Patents Assigned to Nishimoto Gosei Hanbai Co., Ltd.
  • Transformer and coil bobbin therefor
    Patent number: 6320492
    Abstract: A transformer comprising: a coil bobbin which includes a pair of core winding portions and a pair of coupling portions for coupling the core winding portions so as to space the core winding portions a predetermined distance from each other and is formed, on its whole outer periphery, with a groove; a winding which is obtained by winding a conductor around the groove of the coil bobbin a predetermined number of times; and a pair of wound cores each of which is obtained by winding an electromagnetic steel plate around each of the core winding portions of the coil bobbin a predetermined number of times; wherein an outer peripheral surface of each of opposite side walls of the groove at the core winding portions is curved so as to have an arcuate cross-sectional shape.
    Type: Grant
    Filed: September 16, 1999
    Date of Patent: November 20, 2001
    Assignees: WB Transformer Corporation, Nishimoto Gosei Hanbai Co., Ltd.
    Inventors: Tokutaro Kubomura, Shiro Kokura
  • Transformer and coil bobbin therefor
    Patent number: 6046663
    Abstract: A transformer comprising: a coil bobbin which includes a pair of core winding portions and a pair of coupling portions for coupling the core winding portions so as to space the core winding portions a predetermined distance from each other and is formed, on its whole outer periphery, with a groove; a winding which is obtained by winding a conductor around the groove of the coil bobbin a predetermined number of times; and a pair of wound cores each of which is obtained by winding an electromagnetic steel plate around each of the core winding portions of the coil bobbin a predetermined number of times; wherein an outer peripheral surface of each of opposite side walls of the groove at the core winding portions is curved so as to have an arcuate cross-sectional shape.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: April 4, 2000
    Assignees: Kawatetsu Electric Engineering Co., Ltd., Nishimoto Gosei Hanbai Co., Ltd.
    Inventors: Tokutaro Kubomura, Shiro Kokura
  • Coil bobbin for transformer
    Patent number: D790468
    Type: Grant
    Filed: August 20, 2014
    Date of Patent: June 27, 2017
    Assignee: NISHIMOTO GOSEI HANBAI CO., LTD.
    Inventor: Shiro Kokura