Light-tight packaging container

Abstract

A packaging container for photosensitive film has a detent locking and unlocking feature that provides light-tight closure of the container compartment to protect the product from the penetration of light. A protuberance formed in the container compartment interlocks with a notch formed in the closure for preventing axial movement of the closure. The interlocked protuberance and notch form the light-tight packaging container.

What is claimed is:  
     
         1 . A light-tight packaging container, comprising: 
 a generally cylindrical container compartment having a base, sidewalls surrounding said base, and a central opening opposite said base, said sidewalls having a flange extending at least partially therearound, and wherein said flange includes a first detent feature extending axially therefrom; and,    a generally cylindrical closure configured for fitting over at least a portion of said sidewalls thereby closing said opening, said closure having a second detent feature formed in a peripheral end edge for interlocking with said first detent feature in said flange thereby securing said closure from axial movement along said flange.    
     
     
         2 . The packaging container recited in    claim 1    wherein said first detent feature is a protuberance having a generally arcuate shape; and, said second detent feature is a notch.  
     
     
         3 . The packaging container recited in    claim 2    wherein said notch has a generally arcuate shape having a first land on one side and a second land on an opposite side for guiding said protuberance between an interlocking position and a free position relative to said notch.  
     
     
         4 . The packaging container recited in    claim 1    wherein said closure and said generally cylindrical container compartment are formed of a high density polyethylene material.