Mouthpiece for metallic air valve in self inflating air mattress, has hollow part, into which valve head is inserted, tapering to one end connected to air duct

摘要

A mouthpiece (1) has a hollow part (7), into which a valve head (5) is inserted, tapering to one end (9) serving as an air duct. The hollow part has a rounded recess (8) formed of flexible ductile wall and with a diameter larger than the outside diameter of the valve head.