Sealing construction

Abstract

Abstract THE SEALING CONSTRUCTION HEREIN IS SHOWN IN A PREFERRED EMBODIMENT IN A DISPOSABLE NURSER WHICH INCLUDES A PLASTIC SHELL, A SACK-LIKE CONTAINER PARTIALLY DISPOSED WITHIN THE SHELL AND HAVING ITS TOP DRAPED OVER THE TOP OF THE SHELL, AND A SCREW CAP-NIPPLE COMBINATION. A LOWER FLANGE ON THE NIPPLE AND THE SACK TOP COOPERATE TO ACT AS A GASKET MEANS. THE SHELL TOP TERMINATES IN AN INWARDLY EXTENDING FLANGE. A CIRCULAR PROJECTION IS FORMED ON THE SHELL FLANGE EXTENDING UP TOWARD THE COMBINATION GASKET. THE PROJECTION IS SPACED INWARDLY FROM THE JUNCTION OF THE INNER SIDE OF THE WALL OF THE SHELL TOP AND THE SHELL FLANGE TO PROVIDE A SPRING ACTION BY THE FLANGE WHICH WILL MAINTAIN A SEALING RELATIONSHIP BETWEEN THE CIRCULAR PROJECTION AND THE GASKET COMBINATION WHEN THE CAP IS SCREWED ON. THE SPRING ACTION OF THE SHELL FLANGE PERMITS THE FLANGE TO YIELD WHEN EXCESSIVE CAP TORQUE IS APPLIED TO PREVENT THE CIRCULAR PROJECTION FROM CUTTING, WEAKENING OR OTHERWISE DAMAGING THE INNER CONTAINER PORTION OF THE GASKET COMBINATION. A FILLET IS ADVANTAGEOUSLY FORMED BETWEEN THE SHELL TOP INNER WALL AND THE SHELL FLANGE TO REINFORCE THE JUNCTION AND CONTROL THE SPRING ACTION OF THE SHELL FLANGE.

Inventors

• 👤 Herbert B Mette

Bibliographic Details