Electric shaver cutting assembly, has knife and grid in contact with skin of user, where knife and grid are made of metal core coated, totally or partly, with thin layer made of specific material

摘要

The assembly has a knife (C) and a grid (G) in contact with the skin of a user, where the knife and the grid are made of a metal core (1). The metal core is coated, totally or partly, with a thin layer (2) made of a material. The thickness of the layer is comprised between 0.05 and 3 micrometers. The hardness of the layer is comprised between 15 and 50 Giga Pascal. The surface energy of the layer is comprised between 18 and 50 mill Newton/m.