WO1997003511A2

WO1997003511A2 - Hand-held radiotelephone

Info

Publication number: WO1997003511A2
Application number: PCT/IB1996/000663
Authority: WO
Inventors: Andreas Peiker
Original assignee: Andreas Peiker
Priority date: 1995-07-10
Filing date: 1996-07-10
Publication date: 1997-01-30
Also published as: WO1997003511A3; DE29623336U1

Abstract

A hand-held radiotelephone (1) has control elements such as a keyboard (2) and a display field (3). A movable covering element (6) that protects one or several control elements when the hand-held radiotelephone (1) is not in use may be closed over the parts that need to be protected in a water-tight manner. In one preferred embodiment, the printed circuit board with the electronic circuits is sealed in the housing with plastic foam.

Description

Handheld radio telephone

Technical field

The invention relates to a hand-held radio telephone with control elements such as a keyboard and display panel and a movable cover element, which is used to cover sensitive parts of the control elements when the hand-held radio telephone is not in use. State of the art

Since the hand-held radiotelephones are getting smaller and smaller, the advantage of a pull-out housing part with a hearing or speaking capsule has been recognized when the size falls below a certain size. In the case of particularly small devices, the distance between the hearing and speaking capsules is set to the mouth / ear distance of the user.

From EP 0 580 334 A2 (Sony Corp.) a handheld radio with an extendable earpiece is known. The extendable, shell-like part has no other purpose than to extend the listening / speaking distance. In particular, no operating elements are covered.

From DE 38 36406 A1 (Robert Bosch GmbH) a hand-held radio telephone with an extendable cassette is known, at the end of which a speech capsule is attached. The device is curved like a banana and can thus be advantageously adjusted to the listening / speaking distance. When pulled in, the cassette covers all operating elements (keyboard, LCD display) including the earpiece.

A radio telephone is known from EP 0 536 578 A2 (Siemens) which has two sleeves which can be moved downwards or upwards and thus release the middle part with the operating elements. The speech and hearing capsules are attached to the extendable parts. The two sleeve-like parts completely take up the middle part when they are pushed together. A similar construction is known from DE 42 02383 C2 (Loewe Opta GmbH).

From GB 2 226429 a hand-held radio telephone with an extendable slide is known, which on the one hand carries the earpiece and on the other hand covers part of the display when inserted. Other constructions with partial or complete coverage of the controls result, for. B. from WO

REPLACEMENT BLAπ (RULE 26) 94/13088 (Motorola Inc.), DE 43 07 154 A1 (Konstantin Design GmbH), DE 44 10 995 A1 (Sägern), WO 94/21054 (Wilson) or WO 94/18817 (Increa Oy).

Presentation of the invention

The object of the invention is to provide a hand-held radio telephone of the type mentioned at the outset which is mechanically resistant and is therefore particularly suitable for use under adverse weather and ambient conditions.

A hand-held radio telephone according to the invention of the type mentioned at the outset is characterized in that the cover element can be closed in a watertight manner via a part of the operating elements which is in need of protection.

The cover element can preferably be pushed at least over the display panel in the manner of a retractable and extendable slide. When the device is not in use, the display becomes effective, not only against scratches, but also generally against water and liquids.

The cover element can be secured in the closed position by a locking mechanism. In the closed position, it is preferably held against the force of a tensioned opening mechanism, so that when the locking mechanism is unlocked, the cover element is automatically brought into the open position by the opening mechanism.

In the case of a hand-held radio telephone with a shell-like housing, in the interior of which a printed circuit board with electronic components is accommodated, the printed circuit board can be at least partially encapsulated with the housing with the aid of a foam plastic in order to increase the mechanical shock resistance. It is also advantageous if the circuit board is screwed to the housing. The cover element does not necessarily have to be extendable. It can also be movable back and forth between two positions without increasing the length of the device.

The cover element can also be designed as a blind. It is a closure with movably connected lamellar elements. The flexible connection between the elements allows the blind to be guided around the edges of the handheld radio telephone (in a similar way as is known, for example, from filing cabinets). The cover element (in particular the blind) can preferably be moved in the longitudinal direction of the housing on the surface of the hand-held radio telephone. The blind has the advantage that opening the cover does not lead to an enlargement of the outer dimensions of the handheld radio telephone.

If the cover is designed as a slide which carries an earpiece, then it can be used in a manner known per se to enlarge the listening / speaking distance.

According to an advantageous embodiment variant, the cover element is transparent at least in some areas. The transparent part gives z. B. the view of the existing control elements or a part thereof, without revealing their protection.

The cover element is preferably designed in the manner of a sleeve which is open on one side and which is equipped along an open end face with an elastic sealing element and preferably with tongue-like or slot-like guide elements. The guide elements ensure that the sealing arrangement is correctly positioned in each case between the end faces pressed against one another and can thus optimally fulfill its function.

The housing body is slidably mounted in the open side of the cover sleeve. Nowadays, hand-held radio telephones are usually provided with a power supply part which can be exchangeably fastened to a housing of the hand-held radio telephone and which electrical contacts can be connected to a circuit part of the hand-held radio telephone. According to the invention, the electrical contacts are protected from the outside by a sealing device when the power supply part is attached to the hand-held radio telephone. The power supply part (an accumulator or battery pack) is usually attached to the rear of the housing. It is obvious that this aspect of the invention does not necessarily have to be used in connection with the waterproof, closable cover.

The power supply part can preferably be fixed to the housing by a clamping device, in order to ensure the watertightness by means of a suitable pressing force on the sealing device. A pressing force generated in this way is sufficient to ensure a closed sealing line (surrounding the electrical contacts) (in contrast to only punctiform pressure points).

The clamping device preferably comprises a screw or bayonet lock. So z. B. Two knurled screws can be provided to generate the most uniform possible pressure.

According to a special feature of the invention, the power supply part, which is watertightly attached to the housing, encloses an air volume which gives the hand-held radio telephone sufficient buoyancy for swimming. If the device accidentally falls into the water (e.g. while sailing), it will not be damaged and cannot sink.

The clamping device is preferably arranged outside a region defined by the sealing device (for example using a latching or buckle closure acting on the outside of the housing). The closure mechanism itself is therefore completely in the unsealed part and therefore does not result in any sealing problems.

Further advantageous exemplary embodiments and combinations of features result from the following detailed description and the entirety of the patent claims. Brief description of the drawings

The drawings used to explain the exemplary embodiments show:

1a, b is a perspective view of a hand-held radio telephone with a slide-like cover;

Fig. 2 is a schematic representation of a sealing device and one

Closure;

3a-c show a hand-held radio telephone with a sleeve-like cover to protect the display panel and the function keys;

4a, b show a schematic illustration of an embodiment with a sleeve-like cover that appreciates all the operating elements;

5 shows a schematic illustration of a hand-held radio telephone with a blind-like cover;

6a-c an illustration of a hand-held radio telephone with a cover which can be displaced between two extreme positions;

7a, b an illustration of a hand-held radio telephone with a rotatable protective cover.

Fig. 8 is a schematic representation of a handheld radio telephone with a

Screw fasteners attached power supply part;

FIG. 9 shows a schematic illustration of a locking mechanism and an opening mechanism for a cover according to FIG. 1. In the drawings, basically the same parts are provided with the same reference numerals.

Ways of Carrying Out the Invention

1 a, b show a first exemplary embodiment of a hand-held radio telephone 1 according to the invention. This has, in a manner known per se, a keyboard 2, an LCD display 3, a speech capsule 4 (at the lower end) and an earpiece 5 (at the upper end) of the handheld radio telephone 1). The earphone 5 is attached to a cover 6 which can be moved in the longitudinal direction of the hand-held radio telephone. 1 a shows the extended and FIG. 1 b the retracted (or closed) position, in the area of the LCD display 3 the body of the hand-held radio telephone 1 is tapered in such a way that the cover 6 is steplessly closed in the closed state (FIG. 1 b) connects the surface area of the keyboard 2.

On the (lower) end faces 8 of the cover 6, a sealing device is provided, as is used for. B. is explained below with reference to FIG. 2. 1a, b the seal is not shown for the sake of simplicity.

In order to be able to fix the cover 6 in the closed position, a closure 7 is provided. It locks the cover 6 in the closed position and at the same time ensures the necessary pressing force on the sealing device.

It goes without saying that, in order to ensure watertightness, sealing devices which form a closed line must in principle be provided continuously along the end faces between the cover 5 and the rest of the housing of the hand-held radio telephone 1. The hand-held radio telephone 1 shown in FIG. 1 has, for. B. via corner reinforcements 9.1, 9.2 on the lower corners of the housing to provide protection when the device falls down. Furthermore, the front longitudinal edges in the area of the keyboard 2 are provided with finger grips 10.1, ..., 10.4 (indentations). An antenna 11 can e.g. B. pulled out with the cover 6 (Fig. 1a). However, the antenna 11 can also be attached to an immovable housing part of the handheld radio telephone 1 so that it cannot be extended or extended.

2 schematically shows an example of a watertight connection and a closure. With 12 and 13 two relatively movable, shown in section housing parts are designated; z. B. the housing part 12 is the sliding cover 6 and the housing part 13 of the housing body on which the cover 6 is displaceable. In Fig. 2, a tight connection between the end faces 14, 15 of the Ge housing parts 12 and. 13 manufactured. For this purpose, a sealing rubber 18 is embedded in the end face 14 or fixed to it. A (for example smooth) contact surface is formed on the corresponding point of the end face 15, against which the sealing rubber 18 can be pressed. In addition to the sealing rubber 18, a (for example peg-shaped) tongue 16 projects beyond the end face 14. A slot 17 (which, for example, is slightly conical) is provided at the corresponding point on the opposite end face 15. When the housing parts 12 and 13 are pushed together, the tongue penetrates into the slot 17 and in this way ensures a reproducible, precise positioning of the end faces 14 and 15 on one another.

The housing parts must be pressed against one another relatively strongly in order to exert the required pressing force on the sealing rubber 18. The closure mechanism, which, for. B. by a locking lever 19 on the housing part 12 and through a recess 21 on the housing part! 13 is formed, engages when the housing parts 12 and 13 are pressed against one another as required. A nose 20 at the front end of the latching lever 19 snaps into the recess 21, since the lever 19 is designed such that when the housing parts 12 are joined together and 13 is subjected to a bending deformation until the nose 20 engages in the recess 21.

To ensure the sealing of a longer contact line, several tongues / slot arrangements should preferably be used.

Of course, other sealing and closure devices are also possible to create the watertight seal.

3a-c shows an embodiment of a hand-held radio telephone with a housing body 23 and a cover sleeve 22. As can be seen in FIG. 3a, the cover sleeve 22, which is open on one side, has a window 29 (transparent area), which is in the closed position State (ie with the cover sleeve 22 retracted) which mechanically covers the display panel 26 arranged in the upper region of the housing body 23 and the function keys 25 arranged underneath. In contrast, the selector buttons 24 in the lower region of the housing body 23 are not covered. At the bottom of the housing body 23 there is a speech capsule! 28 (microphone). A hearing capsule 27 (loudspeaker) is arranged on the upper part of the cover sleeve 22 and can be pulled out together with the cover sleeve 22.

Fall protection 30 at the upper end of the cover sleeve 22 protects the antenna 31 against damage,

3b shows the cover sleeve 22 in the extended state. It now releases the function keys 25. The display field 26 is located behind the window 29 in front of us. In the extended state, the hand-held radio telephone is ready for operation. However, it cannot be ruled out that calls can also be made when the phone is pulled in. This depends on the internal wiring of the device.

The housing body 23 fits into the (only) opening of the cover sleeve 22. In other words, the cover sleeve 22 is like a hat which can be pulled over the housing body 23. 3c shows the hand-held radio telephone from behind and in the closed state. To open the hand-held radio telephone z. B. operated or unlocked a shutter 33. A handle 32 (which can also be designed to actuate the closure) makes it easier to grasp the cover sleeve 22 when it is inserted or removed. To simplify handling, e.g. For example, a spring mechanism (not shown) can be provided in the device, which pushes the cover sleeve 22 upwards when the closure 33 is unlocked.

The antenna 31 is extendable. You can e.g. B. be attached to the cover sleeve 22, in which a receiver circuit can also be accommodated. The cover sleeve 22 can - apart from the earpiece 27 - also contain functional parts of the telephone.

Fig. 4a, b shows a variant of Fig. 3a-c. The main difference is that the cover sleeve 35 is longer and extends so far down that not only the display field 38 and the function keys 37 but also the selection keys 36 are covered. In the extended state (according to FIG. 4b), however, both dialing keys 36 and function keys 37 are released. The housing body 34 can be of the same design as in the previous embodiment.

The exemplary embodiments according to FIGS. 3a-c and 4a, b can be modified in various aspects. The window can e.g. B. also be omitted, d. H. that the entire cover sleeve 22 or 35 consists of a non-transparent plastic. The cover sleeve 22 or 35 must then be able to be pulled out so much that the display field is also released.

Fig. 5 shows an alternative cover 39. It is designed in the manner of a blind and can be pushed up over the end face 40 of the handheld radio telephone. Appropriate guides are provided on the side walls of the hand-held radio telephone, so that the cover 39 (around the end face 40) can be displaced onto the rear of the hand-held radio telephone. A handle 41 for releasing a lock makes it easier to grasp the cover 39 when it is opened or closed. 6a-c shows a hand-held radio telephone with a plate-shaped, rectangular cover 48 on a front side 50 of the housing. The cover 48 can be pushed back and forth between extreme positions. In the lower extreme position according to FIG. 6b, the LCD display 52 is covered. Because the cover 48 has a rectangular, centered opening, the middle row of the z. B. 3-line LCD displays 52 visible. In the upper extreme position shown in FIG. 6c, the cover 48 would cover the openings of the earpiece 51 if the opening 49 were not there. The LCD display 52 is released in this position. The cover 48 preferably engages in the two extreme positions.

7a, b shows a variant of the embodiment according to FIGS. 6a-c. A turntable 54 is movably mounted in a circular frame 53. One half of the turntable 54 is provided with a large window opening 55. The other half has a plurality of holes 56. A handle 57 (recess) makes it easier to grasp the turntable 54 when rotating. In the position shown in FIG. 7 a, the turntable 54 covers most of the LCD display 58. In the present example, only the top line is visible. In addition to the top line of the LCD display, the window opening 55 also releases the earphone 59.

In the position shown in FIG. 7b, the window opening 55 releases the entire LCD display 58. Holes 56 allow sound to escape from earpiece 59. Turntable 54, which acts as a cover, can also preferably be snapped into the 180 ° different positions according to FIGS. 7a and b.

FIG. 8 shows a possibility of attaching a battery or an accumulator pack or, more generally, a power supply part 43 to the rear of a housing front part 42. In the present example, the power supply part 43 has the same dimensions as the front housing part 42. It is clamped to the front housing part 42 with two screw caps 45.1, 45.2. A circumferential seam 44 is formed between the front housing part 42 and the power supply part 43, which is waterproof according to the invention. This is e.g. B. by a circumferential rubber sealing ring reached, which is clamped between the two parts with the help of screw caps 45.1, 45.2.

By turning the screw caps 45. 1, 45. 2 (knurled screws) z. B. 90 °, the power supply part 43 is clamped on the back of the front housing part 42. By using two knurled screws, a uniform, flat pressure of the seal can be achieved. A lever 46 is indicated, which can be provided for actuating the screw or bayonet lock 45.1 as required. Furthermore, a clip 47 is located, which serves to use the hand-held radio telephone z. B. to attach to the belt. In the embodiment shown in FIG. 6, there can be an airtight space between the power supply part 43 and the front part 42 of the housing which is so large that the hand-held radio telephone can float on the water. Another possibility is that an air bag can be attached to the outside (for example on an additional clip), which provides the necessary buoyancy.

Particular attention is paid in the context of the invention to the impact resistance of the device. If the hand-held radio telephone falls to the ground or if it is violently hit for another reason, it should not be damaged. According to a preferred embodiment, the circuit board is cast in the housing. For this purpose, part of the interior of the housing can be sprayed with a solidifying foam plastic in such a way that the printed circuit board is firmly embedded. For example, the free space between the rear of the circuit board and the rear half of the housing can be completely filled with a PU foam. Under certain circumstances, however, it is sufficient to embed the edge or only the corners of the circuit board in the foam plastic. Additionally or alternatively, the printed circuit board can be screwed to the housing.

If the hand-held radio telephone has a sliding or movable cover to protect the LCD display, it is preferably ensured by means of a lock that the cover does not open by itself in the event of an impact can. To unlock the cover, for example, a button or a button can be provided on the long side of the housing, which - depending on the positioning - can be operated with the thumb (or another finger). In a further embodiment of the invention, the cover is held in the closed position by the locking against the force of a spring. If the unlocking button is actuated, the cover is brought into the open position by the spring force mentioned.

A safety lock is also recommended for the exchangeable battery pack.

The LCD display is e.g. protected against dangerous shocks by storing it in foam rubber.

Another measure to reduce the risk of damage to the housing is to round off corners and edges. In the case of a housing made of plastic shells, an impact-absorbing coating (e.g. made of neoprene or the like) can be attached to the outside. Moreover, it is obvious that the use of unbreakable materials is advantageous. The window of the LCD display is preferably made of a scratch-resistant material or is provided with a scratch-resistant coating.

To protect against water, dust, dirt etc., all-round rubber seals or the like are to be found at the points where the housing parts are joined. intended. The LCD window can be glued directly to the housing. The sound transducers (microphone, loudspeaker) can be covered with a semipermeable membrane, which rejects the water but allows sound waves to pass through as well as possible. (Such a membrane can be made, for example, from the material that is commercially available under the GoreTex trademark.) The keyboard is also sealed as a unit, for example by covering it with a stretchable, water-impermeable film. A sensor keyboard can be used for the same purpose, i.e. a membrane keyboard cast in transparent plastic and sealed in this way. If the hand-held radio telephone has a plug (for example, for connection to a car telephone, an external battery, an external loudspeaker, an external microphone or the like), then this can be closed in a water- and dust-tight manner with a screw or plug closure. It is also conceivable that a plug is protected behind a tightly closable flap or cover. For example, the connector can be placed in such a way that it is only accessible when the sliding cover of the LCD display (or the keyboard) is open. In this sense, the plug can be attached, for example, at the level of the LCD display on the narrow side of the housing.

Fig. 9 shows schematically e.g. 1 suitable locking mechanism for the embodiment of FIG. Reference number 60 denotes the housing wall in the area of the longitudinal narrow side of the hand-held radio telephone. An unlocking button 61 is embedded in it. It sits, for example, on a lever 62 housed in the housing, which can be pivoted about a pivot point 63 such that a locking hook 64 (which engages in a recess 65 of the cover 6 in the rest position) when the unlocking button 61 is pressed (see arrow ) is pulled out of the recess 65. An element 66, on which a spring 68 engages, is formed on the cover. The latter is hooked into an anchor point 67 on the inside of the housing. When the unlocking button 61 is actuated, the cover 6 is opened by the tensioned spring 68.

In order to ensure that the locking hook 64 cannot jump out of the recess 65 in the event of an impact, an additional locking mechanism can be provided which blocks the lever 62. The locking mechanism is operated with a separate button. To open the cover 6, two buttons must then be pressed simultaneously.

9 shows only one of many possibilities for implementing a locking and opening mechanism. Some advantageous options are given below.

So that the hand-held radio telephone can also be used in a noisy environment, z. B. used a directional microphone in low-noise technology as a speech capsule. The earpiece is formed by a relatively large and powerful loudspeaker or an external electroacoustic transducer (e.g. earphones) that can be switched on (by means of a socket).

If an acoustic call display is undesirable, it can be switched off in favor of a vibrator or a flashing light signal transmitter.

Furthermore, it can be important for certain users (skiers, night watchmen, heart attack patients, foresters, mountaineers, etc.) that the device sends an automatic emergency call if no button on the device has been pressed for a long time. Correspondingly, a circuit can be provided which forwards an emergency call which is received. A special switch (or a special key combination) that generates an SOS call is also conceivable.

The hand-held radio telephone can be designed for operation with a telephone or identity card. In a variant of the hand-held radio telephone (cell phone or handset), not shown, for such operation with magnetic cards, the hand-held radio telephone (cell phone or handset) has a slot which runs parallel to a longitudinal narrow side of the telephone housing. The slot is at least as long as a conventional magnetic card and is open at one or both ends, ie it extends from one end of the telephone housing over a part of the telephone housing length corresponding to at least the usual magnetic card length or from one end to the other of the telephone housing. In the former case, a stop for the narrow card side is provided at the closed slot end.

A magnetic head (at least) for reading the magnetic strip of the card is arranged near the open slot end or one of the two open slot ends. A guide for the magnetic card edge is provided in the slot base, the

REPLACEMENT BLAπ (RULE 26) The slot depth is dimensioned so that the magnetic stripe of the card runs inside the slot to an extent sufficient for reading. To read the card, the longitudinal edge of the card, on which the magnetic strip is located, is inserted through the open slot end or one of the two open slot ends into the slot and pushed as far as it will go, or to the other end, the magnetic strip using the Magnetic head is read.

To prevent dust, splash water, etc. from entering the slot, e.g. a rubber lip or a brush border is attached along the slot. When the card is inserted, these flexible elements simply bend to the side and do not represent an obstacle. A particularly robust solution results from the fact that the card reader is arranged behind a flap or drawer which can be closed in a watertight manner. To call the card, open the flap or drawer and insert the card. If the hand-held radio telephone is of sufficient size, the flap or drawer can be designed such that the flap or drawer can be locked watertight again with the inserted card. In the case of particularly small devices, on the other hand, it is advantageous if the card does not have to be inserted completely. That the flap or drawer remains open when calling with a card. (As a rule, the risk of contamination and damage is the smallest during the telephone call.)

The variant described is also advantageous in the case of conventional hand-held radio telephones which are not designed according to patent claim 1.

A support or holder can be provided for holding the hand-held radio telephone, particularly in motor vehicles. The holder is preferably equipped with a tilting mechanism which, after pressing a release button, automatically from a locked rest position, in which the hand-held radio telephone, for. B. is approximately horizontal, pivots in an inclined position in which the hand-held radio telephone can be comfortably gripped. The tilting mechanism is particularly advantageous in the case of a shaft-like one

REPLACEMENT BLAπ (RULE 26) 97/03511 PCMB96 / Ü0663

17

Motor vehicle holder used holder, from which the cell phone is difficult to remove without tilt mechanism because of the shaft walls.

In a preferred embodiment, the holder is designed both for holding the hand-held radio telephone and for holding a pager. If the hand-held radio telephone is removed, the pager remains in the holder and can carry out various commands when called. The pager is expediently equipped with a control device which, for example, commands for switching on the auxiliary heating of the motor vehicle, the air conditioning system of the motor vehicle, checking or switching the car alarm system on or off, closing the windows and / or the sliding roof, the recording of the caller's name or the telephone number of the caller or short messages, u. Processed. The pager can either be called only from the hand-held radio telephone assigned to it or from any telephone.

The holder described with the pager can also be used for any other conventional handheld radio telephone instead of for the handheld radio telephone.

REPLACEMENT BLAπ (RULE 26)

Claims

claims

1. Handheld radio telephone with operating elements such as keyboard (2; 24, 25) and display field (3; 26) and a movable cover element (6; 22), which serves as protection for parts of the operating elements when the handheld radio telephone is not in use, characterized in that that the cover element (6; 22) can be closed watertight over the parts (3; 26) in need of protection.

2. Hand-held radio telephone according to claim 1, characterized in that the cover element (6; 22) can be secured in the closed position by a locking mechanism.

3. Handheld radio telephone according to claim 2, characterized in that the cover element is held in the closed position against the force of a tensioned opening mechanism, so that when the locking mechanism is unlocked, the cover element is automatically brought into the open position by the opening mechanism.

4. Hand-held radio telephone, in particular according to claim 1, with a shell-like housing, in the interior of which a printed circuit board is accommodated with electronic components, characterized in that, in order to increase the mechanical shock resistance, the printed circuit board is at least partially coated with the aid of a foam plastic Housing is potted.

5. Handheld radio telephone according to one of claims 1 to 4, characterized in that the circuit board is screwed to the housing.

REPLACEMENT BLAπ (RULE 26)

6. Hand-held radio telephone according to one of claims 1 to 5, characterized in that the cover element (6; 22) in the manner of a retractable and extendable slider can be pushed at least over the display panel (3; 26).

7. Hand-held radio telephone according to claim 1 or 2, characterized in that the cover element (39) is designed as a blind and can be moved around a rounded housing (40).

8. Hand-held radio telephone according to one of claims 1 to 7, characterized in that the cover element (6; 22; 39) is displaceable in the longitudinal direction of the housing.

9. Hand-held radio telephone according to one of claims 1 to 8, characterized in that the cover element (6; 22) carries an earphone (5; 27).

10. Hand-held radio telephone according to one of claims 1 to 9, characterized in that the cover element (22) is transparent at least in regions (29).

11. Hand-held radio telephone according to one of claims 1 to 10, characterized in that the cover element (22) is designed in the manner of a sleeve which is open on one side and which has an elastic sealing element (18) and tongue-like (16) along an open end face. or slot-like (17) guide elements.

REPLACEMENT BLAπ (RULE 26)

12. Hand-held radio telephone, in particular according to one of claims 1 to 11, with an interchangeably arranged power supply part (43) on a housing (42) of the hand-held radio telephone, which can be connected via electrical contacts to a circuit part of the hand-held radio telephone, characterized in that the electri - See contacts are protected from the outside by a sealing device when the power supply part (43) is attached to the housing (43) of the hand-held radio telephone.

13. Handheld radio telephone according to claim 12, characterized in that the Stromver¬ supply part (43) by a clamping device (45.1, 45.2) on the housing (42) can be fixed to ensure the water resistance by a suitable pressing force on the

Ensure sealing device.

14. Handheld radio telephone according to claim 13, characterized in that the clamping device (45, 1, 45, 2) comprises a screw or bayonet catch.

15. Hand-held radio telephone according to one of claims 12 to 14, characterized in that the power supply part (43) which is watertightly attached to the housing includes an air volume which gives the hand-held radio telephone sufficient buoyancy for swimming in the water.

16. Hand-held radio telephone according to one of claims 13 to 15, characterized in that the clamping device (45.1, 45.2) is arranged outside a region defined and closed off by the sealing device.

REPLACEMENT BLAπ (RULE 26)