Shaving apparatus having contoured heads

Details Shaving apparatus having contoured heads Shaving apparatus having contoured heads

1994-11-03

1996-08-13

Watts, Douglas D.

Cutlery

Razors

With cooperating shearing blades

3034651, B26B 1914

Patent

active

055444148

ABSTRACT:
A shaving apparatus is provided having at least one shaving unit comprising an external shaving member (3) and an internal shaving member (4) which is rotatably drivable relative to the external shaving member, the external shaving member having an annular wall portion (5) with lamellae (7) which extend in substantially radial directions and between which hair-entry apertures are formed, the radial ends (13) of the lamellae having a rounding radius (R) of 0.3-0.7 mm viewed in a radial direction, and the internal shaving member (4) comprising cutters (9) having cutting edges (10) which describe a path (11) adjoining the inner side (12) of the annular wall portion (5) of the external shaving member. In order to improve the shaving performance the shaving apparatus is characterized in that, viewed in radial cross-section, at least a part (14) of the outer side of the annular wall portion (5), which part is situated opposite the annular path (11) of the cutting edges (10), has an outwardly directed arcuate shape, the perpendicular distance (15) between the axially outermost point (16) of this arcuate part (14) and a line through those points (18, 19) of the outer side of the annular wall portion, which are situated directly opposite the inner diameter (20) and the outer diameter (21), respectively, of the annular path (11), being 12-100 .mu.m

REFERENCES:
patent: 3618210 (1971-11-01), Zuurveen
patent: 4393586 (1983-07-01), Hamashima et al.
patent: 4926550 (1990-05-01), Geertsman et al.
patent: 4998352 (1991-03-01), Tietjens
patent: 5390416 (1995-02-01), Uchiyama et al.

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