Patent ID: 7540090
Filing Date: 2009-06-02
Classification: B26B

Abstract:
1. A rotary type electric shaver comprising an outer cutter frame that is provided on a shaver main body, an outer cutter that is installed in said outer cutter frame and has hair introduction openings in its ring-shaped thin layer portion whose upper surface forms a shaving surface, and an inner cutter that has cutter bodies which make sliding contact with a lower surface of said thin layer portion and rotate to cut hair that entered said hair introduction openings, wherein said hair introduction openings have a shape of slit extending in said thin layer portion in substantially a radial direction thereof; upper portions of two opposing side wall surfaces extending in a lengthwise direction of said hair introduction openings form parallel planes in cross section taken substantially orthogonal to the lengthwise direction of said hair introduction openings; and wherein cutting edges, which are respectively at lower ends of two opposing side wall surfaces of each of said hair introduction openings on both forefront and rearward sides with respect to a direction of rotation of said inner cutter, are formed at an acute angle in cross section taken substantially orthogonal to said lengthwise direction of said hair introduction openings and project towards each other.