Patent ID: 6951056

Claim:
An inner cutter for a dry shaver comprising: a plurality of blades which are supported on a base and driven to move relative to an outer cutter in hair shearing engagement with the outer cutter for cutting hairs; said blades being arranged in parallel relation with each other and shaped to have a pair of cutting edges on opposite sides on top of each blade, said cutting edge being defined by a top face of said blade and a rake face which is formed on an underside of said blade and which is inclined with respect to said top face at an angle of α (°) said cutting edge being rounded at its tip to have a curvature radius R (μm) which satisfies a relation that R≦−0.067·α+4.7, wherein each of said blades includes a rib which projects on the underside of the blade such that said cutting edges project sideward from an upper end of said rib by an amount of at least 0.05 mm.