Cellular telephone with device to protect against radiation generated during its use

• US 6,628,784 B1
• Filed: 02/05/2001
• Issued: 09/30/2003
• Est. Priority Date: 06/22/1998
• Status: Expired due to Fees

• Current Assignee: Consulting Comunicacio I Disseny SL
• Original Assignee: Consulting Comunicacio I Disseny SL
• Inventors: Montane Condemines, Miquel
• Primary Examiner(s): Chiang, Jack
• Application Number:
  US09/719,386
• Time in Patent Office: 967 Days
• Field of Search: 379/433.01, 379/433.04, 379/433.07, 379/438, 455/90, 455/575
• US Class Current: 379/433.01
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/244 extendable from a housing along a given path
• CPC Class Codes: H01Q 1/245 with means for shaping the antenna pattern, e.g. in order to protect user against rf exposure
• CPC Class Codes: H01Q 1/32 Adaptation for use in or on road or rail vehicles
• CPC Class Codes: H04B 1/3805 with built-in auxiliary receivers
• CPC Class Codes: H04B 1/3838 Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
• CPC Class Codes: H04M 1/0202 Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets constructional features of telephone transmitters or receivers, e.g. of speakers or microphones H04M1/03
• CPC Class Codes: H04M 1/6041 Portable telephones adapted for handsfree use

Abstract

Cellular telephone with a device to protect against radiation generated during its use. It is divided into two groups: a radiation receiver-emitter group (6), consisting of the receiver, the emitter, the antenna (2) and a telescopically extendable support handle for the user, and a personal communication group (7), consisting of the speaker (3); the microphone (4); the keypad (12); the screen (17); and the said casing (5), both of the groups being connected one another via cable or wirelessly. During communication, the radiation receiver-emitter group (6) is distanced from the personal communication group (7), so that the power density of the radiation energy that reaches the personal communication group, and therefore the user, van be less than 0.1 microW/cm². In the absence of communication, the emitter group can be inserted in a snug manner in a housing provided for that purpose in the casing. It can be used either in individual or collective usages.

Claims

1. Cellular telephone (1) with a device to protect against radiation generated during its use, of the type comprising a speaker element (3);

a microphone (4);

a keypad (12);

a screen (17) and a casing (5), the said speaker element, the said microphone, the said screen and the said keypad forming a fixed group (7) of elements, or personal communication group, solid to the casing (5) of the cellular telephone (1), all this adapted in such a manner that during conversation, the personal communication group (7) can be manipulated by the user contiguous to the same, spaced apart from any microwave emitter a distance sufficient so that the power density of the radiation energy that reaches the personal communication group (7), and therefore the user, is less than a predetermined maximum value, maintaining communication in a cordless fashion, characterised in that it comprises a device for receiving electromagnetic radiofrequency waves and/or microwaves;

a device for emitting electromagnetic radiofrequency waves and/or microwaves and an antenna (2) forming a detachable group (6, 16) of elements, or radiation receiver-emitter group, which is provided with a user'"'"'s handle (9), susceptible of being distanced apart from the personal communication group (7) and communicating with the later either in a cordless fashion or by a cable (8), the handle being telescopically extendable so that it can be held in the user'"'"'s hand at a distance therefrom greater than 0.08 or 0.12 meters from the radiation receiver-emitter group, and the said radiation receiver-emitter group (6) being able to be removably inserted in a snug manner in a housing provided for that purpose in the casing (5), all this adapted in such a manner that during communication, the radiation receiver-emitter group can be distanced from the personal communication group (7), which is susceptible of being distanced a sufficient distance apart so that the power density of the radiation energy that reaches the personal communication group, and therefore the user, is less to the said predetermined value, maintaining communication between the radiation receiver-emitter group and the personal communication group either through the said cable (8) or wirelessly.

2. Cellular phone (1) according to claim 1, characterised in that the said maximum value of the radiation power density that reaches the personal communication group (7) can be less than 1 microW/cm² and preferable, in public spaces, less than 0.1 microw/cm², and in that it comprises an emitted power measuring means.

3. Cellular phone (1) according to claim 1, characterised in that the multiple personal communication groups (7) share a single radiation receiver-emitter group (16) that can be fixed in a casing adjacent to a building (20) or to a public transport means inside of which there are a plurality of users, the telephone being specially adapted for collective application, via cordless communication by means of sensors (24) communicated by a cable (23) with a single receiver-emitter group (16).

4. Cellular phone (1) according to claim 1, specially intended for an individual application, characterised in that the radiation receiver-emitter group (6) having a handle (9) for hand holding the first, can be fixed inside a compartment adjacent to a window or wall, radiation-permeable towards the exterior of the space (10) where the user is, screened to reduce radiation diffusion in the direction of the user, the handle (9) of the receiver-emitter group (6) protruding from the said compartment with the receiver-emitter group being placed inside the space (10).

5. Cellular phone (1) according to claim 4, characterised in that, being the said space (10) the compartment of an automobile, the compartment is accessible through a perforation made in the metal sheeting of the automobile roof, through which the handle (9) of the radiation receiver-emitter group (6) projects from within the compartment, connected via cable or cordless.

6. Cellular phone (1) according to claim 5, characterised in that it has a sleeve (21) for the protection of the receiver-emitter group (6) and its handle (9), which are detachably mounted, by magnetic means, to the automobile'"'"'s roof and connected via cable or cordless with the user'"'"'s personal communication group (7) in a “

hands-free set”

fashion.