Patent ID: 6170513
Filing Date: 2001-01-09
Classification: F16K,Y10T

Abstract:
An inflation nozzle structure of an inflatable envelope, the inflatable envelope being formed by two envelope membranes the peripheries of which are adhered to each other, at least two inner membranes being adhered to an edge of the envelope membranes and inward extending from the edge, the two inner membranes being attached to each other to define an air passage communicating external side with internal side between the inner membranes, said inflation nozzle structure being characterized in that at least one isolating membrane is sandwiched between the inner membranes near an outer opening of the air passage, two faces of the isolating membrane being formed by two kinds of membranes with different melting points, whereby when thermally pressed and sealed, one face with lower melting point of the isolating membrane is thermally adhered in inner wall of one of the inner membranes, while the other face with higher melting point is not adhered to the inner wall of the other inner membrane so as to define the air passage.