Cutlery – Blades – Razor blade
Patent
1993-11-01
1995-01-03
Watts, Douglas D.
Cutlery
Blades
Razor blade
30 433, B26B 1926
Patent
active
053774140
ABSTRACT:
In a shaving apparatus (1) comprising a foil-like lower cutter in the form of a cutter blade (68) and an upper cutter in the form of a shear foil (63) the cutter blade (68) has hexagonal hair-entry apertures (145) arranged in a honeycomb pattern, and the shear foil (63) has square hair-entry apertures (119) and a slot-shaped hair-entry aperture (120) between every two adjacent square hair-entry apertures (119), the direction of two parallel cutting edges (132, 134) of the square hair-entry apertures (119) of the shear foil (63) and the direction of two parallel cutting edges (153, 156) of the hexagonal hair-entry apertures (145) of the cutter blade (68) subtending an angle between 5.degree. and 25.degree., preferably between 14.degree. and 15.degree..
REFERENCES:
patent: 3093899 (1963-06-01), Futterer
patent: 3261097 (1966-07-01), Ritter
patent: 3382380 (1968-03-01), Rinck et al.
patent: 3602991 (1971-09-01), Heindrich et al.
patent: 3696508 (1972-10-01), Messinger
patent: 3893236 (1975-07-01), Nissen
patent: 4035914 (1977-07-01), Blume et al.
patent: 5185933 (1993-02-01), Messinger
patent: 5231760 (1993-08-01), Vioster et al.
Buzzi Valentin
Sereinig Ferdinand
Bartlett Ernestine C.
U.S. Philips Corporation
Watts Douglas D.
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