Patents by Inventor Hisao Kawakami

Hisao Kawakami 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: 9378913
    Abstract: The invention has an object to provide an operating device or vacuum switch which permits reduction in the overall height of the operating device and improves installation convenience. In order to solve the above problem, an operating device according to the present invention is characterized by including an electromagnet 14 located in a case 10 and fixed to the case 10 through a fixing part, a capacitor 16 located at an end in the case 10, a control board 18 located opposite to the capacitor 16 across the electromagnet 14, an auxiliary contact 34 located above the capacitor 16, a movable part to move by a magnetic force generated from the electromagnet 14, and a power transmission section to operate in conjunction with movement of the movable part. The capacitor 16 and the auxiliary contact 34 are located at heights not exceeding the height of the fixing part for fixing the electromagnet 14.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: June 28, 2016
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Sato, Ayumu Morita, Kenji Tsuchiya, Masato Yabu, Akio Nakazawa, Hisao Kawakami, Shigeru Yokosuka, Seiji Seya
  • Publication number: 20150318132
    Abstract: The invention has an object to provide an operating device or vacuum switch which permits reduction in the overall height of the operating device and improves installation convenience. In order to solve the above problem, an operating device according to the present invention is characterized by including an electromagnet 14 located in a case 10 and fixed to the case 10 through a fixing part, a capacitor 16 located at an end in the case 10, a control board 18 located opposite to the capacitor 16 across the electromagnet 14, an auxiliary contact 34 located above the capacitor 16, a movable part to move by a magnetic force generated from the electromagnet 14, and a power transmission section to operate in conjunction with movement of the movable part. The capacitor 16 and the auxiliary contact 34 are located at heights not exceeding the height of the fixing part for fixing the electromagnet 14.
    Type: Application
    Filed: June 3, 2013
    Publication date: November 5, 2015
    Inventors: Takashi SATO, Ayumu MORITA, Kenji TSUCHIYA, Masato YABU, Akio NAKAZAWA, Hisao KAWAKAMI, Shigeru YOKOSUKA, Seiji SEYA
  • Publication number: 20150198260
    Abstract: The object of the present invention is to provide a reliability-improved operation device, vacuum opening/closing device, and method for assembling an operation device. In order to attain the above-mentioned object, the operation device includes an electromagnet 40 generating operation power, a movable rod capable of being moved by the operation power generated from the electromagnet 40, a support member having a stopper member stopping the movement of the movable rod, a condenser 11 supplying electric current to the electromagnet 40, a control board 10, and a casing 1 housing the electromagnet 40, the support member, the condenser 11, and the control board 10 therein, the support member being fixed to a surface in the casing 1 which is different from surfaces of the casing onto which the condenser 11 and the control board 10 are fixed.
    Type: Application
    Filed: June 3, 2013
    Publication date: July 16, 2015
    Inventors: Takamitsu Hae, Ayumu Morita, Akio Nakazawa, Hisao Kawakami, Shigeru Yokosuka, Ryuichi Watanabe, Hironori Tonosaki, Kenji Tsuchiya
  • Patent number: 8110771
    Abstract: A vacuum insulating switch gear formed by integrally molding with epoxy resin of a vacuum double-break three-position type switch including a movable contact, a fixed contact, and a vacuum container composed of an insulating cylinder for covering the movable contact and the fixed contact, a lower lid for closing a lower part of the insulating cylinder, and an upper lid for closing an upper part of the insulating cylinder and an operation rod side of the movable contact, and an earthing switch with a vacuum closed container, comprising a first silicone rubber layer coated on an upper edge corner portion of each insulating cylinder composing the vacuum containers of the switch and the earthing switch, a self fusing insulating tape layer wound around an outer surface of the first silicone rubber layer, a second silicone rubber layer coated on the self fusing insulating tape layer and an outer periphery of the each insulating cylinder, a ring easing shield installed at a position corresponding to a lower end c
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: February 7, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Keiichi Takahashi, Kenji Tsuchiya, Akio Nakazawa, Hisao Kawakami
  • Publication number: 20100243611
    Abstract: A vacuum insulating switch gear formed by integrally molding with epoxy resin of a vacuum double-break three-position type switch including a movable contact, a fixed contact, and a vacuum container composed of an insulating cylinder for covering the movable contact and the fixed contact, a lower lid for closing a lower part of the insulating cylinder, and an upper lid for closing an upper part of the insulating cylinder and an operation rod side of the movable contact, and an earthing switch with a vacuum closed container, comprising a first silicone rubber layer coated on an upper edge corner portion of each insulating cylinder composing the vacuum containers of the switch and the earthing switch, a self fusing insulating tape layer wound around an outer surface of the first silicone rubber layer, a second silicone rubber layer coated on the self fusing insulating tape layer and an outer periphery of the each insulating cylinder, a ring easing shield installed at a position corresponding to a lower end c
    Type: Application
    Filed: February 17, 2010
    Publication date: September 30, 2010
    Applicant: HITACHI, LTD.
    Inventors: Keiichi TAKAHASHI, Kenji TSUCHIYA, Akio NAKAZAWA, Hisao KAWAKAMI