Container with plug type closure

Claim 1

THE COMBINATION WITH A CONTAINER TOP HAVING AN OPENING DEFINED BY A NARROW INTURNED FLANGE OF, A MOLDED PLUG OF RESILIENT PLASTIC MATERIAL PROVIDING AN AIRTIGHT CLOSURE FOR SAID OPENING AND COMPRISING A TOP PLATE LARGE THAN SAID OPENING AND SIZED TO COVER THE OPENING WHEN LYING AGAINST SAID TOP, MEANS HINGING SAID PLATE ON SAID TOP TO SWING ABOUT AN AXIS PARALLELING SAID TOP AND DISPOSED ADJACENT BUT SPACED OUTWARDLY FROM ONE SIDE OF THE OPENING, A PERIPHERAL WALL DEPENDING FROM SAID PLATE AND SIZED TO TELESCOPE WITHIN SAID FLANGE WITH A CLOSE PRESS FIT BY LATERAL FLEXING OF THE SKIRT AND COMPRESSION OF THE PLASTIC MATERIAL THEREOF, SAID WALL BEING DEEPER THAN SAID FLANGE AND HAVING A PERIPHERAL OUTWARDLY EXTENDING SHOULDER ADAPTED TO EXPAND BENEATH THE LOWER EDGE OF SAID FLANGE WHEN THE PLUG IS PRESSED INTO SAID OPENING WHEREBY TO HOLD THE PLUG IN SAID OPENING AND SAID PLATE AGAINST SAID TOP, AND AN OUTWARDLY PROJECTING BEAD NARROWER THAN SAID FLANGE FORMED INTEGRAL WITH AND EXTENDING AROUND THE ENTIRE PERIPHERY OF SAID WALL INTERMEDIATE THE TOP AND BOTTOM THEREOF SO AS TO BE COMPRESSED INTO SEALING ENGAGEMENT WITH A NARROW BAND-LIKE AREA OF SAID FLANGE WHEN THE PLUG IS PRESSED INTO SAID OPENING.