Method and means for sealing a carrying case

The method of producing a sealed carrying case comprising the steps of

• providing two sections each of which has an outer edge,
• connecting said sections by a hinge such that said sections can meet at said outer edges thereof,
• providing said sections with walls such that said sections define a closed container when said sections so meet at said outer edges thereof,
• providing in one of said outer edges a recess having sidewall means defining a space therebetween, inserting a gasket into the inner portion of said recess,
• providing a continuous flange on the other of said outer edges such that said flange enters said recess and engages said gasket when said sections so meet at said outer edges thereof,
• said flange being made narrower than said space,
• and providing spaced rib means projecting laterally outwardly from said flange such that said rib means enter said recess along with said flange,
• said rib means being made to a dimension such that said rib means are in juxtaposition with said sidewall means when said rib means so enter said recess for reinforcing the joint between said sections.