LOWER KNIFE FOR ELECTRIC RAZOR HEAD Russian patent published in 2011 - IPC B26B19/04 

FIELD: personal use articles.

SUBSTANCE: lower knife for a shaving head of an electric razor is equipped with an upper knife, at least with one blade, which has a cutting edge facing towards a single direction of motion. The cutting edge has at least two sections with various cutting angles that follow each other. Besides, the invention also relates to a knife head with such a lower knife, and also to an electric razor equipped with such a shaving head. By reduction of cutting angle size or accordingly the size of varying cutting angle, it is possible to obtain optimal compromise between two such different requirements as cutting quality and cutting edge stability.

EFFECT: section of a cutting edge with a blunter or less sharp angle of cutting provides for required stability of cutting and ensures durable service life of the blade, and the section of the cutting edge with a sharper cutting angle, on the contrary, reduces the cutting force, which creates improved sliding on skin.

25 cl, 5 dwg