Patent ID: 6095496
Filing Date: 2000-08-01
Classification: A61M,F16K

Abstract:
A valve for regulating a gas flow comprising:a valve housing having an inlet for a gas to be regulated and an outlet for a regulated gas flow;a valve seat with a valve opening disposed in said valve housing between said inlet and said outlet;a movable sealing element disposed in front of and spaced from said valve seat and said valve opening, said sealing element having a first side facing said valve seat and said valve opening, and a second side opposite said first side;a movable sealing actuator disposed at said second side of said sealing element and operable to move said sealing element in a first direction through a distance for decreasing a flow of said gas through said valve opening and in a second direction, opposite said first direction, for increasing a flow of said gas through said valve opening; anda preformed part mounted in said housing between said sealing actuator and said sealing element, said preformed part having at least a portion thereof disposed at a non-zero angle relative to said valve seat and said portion having a surface area which is substantially equal to a surface area of said valve seat, said sealing actuator having a terminal side interacting with said preformed part to press said preformed part against said second side of said sealing element during movement of said sealing element through said distance in said first direction to gradually cause said first side of said sealing element to make contact with said valve seat and, when said sealing element is moved through said distance in said second direction, causing said first side of said sealing element to gradually detach from said valve seat.