Cutlery – Razors – With cooperating shearing blades
Patent
1986-07-02
1988-01-19
Watts, Douglas D.
Cutlery
Razors
With cooperating shearing blades
30 4392, 318345E, 322 26, B26B 1914
Patent
active
047196980
ABSTRACT:
An electric shaver comprising a shaver housing comprising a generally rectangular box-like casing and a head casing removably mounted on one end of the box-like casing; a finely perforated stationary shear foil replaceably mounted on the head casing; a reciprocable blade assembly positioned inside the head casing and outside the box-like casing and cooperable with the stationary shear foil to cut bristles entering the head casing through the perforations in the stationary shear foil; an electric drive motor accommodated within the box-like casing and having a drive shaft, said drive shaft having first and second ends opposite to each other and protruding outwards from the motor in opposite directions away from each other; means for connecting the first end of the drive shaft with the blade assembly to permit the blade assembly to undergo oscillation relative to the stationary shear foil; a photoelectric detector comprising a light emitting element and a photoelectric cell for providing an electric output signal indicative of a parameter descriptive of the speed of rotation of the motor; and at least one printed circuit board incorporating a control circuit for controlling the motor in dependence on the output signal and accommodated within the box-like casing.
REFERENCES:
patent: 2731592 (1956-01-01), Federn
patent: 2748341 (1956-05-01), Federn
patent: 3343056 (1967-09-01), Hirschmann
patent: 4233733 (1980-11-01), Gallanis et al.
patent: 4611153 (1986-09-01), Wesling
Aoi Masashi
Ninomiya Kazunori
Shitama Katuaki
Kyushu Hitachi Maxell, Ltd.
Watts Douglas D.
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