CA2572562A1 - Electromagnetic radiation shield pad for laptop computers - Google Patents
Electromagnetic radiation shield pad for laptop computers Download PDFInfo
- Publication number
- CA2572562A1 CA2572562A1 CA 2572562 CA2572562A CA2572562A1 CA 2572562 A1 CA2572562 A1 CA 2572562A1 CA 2572562 CA2572562 CA 2572562 CA 2572562 A CA2572562 A CA 2572562A CA 2572562 A1 CA2572562 A1 CA 2572562A1
- Authority
- CA
- Canada
- Prior art keywords
- radiation
- pad
- laptop computer
- user
- laptop computers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
- G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2200/00—Indexing scheme relating to G06F1/04 - G06F1/32
- G06F2200/16—Indexing scheme relating to G06F1/16 - G06F1/18
- G06F2200/163—Indexing scheme relating to constructional details of the computer
- G06F2200/1633—Protecting arrangement for the entire housing of the computer
Abstract
The invention relates to a device (1) for the continuous lengthening of a metal strip (2) by traction, said device comprising, in the strip transporting direction (R), at least three S-roll units (3, 4, 5, 6, 7) each provided with at least two rolls (8, 9, 10, 11, 12, 13, 14, 15, 16, 17). According to the invention, the rolls (8, 9, 10, 11, 12, 13, 14, 15, 16, 17) are positioned in such a way that the metal strip (2) is wound round them at a roll periphery angle (a) of more than 1801, and at least the second S-roll unit (4) in the strip transporting direction (R) comprises two rolls (10, 11) with different-sized diameters (D10, D11).
Description
ELECTROMAGNETIC RADIATION SHIELD PAD FOR LAPTOP COMPUTERS
DETAILED DESCRIPTION OF THE INVENTION
Laptop computers emit two types of electromagnetic radiation. The first is the extremely low frequency radiation, primarily emitted from the display screen, keyboard, and other electronic components. The second is the radio frequency radiation, primarily emitted from the wireless network antennas which are built in a majority of the modem laptop computers. According to recent researches, both types of radiation may pose health risks to the human beings. Although the risks are not precisely quantified by the research communities, there is strong demand for shielding devices that can reduce the user's exposure to radiation from laptop computers. There are three reasons that users are particularly concerned on radiation from laptop computers. Firstly, the equipment rests on the user's lap. The direct contact between the equipment and the user's lap maximizes the user's exposure to the electromagnetic radiation because the radiation is not weakened by any distance. Secondly, the equipment is placed at the user's genital level.
Although, there is no defmite proof that electromagnetic radiation has negative effects on human genitals, there is a great deal of concern that the radiation may disturb the normal function of human genitals such as testicles. Thirdly, as people depend more and more on computers to perform daily work, users most probably use laptop computers for long periods.
Figure 1 demonstrates how the user is exposed to the radiation from the laptop computer.
It is an object of this invention to provide a radiation shielding apparatus for laptop computers which can shield the user from unwanted exposure to radiation from radiation emitting components such as wireless networking antennas, keyboard, screen, etc. It is also an object of this invention to ensure the radiation shielding apparatus pose no interference on the normal use of the laptop computer.
As shown Figure 2, the shield pad comprises a flat sheet 2, two elastic bands 3 and 4 located at the two front corners of the sheet, one long belt 5 and one short belt 7 which are attached to the left and right side of the sheet. The end of long belt and short belt is installed with the hook and loop fastener (6 and 8) that can hold the two belts together.
Figure 3 demonstrates how the shield pad is mounted to a laptop computer. The corner elastic bands 3 and 4 allow the two front corners of the laptop computer to fit in first. Then pull the long belt 5 and short belt 7 to wrap around the laptop computer, fasten the hook and loop fastener. The two belts are located very close to the rear side of the pad therefore they don't cover any part of the keyboard. Most laptop computers don't have cooling vents at the bottom, instead they have the vents at a side. In another word, the shield pad doesn't interfere with cooling of the laptop computer. In fact, the shield pad helps block the heat of the computer from emitting onto the user's lap. Figure 5 demonstrates how the shield pad protects the user from the radiation.
The flat sheet 2 comprises three layers of fabric as shown in Figure 4. The top layer fabric 9 and the bottom layer fabric 11 are nylon. The shielding fabric layer 10 is placed in between. Layer 9 protects the shielding fabric 10 from being worn by the bottom of the laptop computer. Layer 11 protects the shielding fabric 10 from being worn by the continuous contact of the user's lap. Therefore the shielding fabric can stay free of damage for a long time of use while it shields the radiation off the user's lap and genitals with its highest effectiveness.
The long belt 5 and short belt 7 are thin, so are the hook and loop fasteners (6 and 8).
When the two belts are fastened, the laptop computer may still close its lid.
There are a number of manufacturers who produce laptop computers in a great variety of sizes. In order to fit these sizes, the shield pad is designed in several sizes. The two elastic bands (3 and 4) at the front corners of the shield pad are able to extend or shrink. The hook and loop fasteners (5 and 7) can extend or shrink to the extent of attaching surface as well.
Therefore each size of the shield pad fits a range of different laptop computer sizes.
DETAILED DESCRIPTION OF THE INVENTION
Laptop computers emit two types of electromagnetic radiation. The first is the extremely low frequency radiation, primarily emitted from the display screen, keyboard, and other electronic components. The second is the radio frequency radiation, primarily emitted from the wireless network antennas which are built in a majority of the modem laptop computers. According to recent researches, both types of radiation may pose health risks to the human beings. Although the risks are not precisely quantified by the research communities, there is strong demand for shielding devices that can reduce the user's exposure to radiation from laptop computers. There are three reasons that users are particularly concerned on radiation from laptop computers. Firstly, the equipment rests on the user's lap. The direct contact between the equipment and the user's lap maximizes the user's exposure to the electromagnetic radiation because the radiation is not weakened by any distance. Secondly, the equipment is placed at the user's genital level.
Although, there is no defmite proof that electromagnetic radiation has negative effects on human genitals, there is a great deal of concern that the radiation may disturb the normal function of human genitals such as testicles. Thirdly, as people depend more and more on computers to perform daily work, users most probably use laptop computers for long periods.
Figure 1 demonstrates how the user is exposed to the radiation from the laptop computer.
It is an object of this invention to provide a radiation shielding apparatus for laptop computers which can shield the user from unwanted exposure to radiation from radiation emitting components such as wireless networking antennas, keyboard, screen, etc. It is also an object of this invention to ensure the radiation shielding apparatus pose no interference on the normal use of the laptop computer.
As shown Figure 2, the shield pad comprises a flat sheet 2, two elastic bands 3 and 4 located at the two front corners of the sheet, one long belt 5 and one short belt 7 which are attached to the left and right side of the sheet. The end of long belt and short belt is installed with the hook and loop fastener (6 and 8) that can hold the two belts together.
Figure 3 demonstrates how the shield pad is mounted to a laptop computer. The corner elastic bands 3 and 4 allow the two front corners of the laptop computer to fit in first. Then pull the long belt 5 and short belt 7 to wrap around the laptop computer, fasten the hook and loop fastener. The two belts are located very close to the rear side of the pad therefore they don't cover any part of the keyboard. Most laptop computers don't have cooling vents at the bottom, instead they have the vents at a side. In another word, the shield pad doesn't interfere with cooling of the laptop computer. In fact, the shield pad helps block the heat of the computer from emitting onto the user's lap. Figure 5 demonstrates how the shield pad protects the user from the radiation.
The flat sheet 2 comprises three layers of fabric as shown in Figure 4. The top layer fabric 9 and the bottom layer fabric 11 are nylon. The shielding fabric layer 10 is placed in between. Layer 9 protects the shielding fabric 10 from being worn by the bottom of the laptop computer. Layer 11 protects the shielding fabric 10 from being worn by the continuous contact of the user's lap. Therefore the shielding fabric can stay free of damage for a long time of use while it shields the radiation off the user's lap and genitals with its highest effectiveness.
The long belt 5 and short belt 7 are thin, so are the hook and loop fasteners (6 and 8).
When the two belts are fastened, the laptop computer may still close its lid.
There are a number of manufacturers who produce laptop computers in a great variety of sizes. In order to fit these sizes, the shield pad is designed in several sizes. The two elastic bands (3 and 4) at the front corners of the shield pad are able to extend or shrink. The hook and loop fasteners (5 and 7) can extend or shrink to the extent of attaching surface as well.
Therefore each size of the shield pad fits a range of different laptop computer sizes.
Claims (8)
1 WHAT IS CLAIMED IS:
1. A radiation shielding apparatus in combination with a laptop computer emitting electromagnetic radiation, said radiation shielding apparatus comprising:
shielding means comprising a pad that is attached to the bottom of the laptop computer and fixing means for fixing and maintaining the pad at an operable position between the laptop computer and the user so that the pad is effective to prevent exposure of the user to the radiation from the laptop computer components such as keyboard, display screen, and wireless network antenna.
1. A radiation shielding apparatus in combination with a laptop computer emitting electromagnetic radiation, said radiation shielding apparatus comprising:
shielding means comprising a pad that is attached to the bottom of the laptop computer and fixing means for fixing and maintaining the pad at an operable position between the laptop computer and the user so that the pad is effective to prevent exposure of the user to the radiation from the laptop computer components such as keyboard, display screen, and wireless network antenna.
2. The apparatus of claim 1, wherein the pad comprises at least one of a radiation blocking material, a radiation reflecting material and a radiation absorbing material.
3. The apparatus of claim 1, wherein the fixing means comprises of two bands to fasten the laptop computer's two corners which are closest to the user.
4. The apparatus of claim 3, wherein the bands are elastic so that they can extend or shrink to fit different sizes of laptop computers.
5. The apparatus of claim 1, wherein the fixing means further comprises of two belts whose one end is attached to the pad and the other end is installed with means that can be fastened together.
6. The apparatus of claim 5, wherein the said belts can wrap around the laptop computer so as to fix the pad to the bottom of the laptop computer.
7. The apparatus of claim 1, wherein the pad comprises multiple layers of materials.
8. The apparatus of claim 7, wherein the multiple layers comprise of a top and bottom layers of nylon which protect the inner layer of radiation shielding material from damage or wear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2572562 CA2572562A1 (en) | 2006-12-22 | 2006-12-22 | Electromagnetic radiation shield pad for laptop computers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2572562 CA2572562A1 (en) | 2006-12-22 | 2006-12-22 | Electromagnetic radiation shield pad for laptop computers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2572562A1 true CA2572562A1 (en) | 2008-06-22 |
Family
ID=39551461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2572562 Abandoned CA2572562A1 (en) | 2006-12-22 | 2006-12-22 | Electromagnetic radiation shield pad for laptop computers |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2572562A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692965A (en) * | 2012-04-24 | 2012-09-26 | 郭晓磊 | Suspended radiation-proof cover for computer |
| GB2596613A (en) * | 2020-10-16 | 2022-01-05 | Angel Electronics Ltd | An electromagnetic shield |
-
2006
- 2006-12-22 CA CA 2572562 patent/CA2572562A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102692965A (en) * | 2012-04-24 | 2012-09-26 | 郭晓磊 | Suspended radiation-proof cover for computer |
| GB2596613A (en) * | 2020-10-16 | 2022-01-05 | Angel Electronics Ltd | An electromagnetic shield |
| GB2596613B (en) * | 2020-10-16 | 2022-12-07 | Angel Electronics Ltd | An electromagnetic shield |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |