METHOD OF MANUFACTURING OUTER CUTTER OF ROTARY ELECTRIC SHAVER
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United States of America Patent
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Issued Date -
Jun 12, 2014
app pub date -
Nov 15, 2013
filing date -
Dec 6, 2012
priority date (Note) -
Abandoned
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Abstract
A method of manufacturing an outer cutter of a rotary electric shaver that includes the outer cutter and an inner cutter which is slidingly in contact with a bottom surface of the outer cutter and rotates, in which a plurality of the circular shaving surfaces are integrally formed in the outer cutter in a concentric manner, and round hole-shaped hair introduction openings are formed in at least one of the circular shaving surfaces includes (a) a step of grinding or polishing a predetermined position where the round hole-shaped hair introduction openings are formed in the circular shaving surface to obtain a thickness size smaller than an inner diameter size of the round hole; and (b) a step of forming the round hole-shaped hair introduction openings in the position where the grinding or the polishing is performed by pressing, after the step (a).
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