Cutlery – Razors – Combined
Patent
1993-01-08
1997-03-04
Seidel, Richard K.
Cutlery
Razors
Combined
30 416, 219223, B26B 1944
Patent
active
056067984
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to hair cutting apparatus generally.
BACKGROUND OF THE INVENTION
There exists a great variety of hair cutting apparatus. These include single or multiple blade razors which are pulled across the surface of the skin and devices having an electrically powered vibratory element which drives opposing blades in a scissors type action.
U.S. Pat. No. 3,934,115 describes a method and apparatus for electric single cutting in which heated and opposed edges of two thin strips of metal form a slot, at which hair extending therethrough is singed to effect severance of the hair.
SUMMARY OF THE INVENTION
The present invention seeks to provide improved hair cutting apparatus.
There is thus provided in accordance with a preferred embodiment of the present invention hair cutting apparatus including a housing and laser apparatus disposed in the housing and arranged to provide a beam of light impinging on hair to be cut, the beam of light being operative to cut the hair.
In accordance with a preferred embodiment of the present invention, the laser apparatus is operative to provide a beam of light at a wavelength which is strongly absorbed by hair to be cut but not strongly absorbed by adjacent tissue.
In accordance with a preferred embodiment of the present invention, the wavelength of the beam is such that it is generally not absorbed by human skin.
A preferred wavelength range for operation of the shaving operation is 0.8 micron.
In accordance with a preferred embodiment of the invention the operational wavelength of the laser apparatus is selected to be such that only hairs of a certain color, such as white or gray hairs, are cut and the remainder of the hairs are not cut. A wavelength of 0.8 micron is suitable for this purpose. Such apparatus may be particularly useful for removing unwanted white or gray hairs automatically.
In accordance with a preferred embodiment of the present invention, the laser apparatus also comprises optical transfer means for directing the beam to the hair. The optical transfer means may include refraction and reflection means having optical power.
Additionally in accordance with a preferred embodiment of the invention, hair collection apparatus may also be provided in the housing for collecting loose hairs that have been cut by the laser beam. The hair collection apparatus may comprise a vacuum device or alternatively or additionally, electrostatic hair collection apparatus.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention will be understood and appreciated more fully from the following detailed description, taken in conjunction with the drawings in which:
FIG. 1A is a pictorial illustration of the use of a shaver constructed and operative in accordance with a preferred embodiment of the present invention;
FIG. 1B is a pictorial illustration of the use of a laser hair cutter constructed and operative in accordance with a preferred embodiment of the present invention;
FIG. 2A is a simplified sectional illustration of a laser shaver constructed and operative in accordance with a preferred embodiment of the present invention.
FIG. 2B is a simplified sectional illustration taken along the lines 2B--2B of FIG. 2A;
FIG. 3A is a simplified sectional illustration of a laser shaver constructed and operative in accordance with another preferred embodiment of the present invention;
FIG. 3B is a simplified sectional illustration taken along the lines 3B--3B of FIG. 3A; and
FIG. 4 is a simplified sectional illustration of a laser hair cutter constructed and operative in accordance with another preferred embodiment of the present invention.
DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT
Reference is now made to FIGS. 1A, 2A and 2B which illustrate a laser shaver constructed and operative in accordance with a preferred embodiment of the present invention. The laser shaver preferably comprises a housing 10, typically formed of plastic or of any other suitable material. Disposed within housing 10 is a laser apparatus 12, preferably comprising a laser source 14 an
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