Patent ID: 7563992

Claim:
An enclosure for electronic circuitry comprising: a first housing member comprising at least one protrusion formed in a wall, wherein said at least one protrusion is located at or near a perimeter of said first housing member; a second housing member comprising at least one slot for receiving said at least one protrusion such that there is an interference fit between said at least one slot and said at least one protrusion that secures said second housing member to said first housing member, wherein said at least one slot for receiving said at least one protrusion is located at or near a perimeter of said second housing member; a trough near the perimeter of said first housing member, said trough being continuous, with said at least one protrusion located within said trough, and said interference fit providing one or more continuous electrical ground contact surfaces between said at least one slot and said at least one protrusion.