Patent ID: 7739798

Claim:
A dry shaver comprising: a shaving head which is elongated to have a lengthwise axis and a width axis, said shaving head being configured to carry a semi-cylindrical first outer cutter, a semi-cylindrical finishing cutter, a slit cutter, and a semi-cylindrical second outer cutter which are all elongated along said lengthwise axis and are arranged in generally parallel relation with each other, each of said first and second outer cutters comprising a main foil with a number of perforations and an inner cutter driven by a motor to move in sliding contact with said foil, said main foil being curved about an axis parallel with said lengthwise axis into an arcuate contour; said slit cutter comprising an elongated outer blade with a number of slits opened at lateral edges of said outer blade, and an inner cutter driven to move in sliding contact with said outer blade, said finishing cutter comprising a finishing foil with a number of perforations and an inner cutter driven by said motor to move in sliding contact with said finishing foil, said finishing foil being curved about an axis parallel with said lengthwise axis into an arcuate contour having a width perpendicular to said lengthwise axis, wherein said first and second outer cutters are disposed on opposite width ends of said shaving head with said finishing cutter and said slit cutter being disposed between said first and second outer cutters, and wherein said finishing foil is shaped to have the width less than that of said main foil and to have a thin section of reduced thickness at least around a portion of each perforation relative to said main foil.