LAMINATED ELECTRIC CONTACT Russian patent published in 2004 - IPC

FIELD: low-voltage switching devices. SUBSTANCE: laminated electric contact has silver-containing effective layer and copper or copper alloy auxiliary layer; open surface of auxiliary layer is embossed in the form of semi-spheres. Embossed semi-sphere diameter ranges between 0.5 and 1.0 mm. There are three such embossed semi-spheres. Introduction of embossed semi-spheres makes it possible to attain high current density at contacting points and complete fusion of semi-sphere material. EFFECT: enhanced reliability of contact welding to contact holder. 1 cl, 3 dwg, 2 ex