Patents Assigned to Sungkwang Best Co., Ltd.
  • Patent number: 7226519
    Abstract: Disclosed is a flexible hose for a vacuum cleaner and a fabricating method thereof. The fabrication method includes the steps of: extruding a primary extrusion molding band 13 having a larger size than a size of a finished state while embedding an electric wire 1 in the primary extrusion molding band 13 at a first extruder 12; molding a multi-extrusion molding band 10 in the size of the finished state at a sizing mold 14; and winding the multi-extrusion molding band 10 at a predetermined angle at a bonder and bonding a bonding portion 2 of the electric embedding portion 3 with a bonding end 4 of the semicircular portions 5 positioned on both sides of the multi-extrusion molding band 10 by using adhesive 8.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: June 5, 2007
    Assignee: Sungkwang Best Co., Ltd.
    Inventor: Il-Sook Park