Abstract: A SIM card containment assembly eliminates the locking mechanism of the conventional arrangement and simplifies construction to thereby minimize parts and allow for easy access to the SIM card. The structure includes a SIM connector electrically coupled to the device PCB and engageable with the SIM card, and a SIM card door releasably engageable with the apparatus housing. The SIM card door, in a closed position, engages the SIM card and maintains the SIM card in engagement with the SIM connector. The SIM connector or the device housing itself preferably includes alignment structure that contains the SIM card laterally and ensures that the SIM card is properly aligned in the SIM connector.

Abstract: A conductive first enclosure section 11 is molded through a primary molding process. At this time, a primary mold is provided so as to form openings 13 and 14 in the first enclosure section 11 for portions that needs insulation (non-conductivity). At a secondary molding process to make a non-conductive second enclosure section 12, a secondary mold is provided so as to cover the first enclosure section 11 and then non-conductive resin is filled thereinto. The openings 13 and 14 in the first enclosure section 11 are filled with the non-conductive resin, thus the rear cover 1 is formed.

Abstract: A shield including a cover and pins is inserted in a solder-free connection into an electronic substrate for shielding electronic components on the substrate in an electronic device. The shield has a conductive cover, preferably with an integrally formed roof and wall, which defines a cavity. The cavity is configured to receive an electronic component or components positioned therein. The shield also has a conductive mounting pins which extend from the cover. The cover and the pins are preferably formed as a single piece. The shield also preferably includes a conductive gasket connected in a groove in the cover between the cover and the electronic substrate. Methods of assembling the shield on an electronic substrate in forming an electronic package for an electronic device are also provided.

Abstract: A radio device equipped with a display panel 1 which contains a display section 2 provided with a plurality of electrode terminals formed thereon. A side of the display panel 1 may be provided with a protruding section 4. The case 5 is provided with a guide section 6 for insertion of the display section 2. The display section 2 is inserted and held via the guide section 6. The guide section 6 is provided with connection terminals 7 formed thereon for connection with the electrode terminals 3 of the display section 2. The display section 2 may be removed by pulling out the protruding section 4 or directly holding and pulling out the display panel 1. This configuration allows easy replacement of failed display sections alone and thus results in reduced maintenance costs.

Abstract: Separate electromechanical and electronic modules are detachably electrically interconnected to provide a telecommunication instrument, such as a cellular telephone, which can be mechanically redesigned to a variety of configurations without changing the basic electronic circuits of the instrument. The electronic module is enclosed within a canister providing RF shielding for electrical circuits in the electronic module. If desired, the electromechanical and electronic modules may be enclosed within a disposable cover that conveniently provides recycling of the instrument after a period of limited use.

Abstract: A conducting housing for use in a coaxial cable distribution system is of larger length than width and defines an RF signal path therein. A part of the RF signal path is the inner conductor of inner and outer approximately co-extensive conductors. The inner conductor except near its ends has only air separating it from the outer conductor. The outer conductor will usually be of a U-shape lying, in section, on three sides of the central conductor. The outer conductor may be structually combined with an insulating plate supporting the remainder of the RF circuit.

Abstract: A portable information terminal includes a body casing which incorporates a function unit for transmitting and receiving information and has a groove portion with a plane bottom, and a card casing which is reversibly and slidably attached in the plane-bottom groove portion of the body casing and has an operation unit. The plane-bottom groove portion of the body casing has a rectangular shape with side surfaces opposed to each other and a pair of guide grooves formed on the opposed surfaces thereof. The card casing has a rectangular shape substantially similar to that of the plane-bottom groove portion and has a pair of pins near the end portions of the opposed side surfaces. The card casing is attached to the body casing by inserting the pair of pins into the pair of guide grooves.

Abstract: A bridge is used to mount a heat generating electronic component such as an RF power amplifier to a heat sink plate or the like. The bridge is made of heat conductive material to assist in dissipating heat away from the power amplifier while providing an electromagnetic border between input and output sides of the amplifier.

Abstract: A radio installation kit for automobiles comprising a frame with rearward facing walls, mounting plates which snap onto the frame and mounting brackets which snap onto the plates. The plates and brackets may be assembled in a great variety of locations allowing for maximum vehicle application coverage. All of the components are constructed with out the need for expensive slide tooling.

Abstract: A multi-mode radiotelephone (10) includes at least one antenna (12) for transmitting and receiving RF signals within at least two frequency bands. The radiotelephone also includes a first receiver (30, 34) having an input coupled to the antenna for amplifying and down-converting RF signals within a first frequency band and a second receiver (30a, 34a) having an input coupled to the antenna for amplifying and down-converting RF signals within a second frequency band. The radiotelephone further includes a first transmitter (44, 46, 48) having an output coupled to the antenna for up-converting and amplifying RF signals within the first frequency band and a second transmitter (44a, 46a, 48a) having an output coupled to the antenna for up-converting and amplifying RF signals within the second frequency band.

Abstract: An electronic appliance housing is arranged by a cover with a locking groove, an operation portion with a locking portion fitted to this locking groove, and a housing to which the cover is attached. This cover is slidably mounted on the housing. Both the locking groove of the cover and a locking portion have portions inclined with respect to the cover, for instance, such a portion whose sectional shape is a parallelogram. The operation portion has a portion slid along a direction perpendicular to the sliding direction of the cover. With this sliding portion, the locking portion is slidably entered/derived into/from the locking groove. When the locking portion is fitted into the locking groove such that the cover is mounted on the housing, the cover is fixed so as not to be dropped out. The operation portion is attached to a portion of the housing, and has such a structure that this operation portion is moved downwardly by depressing the housing from the upper direction.

Abstract: The integrated shielding and mechanical support simultaneously addresses the problems of providing RF shielding for an electronic device such as a radio transceiver and providing a rigid mechanical assembly for the electronic device. Two conductive rails (120, 130) hold together multiple printed circuit boards (PCBs) (140, 160) having conductive layers (145, 165) to produce a four-sided shielding box (180) that protects certain electronic circuits on the PCBs from electromagnetic interference. An internal conductive shield (150) subdivides the inside of the shielding box to provide additional protection for sensitive circuitry. The shielding box inserts into an opening in a five-sided housing section (110) using guides (112, 114, 116, 118), which simplifies assembly of PCBs in the housing and facilitates automated assembly. A second housing section (190) attaches to the shielding box (180) once it is inserted into the five-sided housing section (110).

Abstract: A heatsink assembly (100) provides additional heat dissipation for a high-power integrated circuit package (102) contained within a communication product housing (130). There is an integral heatsink (104) protruding from the package. The heatsink frictionally mates with the first end (108) of a thermally conductive member (106). The second end (110) of the conductive member is magnetically-coupled to the rear surface (123) of a loudspeaker magnet (122). Tabs (111) extending away from the second end of the conductive member provide added mechanical support, preventing the second end from sliding against the rear surface of the magnet. Heat generated by the high-power device is transferred from the package heatsink, via the thermally conductive member, to the loudspeaker magnet such that heat is dissipated away from the package and toward the magnet.

Abstract: A bag phone comprises a bag (2) holding a cellular radio telephone handset (14), transceiver housing (22) and battery pack (26). To allow access to the battery pack (26) for re-charging, the handset (14), transceiver housing (22) and battery pack (26) are all carried in a holder (28) which can be taken out of and placed in the bag (2) as a unit. The holder (28) is a sheet of lightweight material which is configurable between a folded position in which it can be placed in and removed from the bag, and an unfolded configuration which allows access to the battery for re-charging.

Abstract: An electromagnetic shield is incorporated into a radiotelephone. The radiotelephone includes a printed circuit board having a ground trace extending around an electrical circuit formed on the printed circuit board. The electromagnetic shield is disposed adjacent the printed circuit board for isolating the electrical circuit thereon. Forming a part of the electromagnetic shield is a face, a side wall, and a series of spaced apart spring contacts that extend from the side wall for electrical contact with the ground trace on the printed circuit board. Disposed over the shield is a housing structure that engages the shield and urges the shield against the printed circuit board such that the spring contacts thereof engage and make electrical contact with the ground trace of the printed circuit board.

Abstract: A belt clip (100) attaches to a communication device to be worn by a user. The belt clip (100) includes a base (104) and a flexible latch (106). The base (104) is comprised of a pair of rails (108) that has a pair of skies (110). The pair of rails (108) attach to a battery housing (116) via a pair of slots (120). The belt clip (100) is prevented from moving due to the pair of stop bars (110) being pressed against a pair of posts (124) and secondarily, if the posts are damaged, the stop tabs (110) will press against a pair of casting stops (126). The belt clip is designed to fail or detach before permanently damaging the battery housing. If the belt clip (100) is detached due to extreme pulling, it may be replaced back into the still usable battery housing (116) without the use of a tool.

Abstract: A housing is provided for a radio device, such as a portable cellular telephone, in a housing arrangement which includes an integral electromagnetic shield. A thin conductive film is applied to an interior or exterior surface of one or more shell-type housing parts. This thin film may be applied during an injection molding process to form the shell-type parts. The shell-type parts are shaped to define a cavity for encasing electronic components of the radio device, and for securably receiving an associated circuit board. The thin film is disposed to extend over a supporting edge of the corresponding housing part so that circuit board grounding surfaces are in low-resistance contact with the shielding film. The film thereby provides the housing with an integrated shielding function against electromagnetic radiation.

Abstract: A shield can for radio frequency (RF) shielding of electronic circuitry mounted on or embedded in the surface of an insulating substrate such as a printed circuit board (PCB). The design of the shield can allows it to conform to variations in the surface of the PCB. The shield can, which is usually formed of metal, includes a top and a plurality of side walls dimensioned to completely cover the electronic circuity when the shield can is placed over the circuitry. According to the present invention, any of the sides of the shield can may be made to conform to the surface of the PCB (and to effectively contact a ground trace on the PCB) by providing a plurality of vertical slots in the side. The slotted side would then have a series of metal teeth each of which can be displaced angularly to the extent required to conform to the PCB when a modest force is applied to the top of the shield can.

Abstract: Device and method of protecting a satellite from undesired electrical disturbances without significantly increasing the satellite's weight. The device includes two faraday cage structures around the electronic units of the satellite. The two structures are electrically connected via shielded wires to create one continuous faraday cage. Signals from components located outside the faraday cage to the electronic units are made through filter assemblies. The filter assemblies electronically filter undesired signals before routing desired signals to their destination.

Abstract: A radiotelephone/pager unit (100) includes a housing enclosing (102, 104) radiotelephone circuitry (224) coupled to a radiotelephone antenna (108) operable at radiotelephone frequencies and pager circuitry (218) coupled to a pager antenna (212) operable at pager frequencies. The radiotelephone antenna (108) is located outside the housing (102, 104) in a conventional manner. The pager antenna (212) is located outside the housing (102, 104) and concealed under or integrally formed with a hand grip (122), a display lens (402), an escutcheon (502), a keypad (110), or a cap (601) such that the pager antenna's presence is unnoticeable to a user. The pager antenna (212) forms a loop antenna substantially surrounding a user interface element such as a display (112), a keypad (110), an earpiece (114) or volume control buttons (118, 120) to minimize space.

Abstract: A selective call receiver has a main body a protective cover. The main body has a display portion and a plurality of keys at a main surface thereof and the cover is rotatably connected with the main body to cover at least the main surface of the main body. The keys of the main body includes a predetermined key protruding from the main surface. At a position corresponding to the predetermined key, the cover has a hole which is larger than a cross section of the predetermined key.

Abstract: An intercooled electronic device, includes a thermally conductive chassis (110), a substrate (120) mounted onto the chassis (110), a housing (104) formed around the chassis (110), and a cooling fan (130) mounted internally within the housing (104). The substrate (120) carries electrical circuitry including at least one heat-generating component (122) which is thermally coupled to the chassis (110). The cooling fan (130) is oriented to direct air across the chassis (110).

Abstract: An electronic device mounting structure, which allows threaded engagement with a standardized male screw compliant with the JIS, DIN or the like without having to perform tapping on a plate material, includes an engagement hole having first and second cutouts formed in a peripheral edge section thereof, wherein the peripheral edge section of the engagement hole is deformed in the plate thickness direction such that there is a positional deviation from a first peripheral edge end section bordering on the first cutout toward a second peripheral edge section bordering on the second cutout by approximately one half of the pitch of a standardized male screw compliant with the JIS and a further positional deviation from a third peripheral edge end section bordering on the second cutout toward a fourth peripheral edge end section bordering on the first cutout by approximately one half of the pitch, with the result that there is a positional deviation corresponding to one pitch of the male screw between the first and

Abstract: A rapid assembly electronic device includes a housing and a chassis which snap together and are movable relative to one another between a closed position and a position in which a battery compartment on the chassis is accessible from the outside. The chassis is separable from the housing by the use of a pointed tool. A resilient clip is received in a receptacle on the housing, the clip being held in place by resilient engagement with the housing in three ways. The electronic device is operated from the exterior by a resilient element mounted in an opening in the housing and without a physical connection between the resilient element and any parts which are movable with the chassis.

Abstract: A selective call receiver (110) and a receptacle (150) has in combination (100) a breakaway lock (120, 154), a non-breakaway hinge (124, 126), a track (116) and a slidably coupling having the breakaway lock (120, 154) and the non-breakaway hinge (124, 126) coupled with the track (116) for removing and replacing the selective call receiver (110). The breakaway lock (120, 154) has a tab (154) and a groove (120) for disengaging the selective call receiver (110) from the receptacle (150) at the breakaway lock (120, 154). The non-breakaway hinge (124, 126) forms a rotatable coupling for pivoting the selective call receiver (110). The non-breakaway hinge (124, 126) has a rail (126) and a geometric groove (124) terminating the track (116).

Abstract: A portable information terminal includes a body casing which incorporates a function unit for transmitting and receiving information and has a groove portion with a plane bottom, and a card casing which is reversibly and slidably attached in the plane-bottom groove portion of the body casing and has an operation unit. The plane-bottom groove portion of the body casing has a rectangular shape with side surfaces opposed to each other and a pair of guide grooves are formed on the opposed surfaces thereof. The card casing has a rectangular shape substantially similar to that of the plane-bottom groove portion and has a pair of pins near the end portions of the opposed side surfaces. The card casing is attached to the body casing by inserting the pair of pins into the pair of guide grooves.

Abstract: A radio pager has a casing and a cover capable of covering the casing. A hinge structure for connecting the casing and cover has a fulcrum portion included in the casing, and a flexible bearing portion included in the cover and capable of mating with the fulcrum portion. A locking mechanism for locking the cover to the casing has a recess formed in the casing, and a flexible tongue included in the cover and capable of mating with the recess. The cover protects a display portion of the casing from damage and can be easily mounted and dismounted from the casing.

Abstract: Cellular telephone having a shield for protecting the user from electromagnetic radiation. The shield is mounted to the housing of the telephone and can be positioned between the antenna and the head of the person using the telephone to protect the person from radiation emitted by the antenna. In one presently preferred embodiment, the shield is fabricated of a plastic material having carbon fibers embedded therein for absorbing and dispersing electromagnetic radiation.

Abstract: There is disclosed an electronic equipment device. A pair of first and second printed boards are superposed with an electrically-conductive shield frame interposed therebetween in such a manner that those faces of the two printed boards having associated electronic parts mounted thereon are faced to each other. The shield frame has an integral peripheral wall extending over an entire peripheral edge thereof. This peripheral wall surrounds the electronic parts mounted on each of the two printed boards to achieve a shielding effect. Right and left sides of the stack of the two printed boards and the shield frame interposed therebetween are clamped respectively by a pair of resilient clamping members of a U-shaped cross-section to thereby provide a unitary assembly. These resilient clamping members cause earth portions of the first and second printed boards to be electrically connected to the shield frame.

Abstract: A shielding assembly (102) for shielding an electronic circuit (108) disposed on a substrate (107) includes traces (118) and a shield (200). The traces (118) are disposed on the substrate (107) about the electronic circuit (108). The shield (200) includes leads (214, 218) for attachment to the traces (118). The shield (200) is attached to the traces (118) such that some of the leads (218), which are staggered, attach to the traces (118) in a nonconsecutive manner. An additional shield (201) including alternately staggered leads (222) can be adjacently attached to the previously attached shield (200). This is accomplished by attaching the alternately staggered leads (222) of the additional shield (201) to those traces that are between the traces attached to the previously attached shield (200).

Abstract: In a portable electronic apparatus having a casing and a battery pack removably mounted to a mounting portion included in the casing, a movable hook is positioned in the mounting portion and resiliently movable into or out of the mounting portion when a release button mounted on the casing is operated. A first recess is formed in the battery pack and engageable with the movable hook when the battery pack is mounted to the mounting portion. A second recess adjoins the first recess, but is positioned closer to the mounting portion than the first recess. The second recess is engageable with the movable hook when the battery pack moves away from the mounting portion after the first recess has been released from the movable hook.

Abstract: A latch system for a housing includes front and rear housing sections (204, 202) having a common side periphery (212) when assembled. The housing sections (204, 202) include wall segments (208, 206) projecting therefrom. Each wall segment (208, 206) has a locking side (214) adjacent and parallel to the common side periphery (212) and has a recess (402, 210) therein for mating with an elastomeric interlocking band (100). The elastomeric interlocking band (100) includes teeth (102, 103) projecting therefrom for engaging with the recesses (402, 210) in the wall segments (208, 206). To latch together the front and rear housing sections (204, 202) the elastomeric interlocking band (100) is slidably assembled onto the wall segments (208, 206) of a first housing section (204, 202) until the teeth (102, 103) engage with the recesses (402, 210) therein.

Abstract: A bracing system protects and secures the internal components of a mobile communication system. The bracing system includes an upper housing comprised of a shock resistant material. The upper housing includes a monitor cavity, elevated portions surrounding the monitor cavity and formed in the upper housing, and elastomer sections disposed on the elevated portions. In addition, the upper housing includes a breakage resistant transparent material placed on the elastomer sections and in conformity with the monitor cavity, a display monitor being protected by the breakage resistant material, and a shock absorbing material disposed around the peripheries of the breakage resistant transparent material and the display monitor. The shock absorbing material is mounted to at least one of the breakage resistant transparent material and the display monitor.

Abstract: In a detachable electronic device with a device body which can be detached from a stationary portion and a control unit which can be detached from the device body, the device body is prevented from being released from the stationary portion when the control unit is detached from the device body.

Abstract: An electronic device using an operation battery and a memory backup battery includes a device body and a memory backup battery removal preventing mechanism. The device body includes a first accommodating portion for accommodating therein the operation battery and a second accommodating portion for accommodating therein the memory backup battery. The preventing mechanism prevents the memory backup battery accommodated in the second accommodating portion from being removed from the second accommodating portion based on whether or not the operation battery is accommodated in the first accommodating portion.

Abstract: An electronic device coupling apparatus is used to couple two electronic devices through a hinge. A first electronic device (221) is disposed within the main housing of a radiotelephone (101). The second electronic device (301) is disposed within a movable element (103) of the radiotelephone (101). The coupling apparatus uses a piece of flex (215) which is torsionally twisted upon the opening of the movable element (103) of the radiotelephone (101). Additionally, the flex (215) is coupled to the electronic devices (221, 301) using an elastomeric connector (217).

Abstract: First and second shielding portions (110, 112) formed of electroless plated plastic enclose a radio frequency (RF) board (108). Bosses (148) extend from inner surfaces (130, 142) of the first and second shielding portions (110, 112) to make contact with compressible ground clip members (126) located on the RF board (108).

Abstract: A computer device for receiving and utilizing a radio card. The radio transceiver is self contained inside the radio card and has antenna contacts disposed on the radio card on one end and an electrical interface on the other. The computer device receives the radio card such that it engages the electrical interface. The computer device additionally has and cap which covers the opening into which the radio has been inserted. Antenna contacts are disposed on the cap to engage the antenna contacts on the radio card. At least one antenna is operably connected to the radio card through the cap. A band is used to attach the cap to the housing of the computer device. The antenna or antennas are embedded in the cap, in the band, or embedded in or attached to the housing of the computer device. Positioning two similar antennas in different position creates an antenna diversity scheme. Shielding can be added to the cap to help reduce the escape of electronic noise.

Abstract: A remote control unit for an air conditioner having a controller configured to process multiple temperature inputs, to provide a cycle of operation to provide comfort during sleeping, to provide an automatic cycle of operation wherein a burst of cooling air is provided on demand and/or which is configured to receive and respond to remote signals having different protocols. The remote control unit has a housing with a contoured rib that extends between two support pads so as to provide strength, rigidity and stability to the housing.

Abstract: An electronic apparatus includes first and second circuitry blocks mounted on opposite surfaces of a double-sided circuit board. A first shield case is attached to the circuit board so that the first shield case covers the first circuitry block. A second circuitry block is attached to the circuit board so that the second shield case covers the second circuitry block. A conductive component contacts the first and second shield cases and is engaged with the edge of the circuit board for enabling the circuit board to be electrically connected to the first and second shield cases.

Abstract: An electrical module (125) is for mounting upon a circuit board (104). During circuit assembly, the electrical module (125) is placed upon a breakaway portion (117) of the circuit board (104) and a bracket assembly (103) is mounted to the circuit board (104) so as to position the electrical module (125). At the conclusion of circuit assembly, final assembly is initiated and the breakaway portion (117) is removed and the circuit board (104) is mounted into a housing (105). Preferably, the electrical module (125) is in direct contact with the housing (105) so as to maximize heat transfer.

Abstract: An antenna clip includes a U-shaped front end that slides into a slot on an edge of a printed circuit board (PCB). The PCB holds the clip rigidly in both a lateral direction and in a front to back parallel orientation with the PCB providing a reliable electrical contact between the antenna and the phone electrical circuitry. An antenna switching circuit switches between an internally connected antenna and an external system detachably coupled to an external connector. The antenna circuit has a wire length of .lambda./4 between the phone circuit and the antenna and a wire length of N.lambda./2 between the phone circuitry and the external system. The antenna then appears as an open circuit when coupled to ground through a diode. Alternatively, the external connector appears as an open circuit when disconnected from the external system.

Abstract: An athletic shoe (or other article of clothing) has a pocket formed therein, and an interchangeable unitary assembly is slidably received within the pocket and is retained therein by means of a flap carried by the shoe. The interchangeable unitary assembly preferably comprises a molded plastic card having a battery, microchip, speaker and on/off switch encapsulated therein and electrically connected together. A push (or "press") button is carried by the shoe and overlays the switch when the card is received in the pocket. The push button may be pushed to close the switch, so as to energize the microchip from the battery and generate an audible signal, such as a tune or message.

Abstract: A radio transceiver having an integrated transmitter and receiver for transmitting and receiving microwaves or higher frequency electromagnetic waves is one of a series of device products corresponding to different transmission output power capacities. In this invented series of device products, a radio transceiver which is of a minimum size to meet its transmission output power requirement without an amplifier is composed of entirely standardized basic components, a transmission module, a reception module, and a transmission and reception shared circuit which are housed in a heat radiating housing case irrespective of different transmission output power requirements. Corresponding to the transmission output power requirement, a power amplifier is added to the basic components.

Abstract: A radio apparatus including a circuit board and a housing in which the circuit board is mounted. An antenna portion, a receiving portion, and a transmitting portion are disposed on the circuit board. The transmitting portion includes a carrier-wave oscillator. The receiving portion includes a high-frequency section, a first intermediate frequency section, a second intermediate frequency section, and a first local oscillator. The high-frequency section, the first intermediate frequency section, the second intermediate frequency section, and the transmitting portion are disposed on the circuit board so as to surround the first local oscillator and the carrier-wave oscillator. The high-frequency section, the first intermediate frequency section, and the second intermediate frequency section each include a filter having an input terminal and an output terminal, and an amplifier having an input terminal and an output terminal.

Abstract: A radio (100) which includes a plurality of printed circuit boards (101) which are positioned in a planar arrangement so to provide a substantially fiat structure. The printed circuit boards (101) are connected using flexible conductors (105) which mechanically and electrically couple the printed boards (101) and provide a flexible link to allow the printed circuit boards (101) to be manipulated into various configurations. A flexible radio housing (151) is used to encapsulate the printed circuit boards (101) and flexible conductors (105) allowing radio (100) to be impacted and/or easily manipulated without crushing the contents. The radio (100) may be worn and easily concealed on the body without risk of breakage.

Abstract: This invention is directed to a PCMCIA Type II memory card holder assembly for a spread spectrum radio communication card that provides radio frequency interference shielding, electrostatic discharge resistance and heat dissipation. The card holder assembly consists of a multilayer circuit board and a card holder. The multilayer circuit board has a ground plane disposed between a plurality of analog circuit layers and a plurality of digital circuit layers. The ground plane is connected by through vias to ground traces on the surfaces of the circuit board. The card holder consists of a card holder frame in which the memory card is slidably and rotatably mounted so that the ground traces continuously contact the frame, and two outer cover plates which are adhered to the opposing surfaces of the card holder frame.

Abstract: An EMI shielded keypad (10) or switch for a radiotelephone (50) has a non-conductive cover (12) attached to a printed circuit board (PCB) (14). The PCB (14) has a ground pad (20) and a plurality of metal traces (26) on a first surface (16) that attaches to the cover (12). The cover (12) is made of a flexible, preferably clear material, such as mylar and has a dimple (28) centered over the ground pad (20). A bubble (30) is centered over the plurality of conductive traces (26). A conductive coating (32) is selectively applied to the mating surface (34) of the cover (12), so that the conductive coating (32) in the bubble (30) is electrically isolated. By pressing on the bubble (30) electrically contact is established between the plurality of traces (26), thus the bubble and the traces (26) define a switch.

Abstract: In an electronic device in which a control unit is detachable from an equipment body, the control unit is engaged and detachably secured to the equipment body by a locking member and a temporary retaining member. A lock release unit causes the locking member to disengage the control unit. When the locking member disengages the control unit, the temporary retaining member retains the control unit and causes the control unit to protrude from the front of the equipment body. Thus, the control unit is temporarily retained by the temporary retaining member in the protruding position and is not allowed to fall off the equipment body onto the ground or floor. In addition, since the operating member is moved to a position where it protrudes from the front of the equipment body, the control unit is easy to remove by hand.

Abstract: In an arrangement in which the earphone cord 16 of earphones 15 is connected to a remote control unit 11 and the remote control cord 12 of this remote control unit 11 is detachably connected to a portable audio unit 10 by means of a plug 14, a battery 19 that drives the elements inside the remote control unit 11 is embodied in a plug unit 13 having the plug 14. Specifically, a battery accommodation recess 23 is formed in the plug unit 13, and a battery holder 26 into which the battery 19 is fitted is detachably attached to this battery accommodation recess 23. As a result, with the plug 14 inserted into the portable audio unit 10, the portable audio unit 10 and the plug unit 13 are an integral unit and do not have the weight of the remote control unit 11 if the portable audio unit 10 is kept in a pocket or handbag. The remote control unit 11 becomes lighter and smaller to the extent of the battery 19.