Coating processes – Coating by vapor – gas – or smoke – Mixture of vapors or gases utilized
Reexamination Certificate
1999-08-20
2001-03-20
Beck, Shrive (Department: 1762)
Coating processes
Coating by vapor, gas, or smoke
Mixture of vapors or gases utilized
C427S255700
Reexamination Certificate
active
06203853
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a material for inverting positive static electricity (hereinafter referred also to as “static electricity inverting material”) and to a method for removing static electricity. The invention also relates to a crop rasing house used for keeping warm or sheltering crops from outside, and to a method for raising crops with the use of the crop raising house.
2. Description of Related Art
While there are cases where the static electricity is used advantageously, the static electricity may sometimes lead to the following harmful effects. Namely, when the static electricity is generated, there arise dynamic troubles such as adhesion or tangling of electrically charged material such as powders, fibers, sheets and the like to another material. Furthermore, in some cases, a combustible substance or an explosive substance takes fire or explodes when the static electricity is discharged. When a human body is charged with electricity, he or she receives electric shocks when discharging the electricity through contact with a grounded conductor. Moreover, the static electricity may be a cause for break, erroneous operation, or deterioration of quality in precision devices including semiconductor parts.
It has been said that the positive static electricity affects human bodies, causing kinds of diseases and troubles in health. In a positive electrostatic environment, the amount of cations existing in the air is high, so that the amount of cations in a human body increases correspondingly. As a result, the human body fails to actively undergo metabolic change thereby to decrease resistances to disease to be frequently taken ill. For instance, cations induce shoulder stiffness or sleep. On the other hand, anions favorably influence and activate cells, blood or moisture in human bodies (living bodies). The foregoing is well-known, and in this connection the presence or appearance of the positive static electricity is supposed to represent the decrease of anions.
For example, the interior of a running automobile is charged with positive electricity (700 to 1000 V) due to the friction of the automobile body with the air, whereby the driver becomes sleepy. That is, the static electricity is prone to cause car accidents. Not only automobiles, but also a variety of living environments produce the static electricity. Most of the articles including fluids produce static electricity, by way of familiar examples, image forming apparatuses using electron beams (TV sets, display devices and the like), fluorescent lamps, electric appliances such as air conditioners wherein liquid or gas flows, and devices using fluids such as petroleum, gas or the like (heaters and the like). Human bodies are exposed to the static electricity via these household appliances in considerably frequent occasions.
In the meantime, the potential in the air varies depending upon conditions of the weather and ground surface. For example, when a cold front or low atmospheric pressure passes, cations increase on the ground surface. Moreover, the concentration of cations is high also where an inverse wind or reverse wind rises easily. When cations increase, plants are hindered from growing well or badly damaged by diseases and pest insects. Meanwhile, when there is a columnar object standing straight on the ground surface, a slantwise potential difference increases in a space of a conical shape extending from the peak to the ground surface, so that a potential gradient is formed. In this conical space, the concentration of anions is high and therefore plants grow predominantly.
Among the factors influencing anion and cation concentrations other than the above, one is static electricity. In general, the cationic concentration is high in a positive electrostatic atmosphere, while the anionic concentration is high in a negative electrostatic atmosphere. In the case where about (+) 0.2 to 0.3 kV of static electricity exists in the atmosphere, it is possible to favorably raise crops if the static electricity is removed or turned into negative one. Particularly, when a vinyl house is used for raising crops, the external wind generates friction to the vinyl sheet, resulting in the increase of positive static electricity in the internal space. Besides, when the house is equipped with a ventilating means or air conditioning equipment, the stream of air is brought about inside the house, so that the positive static electricity is furthermore increased.
In order to eliminate such static electricity, there are a method whereby the electric charges are released quickly by increasing the conductivity of an object (e.g., by connecting the object to an earth line one end of which is buried in the ground), a method whereby ions having a different polarity are supplied to the generated electric charges by means of a discharging device utilizing an isotope or AC corona discharge thereby to neutralize the electric charges, a method of discharging the electricity in the air, etc.
It is, however, difficult to completely remove the static electricity in these methods, and it is needless to say that a large-scaled apparatus is required to turn the positive static electricity into negative.
SUMMARY OF THE INVENTION
The present invention has been made to eliminate the problems as described above and an object of the present invention is to provide a static electricity inverting material and a method for removing static electricity whereby the positive static electricity affecting human bodies can be eliminated without requiring any particular instrument.
A static electricity inverting material according to the present invention is characterized in that Si or SiO
x
(0<x<2) is vapor-deposited onto a base material.
Furthermore, a static electricity inverting material according to the present invention is characterized in that a silicon sheet made of Si or SiO
x
(0<x<2) is attached onto a base material by an adhesive.
Still further, a static electricity inverting material according to the present invention is Si or SiO
x
(0<x<2) shaped in a sheet-like or plate-like form.
Yet further, a static electricity inverting material according to the present invention is formed of Si, SiO
x
(0<x<2), or a mixture of Si or SiO
x
with an extender shaped into a sheet-like or plate-like form.
The above static electricity inverting material can turn the positive static electricity into substantially zero, and moreover into negative static electricity, so that adverse influences due to the positive static electricity can be avoided.
Regarding the composition of SiO
x
, a good effect is obtained when x=1 to 1.95, and the best effect is obtained when x=1.5, whereas the inverting material is hardly effective if x=2.0 (i.e., SiO
2
which is an insulating material). It is desirable that the static electricity inverting material is negatively ionized, and the more ionized it is, the greater effect described above is obtained.
A method for removing static electricity according to the present invention is characterized in that a static electricity producing body is separated from a body receiving the static electricity (hereinafter referred to simply as “static electricity receiving body”) by means of the static electricity inverting material having the above-mentioned constitution. In this method, when the static electricity producing body is isolated from the static electricity receiving body by means of the above-mentioned static electricity inverting material to such a degree as to make it hard for the static electricity to run ground, the static electricity can be reduced substantially to zero. Furthermore, if the static electricity producing body is perfectly isolated from the static electricity receiving body, the positive static electricity can be changed into negative one. Since the amount of anions is increased where the negative static electricity is present, it makes good to human bodies.
To separate the static electricity producing body f
Kikuchi Hideaki
Nakayama Taichiro
Ohara Toyoko
Takamatsu Kuniaki
Tanaka Kennosuke
Beck Shrive
Chen Bret
Darby & Darby
Takamatsu Kuniaki
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