Patent ID: 6817842
Filing Date: 2004-11-16
Classification: A61C,F04C,Y10T

Abstract:
A device for regulating an aspirator, comprising, an aspiration conduit which conduit connects the aspirator to a closed environment, through which conduit air is extracted from the closed environment;wherein the device also comprises a first valve arranged between the conduit and an outside environment; wherein the first valve is normally closed when a temperature of the outside environment is below a predetermined temperature and open when a temperature of the outside environment is above a predetermined temperature, placing the conduit in communication with the outside environment; a second valve of known type which is located between the conduit and the outside environment, an opening and closing of which second valve is controlled by a predetermined pressure differential between the closed environment and the outside environment, wherein the first valve and the second valve have an obturator in common, wherein an opening and closing movement of which are controlled independently both by a reaching of the predetermined pressure differential between the closed environment and the outside environment and by a reaching of the predetermined temperature of the outside environment, and wherein the first valve and the second valve are made in a sleeve, a first end of which is connected to the conduit and a second end of which is connected to the outside environment, and in which sleeve a seating is made for the first valve and the second valve, and which sleeve houses the obturator; an opening of the obturator being opposed by an elastic element; a chamber being afforded internally of the obturator, which chamber is filled with a material having a high coefficient of heat dilation and from an end of which chamber an end of a rod projects, which rod is slidable in an axial direction, and another end of which rod is inserted in the chamber; there being also a striker element, fixed with respect to the sleeve, which striker element is conformed and arranged in such a way as to oppose an external-wise sliding of the rod.