Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Patent
1995-09-25
1999-11-30
Chin, Wellington
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
455 90, 455117, 455128, 343702, H04B 0108
Patent
active
059958545
DESCRIPTION:
BRIEF SUMMARY
THE PRESENT INVENTION relates to an accessory for a mobile communication device such as a mobile telephone, or a pager.
Mobile telephones and pagers are becoming more commonly used, but concern has been expressed about the possible dangers that may arise from using such devices. A mobile telephone is provided with a protruding antenna mounted on the body of the telephone, which radiates relatively high power radiation when the telephone is in use. It has also been found that the body of the telephone radiates power when the telephone is in use. When the telephone is in use the telephone is held with the body of the telephone adjacent the ear of the person using the telephone. When in this position the antenna is located immediately adjacent the side of the head of the person using the telephone. It has been suggested that this radiation may cause brain tumours or other brain disorders.
It is believed that other mobile communication devices, such as pagers, also radiate radiation, when in use, which is a potential health hazard.
The present invention seeks to provide an accessory for a mobile communication device which will make the mobile communication device safer to use. The accessory may be supplied separately for use with an existing communication device, or may be formed integrally with the communication device.
According to this invention there is provided an accessory for a mobile communication device having an antenna, said accessory comprising a shield adapted to provide an attenuating effect to radiation from the antenna of the device, and means to mount the shield on the device so that, in use, the shield is located between the antenna on the device and a person using the device.
It is envisaged that when the accessory is in use the shield, since it is located between the antenna on the device and the person using the device, and since it provides an attenuating effect on radiation from the antenna, will serve to significantly reduce the amount of radiation impinging on the person using the device.
It is believed that this expedient will serve to obviate, or at least reduce the risk of the radiation causing brain tumours or other brain disorders, or other medical conditions.
Preferably the shield incorporates an electrically conducting layer, such as a metallic foil, which may preferably be perforated to form a micro-screen, to attenuate the radiation from the antenna. Alternatively, the conductive layer may be a metallic scrim. Preferably the shield is in the form of a laminate.
The shield may be formed integrally with the device, or the shield may form an integral part of a case for the device, the case comprising the means to mount the shield in position on the device.
Advantageously the case is formed of a laminate including an electrically conducting layer to provide the shielding effect.
Conveniently the electrically conducting layer in the case comprises a micro-screen.
Preferably the shield is movable from an operative position to a collapsed position.
Conveniently the shield is adapted to be moved to the collapsed position by folding the shield about a substantially central line and then folding back two protruding portions of the shield.
Preferably the shield is provided with elements of hook and/or loop material to retain the shield in the collapsed condition.
In a further embodiment the shield is provided with means to fasten or secure the shield to the device.
Conveniently a region of the shield intended to be adjacent the ear-piece of the telephone is such that sound waves may pass through the shield in that region.
Preferably the shield incorporates an electrically conducting micro-screen, the micro-screen being exposed in that region so that sound waves may pass through the apertures in the micro-screen.
The invention also relates to a mobile communication device in combination with an accessory as described.
According to another aspect of this invention there is provided an accessory for a mobile telephone having an antenna, said accessory comprising a shield adapted to provide
REFERENCES:
patent: 4699804 (1987-10-01), Miyata et al.
patent: 4771927 (1988-09-01), Ventura
patent: 4874903 (1989-10-01), Clarke
patent: 5265273 (1993-11-01), Goodwin et al.
patent: 5335366 (1994-08-01), Daniels
patent: 5336896 (1994-08-01), Katz
patent: 5338896 (1994-08-01), Danforth
patent: 5367309 (1994-11-01), Tashijian
patent: 5410372 (1995-04-01), Lee
patent: 5444866 (1995-08-01), Cykievt
patent: 5535439 (1996-07-01), Katz
patent: 5550552 (1996-08-01), Oxley
Chin Wellington
Sobutka Philip J.
Wilson Leslie R.
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