Cutlery – Razors – With cooperating shearing blades
Patent
1990-11-13
1992-06-09
Watts, Douglas D.
Cutlery
Razors
With cooperating shearing blades
3034651, B26B 1938
Patent
active
051195585
ABSTRACT:
A shaving apparatus is provided having at least one cutting unit comprising an external cutting member and an internal cutting member which is rotatable relative to the external cutting member, the external cutting member being formed with elongate hair-entry apertures, the longitudinal bounding walls of an aperture being substantially parallel. In order to improve the shaving performance the bounding walls of a hair-entry aperture are inclined from the outside towards the inside in the driving direction.
REFERENCES:
patent: 2533979 (1950-12-01), Vivie
patent: 4151645 (1979-01-01), Tietjens
patent: 4998352 (1991-03-01), Tietjens
de Jong Theo T.
Van Erp Wilhelmus P. M. M.
Bartlett Ernestine C.
U.S. Philips Corp.
Watts Douglas D.
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