ROTARY ELECTRIC SHAVER
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United States of America Patent
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Nov 7, 2011
filing date -
Nov 8, 2010
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Abstract
A rotary electric shaver includes an outer cutter which has an upper surface with annular shaving faces, in which many hair-entry apertures are formed, and an inner cutter having small blades, which rotate in sliding contact with the lower surface of the outer cutter from below the shaving faces. The outer cutter (10) has a plurality of concentric annular shaving faces (16, 18), which are integrally formed therewith. The density of the hair-entry apertures (65) is varied in the circumferential direction of the plurality of annular shaving faces (16, 18). The rotary electric shaver increases the shaving area of the outer cutter to improve shaving efficiency and also restrains excessively close shaving thereby to protect skin even when the contact pressure of an area near the center of the outer cutter against skin increases.
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