Toilet – Nail device – Compound tools
Patent
1983-01-20
1985-09-17
McNeill, Gregory E.
Toilet
Nail device
Compound tools
34 39, 219499, A45D 100
Patent
active
045414424
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to heat treatment apparatus for heating human hair on the head by means of a plurality of infra-red radiators fastened to a support.
Various forms of heat treatment apparatus are already known, for example that described in French Patent Specification No. 944 623, in which a respective infra-red lamp is attached to each of three mutually displaceable arms of a ground-supported stand. Apparatus having freely displaceable open radiator lamps lack uniform irradiation of the entire head surface. The considerable disadvantage results in that positional adjustment must be performed individually for each lamp in order to avoid local overheating of the hair. Further known heat treatment apparatus, such as that described in French Patent Specification No. 922 103, having a rigid arrangement of the infra-red radiators and a closed reflector casing, irradiates the hair with too low a total heating power, so that a long dwelling time becomes necessary.
SUMMARY OF THE INVENTION
It is an object of the invention to construct a heat treatment apparatus of the kind referred to above, in particular for permanent waving treatment, remedial treatment, or drying treatment in a hairdressing saloon, in such a manner that its operation is simplified and the risk of local overheating is reduced.
The present invention provides heat treatment apparatus in which at least three infra-red radiators constructed as surface radiators with a substantially line-shaped heater body curved like a circle segment are securely attached to the support arm which is displaceably mounted on a ground supported stand or a wall bracket, the infra-red radiator consisting of two lateral infra-red radiators and a central infra-red radiator which, in the position of use, is disposed thereabove, the centre axes, each of which extends in the direction of a radius of curvature, of two laterally disposed infra-red radiators include between them an angle of at least 80.degree., and the ratio of the length of the curved line-shaped heater body to the radius of curvature thereof amounts to at least 0.2.
An advantage of the open manner of construction is that operations on the hair can be performed during the irradiation process. It is advantageous above all during the drying of permanently waved hair. It is convenient for a temperature sensor to be arranged in the hair, preferably on the surface of a curl roller wound over with a strand of hair, which temperature sensor adjusts the heating power of the infra-red radiators to a predetermined nominal temperature by means of a control module which is preferably located in a control desk.
For the heat treatment, quite particularly for the very sensitive permanent waving treatment of the hair, the technical result depends in relatively narrow limits upon the heat energy and the dwell period. The heat energy parameter can be metered extremely accurately by means of the temperature regulation controlled by the temperature sensor. An advantage of the heat treatment apparatus according to the invention is the extremely uniform irradiation of all hair sections (neck, upper head, sides) with a high radiation energy.
In order to process chemical preparations in a faster and optimum manner, an accurately metered heat supply is of great usefulness. When these preparations operate without additional supply of heat, solely the momentary room temperature is present as energy supplier. Since this room temperature fluctuates strongly (dependent upon summer, winter, time of day), an exact statement of the process times is impossible. By means of a heat treatment apparatus a defined hair temperature is to be adjusted which lies above the room temperature. In order to obtain a uniform reaction of the chemical preparation, the temperature must be maintained constant as far as possible at each location of the hair.
Starting from the chemical consistency of the products, it has furthermore been investigated which kind of heat transmission is best suited. Since the products contain a v
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patent: 4256127 (1981-03-01), Tsujimoto
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patent: 4259566 (1981-03-01), Kobayashi
patent: 4265029 (1981-05-01), Jenkins
Bollinger Heribert
Hoch Dieter
Hollmann Siegfried
McNeill Gregory E.
Striker Michael J.
Wella Aktiengessellschaft
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