Patent ID: 6367644
Filing Date: 2002-04-09
Classification: F01P,Y10S

Abstract:
A sealing cap for container openings, comprising:an inner cap element which provides at least one flow connection between the inside and the outside of the container; and a valve arrangement for releasing and blocking the flow connection, said valve arrangement having a first valve body and a second valve body moved back and forth between at least one release position and at least one blocking position, said first valve body being prestressed in the direction toward the inside of the container and being supported in this direction at a first seal seat on said inner cap element, and at a second seal seat, located radially within said first seal seat on said second valve body, wherein said first valve body is lifted off said inner cap element when a first threshold value of the pressure in the interior container is exceeded, and is lifted off said inner cap element and said second valve body, when a second, safety threshold value of the pressure in the interior container is exceeded, each respectively by releasing a flow connection between the inside of the container and the outside of the container, and wherein said second valve body is embodied as a component extending transversely with respect to the movement direction of the valve bodies, said second valve body having an opening located radially inside said second seal seat of said first valve body which is in flow connection with the inside of the container and to which a third seal seat is provided, which is provided radially outside of said second seal seat of said first valve body in the direction toward the outside of the container on said inner cap element against which it comes to rest under the influence of a third threshold value, situated between said first and second threshold values of the inner container pressure, in the course of which it blocks a previously exiting flow connection between the inside of the container and the outside of the container.