Patent ID: 8857649

Claim:
A lid for a closeable mixing container for a paint gun, the lid comprising: an inner side configured to face an interior of the mixing container; a ventilation opening; and a labyrinth seal comprising a free end spaced apart from the inner side and configured to extend into the interior of the mixing container, and three cylinders arranged into each other including an innermost cylinder having a proximal end mechanically connected to the inner side and surrounding the ventilation opening, an intermediate cylinder having a proximal end spaced apart from the inner side, and an outermost cylinder having a proximal end mechanically connected to the inner side and surrounding the proximal end of the intermediate cylinder, wherein a distal end of the intermediate cylinder at the free end of the labyrinth seal is provided with a lid part closing the interior of the innermost cylinder, but spaced apart from a distal end of the innermost cylinder so that a gap allowing air to flow is defined between the distal end of the innermost cylinder and the lid part, and wherein an air path is defined via the labyrinth seal between the ventilation opening communicating with an exterior of the mixing container and a second opening communicating with the interior of the mixing container at or adjacent to a distal end of the outermost cylinder at the free end of the labyrinth seal, and wherein the air path is further defined between the walls of the cylinders so as to allow air to flow but prevent paint to penetrate outside of the mixing container via the air path.