Dispenser for amorphous material

Claim 2

A dispenser for substantially amorphous material stored in a flexible envelope, said dispenser comprising a substantially rigid housing accommodating a flexible envelope of material, said housing having air under pressure therein and having an open end coincident with the open end of the envelope of material and a housing cover of substantially flexible material enclosing the open end of the housing and having an opening formed through the housing cover and a valve for opening and closing the opening to permit the passage of material from the envelope; and

Claim 3

a dispenser unit removably affixed to the housing at the cover thereof and having a substantially tubular member extending at one end into the envelope of material via the opening in the cover of the housing and having valve means in the area of the other end of the tubular member and intermediate both ends, part of said tubular member comprising substantially flexible material, and said valve means comprising substantially arcuate spring means in the dispenser unit having one end in operative proximity with the other end of the tubular member, guide means in the dispenser unit for guiding movement of the spring means and a push-button movably mounted in the dispenser unit and affixed at one end to the other end of the spring means in operative proximity with the flexible material part of the tubular member and extending out of the dispenser unit at the other end of the push-button whereby spring action of the spring means maintains the one end of the spring means in blocking position closing the other end of the tubular member and depression of the push-button moves the spring means in the guide means in a manner whereby the one end of the spring means is moved to open position opening the other end of the tubular member.

Claim 4

a dispenser unit removably affixed to the housing at the cover thereof and having a substantially tubular member extending at one end into the envelope of material via the opening in the cover of the housing and having valve means in the area of the other end of the tubular member and intermediate both ends, part of said tubular member comprising substantially flexible material, and said valve means comprising substantially arcuate spring means in the dispenser unit having one end in operative proximity with the other end of the tubular member, guide means in the dispenser unit for guiding movement of the spring means and a push-button movably mounted in the dispenser unit and affixed at one end to the other end of the spring means in operative proximity with the flexible material part of the tubular member and extending out of the dispenser unit at the other end of the push-button whereby spring action of the spring means maintains the one end of the spring means in blocking position closing the other end of the tubular member and depression of the push-button moves the spring means in the guide means in a manner whereby the one end of the spring means is moved to open position opening the other end of the tubular member.

Claim 5

A dispenser as claimed in claim 1, wherein the valve means further comprises a substantially rigid pin mounted in the dispenser unit in substantially axial alignment with the push-button and in operative proximity with the flexible material part of the tubular member in substantially diametrically opposed relation with said push-button, a wall of substantially flexible material in the tubular member extending between the push-button and the pin and having a substantially axial hole formed therethrough, and a substantially flexible flap-like member in the tubular member next-adjacent the wall therein and covering the hole through the wall when the push-button is in raised position and buckling when the push-button is depressed and compresses said flap-like member between said push-button and the pin thereby uncovering the hole through said wall and permitting material to pass through said hole.