Reciprocatory dry shaver

Details Reciprocatory dry shaver Reciprocatory dry shaver

1993-11-22

1995-12-12

Rada, Rinaldi I.

Cutlery

Razors

With cooperating shearing blades

30 437, B26B 1912

Patent

active

054738180

ABSTRACT:
A dry shaver includes a perforated outer shearing foil and an inner cutter. The outer shearing foil has a first axis along which it is arcuately curved. The inner cutter has a longitudinal axis along which it is arcuately curved to have an arcuate contour in conformity with the outer shearing foil and is driven to reciprocate in hair shearing engagement with the outer shearing foil. The inner cutter comprises a plurality of inner blades which are spaced along the longitudinal axis in parallel relation to each other, each of the blades having opposed first and second faces each defining a cutting edge at its upper end so that the individual cutting edges are cooperative to define the arcuate contour. Each inner blade, which is offset from a longitudinal center of the inner cutter, is formed with a first face directing outwardly in the offset direction with an undercut immediately adjacent to the cutting edge. The undercut cooperates with the adjacent cutting edge to give an first rake angle .beta. with respect to the vertical plane as well as to give a true rake angle .delta. with respect to a plane normal to the curvature of the arcuate contour of the inner cutter at the contact between the adjacent cutting edge and the outer shearing foil.

REFERENCES:
patent: 5214833 (1993-06-01), Yada

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