Title:
Microsafe cloth for shielding microwaves
Kind Code:
A1


Abstract:
A microsafe cloth for shielding microwaves is made by weaving an electrical conductive fiber together with a generic fiber, wherein fine particles of Zirconium oxychloride, Beryllium Copper (BeCu), Magnesium, Titanium Dioxide (TiO2), etc., are doped in a high molecular polymer comprising Kevlar Caramid, Polyamide, Polypropylene, Polythiadiazole, and Poly tei ephthalat to form the electrical conductive fiber, whose content ratio shall decide the shielding rate against electromagnetic waves.



Inventors:
Lu, Johnny M. J. (New York, NY, US)
Application Number:
09/732790
Publication Date:
06/20/2002
Filing Date:
12/11/2000
Assignee:
LU JOHNNY M. J.
Primary Class:
Other Classes:
442/181
International Classes:
D02G3/44; D03D15/00; (IPC1-7): D03D15/00; D03D25/00
View Patent Images:
Related US Applications:



Primary Examiner:
IMANI, ELIZABETH MARY COLE
Attorney, Agent or Firm:
BACON & THOMAS (Alexandria, VA, US)
Claims:

What is claimed is:



1. A microsafe cloth for shielding microwaves, which is made by weaving an electrical conductive fiber together with a generic fiber, wherein fine particles of Zirconium oxychloride, Beryllium Copper (BeCu), Magnesium, Titanium Dioxide (TiO2), etc., are doped in a high-molecular polymer comprising Kevlar Caramid, Polyamide, Polypropylene, Polythiadiazole, and Poly tei ephthalat for creating the electrical conductive fiber.

2. The microsafe cloth according to claim 1, wherein the composition ratios of the chemical compounds are: Kevlar Caramid (16%); Polyamide (17%); Polypropylene (19%); Polythiadiazole (9.3%); Poly tei ephthalat (15%); Zirconium Oxychloride (2%); Beryllium Copper (BeCu 7.7%); Magnesium (Mg 1.2%); and Titanium Dioxide (TiO12%).

Description:

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention relates generally to a safety cloth, more particularly, it relates to a microsafe cloth that can protect people against electromagnetic waves.

[0003] 2. Description of the Prior Art

[0004] When we think of X-ray, a part of electromagnetic radiation spectrum with tremendous energy, the harmful-or-not doubt regarding electromagnetic waves is no longer a topic worthy of controversy though, the disputable point may concentrate at the readout of the on-the-spot intensity shown in a radiation detector—a Geiger counter or the like.

[0005] For safety purpose, the X-ray facilities in any hospital are well segregated and put under strict control to avoid energy leakage, and average people are fully informed not to take the X-ray examination too frequently because of its harmfulness.

[0006] Electromagnetic radiation may be sorted in two categories including radiation from natural background and radiation made artificially, wherein the former is ineradicable and the latter, such as X-ray, is controllable.

[0007] Moreover, the sun is the utmost powerful source of electromagnetic radiation of nature, wherein the ultraviolet ray is reportedly a vicious energy radiation that may injure people unperceivably to possibly result in a skin disease; and the storm incurred by the sunspot is also electromagnetic radiation in another form which is relatively difficult to predict. And, in addition to the solar system in the universe, some other energy sources, which are radiating electromagnetic waves, are so far beyond people's knowledge for further exploring.

[0008] When a little bit more attention is paid in recent days to the problem of electromagnetic radiation subsequent to science development, one will find out the abuse application of the invisible, inaudible, intangible, and odorless electromagnetic induction, except the X-ray facilities applied for medical care. For example, the high-frequency mobile phone is to create 900 MHz˜1800 MHz electromagnetic waves having much more energy than the generic electrical home appliance, and so far, the mobile phone is considered to produce both the thermal and the non-thermal effect of electromagnetic radiation concurrently.

[0009] Furthermore, the mobile phone is reportedly a factor to incur strokes and brain tumors because it is too close to a user's head in talking. Also, statistical data reveal that the traffic accident rate caused by using the mobile phone when driving is no less than that of drunk driving. In Australia, the mobile phone was alleged being responsible for having incurred two blasts in gas stations that made governments one after another proclaim “prohibition of using mobile phone in the gas station”.

[0010] “Many mobile-phone users complained suffering from headache from time to time after using mobile phone for couple minutes,” a clinical report stated. “And about 75% of those patients got relieved after discarding their mobile phones,” the report supplemented.

[0011] Regarding the thermal effect of mobile phone, it is known that electric power of an average mobile phone is only about 0.6 watt, which will probably raise temperature of the eyeballs and brain by 0.02° C. The temperature increment may be enlarged by extra 30% for one who wears glasses with metallic frame because of wave reflection.

[0012] According to a medical research made in Hong Kong based on a series of tests applied on twenty patients, who wore cardiac pacemakers, concerning non-thermal effect of electromagnetic radiation of the mobile phone, the 7 patients' cardiac pacemakers were conspicuously interfered when a researcher held a POWER-ON mobile phone close to each patient's left-front chest. The worst situation was that one of the cardiac pacemakers was temporarily paused for 6 seconds and the corresponding patient looked dizzy at heartbeat of 150 beats per minute in that duration—almost doubled the normal.

[0013] Recently, a medical center in Germany has tested and evaluated totally 231 kinds or types of the cardiac pacemaker, wherein 34% of the cardiac pacemaker is found interfered by a mobile phone at 900 MHz, not at 1800 MHz.

[0014] In Taiwan, about 10 thousand people who wear the cardiac pacemaker should refrain from approaching a 900 MHz mobile phone to avoid malfunction or failure of the cardiac pacemaker when the mobile phone is turned power on, power off, or a successful dial is made. In addition to the cardiac pacemaker, the mobile phone will interfere also the baby's warming chamber, the kidney dialysis machine, the automatic injection pump, the automatic dripping-syringe controller, etc.

[0015] Basically speaking, a bad effect to human beings is inevitable as long as electromagnetic energy is radiated, the only question is “How far?” For example, electromagnetic waves at a specified frequency range may affect one's heart to cause irregular changes of the electrocardiogram and the heartbeat speed; and others may interact with central nervous system to change activation of the sympathetic or the vagus nerve. In the case the activation response of the sympathetic nerve is drastic, the blood vessel contracts and the heartbeat speeds up to put the patient under risk of death. Or, when electromagnetic waves stimulate the vagus nerve, the heartbeat slows down to cause “hypotension”, which is usually accompanied by low blood-flow rate to the central nervous system and some related organs. Basing on body experiments conducted in U.S.A., an examinee's heartbeat slowed down and respiration frequency speeded up when the examinee was exposed to an electromagnetic field of 16 Hz at intensity 200 milligauss.

[0016] An average electric home appliance usually releases electromagnetic waves of 60 Hz with instantaneous intensity up to 200 milligauss, hence, a heart-disease patient should be more careful when using the electric home appliance.

[0017] A report from Russia regarding occupation sickness has drawn a conclusion stating that an engine driver working on an electric power train is risking a double chance of suffering from Coronary artery infarction than on a coal train because of environmental electromagnetic waves at intensity of 1300˜2800 milligauss after investigation on death-rate of engine driver was made by polling 45 thousand engine drivers.

[0018] A research made in Poland revealed that blood pressure of 60 employees working in broadcasting stations and exposed to 1 Hz˜150 MHz electromagnetic radiation in a long-term period were relatively unstable compared with that of people working under normal conditions.

[0019] One's blood pressure is fluctuated cyclically in a day, from the lowest at dawn and climbing through noon to reach the highest around 6 p.m. when he is tired out. The biological clock of those employees for control of blood pressure were changed by electromagnetic waves to reach the utmost value early at 11˜12 a.m. before noon though it was due around 6 p.m. as mentioned.

[0020] In short, when people expose to electromagnetic radiation in a long-term period, their hearts operation will be surely affected—a six-fold abnormal variate in the electrocardiogram for example. Therefore, the medical researchers in Poland suggested one to take a necessary round-clock electrocardiogram analysis in hospital for continuous tracing to see if his heart operation was unduly affected by electromagnetic waves should he find himself dizzy or suffering from headache or angina pectoris.

[0021] For shielding electromagnetic waves, most of the related utilities available in the market concentrate on the mobile phone, usually surrounding or adjacent to the antenna thereof. Instead, the microsafe cloth of this invention can be tailored for fabrication of various shielding dresses for occupational use in addition to a protective sheath of mobile phone.

SUMMARY OF THE INVENTION

[0022] The primary object of this invention is to provide a microsafe cloth for shielding microwaves, which is woven out of an electrical conductive fiber blended with a generic fiber for fabricating various kinds of dresses that can protect people against electromagnetic waves.

[0023] The conductive fiber of the safety cloth of this invention is basically a substance composed of Kevlar Caramid, Polyamide, Polypropylene, Polythiadiazole, and Poly tei ephthalat, and doped with high molecular fine particles of Zirconium Oxychloride, Beryllium Copper (BeCu), Magnesium (Mg), Titanium Dioxide (TiO2), etc. The shielding rate of the safety cloth shall depend on the ratio of blended quantity of the electrical conductive fiber.

[0024] For more detailed information regarding this invention together with further advantages or features thereof, at least an example of preferred embodiment will be elucidated below with reference to the annexed drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The related drawings in connection with the detailed description of this invention, which is to be made later, are described briefly as follows, in which:

[0026] FIG. 1 is a three-dimensional view showing an embodiment of antenna sheath for mobilephone made with the cloth of this invention;

[0027] FIG. 2 is a three-dimensional view showing an embodiment of woman's dress made with the cloth of this invention;

[0028] FIG. 3 shows an embodiment of bonnet in three dimensions made with the cloth of this invention;

[0029] FIG. 4 shows an embodiment of sock in three dimensions made with the cloth of this invention;

[0030] FIG. 5 shows an embodiment of glove in three dimensions made with the cloth of this invention;

[0031] FIG. 6 shows an embodiment of protective sheath of mobilephone in three dimensions made with the cloth of this invention;

[0032] FIG. 7 shows an embodiment of dust-proof computer cover in three dimensions made with the cloth of this invention;

[0033] FIG. 8 shows an embodiment of notebook computer bag in three dimensions made with the cloth of this invention;

[0034] FIG. 9 shows an embodiment of quilt in three dimensions made with the cloth of this invention; and

[0035] FIG. 10 shows an embodiment of pillow in three dimensions made with the cloth of this invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0036] A microsafe cloth for shielding microwaves of this invention made by blending an electrical conductive fiber with the generic fiber contains constituents including Kevlar Caramid (16%), Polyamide (17%), Polypropylene (19%), Polythiadiazole (9.3%), Poly tei ephthalat (15%), Zirconium Oxychloride (2%), Beryllium Copper (BeCu 7.7%), Magnesium (Mg 1.2%), Titanium Dioxide (TiO2 12%), etc., wherein the Polyacryonitrile is derived from the long-bond Acryonitrile-[-CH2CH(CN)-]65% by adding Vinyl Chloride for radical substitution to alter its chemical properties without changing structure thereof substantially. During the polymerization process and under existence of Benzoyl Chloride, a high molecular porous substance is created for doping with the 7.7% Beryllium copper fine particles in nano order (10−9) and for being fused and drawn to become the compound conductive fiber, which is offered with a relatively better durability against rinsing, kneading, or rubbing, a tensile strength at 4 g/denier, and a hygroscopic rate of 2.5% down. The conductive fiber is then blended with a generic fiber and twisted together by a hollow-spindle fine spinning frame for knitting or weaving conductive cloth in different ratios, and the shielding rate thereof against radiation of electromagnetic waves shall fully depend upon the content percentage of the conductive fiber.

[0037] The valuable metals contented polymer cloth of this invention which is chemically stable and insoluble in water is particularly fit to the frequency band 700 MHz˜900 MHz for body protection and is characterized in:

[0038] 1. Excellent chemical and physical stability, no bad effect to the material conductivity by rinsing, kneading, rubbing, stretching, rain-showering, sun-shining, or being invested amidst thin fogs, dilute acid or alkaline solutions;

[0039] 2. Anti-oxidizing property;

[0040] 3. Light, soft, and ventilative structure for serving as a lining material of shielding dress or being tailored in underwear or T-shirt; and

[0041] 4. Capability of the functional fiber thereof for meeting customers' requirements to realize protection purposes in multiple respects.

[0042] In addition to protective dress for shielding electromagnetic waves, the cloth of this invention may be applied for protective sheath of a mobilephone as shown in FIG. 1, wherein a tailored cloth 2 of this invention is attached on inside face of a cylindrical rubber sleeve to serve for a protective sheath 1 to shield electromagnetic waves.

[0043] From FIG. 2 all the way up to FIG. 11, various embodiments are shown to reveal that the cloth of this invention may be used for making woman's dress 3, bonnet 4, sock 5, glove 6, mobile phone's sheath 7, dust-proof cover for desktop computer 8, notebook computer's bag 9, quilt 10, and pillow 11 respectively. Besides, the cloth of this invention may also be applied in architecture, purse, housing of electrical home appliance, electrical felt, etc., for shielding electromagnetic waves.

[0044] In the above described, at least one preferred embodiment has been elucidated with reference to the drawings annexed, and it is apparent that numerous variations or modifications may be made without departing from the true spirit and scope thereof, as set forth in the claims below.