Pressure actuated valve

Claim 1

A package of the class including a container, a fluid composition in the container, propellant means also in the container for discharging the composition from the container, and a dispensing assembly mounted on the container and comprising a body, an outlet passageway formed in the assembly and communicating with the interior of the container and having a recess opening into the container, a plate-like valve member including a section in fixed mating engagement with the interior wall of said recess and formed with an element constructed and arranged to be acted upon by material under pressure in the container normally to close said passageway to prevent the flow of material from the container, said section and said element being integrally connected by flexible means whereby free floating relative movement therebetween may be effected, said plate-like valve element having an upstanding annular rib-like portion, a through bore having one end opening in said rib-like portion and having the other end opening into the interior of the container, said body having an annular recessed valve seat against which said rib-like portion bears when in normal passageway closing position, a valve stem movable in response to a force applied manually for acting eccentrically against the plate-like valve element to tip same to its open position to effect fluid flow communication between the passageway and said through bore leading into the interior of the container, the net force acting on the valve element to seat same on said valve seat and to return said valve stem to its released position being derived solely from the pressure within the container.