Patent ID: 6305582
Filing Date: 2001-10-23
Classification: B65D

Abstract:
A valve for an inhalator including a container for storing a pressurized fluid, comprising:a valve case secured to the container;a valve pin moveably mounted to said valve case, and said valve pin including an end portion that is exposed to the pressurized fluid within the container, said end portion of said valve pin cooperating with said valve case to define a space therebetween;a first seal and a second seal that are arranged in a spaced relation in an axial direction of said valve pin, said first seal being mounted onto said end portion of said valve pin; anda fluid passage formed in said valve pin, said fluid passage having an outlet communicating with an outside of the container and an inlet that communicates with said space and is arranged between said first and second seals in a spaced relation thereto;said valve pin taking a first position where said first seal cooperates with said valve case to block fluid communication between inside and outside of the container through said space and said fluid of the container through said space and said fluid passage and a second position where said first seal cooperate with said valve case to establish fluid communication between inside and outside of the container through said space and said fluid passage;wherein said valve pin includes a shaft portion and a piston portion, said piston portion having a greater diameter than said shaft portion, said piston portion being disposed on said end portion of said valve pin,wherein said valve case includes a wall defining a generally cylindrical bore in which said piston portion of said valve pin is received, andwherein said wall of said valve case defines a pressure introducing passage through which pressure within the container is introduced into said generally cylindrical bore.