Patents Assigned to MINEBEA MITSUMI INC.
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Patent number: 10175408Abstract: A planar illumination apparatus according to an embodiment includes a light guide plate that includes an emission surface that emits light and a reflective surface that is a surface opposite to the emission surface and that reflects light, a light blocking member that defines an effective region of the emission surface, and a light source arranged so as to face a light incident side surface of the light guide plate. In a portion of the effective region beside a light blocking region of the light blocking member, a first reflective surface is provided that includes a region that is inclined in a direction approaching the emission surface side with an increase in a distance from the light incident side surface.Type: GrantFiled: November 28, 2017Date of Patent: January 8, 2019Assignee: MINEBEA MITSUMI INC.Inventor: Takahito Yoshida
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Patent number: 10167439Abstract: There is provided an ultraviolet curable resin composition for a self-lubricating liner, including: a (meth)acrylate compound having an isocyanuric acid ring; at least one of (meth)acrylate having a phosphoric acid ester group and (meth)acrylate having a silane group: a polythiol compound; and a polytetrafluoroethylene resin as a solid lubricant.Type: GrantFiled: May 31, 2017Date of Patent: January 1, 2019Assignee: MINEBEA MITSUMI INC.Inventors: Hirotaka Tohyama, Tadahiko Karaki, Yuko Taguchi, Kentaro Ishikawa
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Publication number: 20180375413Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: ApplicationFiled: August 30, 2018Publication date: December 27, 2018Applicant: MINEBEA MITSUMI INC.Inventor: Minoru KURODA
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Patent number: 10153715Abstract: A motor driving control device includes: a motor driving unit for selectively energizing coils of a plurality of phases of a motor; a control circuit unit for outputting a driving control signal to the motor driving unit to control an operation of the motor driving unit; and a position detector corresponding to one phase out of the plurality of phases, the position detector outputting a position signal having a phase varying according to a position of a rotor of the motor, wherein when starting activation of the motor, the control circuit unit executes first control for causing the motor to perform short-circuit braking, and second control for starting a first lock operation in which the rotor is locked by energizing coils of a predetermined energization phase out of the plurality of phases with a first current value after the first control is executed, and when executing the first control, the control unit performs the short-circuit braking from the start of the short-circuit braking of the motor until variaType: GrantFiled: February 7, 2018Date of Patent: December 11, 2018Assignee: MINEBEA MITSUMI INC.Inventor: Masato Aoki
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Patent number: 10145417Abstract: A ball bearing is filled with a grease composition. The grease composition contains a synthetic oil other than a synthetic hydrocarbon oil, a synthetic hydrocarbon oil, a mineral oil, and a urea compound. The synthetic oil other than the synthetic hydrocarbon oil is contained in an amount of 10% by mass or more and 60% by mass or less when the total of the synthetic oil other than the synthetic hydrocarbon oil, the synthetic hydrocarbon oil and the mineral oil is taken as 100% by mass.Type: GrantFiled: June 29, 2017Date of Patent: December 4, 2018Assignee: MINEBEA MITSUMI INC.Inventor: Motojiro Tsuna
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Patent number: 10139552Abstract: A planar lighting device includes: a light guide plate; a plurality of light sources arranged in line along a longitudinal direction of a side end surface of the light guide plate, each of light sources including a pair of electrode terminals; and a mounting substrate on which the light sources are mounted, the mounting substrate including a conductive pattern including a plurality of pairs of lands to which the respective pairs of electrode terminals of the light sources are connected. The light sources are mounted such that, in a longitudinal direction of the light sources, a gap between an outer side of each of the pairs of electrode terminals and an outer side of corresponding one of the pairs of lands is smaller than a gap between an inner side of the pair of electrode terminals and an inner side of the corresponding pair of lands.Type: GrantFiled: December 28, 2015Date of Patent: November 27, 2018Assignee: MINEBEA MITSUMI INC.Inventors: Ippei Kusunoki, Makoto Furuta
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Patent number: 10141980Abstract: The wireless power transmission system includes a power supply device and a power receiving device. The power supply device includes a power supply coil, an inverter driving the power supply coil and a radio and a first processor. The power receiving device includes a resonant circuit wirelessly receiving electric power from the power supply coil, a rectifying circuit DB outputting a rectified voltage, a load, a radio unit and a second processor. The second processor transmits a communication packet in a predetermined period of time, the communication packet including information about a rectified voltage value and a circulation index value indicating transmission sequence. The first processor outputs a signal according to the rectified voltage value included in the communication packet every time the first processor receives the communication packet without delay.Type: GrantFiled: April 20, 2018Date of Patent: November 27, 2018Assignee: MINEBEA MITSUMI INC.Inventor: Hidetoshi Hijikata
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Patent number: 10120119Abstract: A planar illumination apparatus according to an embodiment includes a light source and a light guide plate. The light source includes a light emitting diode and a wavelength conversion material that is excited by light emitted from the light emitting diode so as to emit light, and emits white light. The light guide plate includes an incident end surface on which the light source is disposed, and an emission surface that emits light incident from the incident end surface. The light guide plate is provided with a light scattering unit on at least one of the emission surface and a rear surface opposed to the emission surface. The light scattering unit mainly scatters light emitted from the light emitting diode than light emitted from the wavelength conversion material.Type: GrantFiled: December 21, 2016Date of Patent: November 6, 2018Assignee: MINEBEA MITSUMI INC.Inventors: Kaoru Onda, Kenta Takakusaki
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Patent number: 10120122Abstract: A planar lighting device includes: a board that includes a strip-shaped section, and an external connection section, which protrudes from the central part of the strip-shaped section in a lateral direction of the strip-shaped section, and that is provided with an installation surface; and light source units that are provided with a plurality of light sources connected in series, that are each provided with a first electrode and a second electrode on both end sides, and that are arranged side by side on the installation surface at the strip-shaped section of the board in a longitudinal direction. Furthermore, the single external connection section is provided for the light source units, and the first electrodes in all the light source units, related to the single external connection section, are located farther from the external connection section than the second electrodes in the light source units.Type: GrantFiled: November 6, 2017Date of Patent: November 6, 2018Assignee: MINEBEA MITSUMI INC.Inventors: Takashi Edamitsu, Makoto Furuta
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Patent number: 10113583Abstract: A rolling bearing for a turbocharger according to an embodiment includes an outer ring, a first inner ring, a second inner ring, a plurality of rolling elements, a first retainer and a second retainer. The outer ring has a cylindrical shape and has two outer ring raceway surfaces. The first inner ring has a first inner ring raceway surface. The second inner ring has a second inner ring raceway surface. The first retainer holds a plurality of rolling elements. The second retainer holds a plurality of rolling elements. The outer peripheral surface at one end of the outer ring has a first plane extending in the axial direction, and a groove is formed from the first plane along a radial direction perpendicular to the first plane.Type: GrantFiled: August 10, 2017Date of Patent: October 30, 2018Assignee: MINEBEA MITSUMI INC.Inventor: Kazuhito Ozawa
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Patent number: 10113590Abstract: A ball bearing unit for a turbocharger according to an embodiment includes: an outer ring, a first inner ring, a second inner ring, a first machined retainer and a second machined retainer. The outer ring has an inner peripheral surface provided with an outer ring raceway surface at one end side and an outer ring raceway surface at another end side. At least one of the first machined retainer and the second machined retainer includes a plurality of pockets that hold the plurality of balls in a rollable manner in a circumferential direction. Each of the pockets has a diameter of equal to or more than 1.03 times and equal to or less than 1.07 times of a diameter of the balls.Type: GrantFiled: August 17, 2017Date of Patent: October 30, 2018Assignee: MINEBEA MITSUMI INC.Inventors: Kazuhito Ozawa, Yusuke Asai
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Patent number: 10114506Abstract: There is provided a portable apparatus capable of detecting a touch position where a user touches the portable apparatus and a touch strength with which the user touches the portable apparatus. The portable apparatus includes: a rectangular frame on which a display panel unit is to be mounted; four touch detection-dedicated legs respectively extending from vicinities of four corners of the frame; a first strain gage attached to each of the touch detection-dedicated legs; and a calculation unit that finds the touch position and the touch strength based on an output of the first strain gage.Type: GrantFiled: December 16, 2016Date of Patent: October 30, 2018Assignee: MINEBEA MITSUMI INC.Inventors: Satoshi Sato, Naoyuki Terada, Kazumasa Adachi, Makoto Furuta, Takahiro Shimura, Shigeyuki Adachi
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Patent number: 10090737Abstract: A stator for an electrical machine with a stator body (2, 102) and a ground contact (3, 103) which is electrically connected to the stator body, wherein the stator body is arranged in a motor housing (4, 104), which is formed from plastic material. In order to have a compact stator that is easy to install and at the same time has a reliable contact to a ground contact, it is provided that the motor housing has a stator holder (7, 107), which receives the stator body in the operating position, and is located on the inner surface of at least one of its housing parts, and to arrange and fix the ground contact at the inner circumference of the stator holder, facing the stator body, so that the stator body can be electronically contacted by the ground contact.Type: GrantFiled: June 6, 2014Date of Patent: October 2, 2018Assignee: MINEBEA MITSUMI INC.Inventors: Helmut Schneider, Jurgen Schill
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Patent number: 10082615Abstract: A planar illumination apparatus according to an embodiment includes a plurality of light sources, a light guide plate, a wiring substrate, a light diffusion sheet, a fixing member and an optical sheet. The light guide plate has a light entrance end surface and two main surfaces and emits, from at least one of the two main surfaces, the light entering the light entrance end surface. The wiring substrate extends so as to cover the light entrance end surface. The light diffusion sheet is arranged in a direction perpendicular to the main surfaces, one end portion of the light diffusion sheet running on the wiring substrate. The fixing member is arranged to cover the light diffusion sheet. The optical sheet is arranged between the light diffusion sheet and the fixing member. The light diffusion sheet includes a notch formed from the one end portion.Type: GrantFiled: December 28, 2016Date of Patent: September 25, 2018Assignee: MINEBEA MITSUMI INC.Inventor: Takahito Yoshida
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Patent number: 10082407Abstract: An angle detecting apparatus using a resolver disposed at a position where an external magnetic field is present on one side in an axial direction includes a rotor that is rotatable and made of a magnetic material, a magnetic permeability of the magnet material having an uniaxial anisotropy as an entirety, and a stator disposed to face the rotor, the stator including an exciting coil and a detection coil for detecting a magnetic flux generated by the exciting coil, the rotor being provided between the stator and the external magnetic field.Type: GrantFiled: December 14, 2016Date of Patent: September 25, 2018Assignee: MINEBEA MITSUMI INC.Inventors: Takaaki Ochiai, Takuji Yamada, Ichiro Sasada, Takuya Matsuda, Jisho Oshino
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Patent number: 10069391Abstract: A small DC motor includes a motor frame having a cylindrical portion, the cylindrical portion having a constant thickness and having a cross section in a shape that comprises four sides and connecting portions, each of the connecting portions connecting adjacent two of the four sides and being located inward from a corresponding corner in a quadrangle comprising the four sides; and a magnet having a circumferential surface on an inside thereof and having conformable contact with the motor frame on an outside thereof.Type: GrantFiled: July 29, 2015Date of Patent: September 4, 2018Assignee: MINEBEA MITSUMI INC.Inventor: Minoru Kuroda
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Patent number: 10047754Abstract: A brushless motor 5 of the present invention comprises: a rotor magnet 13 having a magnetized circumferential surface 13a comprising an upper circumferential surface 13a1 magnetized with a plurality of magnetic poles and a lower circumferential surface 13a2 magnetized with a plurality of magnetic poles; and a stator 30 having a stator stack 31 at least partially facing the lower circumferential surface 13a2, wherein the upper circumferential surface 13a1 of the rotor magnet 13 has a surface magnetic flux density of substantially the same level from a center of a magnetic pole until a vicinity of an adjacent magnetic pole, and the lower circumferential surface 13a2 of the rotor magnet 13 has a surface magnetic flux density decreasing from a center of a magnetic pole toward an adjacent magnetic pole.Type: GrantFiled: September 19, 2014Date of Patent: August 14, 2018Assignee: MINEBEA MITSUMI INC.Inventor: Akiharu Hiromoto
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Patent number: 10010467Abstract: The load detector includes: first and second beam type load cells which are supported on first and second support bases in a cantilever manner to have free ends; and a mounting part on which an object is to be placed, which includes first and second connection parts connected to the first and second beam type load cells, and which is disposed between the first and second beam type load cells. The free ends of the first and second beam type load cells face opposite directions to each other in an extending direction of the first beam type load cell. The first and second connection parts of the mounting part are respectively connected to the first and second beam type load cells on a side of the free ends of the first and second beam type load cells.Type: GrantFiled: December 8, 2017Date of Patent: July 3, 2018Assignee: MINEBEA MITSUMI INC.Inventors: Kunihiko Sato, Jun Hatcho
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Patent number: 9989761Abstract: There is provided a tilting mechanism. The tilting mechanism includes a drive source configured to drive a plate, a movement unit connected to the drive source, a conveyance unit configured to be moved linearly by the movement unit, and a plate support member to which the plate is fixed and which is partially engaged with the conveyance unit so that the plate support member is moved by the conveyance unit. The plate is moved linearly by linearly moving the conveyance unit together with the plate support member. Tilting operation of the plate is performed by tilting the plate support member, the tilting of the plate support member being caused by pushing the plate support member by the conveyance unit, which moves linearly in a state that the linear movement of the plate support member is stopped.Type: GrantFiled: October 7, 2016Date of Patent: June 5, 2018Assignee: MINEBEA MITSUMI INC.Inventor: Yasukazu Yomogita
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Patent number: D837748Type: GrantFiled: September 8, 2017Date of Patent: January 8, 2019Assignee: MINEBEA MITSUMI INC.Inventor: Takahiro Komiya