Abstract: A cutter head for an electric shaver comprises an outer shearing foil provided with a series of hair entrance slots arranged in a row. Cooperating with the outer shearing foil is an inner cutter assembly which includes at least one inner blade having a cutting edge elongated in a general direction of the length of each slot and is driven to move in relation to the shearing foil so that the cutting edge is in hair shearing relation with the row of the slots. Formed with the inner blade is a hair scooping projection which projects in a general direction of the movement of the cutting edge and define a sloping edge extending downwardly and outwardly from the cutting edge such that a long hair strands entering the slots can, as the inner blade advances, be slid or guide along the sloping edge up to the cutting edge where the strand is successfully sheared against the edge of the slot.

Abstract: A reciprocating type electric shaver comprises an inner-blade mount holding many inner blades and connected to a first driver-element converting rotary motion of a motor into reciprocating motions and an outer blade connected to a second driver-element reciprocated at a mechanical phase reverse to the first driver-element so that the inner blades and outer blade can slidably engage with each other mutually at mechanically reverse phase and the relative momentum of the outer blade with respect to the inner blades can be enlarged.

Abstract: Shaving blade assembly for rotary type electric shaver, improved specifically in raising and shearing abilities for such irregular beard hair as curly, bent or lying hair.

Abstract: A hair clipper comprising a fixed blade and a movable blade which performs a sliding movement in a pressed contact with said fixed blade, wherein each cutting tooth of said movable blade moves to cross accurately its corresponding cutting notch of the fixed blade, so that the hair caught between said notches of the fixed blade can be cut perfectly.