Abstract:
A container holding a pressurizing fluid comprises a resilient member to be positioned in the container wall and formed with a valve opening. A plug is positioned in the opening to normally close it, but the resilient member will flex to permit the release of fluid through the valve opening past the plug in response to a predetermined difference between the pressure inside and that outside the container. The container is enclosed within an outer jacket holding a fluid to be dispensed, which is maintained under a constant pressure equal to the pressure of said pressurizing fluid less the pressure required to flex said resilient member.
Abstract:
A dispenser for packaging two products which must be stored separately but mixed when dispensed, said dispenser comprising an outer container and an inner container within said outer container, said inner container being provided with closure means which opens in response to a difference between the pressure in said outer container and that in said inner container, and means for creating such a pressure difference.
Abstract:
A FLUID CONTAINING A POLYMERIZABLE FILM FORMING SUBSTANCE IS INTRODUCED INTO A CONTAINER SO AS TO ADHERE TO THE INNER WALLS THEREOF. THE NON-ADHERING PORTION OF THE LIQUID IS THEN WITHDRAWN AND THE REMAINDER POLYMERIZED IN SITU ON THE INNER SURFACE OF THE CONTAINER. ALTERNATIVELY, THE CONTAINER IS A MOLD COATED WITH A PARTING COMPOUND AND THE FILM FORMED THEREIN IS SEPARATED FROM SAID MOLD AFTER POLYMERIZATION.
Abstract:
CONTAINER HAS CONCAVE BOTTOM, AND CARTRIDGE OF PRESSURIZING GAS WITHIN IT NEAR THE BOTTOM. A RESILIENT SAFETY DEVICE IS SEATED IN THE BOTTOM AND DEFINES A CENTRAL HOLE. A PIN IS SLIDABLY POSITIONED IN SAID HOLE IN ALIGNMENT WITH THE CARTRIDGE SO AS TO REPTURE SAID CARTRIDGE WHEN DEPRESSED. THE SAFETY DEVICE BLUGES OUTWARDLY WHEN THERE IS EXCESSIVE PRESSURE INSIDE THE CONTAINER, THUS ENLARGING THE HOLE SO THAT GAS CAN ESCAPE AROUND THE PIN.
Abstract:
A safety device for a container under pressure comprises a resilient member to be positioned in the container wall and formed with a valve opening. A plug is positioned in the opening to normally close it, but the resilient member will flex to permit the release of fluid through the valve opening past the plug in response to excess pressure.