Patent ID: 6571827
Filing Date: 2003-06-03
Classification: A01J,F16K,Y10T

Abstract:
A device for a container comprising:a casing defining an inner space and an outlet space which extends from the inner space and is arranged to be connected to a vacuum source in such a manner that the pressure in the inner space and the outlet space in a state of use is less than the pressure of a surrounding space outside the casing; a valve arrangement including a first valve seat which forms a first passage between the inner space and the outlet space, a first valve element which is abuttable against the first valve seat for closing the first passage in a first position of the valve arrangement and which is displaceable from the first valve seat to a second position of the valve arrangement for opening the first passage, a spindle portion which is connected to the first valve element and extends through the first valve seat, the outlet space and a second passage through the casing, means which arranged to form a flow passage which, in the first position of the valve arrangement, permits a flow from the surrounding space to the inner space, a second valve seat which surrounds the second passage, and a second valve element which is arranged to abut the second valve seat in said first position in order to close the second passage between the outlet space and which is displaced from the second valve seat in said second position.