Cutlery – Razors – With cooperating shearing blades
Patent
1991-06-24
1992-07-21
Watts, Douglas D.
Cutlery
Razors
With cooperating shearing blades
3034651, B26B 1902
Patent
active
051311470
ABSTRACT:
A reciprocal cam-powered razor in which the drive is effected through the use of multi-sided triangular section cams. Each cam has an odd number of cam faces and corresponding apices, beginning with a 3-face cam as of isosceles triangle of two equal length sides and with an apex in a normal or perpendicular line from a mid-length of the cam face. Other cams can be a 5-face or a 7-face and so on with odd numbers thereof. The inner sleeve of an inner and outer hair cutting sleeve head has a slot with longitudinally-spaced side edges against which apices of the respective cams work to reciprocate the inner sleeve in a multiple manner for but a single revolution of the drive shaft. Normal lines between each side and its apex will locate the axial center with which the cam will be co-aligned with drive axis of the handle body drive shaft. Arrangements are included wherein the cutting heads will be offset to permit some 280 degrees of the circumferential surface available for contact with the skin without interference of the handle body while carrying out the shaving operation. The multiple-faced cam has also been adapted for detachable cutting head attachments with the use of extension drive shafts within them. Provision has been made for the use of an axial drive shaft with several different cams to provide for a selection of different number of reciprocations of operation with one revolution of the drive shaft to render the razor more or less vibrator. The vibratory effect of these cams add a good feeling to the skin and direct hair into the cutting slots of the cutting head.
REFERENCES:
patent: 2253195 (1941-08-01), Oster
patent: 2661532 (1953-12-01), Salz
patent: 2819518 (1958-01-01), Lussier
patent: 3858314 (1975-01-01), Brenneman et al.
Plevyak Anna S.
Plevyak Joseph B.
Saulsbury Laforest S.
Watts Douglas D.
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