| 摘要 |
A dry shaver ( 11 ) has a single cutter blade ( 15 ) and a single cooperating shear blade ( 17 ). The shear blade ( 17 ) is an elongate flexible foil, the thickness of which is different at different regions ( 21, 22 ) along the elongate extent of the foil ( 17 ). The foil ( 17 ) is mounted ( 27 ) for displacement in its elongate direction so that a foil region ( 21, 22 ) of a particular thickness may be selectively aligned with the cutter blade ( 15 ). The spacing between a skin engaging surface of the shear blade ( 17 ) and the opposite face of the shear blade ( 17 ) which cooperates with the cutter blade ( 15 ) is thus selectively variable. In a further embodiment, the dry shaver is of the rotary type and has a plurality of interchangeable shear blades of different thicknesses. In a still further embodiment, a rotary dry shaver has a mechanism for varying the spacing between the outer surface of a cover member overlying a shear blade and a cooperating rotary cutter blade.
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