Powder/liquid dispenser

Abstract

A powder/liquid dispenser employing a hollow plastic cylindrical body with a first vertical cylindrical section sealed at its upper end and integral at its lower end. A second vertical cylindrical section open at both ends is disposed below the first section on connected thereto. The second section has an interior thread. A thin horizontal penetrable circular membrane is secured to the second section in the region common to both first and second sections. A flat cylindrical ring shaped member has an open central area and an upper circular vertically upward extending cutting edge spaced inwardly from the periphery of the member. The member is positioned in the common region below the membrane with the edge disposed against the membrane

1 . A powder/liquid dispenser comprising: 
 a hollow plastic cylindrical body having a first vertical cylindrical section sealed at its upper end and integral at its lower end with a second vertical cylindrical section which is open at both ends and is disposed below the first section, the second section having an interior thread;    a thin horizontal penetrable circular membrane is secured to the second section in the region common to both first and second sections; and    a flat cylindrical ring shaped member has an open central area and an upper circular vertically upward extending cutting edge spaced inwardly from the periphery of the member, said edge having an opening extending inwardly into the circular area, said member being positioned in the common region below the membrane with the edge disposed against the membrane.    
   
   
       2 . The dispenser of  claim 1  further including a slot extending through the member from the periphery and the opening in the edge into the circular area.  
   
   
       3 . The dispenser of  claim 1  wherein the first section contains powder or liquid.  
   
   
       4 . The dispenser of  claim 1  where the membrane is a foil.  
   
   
       5 . The dispenser of  claim 4  wherein the foil is an aluminum foil.  
   
   
       6 . The dispenser of  claim 1  wherein the internal thread is adapted to engage an external thread of the open neck of a vessel.  
   
   
       7 . The dispenser of  claim 5  wherein the vessel is a bottle containing a fluid.  
   
   
       8 . The dispenser of  claim 6  wherein the fluid is water.  
   
   
       9 . The dispenser of  claim 2  where the membrane is a foil.