Patent ID: 7941912

Claim:
A device to produce a metallic clamp body ( 1 ) for electro-technical screw terminal with a first aperture ( 2 ) to receive a clamp screw with a second aperture ( 3 ) configured to receive a electrical conductor said second aperture ( 3 ) including a cavity ( 4 ) formed by a plurality of inner surfaces ( 5 , 6 , 7 , 8 ), wherein said cavity ( 4 ) is configured to receive said electrical conductor in contact with one or more of said plurality of inner surfaces ( 5 , 6 , 7 ), whereby one or more inner surfaces ( 5 , 6 , 7 ) of the cavity ( 4 ) of the second aperture ( 3 ) are textured, characterized in that an embossing tool ( 16 ) is used for the texturing ( 9 ), and wherein the embossing tool ( 16 ) possesses a texture ( 17 ) that creates a micro-texture ( 26 ) in at least one of the sidewall surfaces ( 7 , 7 ′) of the clamp body ( 1 ).