Patents Assigned to Watoku Co., Ltd.
  • Spacer nut manufacturing method
    Patent number: 8262492
    Abstract: A spacer nut manufacturing method which does not use a NC lathe and which allows machining using existing press working equipment, involves a low parts supply cost, and which helps to achieve a high production efficiency at a low production cost is disclosed. The method of manufacturing a spacer nut arranged between a casing and a board arranged inside the casing and serving to fix the board in position while keeping the board spaced apart from the casing by a predetermined distance dimension is presented.
    Type: Grant
    Filed: December 25, 2009
    Date of Patent: September 11, 2012
    Assignee: Watoku Co., Ltd.
    Inventors: Yasuyuki Kadono, Yuji Kadono