Container closure with auxiliary compartment

Abstract

A screw-on type closure ( 12 ) for a container ( 10 ) comprised of an auxiliary compartment ( 14 ), accessible only when the closure is in the fully open configuration, and separated from the container by a sealing element ( 16 ), such that a second material may be housed in said compartment separate and secure from a first material housed within the container, in a configuration that does not affect the overall dimensional envelope of the closure and container assembly, nor the maximum volumetric capacity of the container itself.

1 . A container closure device comprising: 
 (a) an internal spiral thread form sufficient to facilitate positive engagement of the closure with a similar external spiral thread form of a container,    (b) an auxiliary compartment that is accessible only when the closure is in the open configuration, and residing within the closure above the plane defined by the upper endpoint of the closure's internal spiral thread form,    (c) a means of creating a seal between the auxiliary compartment of the closure and the container,    (d) a means of manually disengaging the seal from the closure