Dry shaver with primary and secondary modes of oscillation

Cutlery – Razors – With cooperating shearing blades

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Details

30 4392, B26B 1926, B26B 1902

Patent

active

041159209

ABSTRACT:
An electric dry shaver in the form of a generally rectangular parallelepiped and comprising a flexible part-cylindrical curved cutting foil extending along one end face and inclined towards the front face of said parallelepiped. A cutter body has cutter blades having curved cutting edges and extending in planes perpendicular to the foil cylinder axis. A spring acts on said cutter body to urge said cutting edges into engagement with said foil. A rotary electric drive motor has its axis of rotation extending between said opposite end faces. A cutter support member carries said cutter body and is mounted to a shaver body member by a pair of spaced parallel leaf springs, each said leaf spring lying when unflexed in a plane parallel to said opposite side faces. The electric motor has a rotary output member adapted to drive said cutter support member in generally longitudinal oscillation with flexing of said leaf springs. Said cutter support member is coupled to said cutter body by a coupling head working in a bore so as to drive said cutter body both in a primary mode of oscillation substantially linearly and axially of said foil to effect a shaving action and in a secondary mode of oscillation transverse to the foil cylinder axis and in a plane inclined towards said front face to cause said foil to oscillate in sympathy with said second mode of oscillation of said cutter body.

REFERENCES:
patent: 2260114 (1941-10-01), Hammond
patent: 2339677 (1944-01-01), Burns
patent: 2342467 (1944-02-01), Hagopian
patent: 2830364 (1958-04-01), Barnard
patent: 2920387 (1960-01-01), Marescalchi
patent: 3074161 (1963-01-01), Liska
patent: 3156045 (1964-11-01), Godefroy
patent: 3319333 (1967-05-01), Futterer
patent: 3962783 (1976-06-01), Retemma
patent: 4030573 (1977-06-01), Buzzi

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