Abstract: A digital circuit interrupter containing radio frequency sensitive electronic equipment employs an electrically-insulative enclosure having a conductive coating on the exterior surface. The enclosure is inserted within the circuit interrupter enclosure during automated assembly of the circuit interrupter components.

Abstract: An adapter for connecting an electrical load which is mobile, such as the electrical system of a pleasure craft, to a stationary power source, such as the electrical pedestal at a marina. In its preferred embodiment, the adapter serves to connect a higher voltage load (such as a 240 volt electrical load of a pleasure craft) to a pair of conventional 120 volt sources. Input cables include a pair of connectors for independent connection to sources on the pedestal. Isolation means within the adapter serves to isolate the input connectors from each other during the connection operation such that a user holding one connector while connecting the other will not receive an electrical shock. Sensing means within the adapter determines that the sources are in the proper relationship to sum to the level required by the mobile load. When the sensing means determines that the sources are connected and in the proper relationship, contacts are closed connecting the summed inputs to the output for driving the load.

Abstract: A control device for a parking brake for a vehicle includes an electric motor which rotates a crank to activate the parking brake with the provision of a disk having two concentric conductive tracks which are interrupted by an insulating space; the disk is rotated by the drive shaft to control the supply of current for driving the electric motor.

Abstract: A motorcycle has an article storage box equipped with a lid member which is locked and unlocked and with a fuel tank having a gasoline injection port which is closed or opened by a lid member. The locking and unlocking of the lid members of the storage box and the fuel tank injection port are controlled by an electric circuit system. The electric circuit system includes a battery, a main switch unit operatively connected to the battery, a solenoid switch connected to the main switch unit for carrying out an on-off operation to the lid locking and unlocking mechanism for the fuel tank injection port lid, and a solenoid switch connected to the main switch unit for carrying out an on-off operation to the lid locking and unlocking mechanism for the storage box.

Abstract: An electrostatic discharge noise suppression method and system is disclosed for electronic devices, particularly those connected to data buses. Electrostatic discharge protection is provided by breaking high-frequency ground loops by inserting common mode inductors where they can be most effective-in the DC power supplies themselves, in the DC power connections, or just behind the DC connector in the electronic devices. Saturation of the cores of the common mode inductors is prevented in a preferred way by equalizing supply and return currents in the common mode inductors and by preventing DC ground currents from flowing in a chassis between the power supply and the electronic device.

Abstract: Input current from the automobile lighting circuitry is conducted to movable poles on a first relay. Normally open contacts in the first relay are connected through output conductors to corresponding lighting circuits on the boat trailer. The first relay contacts close when operating voltage is applied to the first relay coil via a normally closed contact in a second relay. When a float switch on the trailer enters water, it closes, thereby actuating a transistor which, in turn, actuates the second relay. Upon actuation, the normally closed second relay contact opens, thereby deactivating the first relay and arresting current flow to the trailer. The transistor is maintained in an "ON" state for a period of time after the trailer emerges from water by current from a capacitor. The capacitor receives a charge via the second relay upon application of the automobile brake pedal only when the transistor is in the "ON" state.

Abstract: A mobile vehicular apparatus for moving an operator around a three-dimensional aerial work location includes a mobile vehicle having a vehicle body, a boom upwardly extensibly and downwardly collapsibly mounted on the vehicle body, a platform mounted on a distal end of the boom, and a manipulator mounted on the distal end of the boom in electrically insulated relation to the platform. The platform and the manipulator are electrically insulated from each other, and hydraulically operated generators are disposed respectively on the platform and the manipulator for energizing respectively electric systems mounted thereon. The electric systems on the platform and the manipulator are interconnected by an optical fiber cable.

Abstract: A gasoline powered boat safety ignition system has a start timer that requires the engine room blowers to operate for a time prior to allowing engine start up. It has a second timer sequence that permits a hot or warm start shortly after the engine has been shut down without as much of a delay for blower operation as for a cold start. Also, the system has a timer that cyclically turns the blowers on for short periods while the engine is operating and has a switch for overriding the safety system in case of an emergency.

Abstract: A solar battery system for a vehicle comprises a solar battery mounted on a body of the vehicle, a load connector for connecting selectively at least one of electric equipments provided in the vehicle with the solar battery so as to apply an output of the solar battery to the electric equipment connected thereby with the solar battery, a battery output checker for detecting the magnitude of the output of the solar battery, and a controller operative to select in response to the magnitude of the output of the solar battery detected by the battery output checker one or more of the electric equipments provided in the vehicle, which operate with power consumption corresponding appropriately to the output of the solar battery, as one or more electric equipments to be connected by the load connector with the solar battery.

Abstract: A voltage maintenance system is provided for an engine-driven vehicle having a primary battery, a starter that is energized by the primary battery, an ignition switch for selectively and momentarily activating the starter to start the engine and one or more electrical accessories that are electrically connected to and energized by the primary battery during normal operation of the vehicle. The voltage maintenance system includes a secondary battery. The system senses activation and subsequent de-activation of the starter each time the engine is started. A switching circuit is provided for electrically connecting the secondary battery to the electrical accessories and electrically isolating the primary battery from the electrical accessories such that the secondary battery energizes the electrical accessories each time activation of the starter is sensed.

Abstract: Extraneous electric and magnetic fields, which may be public health risks associated with electric power transmission, are avoided by using an improved power transmission cable and wiring arrangement that uses coaxial transmission lines configured so that the return current flows in the outer conductor. A cable structure is taught that both provides the desired shielding and maintains protection against lightning strikes. The coaxial transmission lines eliminate radiation of 50-60 Hz electromagnetic waves.

Abstract: A multi-unit railway freight car of which each unit defines a container well for receiving cargo containers, and including a permanently installed power distribution cable arrangement, for receiving power from a generator carried in a container well and for providing power to containers carried in other container wells and container-carrying positions of the car units. Cables and terminal devices are located in positions largely protected from mechanical damage, and circuit breakers are associated with the cables to protect the cables and the generator from overloads.

Abstract: A trailer lamp controller for use in connecting electrical circuits of turn and brake lamps of a towing vehicle to electrical circuits of turn and brake lamps of a towed vehicle, the turn and brake lamps of the towed vehicle being actuated in response to the sensing by the controller of current or voltage present when select towing vehicle turn and brake lamps are actuated.

Abstract: A ground-free device for removing static charges from semi-conductive or conductive bodies. The device includes a storage capacitor, a conductive contact connected to the storage capacitor, and an air capacitor connected to the storage capacitor, in which a voltage below the breakdown voltage of the air is imposed on the air capacitor, e.g., by an RC-controlled transistor oscillator circuit. The device provides high efficiency removal of static charge, e.g., from the metallic bodies of cars and aircraft.

Abstract: A six-phase power line configuration reduces the measured intensity of electric and magnetic fields that are associated with transmitting AC electric power. An open-wire configuration is taught that is compatible with transmission on power line right-of-ways, and that can be made by converting existing three-phase dual circuit power lines.

Abstract: A dual voltage power supply is disclosed for vehicles equipped with a DC generator, a single storage battery, a low voltage load circuit including the storage battery, and a high voltage load circuit including load devices designed to be powered by voltages higher than the battery voltage. At times when higher voltage power is required a low voltage regulator that includes a high current semiconductor switch converts power at the generator output voltage to power at a lower voltage for charging the battery and supplying the low voltage load circuit. There is a single voltage mode of operation when higher voltage power is not required in which the alternator is regulated to supply power at the voltage required by the low voltage load circuit and the high current semiconductor switch is held in its closed state to directly connect the generator output with the low voltage load circuit.

Abstract: A trailer hitch alarm system having a double safety switch for a ball and socket coupling in combination with an alarm system to provide an alarm signal indication that the socket has become loose from the ball or that the ball has become loose from the towing vehicle frame.

Abstract: An automobile theft alarm apparatus for detecting the variation of the inclination angle of the automobile includes: a sensor of a bridge configuration mounted in the automobile for sensing the angle of inclination of the automobile; a differential amplifier for amplifying the output of the sensor; an offset compensating circuit which produces a reference voltage for the differential amplifier by comparing the output of the differential amplifier with a constant value and by then integrating the differential output; an alarm device for issuing an alarm when the output of the differential amplifier exceeds a predetermined value; and a switching device for increasing a time constant for making the total integration time constant for the offset compensating circuit larger than the time constant of the integrating elements thereof by intermittently supplying the output of the differential amplifier to the offset compensating circuit.

Abstract: A hand brake operated control device of a car includes an electrical control circuit having a normal-open switch positioned under a rear cam portion of a hand brake lever, a normal-close switch formed in a front portion of the hand brake lever to be operatively depressed by a push button of the hand brake lever, and an electromagnetic switch which is powered for protruding a core latch outwardly to retard a depression of an accelerator pedal of the car, whereby upon an upwardly pulling of the hand brake lever for braking the car, the normal-open switch will be closed by the rear cam portion of the hand brake lever to close the electrical control circuit to actuate the electromagnetic switch to protrude the core latch outwardly for retarding a depression of the accelerator pedal for preventing the driving of a hand braked car for protecting the car; and upon a depression of the push button of the hand brake lever, the normal-close switch will be opened as being depressed by the push button to thereby open the

Abstract: A vehicle stop detecting apparatus including a detecting device for detecting a parking brake inoperative condition in a vehicle, and a signal generating device for generating a vehicle stop signal when a parking brake operative condition is generated after detection of the parking brake inoperative condition by the detecting device. Accordingly, in the case where a wiring is not properly connected, causing that the parking brake lever is in a position corresponding to the parking brake inoperative condition, the generation of the vehicle stop signal can be prevented. Further, a vehicle stop condition can be reliably determined with a simple construction.

Abstract: A self-powered back-up alarm for mounting to the wheel hub of a heavy truck or like vehicle. The alarm includes a housing adapted to be mounted to a vehicle wheel hub. Inside the housing is a magnetized stator that is held stable by a counterweight mounted for free rotation to a spindle in the housing. Also mounted in the housing is a power supply including a coil positioned adjacent the stator in the housing and attached thereto so that it rotates about the stator when the wheel hub turns. A battery stores the energy developed across the coil when the wheel hub rotates. Also mounted inside the housing are sensors located adjacent the stator that similarly rotate with the wheel hub. The sensors, in combination with an associated detect circuit, produce a reverse motion signal whenever the vehicle backs up. An audio alarm, located in the housing, is actuated by the reverse motion signal and emits an audible warning whenever the vehicle backs up.

Abstract: An electric power supply control device for a vehicle comprises a lock actuator for driving actuators of the vehicle and an operation switch for outputting an operation instruction signal to the lock actuator. A circuit for vehicle running system for actuating an engine of the vehicle and a steering lock circuit for actuating the steering lock actuator in a locking direction are connected, exclusively with each other, to a power supply circuit. Wireless communication is conducted between a driver's transceiver and the vehicle when the vehicle engine is stopped and the power supply circuit therefor remains on, to automatically disconnect the power supply circuit.

Abstract: A burglarproof device includes an accessory switch detection circuit for detecting ON/OFF states of an accessory switch provided in a vehicle. An accessory switch detection signal is sent to an alarm generation circuit. The alarm generation circuit generates an alarm signal when the accessory switch is in an OFF state. This alarm signal alarms that a detachable electronic equipment adapted to be mounted in vehicles which has been mounted in a vehicle is actually attached to the vehicle. This alarm informs a driver that he forgets detachment of the electronic equipment adapted to be mounted in vehicles, thus preventing burglarly.

Abstract: A power supply unit including batteries to energize a plurality of circuits hich have differing voltage requirements and fluctuating power demands. The power supply unit includes a battery monitoring circuit and a timer circuit. The timer circuit controls the intermittent interruption of current from the batteries to the utility circuits and the battery monitoring circuit tests the battery during the interruptions.

Abstract: Potentially harmful electromagnetic radiation associated with high voltage power transmission lines is reduced or minimized by splitting the current delivered to a load between at least three conductors, and by maintaining a specific spatial relationship between the respective conductors. Single phase transmission at reduced radiation may occur using three or four conductors spatially positioned, as viewed in a cross sectional plane, in a horizontal line or a rectangular array, respectively. Three phase transmission at reduced radiation may occur using five or six conductors spatially positioned in the corners of a rectangular array, with one conductor in the center, or a hexagonal array, respectively.

Abstract: In a battery powered vehicle such as an forklift truck, control data is stored in a memory (39) by an operation of the keys (11a, 11b, 11c, 11d, 11e) on a control panel (10) mounted at the operation seat, and a part of the control data is selected by a control circuit (30) and transmitted to a travelling control circuit. The travelling control circuit controls a travelling motor (101) with the characteristics decided by the selected data and the selected control data is indicated on a display panel (12). A plurality of data used for maintenance administration, such as a cumulative travelling distance or cumulative operating hours, are stored in a memory and one of the data for maintenance administration is arbitrarily indicated on the display panel (12) and converted to meet the specified indication specification through the control circuit (30) by operation of the keys (11e) on said control panel (10).

Abstract: A magnetic shield which comprises: a plurality of metallic cylinders connected to each other in the axial direction thereof, each of the plurality of cylinders having at one end thereof an engaging section for receiving an end of an adjacent metallic cylinder to be connected thereto; and a film of a composite oxide superconducting material containing a Cu.sub.x O.sub.y -radical, formed on the entire inner surface of each of the plurality of cylinders, including the inner surface of the engaging section thereof. The above-mentioned magnetic shield can easily be scaled up and has a high magnetic shielding effect.

Abstract: A method and apparatus for controlling application of electrical power from a selected one of a first and a second source of electrical power to a first and a second energy consuming device is disclosed and comprises a first and second switching device connected between the first and second sources of electrical power and the first and second energy consuming devices to control which energy consuming device is energized and in what manner it is energized from either the first or second source of electrical power. A third switching device is connected to the first and second switching devices to control the position of the first and second switching devices. A fourth switching device is connected to the first and third switching devices to control the position of the first switching device through the third switching device.

Abstract: A waterproofing device for an outboard engine control circuit having a hydraulic pump for lifting and lowering a propeller from and into the water, a motor for driving the hydraulic pump, and a control circuit for controlling the motor, comprising waterproof relays in which terminal strips are provided by insert molding on the casing of a relay for controlling the motor, leads of the relay are inserted into the slots of the terminal strips to electrically connect the leads to the terminal strips, and a waterproof circuit breaker having a waterproof cover provided thereon; a snap-up cap provided on top of the waterproof cover, being normally recessed, and when the circuit breaker is opened, snapped up by the action of the actuator of the breaker.

Abstract: A fuel cut-off anti-theft device for a vehicle having a fuel control valve (1) for mounting in a vehicle fuel line (2), and a control device for operating the valve (1) including a local control device (10) formed by an electronic circuit (15) mounted to the valve body and a remote keypad (12) through which the user inputs a coded sequence of input signals to operate the valve (1). The electronic circuit (15) and the body of the valve are encapsulated in an epoxy resin compound to prevent tampering with the valve body and/or circuit (15).

Abstract: The ignition switch for a vehicle such as a lawn and garden tractor is connected directly to a printed circuit board which also includes interlock systems components. The circuit board with the switch and other components is wave soldered in an automated process to make good electrical connections for reduced voltage drops, thereby reducing the number of relays required. Wiring harnesses are also soldered directly to the board during the soldering step. In the preferred embodiment, the ignition switch is fixed to the board and supports the board from the console of the vehicle. However, if the switch or another component on the circuit board needs to be remotely located with respect to the remainder of the board, the switch or component is mounted on a break-away section of the board, and the wires connecting the board sections are soldered with the remainder of the components during the automated process.

Abstract: A system for annealing a vessel (14) in situ by heating the vessel (14) to a defined temperature, composed of: an electrically operated heater assembly (10) insertable into the vessel (14) for heating the vessel (14) to the defined temperature; temperature monitoring components positioned relative to the heater assembly (10) for monitoring the temperature of the vessel (14); a controllable electric power supply unit (32-60) for supplying electric power required by the heater assembly (10); a control unit (80-86) for controlling the power supplied by the power supply unit (32-60); a first vehicle (2) containing the power supply unit (32-60); a second vehicle (4) containing the control unit (80-86); power conductors (18,22) connectable between the power supply unit (32-60) and the heater unit (10) for delivering the power supplied by the power supply unit (32-60) to the heater assembly (10); signal conductors (20,24) connectable between the temperature monitoring components and the control unit (80-86) for deli

Abstract: An acceleration pickup, especially for release of occupant protecting devices in power vehicles in the event of an accident comprises a housing, a spring element, a seismic mass cooperating with the spring element, a movable contact, and a magnetic system formed so that the spring element is deflectable by the magnetic system in a rest position of the acceleration pickup independently of an outer acceleration and the contact is closeable.

Abstract: A dual voltage power supply is disclosed for vehicles equipped with a DC generator, a single storage battery, a low voltage load circuit including the storage battery, and a high voltage load circuit including load devices designed to be powered by voltages higher than the battery voltage. At times when higher voltage power is required a low voltage regulator that includes a high current semiconductor switch converts power at the generator output voltage to power at a lower voltage for charging the battery and supplying the low voltage load circuit. There is a single voltage mode of operation when higher voltage power is not required in which the alternator is regulated to supply power at the voltage required by the low voltage load circuit and the high current semiconductor switch is held in its closed state to directly connect the generator output with the low voltage load circuit.

Abstract: An electric noise absorber, comprising divided magnetic substances made of ferrite, a holding member for holding the magnetic substances at its holding projections, and engaging members formed in the magnetic substances which engage with the holding projections. The electric noise absorber is attached to and detached from an electric cable easily without removing the electric cable and is composed of a minimum number of units.

Abstract: A collision detection system for a vehicle comprising an acceleration sensor for sensing the acceleration and deceleration of the vehicle wherein the acceleration sensor is a piezoelectric sensor; signal processing circuit coupled to the piezoelectric sensor for generating a first output when the vehicle deceleration is greater than a predetermined amount. A diagnostic pulse generator is coupled to the piezoelectric sensor for applying a diagnostic pulse to the piezoelectric sensor for distorting the piezoelectric sensor, thereby causing the piezoelectric sensor to generate an electrical output. The electrical output is applied to the signal processing circuit wherein the signal processing circuit produces a second output in response thereto.

Abstract: A circuit arrangement for triggering a safety system. A circuit arrangement serves the purpose of triggering a motor vehicle air bag system and contains an energy source, at least one release switch and at least two series branches connected in parallel and each branch has a tripping device for an air bag. A series capacitor is provided in every series branch, this capacitor limiting the current quantity in the tripped case in order to guarantee a reliable tripping of the further tripping device which acts with a time delay.

Abstract: An alarm system monitors a region, and includes a transducer supported to aim toward a boundary of the region. The transducer transmits sonic waves and receives echoes. The system generates an initial value corresponding to the distance between the transducer and a boundary of the region at one time, and activates the transducer at a later time to generate a current value corresponding to the distance between the transducer and a location from which the echoes originate. A control compares the current value to the initial value and activates an alarm when the current value differs significantly from the initial value. In one embodiment of the invention, the transducer aims toward a window of a vehicle and thereby detects either opening of the window or an associated door, breakage of the window, or intrusion into the vehicle between the transducer and the window. Transducers mounted on the underside of a trunk lid and a hood detect lifting the trunk lid or hood, respectively.

Abstract: The present invention is a safety system for a gas operated appliance in a vehicle. The system includes means for generating an electrical signal, such as a pre-determined voltage. The system also includes means for interrupting this electrical signal. One such means is a gas sensing means which is designed to interrupt the electrical signal in response to sensing gas. Another such means is an inertia switch means which interrupts the electrical signal in response to detecting a rapid changes in vehicle inertia or vehicle orientation. Yet another such means is a high temperature switch means which interrupts the electrical signal in response to detecting an elevated temperature in an area near said appliance. Finally, the system includes an emergency kill switch means for manually interrupting the electrical signal. The system further includes a fuel tank and a gas line between the fuel tank and the appliance.

Abstract: A power window switch for an automobile having a switching mechanism which includes a fixed contact plate and a circuit board secured within the inside of a resinous casing, the casing including a port. Positioned above the port is a button which includes a sloped elastic portion having its outer edge secured to the casing around the port. Compression of the button's sloped elastic portion places a conductive rubber contact attached to the bottom surface of the button into contact with a fixed contact on the fixed contact plate. The circuit board includes a switching circuitry which is responsive to variations in position of the button and attached conductive rubber contact.

Abstract: A method and apparatus for protecting an object against adverse electric effects which comprises:applying a continuous multiplicity of layers of a light weight protective continuous wrapper which is metallized on opposite sides and wider than the object, thereby to control the extent of the anti-electric protection.

Abstract: A device for protecting electronic equipment (42) against strong electromagnetic pulses, the equipment being contained in a radioelectrically insulated enclosure (40) and connected to a line outside the enclosure, the protective device being disposed in another radioelectrically insulated enclosure (2) and comprising an input (4) connected to said line (6) and an output (8) connected to the equipment, the device being characterized in that it comprises in series: at least one first clipping cell (12A) comprising a clipper having one end connected to the input of the clipping cell and another end to ground, and a low-pass filter disposed between the input and the output of the clipping cell, and a filtering cell (14) comprising in series a low-pass filter (12A) and if necessary a device (14B) for switching the cut-off frequency of the filter. The device is particularly applicable to the protection of telephonic and digital lines.

Abstract: It is an object of the present invention to provide a collision detector for a vehicle, capable of avoiding the adverse effect of the diagnostic pulses on the detection of a collision so that the failure of the acceleration sensor can be diagnosed correctly. A collision detector in accordance with the present invention comprises a diagnostic pulse generator which applies diagnostic pulses to an acceleration sensor to detect the failure of the acceleration sensor, and a diagnostic circuit which stops the output diagnostic pulses of the diagnostic pulse generator when the output of the acceleration sensor exceeds a malfunction avoidance level which is lower than a reference collision level.

Abstract: An EMR containment system coupling an EMR contained computer chassis and a wide band video monitor includes three plastic fiber optic cables terminated in a plug at each end. The computer chassis includes a socket having an electrically conductive surface in which three cylindrical fiber optic wave guides are positioned, each having at least a 3/1 ratio of length to diameter. Optical diodes are positioned at the end of each wave guide for coupling wide band R, G and B video and sync signals to and from the fiber cables when the plugs are seated within the sockets. A microswitch communicates with the rear of one of the sockets and is physically operable by a removable actuator carried by the mating plug for selecting between monochrome and color monitors.

Abstract: A conductor rail assembly parallel to an aircraft passenger seat track is coupled by direct electrical connection to the aircraft passenger entertainment system power supply. Passenger seat entertainment system power connectors are inserted into and retained in the conductor rail assembly to distribute power to the individual seat receivers.

Abstract: In an electrical desired-value transmitter, particularly for an electronic gas pedal system, a return spring (5) as well as a force elastic jump spring (15) arranged parallel to it are provided. The desired-value transmitter has an electric path converter which gives off an electrical desired-value signal. In order to verify the proper operation of the return spring, a contact spring (9) of a first safety switch contact (10) acts on it in such a manner that the force of the return spring is transmitted to the contact spring. In the event that the return spring is broken, the safety switch contact assumes a position which is characteristic of this and gives off a corresponding signal which can reduce the output of the engine. The electric path converter may be a potentiometer.

Abstract: A battery (+V) operable information handling and control system, for example for an automotive vehicle electrical system, has a central unit (10) and a number of remote units (20) each connected to the central unit (10) by a respective signalling link (40). The central unit (10) includes processing and control circuitry (13) and power supply circuitry (11) which are turned on to operate the processing and control circuitry (13) in an active mode of the system and are turned off in a sleep mode of the system. During the active mode the processing and control circuitry (13) applies a clock pulse voltage to a data line (41) in each signalling link (40). One of the clock pulse lines (41) is connected to power supply control circuitry (12) in the central unit (10) and to activation voltage drive circuitry (80) in the respective remote unit (20).

Abstract: A vehicle control apparatus comprises a condition detection means for detecting an output condition of any of sensors is in a condition which is improbable in practical use and which is a predetermined one, and a controlled variable conversion means for converting information of the specification change-over means for selection control procedures or control data into a controlled variable for an object to be controlled.

Abstract: A circuit for disengaging an electrically actuated transmission brake of a racing car has a bank of transistors in series with the brake to hold the brake on at the beginning of a race. The bases of the transistors are connected through normally open contacts of a relay to the emitter of a transistor that can be turned on or off by an optoisolator and the brake is connected through diodes to the relay coil to isolate the transistor bases once the brake has been disengaged. The optoisolator is connected, through diodes, to the zero count terminals of two clocked, programmable counters either of which will turn the optoisolator off at the end of a count. Reset terminals of both counters are connected to the outputs of a flip-flop to disable one counter and toggling of the flip-flop is effected by closing normally open contacts of a second relay to complete a circuit between the flip-flop input and a voltage regulator output through a Schmitt trigger.

Abstract: A power meter device having a transparent part and an electronic signal transmitter to permit remote meter reading has a thermal and electromagnetic interference shield for protecting the electronic transmitter means from high temperatures and r.f. interference. The shield comprises a metal-organic laminate of black and white polyester layers bonded to respective opposite sides of an aluminum foil so a portion of the foil is exposed by the black polyester along a top edge of the laminate, so portions of the black and white polyesters extend beyond the foil and are bonded together along a bottom edge of the laminiate, to provide a slit near one strip end and an interlocking or detent flap at an opposite strip end and to provide integral ground and mounting tabs in the portion of the metal foil exposed by the black polyester.