Patents by Inventor Ryuji Kawamoto
Ryuji Kawamoto 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: 11742739Abstract: A gimmick device according to one or more embodiments may include a gimmick and a voice coil motors (VCM). The VCM includes a casing, a permanent magnet, a yoke and iron-core, a bobbin, and a coil part. The gimmick is mounted to the casing on a movable side. The coil part includes a drive and primary coil serving as a drive coil and a primary coil of a displacement sensor including a differential transformer, the drive and primary coil being interlinked with a magnetic flux by the permanent magnet, and two secondary coils of the displacement sensor. The yoke and iron-core may be disposed in a central space defined in the coil part, and serves as an iron core of the displacement sensor.Type: GrantFiled: August 23, 2021Date of Patent: August 29, 2023Assignee: OMRON CORPORATIONInventor: Ryuji Kawamoto
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Patent number: 11658548Abstract: A voice coil motor (VCM) according to one or more embodiments may include a casing, a permanent magnet, a yoke and iron-core, a bobbin, and a coil part. The coil part may include a drive and primary coil serving as a drive coil and a primary coil of a displacement sensor including a differential transformer, the drive and primary coil being interlinked with a magnetic flux by the permanent magnet, and two secondary coils of the displacement sensor. The yoke and iron-core may be disposed in a central space defined in the coil part, and serves as an iron core of the displacement sensor.Type: GrantFiled: August 9, 2021Date of Patent: May 23, 2023Assignee: OMRON CorporationInventor: Ryuji Kawamoto
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Publication number: 20220103045Abstract: A voice coil motor (VCM) according to one or more embodiments may include a casing, a permanent magnet, a yoke and iron-core, a bobbin, and a coil part. The coil part may include a drive and primary coil serving as a drive coil and a primary coil of a displacement sensor including a differential transformer, the drive and primary coil being interlinked with a magnetic flux by the permanent magnet, and two secondary coils of the displacement sensor. The yoke and iron-core may be disposed in a central space defined in the coil part, and serves as an iron core of the displacement sensor.Type: ApplicationFiled: August 9, 2021Publication date: March 31, 2022Applicant: OMRON CorporationInventor: Ryuji KAWAMOTO
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Publication number: 20220103057Abstract: A gimmick device according to one or more embodiments may include a gimmick and a voice coil motors (VCM). The VCM includes a casing, a permanent magnet, a yoke and iron-core, a bobbin, and a coil part. The gimmick is mounted to the casing on a movable side. The coil part includes a drive and primary coil serving as a drive coil and a primary coil of a displacement sensor including a differential transformer, the drive and primary coil being interlinked with a magnetic flux by the permanent magnet, and two secondary coils of the displacement sensor. The yoke and iron-core may be disposed in a central space defined in the coil part, and serves as an iron core of the displacement sensor.Type: ApplicationFiled: August 23, 2021Publication date: March 31, 2022Applicant: OMRON CorporationInventor: Ryuji KAWAMOTO
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Publication number: 20180278130Abstract: A brushless motor includes: a rotor including a magnet with polarization directions arranged so as to be alternatingly inverted along a circumferential direction centered about a rotation shaft, the rotor being attached to a housing so as to be capable of rotating with the rotation shaft serving as the center of rotation; a stator including multiple coils arranged along the circumferential direction centered about the rotation shaft of the rotor so as to oppose the magnet, the stator causing the rotor to rotate due to interaction between a magnetic field generated by the magnet and magnetic fields generated by the coils due to current flowing in the coils; at least one rotation angle sensor that detects the rotation angle of the rotor; and a protection portion provided at a location farther from the rotation shaft than each rotation angle sensor and formed by a grounded conductor.Type: ApplicationFiled: November 9, 2016Publication date: September 27, 2018Applicant: OMRON CorporationInventors: Ryuji KAWAMOTO, Yoshiki FUKUTA, Fumiaki ABE
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Patent number: 8367280Abstract: A color filter including a first photo-spacer, and a second photo-spacer having a smaller film thickness than that of the first photo-spacer, wherein the second photo-spacer has a cross-sectional configuration whose longitudinal width is made greater than the lateral width. These photo-spacers are formed by making use of a photomask which includes a first aperture pattern for forming the first photo-spacer, a second aperture pattern for forming the second photo-spacer which has a smaller film thickness than that of the first photo-spacer, wherein an aperture of the second aperture pattern has a lateral width in the range 2.0-10.0 ?m and the ratio of lateral width to longitudinal width is confined to 11.25 or more.Type: GrantFiled: August 13, 2008Date of Patent: February 5, 2013Assignee: Toppan Printing Co., Ltd.Inventors: Atsuko Kamada, Ryuji Kawamoto, Junichi Shiraishi
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Patent number: 7581276Abstract: A cleaning pad is provided that is disposable into a toilet after cleaning. Also provided is a laminated body of cleaning pads, and a cleaning tool that holds the cleaning pad or the laminated body of cleaning pads. A cleaning pad is formed in such a manner that an intermediate layer containing water-degradable pulp is interposed between two layers of water-degradable nonwoven fabric or water-soluble pulp paper, and the cleaning pad comprises a cleaning composition. A laminated body of cleaning pads is provided by forming cleaning pads in layers, and a cleaning tool holds the cleaning pad or the laminated body of cleaning pads.Type: GrantFiled: June 20, 2005Date of Patent: September 1, 2009Assignee: Johnson Professional Co., Ltd.Inventors: Makoto Endo, Ryuji Kawamoto
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Publication number: 20090015957Abstract: A color filter including a first photo-spacer, and a second photo-spacer having a smaller film thickness than that of the first photo-spacer, wherein the second photo-spacer has a cross-sectional configuration whose longitudinal width is made greater than the lateral width. These photo-spacers are formed by making use of a photomask which includes a first aperture pattern for forming the first photo-spacer, a second aperture pattern for forming the second photo-spacer which has a smaller film thickness than that of the first photo-spacer, wherein an aperture of the second aperture pattern has a lateral width in the range 2.0-10.0 ?m and the ratio of lateral width to longitudinal width is confined to 11.25 or more.Type: ApplicationFiled: August 13, 2008Publication date: January 15, 2009Applicant: TOPPAN PRINTING CO., LTD.Inventors: Atsuko Kamada, Ryuji Kawamoto, Junichi Shiraishi
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Patent number: 7289696Abstract: An optical switch device (1) of such a type that the COUPLED state of light guides is switched by moving a light reflective member capable of securely preventing a movable body with the light reflective member from being displaced and allowing a reduction in thickness, comprising a pressing member (41) switching the movable body (2) with a prism mirror (10) mounted thereon between a clamped state and an unclamped state, a twisted spring (60) energizing the pressing member in a clamping direction, and a magnetic drive circuit (45) for clamping driving the pressing member (41) in the unclamped state against the torsion spring (60). The magnetic drive circuit (45) for clamping further comprises a clamp coil (72) on the fixed member (13) side and clamp magnets (70, 71) on the pressing member (41) side. The clamp magnets (70, 71) are disposed so as to hold the clamp coil (72) from the inside and outside of the opening thereof with the different poles thereof opposed to each other.Type: GrantFiled: August 3, 2004Date of Patent: October 30, 2007Assignee: Omron CorporationInventors: Eiji Fujisawa, Toshifumi Tsuruta, Ryuji Kawamoto, Yoichi Nakanishi, Yuichi Suzuki
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Publication number: 20070086697Abstract: To decrease an insertion loss by shortening an optical path length between an input side optical fiber and an output side optical fiber, and to decrease a stroke of a drive component. Input side optical fibers and a preliminary optical fiber arranged in parallel to one another and output side optical fibers arranged in parallel to one another are arranged in two stages, and a fixed prism 14 is arranged to be opposite to end surfaces of these. A preliminary optical fiber prism 15b is provided on one oblique surface of the fixed prism 14 to be opposite to a preliminary optical fiber 20, and a driven prism 15a can be made to come in contact with and separated from the one oblique surface of the fixed prism 14, and the driven prism 15a can be moved along the input side optical fibers.Type: ApplicationFiled: May 21, 2004Publication date: April 19, 2007Applicant: OMRON CorporationInventors: Ryo Yamamoto, Ilirokazu Tanaka, Masayasu Onishi, Yoichi Nakanishi, Ryuji Kawamoto, Yuichi Suzuki
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Patent number: 7194153Abstract: An optical switch device for driving a movable member mounting a light reflection member thereon by a magnetic drive circuit, wherein, in an optical waveguide switching device (1) as an optical switch device, a movable member (2) mounting thereon an optical waveguide switching prism mirror (2) is driven in an X direction by a magnetic drive circuit while being floated from a fixing-side member (13) in order to improve stability of a light outputting position. When the movable member (2) is moved to a desired position in the X direction, power supply to solenoids (45, 46) is stopped in a clamp mechanism (40), and a clamp plate (41) presses the movable member (2) against the fixing-side member (13) to fix it. A V-groove (30) formed in the movable member (2) and a V-groove (31) formed in the fixing-side member (13) mesh each other to position the movable member (2) in the X direction.Type: GrantFiled: May 26, 2004Date of Patent: March 20, 2007Assignee: Omron CorporationInventors: Masao Yajima, Hidekazu Yoneyama, Sadayoshi Yasuda, Yuji Fujita, Ryuji Kawamoto, Yoichi Nakanishi, Yuichi Suzuki
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Publication number: 20060280421Abstract: A lens array (38) is mounted on the front surface of an optical fiber array (32) holding optical fibers (35, 36) for input and emission. The lens array (38) includes: an input lens (40a) for converting a signal light (45) emitted from the optical fiber (35) into parallel light or converged light; and an output lens (40b) for converging the returned parallel light and connecting it to the optical fiber (36). A rectangular prism (34) having a form of a rectangular equilateral triangle is arranged in front of the optical fiber array (32) having the lens array (38). The signal light (45) emitted from the optical fiber (35) is totally reflected twice by the rectangular prism (34) and comes into the optical fiber (36). A transparent rectangular rotary block (33) is arranged between the lens array (38) and the rectangular prism (34). The outgoing signal light (45) and the returning signal light (45) have optical axis shifted by the rotary block (33) where the signal light passes.Type: ApplicationFiled: July 15, 2004Publication date: December 14, 2006Applicant: Omron CorporationInventors: Hirokazu Tanaka, Yoichi Nakanishi, Ryuji Kawamoto, Yuichi Suzuki
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Publication number: 20060245684Abstract: An optical switch device (1) of such a type that the coupled state of light guides is switched by moving a light reflective member capable of securely preventing a movable body with the light reflective member from being displaced and allowing a reduction in thickness, comprising a pressing member (41) switching the movable body (2) with a prism mirror (10) mounted thereon between a clamped state and an unclamped state, a twisted spring (60) energizing the pressing member in a clamping direction, and a magnetic drive circuit (45) for clamping driving the pressing member (41) in the unclamped state against the torsion spring (60). The magnetic drive circuit (45) for clamping further comprises a clamp coil (72) on the fixed member (13) side and clamp magnets (70, 71) on the pressing member (41) side. The clamp magnets (70, 71) are disposed so as to hold the clamp coil (72) from the inside and outside of the opening thereof with the different poles thereof opposed to each other.Type: ApplicationFiled: August 3, 2004Publication date: November 2, 2006Inventors: Eiji Fujisawa, Toshifuma Tsuruta, Ryuji Kawamoto, Yoichi Nakanishi, Yuichi Suzuki
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Publication number: 20060209396Abstract: [Object] A monitoring device for precisely taking out light for a monitor and having a simple structure and able to be made compact is provided. [Means for Resolution] A lens array 17 is attached to the tip face of an optical fiber array 12 holding optical fibers 14, 15 in parallel. A lens 19 is arranged in the lens array 17 so as to be opposed to the end face of each of the optical fibers 14, 15. A triangular prism 13 is arranged in front of the lens array 17. An incident-emitting face 22 of the triangular prism 13 is inclined with respect to the lens array 17. Signal light L emitted from the optical fiber 14 is converted into parallel light by the lens 19, and is incident to the triangular prism 13. After the signal light L is then totally reflected on the reflecting face 20, the signal light L is incident to a reflecting face 21. The incident angle of the signal light L incident to the reflecting face 21 is slightly smaller than a critical angle of the total reflection.Type: ApplicationFiled: July 12, 2004Publication date: September 21, 2006Applicant: OMRON CORPORATIONInventors: Hirokazu Tanaka, Tetsuya Onishi, Ryuji Kawamoto
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Patent number: 7095919Abstract: The present invention provides an optical switch that is provided with a plurality of output side optical transmission means 24; at least one input side optical transmission means 7; reflecting means 3 which moves to be positioned with respect to any one of the output side optical transmission means 24 and reflects an optical signal to the input side optical transmission means 7; and driving means 4 which moves the reflecting means 3 to each of the output side optical transmission means 24.Type: GrantFiled: January 11, 2005Date of Patent: August 22, 2006Assignee: OMRON CorporationInventors: Ryuji Kawamoto, Kazuki Fukuda, Hirokazu Tanaka, Tetsuya Onishi, Kiyoshi Imai, Yoichi Nakanishi, Yuichi Suzuki
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Publication number: 20050283931Abstract: A cleaning pad is provided that is disposable into a toilet after cleaning. Also provided is a laminated body of cleaning pads, and a cleaning tool that holds the cleaning pad or the laminated body of cleaning pads. A cleaning pad is formed in such a manner that an intermediate layer containing water-degradable pulp is interposed between two layers of water-degradable nonwoven fabric or water-soluble pulp paper, and the cleaning pad comprises a cleaning composition. A laminated body of cleaning pads is provided by forming cleaning pads in layers, and a cleaning tool holds the cleaning pad or the laminated body of cleaning pads.Type: ApplicationFiled: June 20, 2005Publication date: December 29, 2005Inventors: Makoto Endo, Ryuji Kawamoto
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Publication number: 20050175275Abstract: The present invention provides an optical switch that is provided with a plurality of output side optical transmission means 24; at least one input side optical transmission means 7; reflecting means 3 which moves to be positioned with respect to any one of the output side optical transmission means 24 and reflects an optical signal to the input side optical transmission means 7; and driving means 4 which moves the reflecting means 3 to each of the output side optical transmission means 24.Type: ApplicationFiled: January 11, 2005Publication date: August 11, 2005Applicant: OMRON CorporationInventors: Ryuji Kawamoto, Kazuki Fukuda, Hirokazu Tanaka, Tetsuya Onishi, Kiyoshi Imai, Yoichi Nakanishi, Yuichi Suzuki
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Publication number: 20030107528Abstract: A transmitter-receiver antenna of a radar is prepared as a parabolic antenna, and a wave reflector is constituted by a reflector array having a plurality of reflectors, and multiple beam widths of a transmission wave in the vicinity of the radar and a reflected wave in the vicinity of the electric wave reflector are set to be greater than a beam width C that can be blocked by a non-detection subject, such as a bird, that is excluded from detection subjects. Thus, it becomes possible to improve the identifying precision between the detection subject and the non-detection subject, and consequently to provide an immersion object detection device with high reliability that can reduce erroneous detections.Type: ApplicationFiled: November 1, 2002Publication date: June 12, 2003Inventors: Eiji Takemoto, Tadao Nishiguchi, Ryuji Kawamoto
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Patent number: 6535159Abstract: To provide an immersion object detection system capable of detecting an immersion object within a detection target area and specifying a position thereof irrespective of a short distance/long distance. A millimeter wave is irradiated to a detection area from a millimeter-wave RF unit through an antenna unit, and the reflected wave is detected. In the case that an immersion object exists in a short-distance area from a radar unit, the directly reflected waves from the immersion object is analyzed, thereby specifying the position of the immersion object, and in the case that the immersion object exists in a long-distance area from the radar unit, the position of the immersion object is specified in accordance with the position of the reflection member which cannot detect among the group of reflection members placed within the detection area.Type: GrantFiled: May 21, 2002Date of Patent: March 18, 2003Assignee: Omron CorporationInventors: Tadao Nishiguchi, Hiroshi Shimamoto, Ryuji Kawamoto
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Publication number: 20020009424Abstract: Disclosed herein are foamed gel air-treating compositions that have at least 50% water, between 1 and 15 percent soap surfactant, a volatile fragrance, at least 0.1 percent carbon, and a foam stabilizer. These compositions can fragrance a room as well as adsorb malodors in the room. Methods for forming these foamed gels are also disclosed.Type: ApplicationFiled: January 11, 2001Publication date: January 24, 2002Inventors: Thomas V. Kandathil, Ryuji Kawamoto, Maciej K. Tasz, John H. Engelman, Roberta R. Wu