Pour Cup with Filter Lock

Abstract

An improved filtration system is provided. The filtration system comprises a pour cup comprising a reservoir and a filter engagement region wherein the filter engagement region comprises a pour cup taper, tab slots and a bottom. The filtration system also comprises a filter wherein the filter comprises a filter taper and filter tabs wherein the filter tabs can be received by the tab slots in one rotational orientation of the filter relative to the pour cup and the tab slots engage with the bottom in a second rotational orientation of the filter relative to the pour cup.

Claimed is: 
     
         1 . A filtration system comprising:
 a pour cup comprising a reservoir and a filter engagement region wherein said filter engagement region comprises a pour cup taper, tab slots and a bottom; and   a filter wherein said filter comprises a filter taper and filter tabs wherein said filter tabs can be received by said tab slots in one rotational orientation of said filter relative to said pour cup and said tab slots engage with said bottom in a second rotational orientation of said filter relative to said pour cup.   
     
     
         2 . The filtration system of  claim 1  wherein at least one of said pour cup taper or said filter taper have an angle of 30°+10°. 
     
     
         3 . The filtration system of  claim 1  wherein said reservoir is tapered inward from top to bottom. 
     
     
         4 . The filtration system of  claim 1  wherein said filter comprises at least two tabs to no more than six tabs. 
     
     
         5 . The filtration system of  claim 1  wherein said filter further comprises a rotation assist feature. 
     
     
         6 . The filtration system of  claim 5  wherein said rotation assist feature is selected from a protrusion and a depression. 
     
     
         7 . The filtration system of  claim 1  wherein said filter is a matrix filter. 
     
     
         8 . A method for assembly a filter assembly comprising:
 positioning a pour cup comprising a reservoir and a filter engagement region wherein said filter engagement region comprises a pour cup taper, tab slots and a bottom; and   orienting a filter relative to said pour cup wherein said filter comprises a filter taper and filter tabs with said filter tabs aligned with said tab slots;   inserting said filter through said reservoir to a position wherein said filter tabs are received by said tab slots; and   rotating said filter relative to said pour cup wherein said tab slots are not aligned with said tab slots and said filter tabs are engaged with said bottom.   
     
     
         9 . The method for assembly a filter assembly of  claim 8  wherein at least one of said pour cup taper or said filter taper have an angle of 30°+10°. 
     
     
         10 . The method for assembly a filter assembly of  claim 8  wherein said reservoir is tapered inward from top to bottom. 
     
     
         11 . The method for assembly a filter assembly of  claim 8  wherein said filter comprises at least two tabs to no more than six tabs. 
     
     
         12 . The method for assembly a filter assembly of  claim 8  wherein said filter further comprises a rotation assist feature. 
     
     
         13 . The method for assembly a filter assembly of  claim 12  wherein said rotation assist feature is selected from a protrusion and a depression. 
     
     
         14 . The method for assembly a filter assembly of  claim 8  wherein said filter is a matrix filter.