Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor
Patent
1992-01-30
1993-08-03
Bennet, Henry A.
Drying and gas or vapor contact with solids
Apparatus
With means to treat gas or vapor
34 96, 219415, A45D 2000
Patent
active
052317706
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The invention is directed to a treatment device having an open design for human hair of the head.
Such devices are e.g. infrared heating devices, drying hoods, steam devices or combinations of these devices. The head of a person to be treated should always be positioned centrally in a treatment device. This is advantageous for various reasons. On the one hand the time required for drying the hair is minimized and on the other hand a uniform action of chemical preparations, e.g. permanent wave compositions, is achieved.
It cannot be assumed with the known devices that the position of the head of a person to be treated is stationary during the treatment period. The freedom of movement in the head area which is comfortable for the client has the disadvantage for hair treatment that a uniform treatment is not necessarily achieved. In the most unfavorable case a client falls asleep during the relaxing treatment and the hair is located clearly closer to a part of the treatment device adjoining the head space than to the part lying opposite. Or the client will sit upright at first and then will bend forward later with the upper part of the body or adopt a sitting position close to a reclining position. In both cases the client leaves the optimal treatment area in both the horizontal and vertical directions.
SUMMARY OF THE INVENTION
The object of the invention is to provide a treatment device for human hair on the head which does not restrict the freedom of movement of the head of the person to be treated and in which a position of the head which is particularly favorable for the results of the treatment is nevertheless ensured in a fixed position area during the entire treatment period.
In keeping with these objects and with others which will become apparent hereinafter, one feature of the present invention resides, briefly stated, in a device for monitoring the position of the head, which is provided in the area of the treatment device and is outfitted with at least one transmitter and at least one receiver for generating and receiving a measurement signal and a warning device for indicating undesirable head positions.
The treatment device according to the invention does not limit the freedom of movement of the head during the hair treatment since a measurement signal is used for monitoring the head position. Accordingly, a movement space within which a uniform treatment result can be achieved can be provided during the entire treatment period. The use of the measurement signal makes it possible to indicate to the client herself or to a service person in the hairdressing salon all undesired head positions of the client which are not in the permissible movement space and if necessary to evaluate the measurement signal for a special further treatment.
Another feature of the present invention it is advantageous to outfit the treatment device with at least one reflector at which the measurement signal is deflected. Accordingly, a plurality of defining lines of the permissible movement space can be monitored with only one measurement signal. For example, a triangular line monitoring can be effected in a plane with two reflectors.
Tested and inexpensive radiators and sensors can be used in the treatment device according to the invention by using infrared radiation or an ultrasonic signal as measurement signal.
If the transmitter and receiver for the measurement signal are constructed in one structural component part, fewer structural component parts and wiring are needed and these sensors can be used as proximity switches while the object to be detected is used as a reflector.
By aligning the transmitter at an acute angle relative to the horizontal line and arranging a reflector in this direction so that the measurement signal is reflected back to the transmitter it is possible to locate the change in the position of the head in two directions facing one another at a right angle by means of one measurement signal. The path of a measurement signal radiated from bottom to top behind the h
REFERENCES:
patent: 4912273 (1990-04-01), Matsui
Bennet Henry A.
Striker Michael J.
Wella Aktiengesellschaft
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