Patents by Inventor Masayuki Oki
Masayuki Oki 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: 11984732Abstract: A contactless electric power supply device of the present invention is provided with: multiple supply coils and an alternating current power source arranged on a fixed section; multiple receiving coils and a receiving circuit provided on a moving body; and a face-to-face power supply section provided for each of the multiple supply coils and configured to supply alternating current power from the alternating current power source to the supply coils only when detecting a face-to-face state between the supply coil and the receiving coil; wherein separation distances and lengths in the moving direction of the multiple supply coils and multiple receiving coils are set to satisfy face-to-face conditions, and a receiving circuit converts alternating current power received by at least one of the receiving coils in the face-to-face state and generates a receiving voltage at least equal to a driving voltage.Type: GrantFiled: December 1, 2015Date of Patent: May 14, 2024Assignee: FUJI CORPORATIONInventors: Masayuki Oki, Shinji Takikawa, Takeshi Nomura
-
Patent number: 11223238Abstract: A non-contact power feeding device includes multiple power feeding elements that are disposed spatially separated from one another in a movement direction, an AC power supply that supplies AC power to the power feeding elements, multiple power receiving elements that are provided in a moving body and that receive AC power in a non-contact manner, and a power receiving circuit that converts the AC power received by the power receiving elements and that outputs to an electrical load. When a length of the power feeding elements in the movement direction is LT, a separation distance between the power feeding elements is DT, a length of the power receiving elements in the movement direction is LR, and a separation distance between the power receiving elements is DR, the relationship DT?DR and the relationship (2×LR+DR)?LT are satisfied.Type: GrantFiled: June 10, 2020Date of Patent: January 11, 2022Assignee: FUJI CORPORATIONInventors: Takeshi Nomura, Shinji Takikawa, Masayuki Oki
-
Patent number: 11005295Abstract: A non-contact power feeding device includes multiple power feeding elements that are disposed spatially separated from one another in a movement direction, an AC power supply that supplies AC power to the power feeding elements, multiple power receiving elements that are provided in a moving body and that receive AC power in a non-contact manner, and a power receiving circuit that converts the AC power received by the power receiving elements and that outputs to an electrical load. When a length of the power feeding elements in the movement direction is LT, a separation distance between the power feeding elements is DT, a length of the power receiving elements in the movement direction is LR, and a separation distance between the power receiving elements is DR, the relationship DT?DR and the relationship (2×LR+DR)?LT are satisfied.Type: GrantFiled: September 18, 2015Date of Patent: May 11, 2021Assignee: FUJI CORPORATIONInventors: Takeshi Nomura, Shinji Takikawa, Masayuki Oki
-
Publication number: 20210012955Abstract: A contactless electric power supply device of the present invention is provided with: multiple supply coils and an alternating current power source arranged on a fixed section; multiple receiving coils and a receiving circuit provided on a moving body; and a face-to-face power supply section provided for each of the multiple supply coils and configured to supply alternating current power from the alternating current power source to the supply coils only when detecting a face-to-face state between the supply coil and the receiving coil; wherein separation distances and lengths in the moving direction of the multiple supply coils and multiple receiving coils are set to satisfy face-to-face conditions, and a receiving circuit converts alternating current power received by at least one of the receiving coils in the face-to-face state and generates a receiving voltage at least equal to a driving voltage.Type: ApplicationFiled: December 1, 2015Publication date: January 14, 2021Applicant: FUJI CORPORATIONInventors: Masayuki OKI, Shinji TAKIKAWA, Takeshi NOMURA
-
Patent number: 10873219Abstract: Contactless power supply device of the present invention includes: contactless power supply section that supplies AC power in a contactless manner; contactless power receiving section that receives the AC power in a contactless manner; first DC transformer circuit that transforms, to DC load voltage, DC reception-power voltage obtained from the contactless power receiving section and supplies the DC load voltage to first electric load, and that has a reverse transfer function of transferring regenerative power generated by the first electric load in a reverse direction; and second DC transformer circuit that transforms the DC reception-power voltage to DC load voltage and supplies the DC load voltage to second electric load. Accordingly, the generated regenerative power is allocated and made available to the other electric load, and a power storage section is not necessary, which suppresses an increase in the weight and size of the power-receiving-side device.Type: GrantFiled: September 30, 2016Date of Patent: December 22, 2020Assignee: FUJI CORPORATIONInventors: Shinichi Kato, Takeshi Nomura, Masayuki Oki
-
Patent number: 10797523Abstract: A non-contact power supply device of the present invention includes a power supply element provided in a power supply unit, an AC power supply circuit for supplying AC power to the power supply element, a power receiving element provided in the power receiving, a power receiving circuit for outputting a received voltage, obtained by converting AC power received by the power receiving element, to an electric load, a resonance element connected to at least one of the power supply element and the power receiving element to form a resonance circuit; a power supply substrate configured to include the AC power supply circuit, a power receiving substrate configured to include the power receiving circuit, and a resonant substrate configured to include the resonant element. The non-contact power supply device having a versatile substrate configuration can be provided for multiple types of power supply elements and power receiving elements having different characteristics.Type: GrantFiled: February 17, 2016Date of Patent: October 6, 2020Assignee: FUJI CORPORATIONInventors: Shinji Takikawa, Takeshi Nomura, Masayuki Oki
-
Publication number: 20200303962Abstract: A non-contact power feeding device includes multiple power feeding elements that are disposed spatially separated from one another in a movement direction, an AC power supply that supplies AC power to the power feeding elements, multiple power receiving elements that are provided in a moving body and that receive AC power in a non-contact manner, and a power receiving circuit that converts the AC power received by the power receiving elements and that outputs to an electrical load. When a length of the power feeding elements in the movement, direction is LT, a separation distance between the power feeding elements is DT, a length of the power receiving elements in the movement direction is LR, and a separation distance between the power receiving elements is DR, the relationship DT?DR and the relationship (2×LR+DR)?LT are satisfied.Type: ApplicationFiled: June 10, 2020Publication date: September 24, 2020Applicant: FUJI CORPORATIONInventors: Takeshi NOMURA, Shinji Takikawa, Masayuki Oki
-
Patent number: 10672551Abstract: A power feeding coil that configures a non-contact power feeding system is provided. The power feeding coil is provided with a coil through which an AC current of a specific frequency flows, and a core that forms a section of a circulating magnetic path, which is interlinked with the coil. In the coil, a wire having an insulating covering is wound around a conductor, and a covering thickness of the insulating covering is set so that the influence of a proximity effect that occurs at the specific frequency between adjacent portions of the wire is a predetermined amount or less. According to this configuration, it is possible to freely adjust a separation distance between portions of the conductor by altering the covering thickness; and the occurrence of AC loss caused by a proximity effect may be appropriately suppressed.Type: GrantFiled: March 28, 2016Date of Patent: June 2, 2020Assignee: FUJI CORPORATIONInventors: Masayuki Oki, Shinji Takikawa, Takeshi Nomura, Takahiro Jindo
-
Publication number: 20190372394Abstract: A non-contact feed connection unit of the embodiment includes: a power supply-side inductor having a power supply-side core and a power supply-side coil wound around the power supply-side core; a power receiving-side inductor having a power receiving-side core and a power receiving-side coil wound around the power receiving-side core; a power supply-side bracket section made of non-ferromagnetic metal material covering at least a portion of the outer surface of the power supply-side core; a power receiving-side bracket section made of non-ferromagnetic metal material covering at least a portion of the outer surface of the power receiving-side core; and a gap-covering section, formed integrally with the power supply-side bracket section or the power receiving-side bracket section using non-ferromagnetic metal material, covering an outer portion of a magnetic gap that is part of a magnetic loop formed by the power supply-side core and the power receiving-side core.Type: ApplicationFiled: November 15, 2016Publication date: December 5, 2019Applicant: FUJI CORPORATIONInventors: Masayuki OKI, Shinichi KATO, Takeshi NOMURA
-
Publication number: 20190288559Abstract: Contactless power supply device of the present invention includes: contactless power supply section that supplies AC power in a contactless manner; contactless power receiving section that receives the AC power in a contactless manner; first DC transformer circuit that transforms, to DC load voltage, DC reception-power voltage obtained from the contactless power receiving section and supplies the DC load voltage to first electric load, and that has a reverse transfer function of transferring regenerative power generated by the first electric load in a reverse direction; and second DC transformer circuit that transforms the DC reception-power voltage to DC load voltage and supplies the DC load voltage to second electric load. Accordingly, the generated regenerative power is allocated and made available to the other electric load, and a power storage section is not necessary, which suppresses an increase in the weight and size of the power-receiving-side device.Type: ApplicationFiled: September 30, 2016Publication date: September 19, 2019Applicant: FUJI CORPORATIONInventors: Shinichi KATO, Takeshi NOMURA, Masayuki OKI
-
Publication number: 20190044387Abstract: A non-contact power supply device of the present invention includes a power supply element provided in a power supply unit, an AC power supply circuit for supplying AC power to the power supply element, a power receiving element provided in the power receiving, a power receiving circuit for outputting a received voltage, obtained by converting AC power received by the power receiving element, to an electric load, a resonance element connected to at least one of the power supply element and the power receiving element to form a resonance circuit; a power supply substrate configured to include the AC power supply circuit, a power receiving substrate configured to include the power receiving circuit, and a resonant substrate configured to include the resonant element. The non-contact power supply device having a versatile substrate configuration can be provided for multiple types of power supply elements and power receiving elements having different characteristics.Type: ApplicationFiled: February 17, 2016Publication date: February 7, 2019Applicant: FUJI CORPORATIONInventors: Shinji TAKIKAWA, Takeshi NOMURA, Masayuki OKI
-
Publication number: 20180262063Abstract: A power feeding coil that configures a non-contact power feeding system is provided. The power feeding coil is provided with a coil through which an AC current of a specific frequency flows, and a core that forms a section of a circulating magnetic path, which is interlinked with the coil. In the coil, a wire having an insulating covering is wound around a conductor, and a covering thickness of the insulating covering is set so that the influence of a proximity effect that occurs at the specific frequency between adjacent portions of the wire is a predetermined amount or less. According to this configuration, it is possible to freely adjust a separation distance between portions of the conductor by altering the covering thickness; and the occurrence of AC loss caused by a proximity effect may be appropriately suppressed.Type: ApplicationFiled: March 28, 2016Publication date: September 13, 2018Applicant: FUJI MACHINE MFG. CO., LTD.Inventors: Masayuki OKI, Shinji TAKIKAWA, Takeshi NOMURA, Takahiro JINDO
-
Publication number: 20180241251Abstract: A non-contact power feeding device includes multiple power feeding elements that are disposed spatially separated from one another in a movement direction, an AC power supply that supplies AC power to the power feeding elements, multiple power receiving elements that are provided in a moving body and that receive AC power in a non-contact manner, and a power receiving circuit that converts the AC power received by the power receiving elements and that outputs to an electrical load. When a length of the power feeding elements in the movement direction is LT, a separation distance between the power feeding elements is DT, a length of the power receiving elements in the movement direction is LR, and a separation distance between the power receiving elements is DR, the relationship DT?DR and the relationship (2×LR+DR)?LT are satisfied.Type: ApplicationFiled: September 18, 2015Publication date: August 23, 2018Applicant: FUJI MACHINE MFG. CO., LTD.Inventors: Takeshi NOMURA, Shinji TAKIKAWA, Masayuki OKI
-
Publication number: 20170222493Abstract: A non-contact power supply device includes a non-contact power supply circuit supplying AC power in a non-contact manner with the circuit being configured by a power supply element disposed in a power supply section and a power receiving element disposed in a power receiving section capable of being relatively displaced with respect to the power supply section facing each other, a phase difference detecting section detecting a phase difference between a voltage phase of an AC voltage applied to the non-contact power supply circuit in the power supply section and a current phase of an AC current flowing through the power supply element, the phase difference changing depending on a relative positional relationship between the power supply element and the power receiving element, and a determination section determining the relative positional relationship between the power supply element and the power receiving element based on the phase difference.Type: ApplicationFiled: September 30, 2014Publication date: August 3, 2017Applicant: FUJI MACHINE MFG. CO., LTD.Inventors: Masayuki OKI, Takeshi NOMURA
-
Patent number: 9647308Abstract: Provided is a dielectric filter that can be anchored in a stable manner without causing damage even when there is variation in the size of the parts. With this dielectric filter, one surface of washers has a concave part, which is equipped with an edge part formed at the perimeter of the one surface, a floor surface provided at a lower position than the edge part, and a tapered part formed between the edge part and the floor surface. The washers are arranged on the upper surface of and fastened by means of screws to dielectric bodies with the concave parts facing the dielectric bodies, with sheet metal therebetween.Type: GrantFiled: August 12, 2013Date of Patent: May 9, 2017Assignee: Nokia Solutions and Networks OyInventors: Takasi Sumiyosi, Minoru Tachibana, Masayuki Oki
-
Publication number: 20150263402Abstract: Provided is a dielectric filter that can be anchored in a stable manner without causing damage even when there is variation in the size of the parts. With this dielectric filter, one surface of washers has a concave part, which is equipped with an edge part formed at the perimeter of the one surface, a floor surface provided at a lower position than the edge part, and a tapered part formed between the edge part and the floor surface. The washers are arranged on the upper surface of and fastened by means of screws to dielectric bodies with the concave parts facing the dielectric bodies, with sheet metal therebetween.Type: ApplicationFiled: August 12, 2013Publication date: September 17, 2015Inventors: Takasi Sumiyosi, Minoru Tachibana, Masayuki Oki
-
Patent number: D438183Type: GrantFiled: February 4, 2000Date of Patent: February 27, 2001Assignee: Hitachi, Ltd.Inventors: Atsutoshi Sato, Atsuhiko Urushihara, Masayuki Oki, Koji Suso, Masahiko Sato
-
Patent number: D445814Type: GrantFiled: February 4, 2000Date of Patent: July 31, 2001Assignee: Hitachi, Ltd.Inventors: Masayuki Oki, Atsuhiko Urushihara, Atsutoshi Sato, Koji Suso, Michiaki Ezure