Patents by Inventor Keiko Yasui
Keiko Yasui 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: 20130306745Abstract: A water heater includes a hot water tank 57, a hot water-supplying heat exchanger 52, a water-entering conduit 64, a hot water-issuing conduit 65, entering-water temperature detecting device 67, control device 83 and scale suppressing device 76. The scale suppressing device 76 includes an inlet connection port 77 and an outlet connection port 78 which can be attached to and detached from the water-entering conduit 64. The control device 83 changes an entering-water set temperature T1 at which a heating operation is completed depending upon whether or not the scale suppressing device 76 is mounted. Therefore, a lifetime of a scale inhibitor is increased, and it is possible to reduce maintenance and maintenance costs required when the scale inhibitor is replaced or replenished.Type: ApplicationFiled: April 12, 2013Publication date: November 21, 2013Applicant: Panasonic CorporationInventors: Masahiro OHAMA, Muneto YAMADA, Yoshitsugu NISHIYAMA, Mitsuhiro SANO, Katsuhiko UNO, Keiko YASUI
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Patent number: 8367987Abstract: The flexible PTC heating element according to the invention has one of the following constitutions. A portion of an electrodes and a PTC resistor is impregnated into a flexible substrate. A flexible substrate is made of resin foam or rubber material having a concave/convex shape formed on the surface. The flexible PTC heating element has an elongation deformation portion disposed to at least one of an electrode and a PTC resistor. A flexible substrate has adhesiveness and either a flexible substrate or a flexible cover material has an elongation control portion. Therefore, the flexible PTC heating element is highly flexible and excellent in vibration durability.Type: GrantFiled: January 18, 2006Date of Patent: February 5, 2013Assignee: Panasonic CorporationInventors: Takahito Ishii, Keiko Yasui, Seishi Terakado, Kazuyuki Kohara, Mitsuru Yoneyama
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Patent number: 8180207Abstract: A heat exchanger comprises a substantially pillar sheathed heater, a substantially cylindrical case, and a spiral spring. The sheathed heater is accommodated in the case. The spring is provided so as to be wound around an outer peripheral surface of the sheathed heater. Thus, a spiral flow path is formed among an outer peripheral surface of the sheathed heater, an inner peripheral surface of the case, and the spring. The spring functions as a flow velocity conversion mechanism, a turbulent flow generation mechanism, a flow direction conversion mechanism, and an impurity removal mechanism. A water inlet and a water outlet are respectively arranged at positions eccentric from a central axis of the case on a side surface of the case.Type: GrantFiled: October 6, 2010Date of Patent: May 15, 2012Assignee: Panasonic CorporationInventors: Shigeru Shirai, Yasuhiro Umekage, Kazushige Nakamura, Mitsuyuki Furubayashi, Keiko Yasui
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Publication number: 20120103025Abstract: A washing machine includes a washing tub, a water tub, a drive unit, a feed-water unit, a drain unit, a water softening unit, a pH increasing unit, a pH decreasing unit, and a control unit. The water softening unit is disposed between the feed-water unit and the water tub, and is filled with a weak acid cation exchange material having weak acidic cation exchange groups with a pH from 7.5 to 14 at point of zero charge. The pH increasing unit increases the pH of washing water, and the pH decreasing unit decreases the pH of the washing water.Type: ApplicationFiled: July 23, 2010Publication date: May 3, 2012Applicant: PANASONIC CORPORATIONInventors: Kei Nambu, Keiko Yasui, Katsunori Zaizen
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Patent number: 7920779Abstract: A heat exchanger comprises a substantially pillar sheathed heater, a substantially cylindrical case, and a spiral spring. The sheathed heater is accommodated in the case. The spring is provided so as to be wound around an outer peripheral surface of the sheathed heater. Thus, a spiral flow path is formed among an outer peripheral surface of the sheathed heater, an inner peripheral surface of the case, and the spring. The spring functions as a flow velocity conversion mechanism, a turbulent flow generation mechanism, a flow direction conversion mechanism, and an impurity removal mechanism. A water inlet and a water outlet are respectively arranged at positions eccentric from a central axis of the case on a side surface of the case.Type: GrantFiled: December 9, 2004Date of Patent: April 5, 2011Assignee: Panasonic CorporationInventors: Shigeru Shirai, Yasuhiro Umekage, Kazushige Nakamura, Mitsuyuki Furubayashi, Keiko Yasui, Koji Oka
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Publication number: 20110036544Abstract: A heat exchanger comprises a substantially pillar sheathed heater, a substantially cylindrical case, and a spiral spring. The sheathed heater is accommodated in the case. The spring is provided so as to be wound around an outer peripheral surface of the sheathed heater. Thus, a spiral flow path is formed among an outer peripheral surface of the sheathed heater, an inner peripheral surface of the case, and the spring. The spring functions as a flow velocity conversion mechanism, a turbulent flow generation mechanism, a flow direction conversion mechanism, and an impurity removal mechanism. A water inlet and a water outlet are respectively arranged at positions eccentric from a central axis of the case on a side surface of the case.Type: ApplicationFiled: October 6, 2010Publication date: February 17, 2011Applicant: PANASONIC CORPORATIONInventors: Shigeru SHIRAI, Yasuhiro UMEKAGE, Kazushige NAKAMURA, Mitsuyuki FURUBAYASHI, Keiko YASUI
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Patent number: 7675004Abstract: A heating element includes a base substrate, a pair of electrodes, a resistor capable of generating heat, a conductive resin, a terminal member, a hot melt adhesion metal, a hot melt cohesion metal, and a lead wire. The pair of electrodes is provided on the base substrate, and the resistor is formed between the pair of electrodes. The conductive resin is provided on each of the electrodes, and the terminal member is provided on the conductive resin. The adhesion metal is provided on the terminal member, and the cohesion metal forms a molten phase along with the adhesion metal. An end of the lead wire is welded to the cohesion metal. The conductive resin is provided in the vicinity of the adhesion metal so as to be affected by heat of the adhesion metal.Type: GrantFiled: March 11, 2005Date of Patent: March 9, 2010Assignee: Panasonic CorporationInventors: Keizo Nakajima, Takahito Ishii, Keiko Yasui, Seishi Terakado, Takehiko Shigeoka, Kazuyuki Kohara, Mitsuru Yoneyama
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Publication number: 20070193996Abstract: A heating element includes a base substrate, a pair of electrodes, a resistor capable of generating heat, a conductive resin, a terminal member, a hot melt adhesion metal, a hot melt cohesion metal, and a lead wire. The pair of electrodes is provided on the base substrate, and the resistor is formed between the pair of electrodes. The conductive resin is provided on each of the electrodes, and the terminal member is provided on the conductive resin. The adhesion metal is provided on the terminal member, and the cohesion metal forms a molten phase along with the adhesion metal. An end of the lead wire is welded to the cohesion metal. The conductive resin is provided in the vicinity of the adhesion metal so as to be affected by heat of the adhesion metal.Type: ApplicationFiled: March 11, 2005Publication date: August 23, 2007Inventors: Keizo Nakajima, Takahito Ishii, Keiko Yasui, Seishi Terakado, Takehiko Shigeoka, Kazuyuki Kohara, Mitsuru Yoneyama
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Publication number: 20070143914Abstract: A heat exchanger comprises a substantially pillar sheathed heater, a substantially cylindrical case, and a spiral spring. The sheathed heater is accommodated in the case. The spring is provided so as to be wound around an outer peripheral surface of the sheathed heater. Thus, a spiral flow path is formed among an outer peripheral surface of the sheathed heater, an inner peripheral surface of the case, and the spring. The spring functions as a flow velocity conversion mechanism, a turbulent flow generation mechanism, a flow direction conversion mechanism, and an impurity removal mechanism. A water inlet and a water outlet are respectively arranged at positions eccentric from a central axis of the case on a side surface of the case.Type: ApplicationFiled: December 9, 2004Publication date: June 28, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Shigeru Shirai, Yasuhiro Umekage, Kazushige Nakamura, Mitsuyuki Furubayashi, Keiko Yasui, Koji Oka
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Publication number: 20060138123Abstract: The flexible PTC heating element according to the invention has one of the following constitutions. A portion of an electrodes and a PTC resistor is impregnated into a flexible substrate. A flexible substrate is made of resin foam or rubber material having a concave/convex shape formed on the surface. The flexible PTC heating element has an elongation deformation portion disposed to at least one of an electrode and a PTC resistor. A flexible substrate has adhesiveness and either a flexible substrate or a flexible cover material has an elongation control portion. Therefore, the flexible PTC heating element is highly flexible and excellent in vibration durability.Type: ApplicationFiled: January 18, 2006Publication date: June 29, 2006Inventors: Takahito Ishii, Keiko Yasui, Seishi Terakado, Kazuyuki Kohara, Mitsuru Yoneyama
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Patent number: 7049559Abstract: The flexible PTC heating element according to the invention has one of the following constitutions. A portion of an electrodes and a PTC resistor is impregnated into a flexible substrate. A flexible substrate is made of resin foam or rubber material having a concave/convex shape formed on the surface. The flexible PTC heating element has an elongation deformation portion disposed to at least one of an electrode and a PTC resistor. A flexible substrate has adhesiveness and either a flexible substrate or a flexible cover material has an elongation control portion. Therefore, the flexible PTC heating element is highly flexible and excellent in vibration durability.Type: GrantFiled: June 16, 2003Date of Patent: May 23, 2006Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Takahito Ishii, Keiko Yasui, Seishi Terakado, Kazuyuki Kohara, Mitsuru Yoneyama
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Publication number: 20050173414Abstract: The flexible PTC heating element according to the invention has one of the following constitutions. A portion of an electrodes and a PTC resistor is impregnated into a flexible substrate. A flexible substrate is made of resin foam or rubber material having a concave/convex shape formed on the surface. The flexible PTC heating element has an elongation deformation portion disposed to at least one of an electrode and a PTC resistor. A flexible substrate has adhesiveness and either a flexible substrate or a flexible cover material has an elongation control portion. Therefore, the flexible PTC heating element is highly flexible and excellent in vibration durability.Type: ApplicationFiled: June 16, 2003Publication date: August 11, 2005Inventors: Takahito Ishii, Keiko Yasui, Seishi Terakado, Kazuyuki Kohara, Mitsuru Yoneyama