When distribution material is distributed over a target site on a ground surface from an aircraft, a distribution supporting apparatus offers support information to a pilot dropping the distribution material to efficiently distribute the distribution material. The distribution supporting apparatus includes: an input section to which information items on at least an aircraft velocity, an aircraft altitude, and a wind velocity are input; a computation section configured to compute a location at which the distribution material dropped from the aircraft arrives on the ground surface and a density distribution of the distribution material on the ground surface based on the information items input to the input section; and a display control section configured to display, on a display, the support information relating to the location and density distribution computed by the computation section.Type: ApplicationFiled: April 23, 2014Publication date: August 28, 2014Applicants: ShinMaywa Industries, Ltd., Japan Aerospace Exploration AgencyInventors: Yushi GODA, Tsubasa YAMADA, Masatoshi ARIMOTO, Shinji TAGAWA, Taiki NAKAIE, Jun ADACHI, Takeshi ITO, Koji MURAOKA, Kohei FUNABIKI, Yuichi MATSUO
-
Patent number: 8449191Abstract: A sleeve support portion is arranged to support a sleeve having a rotating shaft inserted therein such that the rotating shaft is rotatable. A plurality of ribs extending in an axial direction is provided on an inner surface of the sleeve support portion. The ribs are preferably spaced from each other in a circumferential direction centered on the rotating shaft, and arranged to make contact with at least a portion of the sleeve. The ribs include a plurality of types of ribs, each type of the ribs having a different axial position of an axial edge, on an axially opening portion side, of a contact surface thereof which is arranged to make contact with the sleeve.Type: GrantFiled: August 17, 2009Date of Patent: May 28, 2013Assignee: Nidec CorporationInventors: Hiroyoshi Teshima, Koji Muraoka, Kiyoto Ida
-
Patent number: 8092195Abstract: An electric motor includes a stator portion, a rotor portion, and a bearing mechanism, wherein the rotor portion includes a rotor holder having a substantially cylindrical shape with a closed end, and a field magnet fixed to an inner circumference of the rotor holder; the stator portion includes a stator, a base portion to which the stator is fixed, and a magnetic member; and the magnetic member includes a cylindrical portion having a substantially cylindrical shape into which a lower end portion of an insulator of the stator is inserted, the lower end portion being a portion of an outer portion of the insulator and opposing the base portion, and a flat portion having a substantially annular shape which spreads outwardly in a radial direction from a lower edge of the cylindrical portion and opposes a lower edge of the field magnet.Type: GrantFiled: May 15, 2009Date of Patent: January 10, 2012Assignee: Nidec CorporationInventors: Koji Muraoka, Junpei Kitamura, Masashi Hirayama, Takuya Teramoto, Hiroyoshi Teshima, Yuji Yabuuchi
-
Publication number: 20110081258Abstract: In a motor, axially upper and lower end surfaces of the stator core are substantially covered by a first insulator and a second insulator, both of which are made of resin. A boss is arranged circumferentially between two neighboring teeth. Three bosses are arranged at three out of four positions defined between any two neighboring teeth. A conductor pin is inserted into each boss along an axial direction. The boss includes a hole extending axially upward from the axially lower end thereof, in which a conductor pin is fitted. An axially lower position of the conductor pin axially downwardly protrudes from the boss. The conductor pin is inserted into each of the notched portions arranged to the circuit board, and is soldered with the circuit board such that the conductor pin and the circuit board are electrically connected.Type: ApplicationFiled: December 13, 2010Publication date: April 7, 2011Applicant: NIDEC CORPORATIONInventors: Yusuke YOSHIDA, Koji MURAOKA
-
Publication number: 20100054965Abstract: A sleeve support portion is arranged to support a sleeve having a rotating shaft inserted therein such that the rotating shaft is rotatable. A plurality of ribs extending in an axial direction is provided on an inner surface of the sleeve support portion. The ribs are preferably spaced from each other in a circumferential direction centered on the rotating shaft, and arranged to make contact with at least a portion of the sleeve. The ribs include a plurality of types of ribs, each type of the ribs having a different axial position of an axial edge, on an axially opening portion side, of a contact surface thereof which is arranged to make contact with the sleeve.Type: ApplicationFiled: August 17, 2009Publication date: March 4, 2010Applicant: Nidec CorporationInventors: Hiroyoshi TESHIMA, Koji MURAOKA, Kiyoto IDA
-
Publication number: 20090285699Abstract: An electric motor includes a stator portion, a rotor portion, and a bearing mechanism, wherein the rotor portion includes a rotor holder having a substantially cylindrical shape with a closed end, and a field magnet fixed to an inner circumference of the rotor holder; the stator portion includes a stator, a base portion to which the stator is fixed, and a magnetic member; and the magnetic member includes a cylindrical portion having a substantially cylindrical shape into which a lower end portion of an insulator of the stator is inserted, the lower end portion being a portion of an outer portion of the insulator and opposing the base portion, and a flat portion having a substantially annular shape which spreads outwardly in a radial direction from a lower edge of the cylindrical portion and opposes a lower edge of the field magnet.Type: ApplicationFiled: May 15, 2009Publication date: November 19, 2009Applicant: Nidec CorporationInventors: Koji Muraoka, Junpei Kitamura, Masashi Hirayama, Takuya Teramoto, Hiroyoshi Teshima, Yuji Yabuuchi
-
Patent number: 7589444Abstract: A rotor unit of a brushless motor includes a substantially cylindrical rotor magnet and a rotor holder arranged to retain an outer circumferential portion of the rotor magnet. A stator unit of the same includes a stator core around which coils are wound and a Hall IC for sensing magnetic flux generated from the rotor magnet. The stator core includes teeth disposed at positions separated in the circumferential direction, each of which has an arm portion extending outward in the radial direction around which the coil is wound, and a stretching portion extending from the arm portion outward in the radial direction and in the circumferential direction on both sides.Type: GrantFiled: October 27, 2008Date of Patent: September 15, 2009Assignee: Nidec CorporationInventors: Hiroyoshi Teshima, Koji Muraoka, Akira Saiga
-
Publication number: 20090108716Abstract: A rotor unit of a brushless motor includes a substantially cylindrical rotor magnet and a rotor holder arranged to retain an outer circumferential portion of the rotor magnet. A stator unit of the same includes a stator core around which coils are wound and a Hall IC for sensing magnetic flux generated from the rotor magnet. The stator core includes teeth disposed at positions separated in the circumferential direction, each of which has an arm portion extending outward in the radial direction around which the coil is wound, and a stretching portion extending from the arm portion outward in the radial direction and in the circumferential direction on both sides.Type: ApplicationFiled: October 27, 2008Publication date: April 30, 2009Applicant: NIDEC CORPORATIONInventors: Hiroyoshi TESHIMA, Koji MURAOKA, Akira SAIGA
-
Patent number: 7384157Abstract: A projection type video display has a sensor which includes an image pick up device to take a projected image and the projection type video display projects an adjustment image to automatically implement the focus adjustment and the keystone distortion correction on the basis of output of the sensor.Type: GrantFiled: January 14, 2005Date of Patent: June 10, 2008Assignee: Sanyo Electric Co., Ltd.Inventors: Koji Muraoka, Naoki Kaise, Yoshichika Hirao, Toru Kirimura, Ryoji Nakanishi
-
Patent number: 7325933Abstract: A projection type video display apparatus in which a display device transmits light emitted from a light source to project a video written into the display device is characterized by comprising person detection means for detecting a person who exists within a projected video area, and control means for changing the state of the projected video when the person detection means detects the person.Type: GrantFiled: August 5, 2005Date of Patent: February 5, 2008Assignee: Sanyo Electric Co., LtdInventors: Naoki Kaise, Koji Muraoka, Toru Kirimura
-
Publication number: 20060028624Abstract: A projection type video display apparatus in which a display device transmits light emitted from a light source to project a video written into the display device is characterized by comprising person detection means for detecting a person who exists within a projected video area, and control means for changing the state of the projected video when the person detection means detects the person.Type: ApplicationFiled: August 5, 2005Publication date: February 9, 2006Applicant: SANYO ELECTRIC CO., LTD.Inventors: Naoki Kaise, Koji Muraoka, Toru Kirimura
-
Publication number: 20050157270Abstract: A projection type video display has a sensor which includes an image pick up device to take a projected image and the projection type video display projects an adjustment image to automatically implement the focus adjustment and the keystone distortion correction on the basis of output of the sensor.Type: ApplicationFiled: January 14, 2005Publication date: July 21, 2005Applicant: SANYO ELECTRIC CO., LTD.Inventors: Koji Muraoka, Naoki Kaise, Yoshichika Hirao, Toru Kirimura, Ryoji Nakanishi
-
Patent number: 6514675Abstract: An optical disk is provided by bonding two substrates to each using a radiation-hardening resin, and leveling and hardening the resin. In an optical recording medium manufacturing apparatus including lamps for emitting radiation to two disks attached to each other with a radiation-hardening resin layer sandwiched therebetween, and a rotation arm for supporting and rotating the two disks to allow the disks to traverse the emission area of the lamps, light source centers of the lamps are positioned radially outside a rotation locus of the center of the disks attached to each other, said locus being drawn while the disks are supported by the rotation arm.Type: GrantFiled: September 27, 2000Date of Patent: February 4, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshiyuki Fujioka, Hideo Matsumoto, Norihide Higaki, Koji Muraoka, Hiroyuki Fukuno
-
Patent number: 5377212Abstract: A short-wavelength laser having a stable output and an optical information processing system capable of high-density recording are disclosed. A solid-state laser is used as a light source, and a nonlinear optical crystal is arranged in a resonator in order to produce a short wavelength by means of a solid-state laser. The retardation of the nonlinear optical crystal is controlled by determining the length of the nonlinear optical crystal. A solid-state laser device having a stable output with the noise removed from a pumping power light source is also provided. Further, the solid-state laser device is used as a light source for the optical information processing system, and the light of irrelevant wavelengths contained in the light from the solid-state laser device are removed by a device having the ability to select wavelengths. Thus, not only a stable light source with a short wavelength but also an optical information processing system capable of high-density recording are realized.Type: GrantFiled: October 16, 1992Date of Patent: December 27, 1994Assignees: Hitachi, Ltd., Hitachi Metals, Ltd.Inventors: Kimio Tatsuno, Tetsuo Andou, Tsuyoshi Miyai, Sten Helmfrid, Masahiko Takahashi, Koji Muraoka, Shigeru Nakamura
-
Patent number: 5257108Abstract: A video signal process circuit which stretches the black level of a signal voltage for a dark picture and the white level of the signal voltage for a bright picture so as to improve visual contrast and reproduce a clear picture even when a light valve with a narrow dynamic range such as a liquid crystal projector is used.Type: GrantFiled: August 5, 1991Date of Patent: October 26, 1993Assignee: Koji MuraokaInventor: Koji Muraoka