Patents by Inventor Nobuyoshi Makio
Nobuyoshi Makio 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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Publication number: 20070108192Abstract: An induction heating apparatus wherein an electrostatic shield and the low-potential portion of an inverter circuit are electrically connected securely is provided. The induction heating apparatus in accordance with the present invention comprises a top plate 11 on which a matter 14 to be heated is placed, an induction heating coil 12 for induction heating the matter 14 to be heated, driving means 19 for driving the induction heating coil 12, and a stationary plate 15 and a cover for stationary plate 18 provided between the matter 14 to be heated and the induction heating coil 12, wherein connection portions 17a each integrated with a connection terminal 17 are electrically connected to the electrostatic shield 16 provided on the stationary plate 15 using a conductive adhesive, and the connection parts are held between the stationary plate 15 and the cover for stationary plate 18. With this configuration, the connection parts can be held securely and stably.Type: ApplicationFiled: January 11, 2007Publication date: May 17, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Akira KATAOKA, Izuo HIROTA, Katsuyuki AIHARA, Nobuyoshi MAKIO
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Patent number: 7176423Abstract: An induction heating apparatus wherein an electrostatic shield and the low-potential portion of an inverter circuit are electrically connected securely is provided. The induction heating apparatus in accordance with the present invention comprises a top plate 11 on which a matter 14 to be heated is placed, an induction heating coil 12 for induction heating the matter 14 to be heated, driving means 19 for driving the induction heating coil 12, and a stationary plate 15 and a cover for stationary plate 18 provided between the matter 14 to be heated and the induction heating coil 12, wherein connection portions 17a each integrated with a connection terminal 17 are electrically connected to the electrostatic shield 16 provided on the stationary plate 15 using a conductive adhesive, and the connection parts are held between the stationary plate 15 and the cover for stationary plate 18. With this configuration, the connection parts can be held securely and stably.Type: GrantFiled: August 1, 2003Date of Patent: February 13, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Kataoka, Izuo Hirota, Katsuyuki Aihara, Nobuyoshi Makio
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Patent number: 7173224Abstract: An induction heating apparatus with high safety is provided in which leakage current is prevented from flowing to the human body and there is no possibility of an electric shock even when an electrostatic shielding member does not sufficiently perform its function. The driving apparatus of the present invention is an induction heating apparatus in which the electrostatic shielding member is provided between an object to be heated and an induction heating coil where sensing portion for sensing the conduction condition of the electrostatic shielding member is provided, and driving portion for driving the induction heating coil is controlled through sensing by the sensing portion.Type: GrantFiled: November 23, 2005Date of Patent: February 6, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Kataoka, Izuo Hirota, Katsuyuki Aihara, Nobuyoshi Makio
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Patent number: 7145116Abstract: An induction heating coil having little high-frequency loss and producing little hast is easily manufactured by covering a conductor with a first insulating material to form a wire, then bundling and twisting such wires to form a stranded wire, covering the outer surface of the stranded wire with a second insulating material to form a coil wire, winding the coil wire a certain number of turns into a coil portion having a certain shape. The end portion of the coil portion and a connecting portion are heated with Joule heat while applying pressure to the end portion at the same time, so that the first and second insulating materials are fused and pressure-bonded to the conductor. Thus a terminal portion for the external connection of the coil portion is fixed while keeping the electrical connection with the conductor. Accordingly, an induction heating coil of low cost and stable quality can be easily manufactured.Type: GrantFiled: August 13, 2003Date of Patent: December 5, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Toshihiro Keishima, Akira Kataoka, Katsuyuki Aihara, Nobuyoshi Makio, Kazuya Gotou
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Patent number: 7057144Abstract: In an induction heating apparatus, in order to decrease the buoyancy exerted on an object to be heated which is made of a material having high electrical conductivity and low magnetic permeability, such as aluminum, an electrical conductor is provided between a heating coil and the object to be heated, thereby increasing the equivalent series resistance of the heating coil. Hence, the current of the heating coil, which is required for obtaining a desired heating output, is decreased, whereby the buoyancy of the object to be heated can be decreased. In addition, the electrical conductor is divided into two halves, and they are arranged in a circular arc form with a clearance provided therebetween and made close contact with the bottom face of a plate, whereby the temperature rise of the electrical conductor can be restricted.Type: GrantFiled: February 21, 2003Date of Patent: June 6, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Izuo Hirota, Atsushi Fujita, Takahiro Miyauchi, Yuji Fujii, Akira Kataoka, Katsuyuki Aihara, Nobuyoshi Makio
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Publication number: 20060081615Abstract: An induction heating apparatus with high safety is provided in which leakage current is prevented from flowing to the human body and there is no possibility of an electric shock even when an electrostatic shielding member does not sufficiently perform its function. The driving apparatus of the present invention is an induction heating apparatus in which the electrostatic shielding member is provided between an object to be heated and an induction heating coil where sensing portion for sensing the conduction condition of the electrostatic shielding member is provided, and driving portion for driving the induction heating coil is controlled through sensing by the sensing portion.Type: ApplicationFiled: November 23, 2005Publication date: April 20, 2006Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Kataoka, Izuo Hirota, Katsuyuki Aihara, Nobuyoshi Makio
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Patent number: 7009159Abstract: An induction heating apparatus with high safety is provided in which leakage current is prevented from flowing to the human body and there is no possibility of an electric shock even when an electrostatic shielding member does not sufficiently perform its function. The driving apparatus of the present invention is an induction heating apparatus in which the electrostatic shielding member is provided between an object to be heated and an induction heating coil where sensing portion for sensing the conduction condition of the electrostatic shielding member is provided, and driving portion for driving the induction heating coil is controlled through sensing by the sensing portion.Type: GrantFiled: March 19, 2003Date of Patent: March 7, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akira Kataoka, Izuo Hirota, Katsuyuki Aihara, Nobuyoshi Makio
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Publication number: 20050284862Abstract: An induction heating coil having little high-frequency loss and producing little hast is easily manufactured by covering a conductor with a first insulating material to form a wire, then bundling and twisting such wires to form a stranded wire, covering the outer surface of the stranded wire with a second insulating material to form a coil wire, winding the coil wire a certain number of turns into a coil portion having a certain shape. The end portion of the coil portion and a connecting portion are heated with Joule heat while applying pressure to the end portion at the same time, so that the first and second insulating materials are fused and pressure-bonded to the conductor. Thus a terminal portion for the external connection of the coil portion is fixed while keeping the electrical connection with the conductor. Accordingly, an induction heating coil of low cost and stable quality can be easily manufactured.Type: ApplicationFiled: August 13, 2003Publication date: December 29, 2005Applicant: Matsushita Eletric Industrial Co., Ltd.Inventors: Toshihiro Keishima, Akira Kataoka, Katsuyuki Aihara, Nobuyoshi Makio, Kazuya Gotou
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Publication number: 20050274717Abstract: An induction heating apparatus wherein an electrostatic shield and the low-potential portion of an inverter circuit are electrically connected securely is provided. The induction heating apparatus in accordance with the present invention comprises a top plate 11 on which a matter 14 to be heated is placed, an induction heating coil 12 for induction heating the matter 14 to be heated, driving means 19 for driving the induction heating coil 12, and a stationary plate 15 and a cover for stationary plate 18 provided between the matter 14 to be heated and the induction heating coil 12, wherein connection portions 17a each integrated with a connection terminal 17 are electrically connected to the electrostatic shield 16 provided on the stationary plate 15 using a conductive adhesive, and the connection parts are held between the stationary plate 15 and the cover for stationary plate 18. With this configuration, the connection parts can be held securely and stably.Type: ApplicationFiled: August 1, 2003Publication date: December 15, 2005Inventors: Akira Kataoka, Izuo Hirota, Katsuyuki Aihara, Nobuyoshi Makio
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Publication number: 20050115957Abstract: An induction heating apparatus with high safety is provided in which leakage current is prevented from flowing to the human body and there is no possibility of an electric shock even when an electrostatic shielding member does not sufficiently perform its function. The driving apparatus of the present invention is an induction heating apparatus in which the electrostatic shielding member is provided between an object to be heated and an induction heating coil where sensing means for sensing the conduction condition of the electrostatic shielding member is provided, and driving means for driving the induction heating coil is controlled through sensing by the sensing means.Type: ApplicationFiled: March 19, 2003Publication date: June 2, 2005Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTDInventors: Akira Kataoka, Izuo Hirota, Katsuyuki Aihara, Nobuyoshi Makio
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Publication number: 20040245244Abstract: In an induction heating apparatus, in order to decrease the buoyancy exerted on an object to be heated which is made of a material having high electrical conductivity and low magnetic permeability, such as aluminum, an electrical conductor is provided between a heating coil and the object to be heated, thereby increasing the equivalent series resistance of the heating coil. Hence, the current of the heating coil, which is required for obtaining a desired heating output, is decreased, whereby the buoyancy of the object to be heated can be decreased. In addition, the electrical conductor is divided into two halves, and they are arranged in a circular arc form with a clearance provided therebetween and made close contact with the bottom face of a plate, whereby the temperature rise of the electrical conductor can be restricted.Type: ApplicationFiled: April 5, 2004Publication date: December 9, 2004Inventors: Izuo Hirota, Atsushi Fujita, Takahiro Miyauchi, Yuji Fujii, Akira Kataoka, Katsuyuki Aihara, Nobuyoshi Makio