Patent ID: 7511963

Claim:
A metal housing ( 2 ), comprising: a side wall ( 8 ), having a side wall surface extending substantially along a plane and facing an outside of the housing, and having a ledge ( 20 ), the ledge having a top surface, a bottom surface, and a side surface, the side surface facing the outside of the housing, wherein the ledge has a bore ( 16 ), extending through the ledge ( 20 ) from top surface to the bottom surface, and configured to receive a fixing screw ( 6 ), wherein the side wall ( 8 ) has, at the bore ( 16 ), a recessed area ( 10 ) having a concavity oriented toward the outside of the housing and surrounded by the side wall ( 8 ), wherein said recessed area has a surface ( 14 ) inclined relative to the plane of the side wall ( 8 ), the inclined surface ( 14 ) configured such that metal chips resulting from the, fixing screw being screwed into the bore ( 16 ) are discharged, by gravity, toward an outside of the housing away from the plane of the side wall, and wherein the bottom surface of the ledge ( 20 ) forms a top portion of the recessed area ( 10 ) and is connected to the inclined surface ( 14 ).