US Patent 8431819 Casing with channel discontinuity that resists capillary action

A casing (100, 200) for housing one or more electronic components for an electronic device in the casing interior, the casing comprising first (100) and second parts (200) having respective mateable surfaces having one or more mateable edges, the mating edges being arranged to define a channel (300) therebetween in the mated condition, the channel (300) extending from the exterior of the casing towards the interior of the casing, and wherein the channel (300) is arranged to comprise a discontinuity (303) arranged to resist capillary action.