Patent ID: 8806763

Claim:
An electric shaver comprising: a hand grip configured to be gripped by a user's hand, a blade head provided on an upper end of said hand grip, said blade head carrying at least one shaving unit comprising an outer blade foil and an inner blade driven in a shearing engagement manner with said outer blade foil, said outer blade foil having a plurality of holes in which hairs are introduced, said outer blade foil being elongated and having a length and being curved along a width direction to form a generally C-shaped cross section, said outer blade foil being curved convexly and uniformly along said outer blade foil's length to have a longitudinal curved outline, wherein a radius of curvature of said longitudinal curved outline is no less than 150 mm and no more than 350 mm and said outer blade foil has a transverse arc having a uniform radius of curvature straddling an apex of the outer blade foil, the radius of curvature is set to a range of 1.5 mm to 3.5 mm, wherein each of said holes of said outer blade foil has a shape having a major axis extending generally along the length of said outer blade foil, said holes being arranged in such a pattern as the major axes get longer gradually as said holes near a longitudinal end of said outer blade foil from a middle part of said outer blade foil.