Pressed V-groove pancake slip ring

摘要

The present invention advantageously provides a cost effective flat rotor (100) for a pancake type slip ring. A flat copper coil sheet (20) is stamped into a corrugated shape having concentric V-ring grooves (132,143,136). The corrugated stamped copper foil sheet is bonded using a bonding agent (124) to a dielectric layer (122). Multiple concentric V-grooves are formed by separating the grooves, for example, by machining the grooves at an apex thereof in order to form separate electrical circuits. A corresponding plurality of holes (143,144,146) extend through each concentric ring and through the dielectric layer from the first side through the second side. A conductive material is placed in each of the plurality of holes to electrically connect each concentric ring to the second side.