Use-evidencing smoke filter container system

Abstract

A use-evident container for containing an object and selectively preventing elements outside said container to reach the object comprises two housing portions and two caps. The two housing portions define a chamber for surrounding an object. The housing portions each define at least one opening forming a first part of a fluid flow path between the chamber and outside of the housing. The caps close the at least one opening and have at least one cap hole forming a second part of the fluid flow path when the at least one opening and the at least one cap hole at least partially overlap one another. At least one cap connector rotatably connects the housing portions and the cap and enables the fluid flow path to be opened and closed by relative rotation of the housing portion and the cap. At least one single-use lock engages the housing portion and the cap and prevents the relative rotation. The lock holds the housing and the cap in a first relative position in which the fluid flow path is closed. The fluid flow path is openable only by the relative rotation to a second relative position and the relative rotation being possible only upon an unlocking of the single-use lock. The single-use lock thereafter permanently evidences the unlocking.