Clusure device

Claim 1

A CLOSURE DEVICE FOR CLOSING AN OPENING IN A PRESSURIZED CONTAINER, SAID DEVICE HAVING A HOUSING FOR COVERING THE OPENING IN SUCH CONTAINER AND VALVING ASSEMBLY FOR CREATING A SEAL BETWEEN THE CLOSURE DEVICE AND SUCH CONTAINER, SAID HOUSING HAVING AN OPENING PROVIDED IN THE CENTRAL PORTION AND A PLURALITY OF OPENINGS DISPOSED IN SPACED RELATIONSHIP RELATIVE TO EACH OTHER ADJACENT THE PERIPHERAL PORTION THEREOF, STRUCTURE FOR REMOVABLY SECURING THE CLOSURE DEVICE TO SUCH CONTAINER INCLUDING AN ELONGATE ELEMENT DISPOSED ADJACENT THE HOUSING AND EXTENDING GENERALLY THEREACROSS, SAID ELEMENT HAVING A DEPENDING PART DISPOSED ADJACENT EACH END PORTION THEREOF IN ALIGNMENT WITH THE PERIPHERAL OPENINGS IN THE HOUSING, LINKING STRUCTURE PROVIDED WITH A RECESS EXTENDING THERETHROUGH, SAID LINKING STRUCTURE BEING DISPOSED IN THE CENTRAL OPENING OF THE HOUSING AND EXTENDING THERETHROUGH TO PIVOTALLY INTERCONNECT AN INTERMEDIATE PORTION OF THE ELEMENT TO THE VALVING ASSEMBLY TO ENABLE THE ELEMENT TO BE MOVABLE BETWEEN A FIRST POSITION THEREIN ONE OF SAID DEPENDING PARTS PASSES THROUGH THE RESPECTIVE PERIPHERAL OPENING IN THE HOUSING AND ENGAGES SUCH CONTAINER TO EFFECTIVELY SECURE THE CLOSURE DEVICE THEREON AND A SECOND POSITION WHEREIN SAID ONE DEPENDING PART OF THE ELEMENT IS DISENGAGED FROM SUCH CONTAINER WITH THE DEPENDING PARTS EACH BEING WITHIN THE RESPECTIVE PERIPHERAL OPENINGS IN THE HOUSING SAID IN ENGAGEMENT THEREWITH TO FACILITATE IN REMOVING THE CLOSURE DEVICE FROM THE CONTAINER, SAID INTERMEDIATE PORTION OF THE ELEMENT HAVING A CAM SURFACE EFFECTIVE TO ACTUATE SAID LINKING STRUCTUREAND BREAK THE SEAL BETWEEN THE VALVING ASSEMBLY AND SUCH CONTAINER IN INITIAL MOVEMENT OF THE ELEMENT FROM THE FIRST POSITION TOWARD THE SECOND POSITION TO RELIEVE PRESSURE FROM WITHIN SUCH CONTAINER, AND APPARATUS RESPONSIVE TO THE RELIEF OF SUCH PRESSURE ON INITIAL MOVEMENT OF THE ELEMENT FROM THE FIRST POSITION TO RESTRAIN SAID ELEMENT IN A POSITION INTERMEDIATE THE FIRST AND THE SECOND POSITIONS WITH THE ONE DEPENDING PART THEREOF BEING IN ENGAGEMENT WITH SUCH CONTAINER AND PREVENTING THE REMOVAL OF THE CLOSURE DEVICE THEREFROM UNTIL SUCH PRESSURE HAS BEEN RELIEVED FROM SUCH CONTAINER, SAID APPARATUS INCLUDING AN ELONGATE MEMBER MOVABLY DISPOSED WITHIN THE RECESS OF THE LINKING STRUCTURE AND EXTENDING THERETHROUGH, SAID MEMBER BEING RESPONSIVE TO THE RELIEF OF SUCH PRESSURE ON INITIAL MOVEMENT OF THE ELEMENT FROM THE FIRST POSITION TO ENGAGE THE INTERMEDIATE PORTION OF THE ELEMENT AND PREVENT FURTHER MOVEMENT THEREOF TOWARD THE SECOND POSITION UNTIL AFTER SUCH PRESSURE HAS BEEN RELIEVED AND ON RELIEF OF SUCH PRESSURE TO BE DISENGAGED FROM THE INTERMEDIATE PORTION OF THE ELEMENT AND ENABLE THE ELEMENT TO BE MOVED TOWARD THE SECOND POSITION WHEREAT THE CLOSURE DEVICE MAY THEN BE REMOVED FROM SUCH CONTAINER AFTER SUCH PRESSURE HAS BEEN RELIEVED THEREFROM.