Cutlery – Razors – With cooperating shearing blades
Reexamination Certificate
2000-10-05
2003-07-01
Payer, Hwei-Siu (Department: 3724)
Cutlery
Razors
With cooperating shearing blades
C030S043300, C030S043500, C030S346510
Reexamination Certificate
active
06584691
ABSTRACT:
FILED OF THE INVENTION
This invention relates to shavers, and in particular to electric shavers including blades that, while rotating around their own centers, also orbit around another axis, thus sweeping a large area.
BACKGROUND OF THE INVENTION
It is known that facial hair does not grow perpendicularly. The typical angle between the axis of a hair and the surface of a face is between 30 and 60 degrees. To achieve the cleanest shaving, it is therefore necessary to move a shaver in different directions. Hair is best cut exactly against the direction of growth, which is substantially random. Therefore, any linear movement of a blade will not give the best cut for each and every hair, and an average result is achieved after shaving with modern razor or electric shaver. Some hairs are cut in the best direction and some are not. Typically, modern electric shavers have blades that move in a simple rotary path or linearly in a reciprocating manner. At a given location on a razor head, the movement of a blade is always in the same direction, or, in the best case, in two opposite directions. Although a user can compensate by manually varying the shaving pattern, this is a largely habitual action that does not necessarily provide a satisfactory remedy. Further, the actual cutting area on a typical shaver head is relatively small, and some areas of the face may not have as much exposure to the blades as other areas. There is a need to provide a shaving system that addresses these disadvantages.
Furthermore, experience with straight razors indicates that skin stretching leads to cleaner shaving. Stretching the skin makes it “thinner” and a greater length of hair is pushed out of the skin. Once stretched skin relaxes after being shaved with a straight razor, the remaining stub recedes beneath the surface of the skin and becomes effectively invisible. By contrast, after being shaved with a current electric shaver, the best result nevertheless leaves a hair stub as high as thickness of screen. Stretching of the skin in the process of electric shaver shaving would be advantageous.
BRIEF DESCRIPTION OF THE INVENTION
The invention provides an electric shaver in which a much greater area of the shaving head than hitherto is an active shaving area.
It further provides that the movement of the blades follows a more complex path than hitherto.
It further provides that adjoining blades are configured and driven so that they sweep overlapping areas. All of these features make it more likely that a blade will meet an individual hair from an appropriate direction.
The invention further provides an electric shaver that can stretch the skin, thus providing a cleaner shave than heretofore. The skin may be stretched by contouring the shaving head appropriately, or by providing a reduced air pressure within the shaving head.
Further, the invention provides that the shaving head may optionally be structured to replace a conventional shaving head on an existing shaver.
Finally, the invention provides that a shaver may be separated from its source of power. In such a divided system, a shaving head may be coupled to a stationary source of power such as might be provided in a car, in private quarters, or in a public washroom in a hotel, a restaurant, an office building, an aircraft, a train, an ocean liner or other building or vehicle. Such a shaving head can be inexpensive and intended for a small number of uses.
REFERENCES:
patent: 2283834 (1942-05-01), Van Dam et al.
patent: 2396181 (1946-03-01), Kerwer
patent: 2965966 (1960-12-01), Jacobs
patent: 3129507 (1964-04-01), Tweedale
patent: 4038747 (1977-08-01), Upton
patent: 4180906 (1980-01-01), May
patent: 4301593 (1981-11-01), May
patent: 4475285 (1984-10-01), Hara et al.
patent: 5625950 (1997-05-01), Sterk et al.
patent: 5983501 (1999-11-01), Izumi
patent: 6212776 (2001-04-01), Izumi et al.
patent: 2 531 898 (1984-02-01), None
patent: 52-116360 (1977-09-01), None
Gerasimov Ivan
Gerasimov Vladimir
Zainiev Gafur
Zainiev Inlik
Zlotin Boris
Aceto, Esq. Roger
Harter Secrest & Emery LLP
Payer Hwei-Siu
Shaw Esq. Brian B.
Technology Innovations LLC
LandOfFree
Electric shaver having orbitally moving blades does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electric shaver having orbitally moving blades, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric shaver having orbitally moving blades will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3035325