Abstract: A personal security system including features for monitoring guard tours and other surveillance by security personnel. The security system includes a plurality of hand-portable transmitters, a plurality of fixed receivers and a control station. The transmitters are actuated to emit radio frequency signals including a class code that identifies first and second sets of the transmitters. The first set is assigned to security personnel and the second set to system subscribers. The receivers decode the signals from the transmitters and provide an output representing the receiver and the received class code. The control station identifies the location of the transmission using information from the receiver output, and records the time of the transmission. If the class code represents a security-assigned transmitter, the control station reports the information as a security function, such as a guard tour.

Abstract: A physiological-condition monitoring system is attached to a person for providing monitored physiological data signals. A computer system processes the physiological data signals to determine whether the person may have suddenly experienced fear by comparing the monitored physiological data with stored stress profile data for the person. The stress profile data is based upon prior measurements of the monitored physiological conditions of the person during situations of stress. When such processing by the computer system determines that the person may have suddenly experienced fear, the computer system provides an alarm-indication signal to an initial alarm indicator. If the initial alarm indication was false or if the condition causing the person to suddenly experience fear was very brief and no longer poses a threat, the person can operate an alarm deactuation switch to cause the computer system to discontinue the alarm indication signal.

Abstract: A security system for monitoring an area under surveillance includes a transmitter for generating radio frequencies (RF) signals when actuated using an actuator. A sensing station receives the RF signals from the transmitter. A monitoring station generates video signals of the area under surveillance and provides one end of a duplex audio communications system. A control station, coupled to the sensing station and the monitoring station, actuates the monitoring station in response to the RF signals sensed by the sensing station. The control station includes an opposite end of the duplex audio communications system and a display for displaying the video signals.

Abstract: An actuator for a personal protective spray canister having a container for holding a pressurized protective material capable of being propelled in a gaseous cloud to at least partially disable a person and a manipulative valving device protruding outwardly from the container, with the valving device having an outlet for directing the gaseous cloud from the container, and a valve element movable between a first biased normal position closing the outlet and a second depressed operative position opening the outlet to allow the material to be propelled from the container as a cloud.

Abstract: A cylindrical personal protection device is disclosed having an ampule section containing a flexible, multi-chamber ampule with a nozzle, a light and a removable safety cap. The ampule contains a deterrent spray and a glowing liquid. At least a portion of the ampule portion is removable allowing access to the ampule. A trigger proximate the ampule extends beyond the periphery of the ampule section. A body section has a battery receiving area and an alarm. The electronics connect the battery receiving area, trigger, alarm and light. The electronics activates the light and alarm, in response to activation of the trigger, causing them to pulse simultaneously. The ampule portion and the body portion are removably connected to one another. At least a pair of protective bumpers prevent damage. A safety pin prevents the trigger from contacting the ampule and partial removal of the safety pin allows the trigger to contact the ampule, expelling the contents of the ampule, and activating the alarm and light.

Abstract: Alarm apparatus which generates a repetitive sound wave having at least two pulses of predetermined frequencies within a predetermined interval of time. A resonator generates the clock frequency therefor. The resonator may have a low tolerance of less than about 0.1 percent so that at least two pulses may be detected by a receiver having a similarly low tolerance so that false triggering of the receiver by other transmitters or background noise may be prevented. A plug is inserted into the alarm housing to maintain circuitry for initiating operation thereof open. Pulling of the plug from the housing allows the circuitry to close to initiate operation of the alarm. A push button is provided on the end of the plug to close the circuitry for initiating operation of the alarm while the plug is inserted into the apparatus. Once the alarm has been initiated, the circuitry is such that the alarm cannot be inactivated except by removal of the internal power source.

Abstract: The system includes a receiver/recorder/transmitter carried by the officer which can be activated by a manual switch or a sensor switch associated with the weapon holster and weapon to record and transmit a signal indicating removal of the weapon from the holster and record and transmit all audible sounds, conversations and the like that occur in the vicinity of the officer. The information that is received by the receiver/recorder/transmitter carried by the officer is transmitted to a receiver/recorder/transmitter in the officer's patrol car which receives the information from the transmitter carried by the officer, records and transmits it with a longer range signal to a dispatch station.

Abstract: A key chain alarm and light is disclosed that overcomes the problems associated with prior art personal alarms. The invention combines the functionality of a key chain, flashlight and an alarm into a unitary assembly. The invention is physically diminutive in size and ergonomically shaped to facilitate its handling. However, it produces an audible alarm significantly louder than other prior art devices. The invention utilizes a unique speaker assembly to produce an extremely loud alarm signal. A piezoelectric transducer provides the vibratory medium. The vibrations produced by the transducer are acoustically focused and harmoniously amplified by an acoustic chamber before passing into a reverberation chamber. The reverberation chamber also increases the amplitude of the sound waves before selectively releasing them to produce the alarm signal. This signal immediately draws attention to the user in emergency situations. The alarm is easily activated by simply moving a switch to activate the alarm.

Abstract: A personal lockable alarm device may be lockably attached to either an ankle or a wrist to produce a loud noise when activated, and may not be deactivated or removed from the ankle or wrist until a code is entered into a locking mechanism of the device.

Abstract: A remote alarm system that includes short range personal portable transmitter devices, which can be manually actuated in order to transmit a predetermined warning signal, and a plurality of fixed receiver devices disposed at suitable locations on a site to be protected, the said receiver devices being suitable for receiving the warning signal transmitted by any one of the portable devices located within range and transmitting the warning thus detected to security personnel.This system is more especially intended for the users of public places and public transport such as, for example, the underground railway.

Abstract: A medical alert pendant for use as a wireless remote actuation device in an emergency alarm system or the like includes a housing with a circuit board assembly and a resilient mounting and sealing membrane mounted therein. The housing includes an upper housing section which has an opening in the surface thereof, and a lower housing section. The circuit board assembly includes a power source, a signal transmitter and a depressible switch which activates the transmitter. The membrane is positioned between the housing sections and includes a flexible button which is disposed in the housing opening and juxtaposed to the switch on the circuit board assembly. The depression of the flexible button will operate the switch on the circuit board. The membrane includes a first peripheral seal which seals the juncture between the housing sections and a secondary seal which seals the opening in the upper housing section.

Abstract: A security alarm system having a transmitting unit adapted to be worn as a bracelet, and a remote alarm unit. The transmitting unit is preferably in the form of a bracelet having a cavity enclosing an rf transmitter operable to transmit encoded signals to the remote unit for actuating an audible alarm.

Abstract: A personal alarm which is compact, portable and fashionably designed. In one embodiment, this personal alarm is structurally incorporated into a wrist watch with the alarm components arranged thereon in a fanciful yet highly functional manner. This alarm may also be structurally incorporated into other conventional items such as a bracelet, pendant, necklace, keychain ornament, or any other conventional item which is often carried by the persons to be protected. In a further embodiment, the compact size is achieved without sacrificing intensity in the alarm signal by incorporating a specially wound autotransformer and an efficient switching device so as to provide a tuned warbling signal upon a piezoelectric transducer. Additionally, the alarm may be activated or deactivated by manually actuating an actuator, such as a switch or plurality of switches, in a particular sequence.

Abstract: An electrical shock apparatus includes a power source, a high voltage generation device for generating a very high voltage to shock a robber in response to a connection to the power source, an alarm device for generating an alarming sound to shock a robber in response to a connection to the power source, a function selection switch switchably connecting the power source to either the high voltage generation device, the alarm device, or an empty connection. A pin-socket switch is connected between the power source, the function selection switch, and the alarm device. The pin-socket switch includes a socket and a pin removably received in the socket. Normally, the pin of the pin-socket switch is retained in the socket and electrically connects the function selection switch to the power source yet separates the alarm device from the power source. The function selection switch electrically connects the power source to the empty connection via the pin-socket switch in normal condition.

Abstract: A method and apparatus are provided for carrying and accessing multiple safety devices, wherein the removal of one safety device simultaneously activates a second safety device. The method includes removing a chemical spray canister secured to a pack body, wherein an activation cord pulls an alarm pin thereby activating an audible alarm. The apparatus includes a spray canister and an audible alarm attached to a pack body, the canister and alarm being concealed by a cover. The cover is attached to the pack body with multiple slide fasteners. The cover has attached thereto a rip cord, so that when the rip cord is pulled by the user, the cover is partially or completely removed to expose the spray canister and the alarm; the spray canister and the alarm are interconnected by a cord so that removal of the spray canister simultaneously activates the audible alarm.

Abstract: An inflatable member sits on a motor vehicle seat and can be seen from outside through a vehicle window. The inflatable member is in the form of a simulated living creature. An electrically powered air pump is provided for inflating the inflatable member. A switch, under operator control, is provided for activating the air pump. An electrically powered device is provided for emitting sound, and, under operator control, a switch is provided for activating the sound-emitting device. The air pump and the sound-emitting device include a plug which is adapted to fit into a cigarette lighter in a motor vehicle. The sound-emitting device includes recorded-sound media, such as a cassette tape, a cassette player, and a speaker. The speaker is housed in the inflatable member, and the cassette tape player is housed in a box separate from the inflatable member. More specifically, the box houses the air pump, the cassette player, and the operator-controlled switches for the air pump and the cassette player.

Abstract: An automatic gas spray device for deterring crime is provided. The device includes a longitudinally grooved seat and a spring inside a casing for securing the position of a gas tank. A female connector on the outlet of the gas tank is detachably connected to a male connector coupled to a nozzle through a solenoid valve. A battery case is fastened to an opening formed in the casing, into which a rechargeable battery is inserted and covered by a battery lid. A control main unit disposed within the casing is controlled by a sensor to give a warning sound for 5 seconds and then to switch on the solenoid valve for dispensing gas from the nozzle for a predetermined time duration. A gas volume monitor and a battery power indicator is also provided.

Abstract: An alarm system for protecting a person and a valuable item from a thief is disclosed. The system comprises a personal module and an item module, each module being identical in size and shape and detail of construction. The modules are adapted to work in a paired, opposed relationship with each other. Each module has a plurality of flat multipole magnetic couplers recessed on an exterior face thereof. Each module has an electrical circuit contained within the casing having a siren transducer and a replaceable DC power source and an alarm switch therebetween. The alarm switch is adapted to close the circuit between the siren transducer and the DC power source when the modules are separated. Further, each module has a reed switch coupled to a magnetic switch in the casing inside the opposed module for deactivating the siren transducer and the replaceable DC power source upon the mating of the modules. The first module, the personal module, is attached to the person by a lanyard.

Abstract: A portable personnel locating safety device for use in multiple-storied or high-rise buildings for attachment to a window to allow ground observers to determine in which rooms occupants are trapped, especially during a fire. The device is adhered to a window and has an aperture with an illuminating flashing light attached therethrough. The kit contains internal compartments which house rolls of tape that can be used by trapped occupants to seal cracks around doors to reduce the intake of smoke until help arrives.

Abstract: An alarm device has an actuating member for energising the alarm, the member being placed in its actuating state by passive action on the part of the user in the case of an emergency. A preferred form of actuating member according to the invention is a ring pull, in which the alarm device is caused to operate by the ring pull being pulled away from the remainder of the device.

Abstract: A vehicle anti-theft device disengages the ignition of the vehicles in which it is installed after a predetermined time has elapsed after a foot switch is pressed with the ignition system on. After a second period of time after the foot switch is pressed a horn is activated and tear gas is dispensed through the ventilation system of the vehicle into the passenger compartment.

Abstract: A protection apparatus aids a user of the apparatus in defending against an attacker and signals that the user is being attacked. The protection apparatus attaches a spray retardant and an alerting device to the user of the apparatus and includes a trigger mechanism that activates both the spray retardant and the alerting device substantially simultaneously. The trigger mechanism is capable of being activated by a single digit of a hand of the user.

Abstract: A personal safety device controlled by a microprocessor which responds to commands, such as activation and deactivation commands. The microprocessor acts to control sound emitted from two separate speakers. The sound is controlled through digital outputs of the microprocessor such that the sound emitted by the first speaker has a first sinusoidal component sin(a) and the sound emitted by the second speaker has a second sinusoidal component sin(b) yielding a complex tone when perceived by a human ear. The personal safety device further allows for coded deactivation thereby rendering it difficult for a third-party without knowledge of the code, such as a would-be attacker, to deactivate the device. Further, the personal safety device provides a detection circuit for detecting a low battery condition. Finally, a method for operating the device is disclosed.

Abstract: A personal protection device includes a generally dumbbell shaped hollow housing with an operable lever mounted in the central portion of the housing. An electrical circuit within the housing connects first and second switches to a power source and a speaker to produce a high decibel sound when both switches are closed. The first switch is connected to the lever and is maintained in an open position by gripping the housing and lever. The second switch is operable to the open position only upon operating a numeric code or other key lock system. Once the key lock switch has been closed, the speaker will be activated upon release of the lever on the dumbbell. A relay in the electrical circuit will bypass the first switch connected to the lever, once the relay has been activated, so that the speaker cannot be turned off except by opening the lockable second switch.

Abstract: A personal alarm which can be manually actuated to produce a high-intensity sonic alarm signal, and which is compact, portable and fashionably designed. In one embodiment, this personal alarm is structurally incorporated into a wrist watch with the alarm components arranged thereon in a fanciful yet highly functional manner. This alarm may also be structurally incorporated into other conventional items such as a bracelet, pendant, necklace, keychain ornament, or any other conventional item which is often carried by the persons to be protected. In a further embodiment, the compact size is achieved without sacrificing intensity in the alarm signal by incorporating a specially wound autotransformer and an efficient switching device so as to provide a tuned warbling signal upon a piezoelectric transducer.

Abstract: A personal alarm device having programmable deactivating, apparatus. The device includes a keypad by which a personal numerical code can be entered. This code is the only manner by which the alarm of the device can be shut off once activated. The code can be changed only by a user knowing the previously-entered deactivation code.

Abstract: A sound anti-muffler provides at least one sound channel to permit sound from a sound generator to travel sideways to the outside air even though a hand is placed over the sound anti-muffler in an attempt to muffle the sound.

Abstract: A personal protection system is provided, which consists of a band to be worn around a wrist of a person. A first mechanism is for producing an audio signal and is disposed in the band. A second mechanism is for powering the first audio signal producing mechanism and is disposed in the band. A third mechanism is for manually activating the second powering mechanism and is disposed in the band. A fourth mechanism is for keeping the band closed around the wrist of the person and is disposed in the band. A fifth mechanism is for manually deactivating the third manually activating mechanism and for opening the fourth band closing mechanism simultaneously.

Abstract: A personal security system and process for use thereof wherein customers of a security service are provided with personal transmitters capable of selectively transmitting one or more radio signals at a desired frequency, the signals representing the particular character of service that is desired. A number of antenna/transmitters are located in evenly spaced relation in the geographical area and correspond to a computer grid work of the geographical area. The antenna/transmitters receive signals having X and Y axes from the personal transmitters, amplify the signals and transmit them to signal processing equipment. The signal processing equipment includes an automatic direction finding circuit capable of receiving the X and Y axes components of the personal transmitter signal and the vertical elevation of the signal in order to yield an ADF signal output reflecting the location of the signal.

Abstract: A digital signal transmitter which is mounted upon a rigid panel by resiliently deformable strips such as double-sided adhesive or springs. The mounting is such that a button is disposed adjacent a switch contained within the transmitter structure. The entire apparatus is then worn by a person upon a belt-like structure in such a way that upon muscular expansion by the person wearing the structure, the button closes the switch causing the transmitter to emit a radio frequency signal. The radio frequency signal may then be received by a transponder or other electronic device which amplifies and converts the signal and directs it toward a central station.

Abstract: A personal safety device controlled by a microprocessor which responds to commands, such as activation and deactivation commands. The microprocessor acts to control sound emitted from two separate speakers. The sound is controlled through digital outputs of the microprocessor such that the sound emitted by the first speaker has a first sinusoidal component sin(a) and the sound emitted by the second speaker has a second sinusoidal component sin(b) yielding a complex tone when perceived by a human ear. The personal safety device further allows for coded deactivation thereby rendering it difficult for a third-party without knowledge of the code, such as a would-be attacker, to deactivate the device. Further, the personal safety device provides a detection circuit for detecting a low battery condition. Finally, a method for operating the device is disclosed.

Abstract: An alarming and entertaining glove includes a plurality of illuminators and buzzers mounted on a glove body electrically connected to an audio and optical driving circuit secured on the glove body, and at least one trigger switch formed on an inside surface portion of the glove preferably formed on an inside surface portion of any finger sheath and electrically connected to the audio and optical driving circuit, whereby upon a grasping of a wearer's hand or closing of the wearer's fingers with the hand, the trigger switch will be actuated to spread a warning sounding and to illuminate the illuminator for both audio and optical alarming purpose or for music sounding for entertaining purpose.

Abstract: A home communicator includes aid request circuitry capable of establishing communication with a central monitoring station in response to a first predetermined activation step performed by a subscriber and test circuitry capable of self-testing the home communicator in response to a second predetermined activation step formed by the subscriber. The home communicator further includes enable/disable circuitry capable of transmitting an identification number to a central monitoring station in response to a third predetermined activation step with the aid request circuitry and the test circuitry being unresponsive prior to the functioning of the enable/disable circuitry.

Abstract: Disclosed is a remote responsive system for warning security personnel or other individuals. The system includes a receiver unit, which is responsive to a remote power switching device, for controlling both a visual and audio warning device. A transmit unit includes the remote responsive power switch for supplying power to the receiver location. The remote power switcher is controlled by a hand-held remote transmitter.

Abstract: A personal security system includes at least one movable transmitter adapted to produce an emergency signal transmission when activated and a plurality of transceivers adapted to receive emergency signal transmissions from the movable transmitter. The received strength of an emergency signal received by one of the transceivers is compared with the received signal strength of an emergency signal received by other of the transceivers, and an alarm signal is produced by a transceiver in response to receipt of a transmission whose signal strength is stronger than any other transmission signal strength to which it has been compared. The alarm signal may include a code identifying both the activated movable transmitter and the transceiver producing the alarm signal.

Abstract: A personal security system includes at least one movable transmitter adapted to produce an emergency signal transmission when activated and a plurality of transceivers adapted to receive emergency signal transmissions from the movable transmitter. False alarms are avoided by inhibiting multiple transmissions by a movable transmitter within a predetermined time period.

Abstract: A portable, personal alarm system (A) which incorporates a loud audio alert (19, 9/10) that, when engaged, is unable to be removed from the user, or terminated without the cooperation thereof. The preferred embodiment of the present invention comprises a small, hand-held alarm system having a strap (5) with a locking mechanism for securely affixing the system to the user, compressed gas containment or electrical power for providing a loud audio horn alert, a locator light (4) for signalling the location of the user in dark areas, and a mechanism for selectively locking the horn alert in the "on" operating position which cannot be reactivated without unlocking the strap, which uses a precoded combination type lock. In use the push button (3) end (24) is placed within the palm so that the push button lies right under the fingers, with the main body (1) extending up along side of the inner side of the wrist.

Abstract: Luggage having alarm device to protect against robbery, burglary and being inadvertently left behind comprises, inside the luggage, an alarm and shocker assembly that includes a siren and circuitry with a transformer to produce a high voltage. Bare electrical wires are spread around the inner wall of the luggage. A remote controller that is capable of dispatching a coded signal is used to activate the circuitry to produce a high voltage electric shock and/or sound an alarm to prevent the luggage from being carried away or stolen. The alarm assembly may further include a signal transmitting circuit and a receiving circuit and a buzzer may be added to the remote controller carried by the luggage owner. The effective distance can be preset for the response of a signal so that when the luggage is in a position beyond said preset distance, the alarm is triggered to warn that the luggage is being burglarized or is being inadvertently left behind.

Abstract: This invention relates to a type of "automatic gas spray device & its safety system", particularly to one that can be installed at various locations to automatically spray irritative gas activated by an electronic control main unit and a sensor in case of an attack, robbery or burglary to hinder villains and with a closed-circuit monitor, illumination equipment, alarm and such components as solenoid sensor to comprise an integrated safety system, so that in case of an emergency, to simultaneously give alarm and switch on the illumination equipment and take a photo of the villain with a closed-circuit monitor to facilitate identification of the villain.

Abstract: A hand held personal alarm incorporating a high intensity light and loud horn and further incorporating a plurality of switches that are located a distance apart that prevents their actuation by the digits of a single hand or by pressing the alarm against a single surface. The switches provide the only means of deactivating the alarm once activated. An alternative embodiment includes a timing circuit that prevents deactivation of the alarm for a set period after activation. Both schemes prevent easy deactivation of the alarm by an assailant, thereby providing more protection than with conventional hand held alarms.

Abstract: An emergency alarm system includes a portable digital pulse transmitter having a failsafe mode of activation by the user thereof. A coded pulse signal is transmitted to a decoding device in a digital receiver. The receiver has a latch relay which is connected in circuit with a power source and an alarm device. The alarm system may have a water sensor for setting off the alarm in the event the user falls in the water and may have remotely activated transmitters for locating the user with a receiver and directional antenna.

Abstract: A portable alarm includes a light circuit having in series a normally closed first relay contact and a light, an alarm circuit having in series an impact switch and an alarm, a manual switch in series with each of the light circuit and the alarm circuit for activating the light circuit and setting the alarm circuit to a ready position, the impact switch being operable upon impact to turn the alarm on when the alarm circuit is in the ready position, an alarm maintenance circuit connected in series with the alarm circuit, a relay in series with the impact switch, the relay being operable to open the normally closed first relay contact and to activate the alarm maintenance circuit, and a power source for the light, alarm and alarm maintenance circuits.Once the portable alarm is set to the ready position a light goes on. A severe jolt to the pocket alarm and thus the impact switch turns the light off and activates an alarm. The alarm can only be switched off by using a recessed switch.

Abstract: The present invention provides a hand held alarm device for personal use. The alarm device comprises a housing having an alarm circuitry contained therein and a activating switch located thereon. The housing has an attachment strap for releasably attaching the alarm device to the hand such that the activating switch is maintained in a positon to be within reach of the fingers, both during and after a fright response. In an aspect of the invention, the alarm device includes a deactivating switch physically separated from the activating switch for deactivating the alarm device.

Abstract: An infra-red remote personal alarm system consists of a portable transmitter unit (10) which is intended to be worn or to be manually carried by the user, and which is operable by the user at any particular location to transmit an alarm signal in an emergency and which is to be received by a central receiving station (41) so that appropriate action can be initiated in response thereto. The transmitter unit is electrically operable and includes means (15) for transmitting pulsed infra-red alarm signals which can be picked-up by an infra-red signal receiver at the location of the user, and then retransmitted as an oscillating electrical signal via direct wiring (38, 39, 40, 42, 43) to the central receiving station (41) as a warning signal indicative at location monitoring points (43, 44) of the location from which the emergency call has been made.

Abstract: A personal safety alarm and light device can be either worn by a user or releasably attached to a handbag or purse. The device provides both an audible and visual alarm that can be actuated in threatening or dangerous circumstances. In addition, it provides a steady source of illumination to function in a manner similar to a flashlight. It also has a light source that flashes and can be used when the device is worn by a jogger or a bicyclist to make the person more visible when that person exercises in diminished ambient light.

Abstract: An emergency transmitter system is disclosed for enhancing the personal security of individuals within a predetermined geographic area such as a campus, shopping mall or stadium. A plurality of fixed transceivers are located at selected locations within the predetermined geographic area, preferably in a substantially equidistant pattern throughout the area. In a preferred embodiment of the present invention, each fixed transceiver is preferably located in conjunction with a street light in an elevated location. A battery powered low power portable transmitter is then issued to selected individuals, each transmitter including circuitry for transmitting a coded signal associated with a particular individual. In the event of an emergency situation, the portable transmitter is activated, utilizing an irrevocable manual activation switch, and the coded signal is transmitted utilizing the low power radio frequency signal.

Abstract: An abnormally high pulse rate is an indicator of personal stress and can therefore be used to test persons for a guilty frame of mind which may, for instance be caused by an attempted theft by an employee from the premises where he works. An instantaneously measured pulse rate is compared with an average pulse rate computed from a past history of pulse rate measurements conducted in respect of the particular person under test. A discernable signal is produced if the instantaneous pulse rate exceeds the average by more than a predetermined amount. In cases where there is no average pulse rate, for instance where the person under test is a first time visitor to the premises, the instantaneous pulse rate is compared with a predetermined pulse rate.

Abstract: A container such as an attache case, handbag, suit case lock box or the like, which is automatically, electrically energized in the event of unauthorized transport or tampering, whereby an electrical shock of non-lethal, but substantial magnitude will be imparted to a person other than the owner who may be in contact with the container. In the preferred form of the invention, the security container is also provided with an audio alarm which is activated upon unauthorized movement of the container.

Abstract: A purse includes a wavy wire fully distributed on a purse casing and an alarm formed in the casing whereby upon a cutting or breaking of the wire by a thief or pickpocket, the disconnection of wire will actuate the alarm sounding for preventing its robbing, and also includes an emergency switch which is operated by pulling a handle or belt of the purse to disconnect the wire for sounding the alarm.

Abstract: A foot switch operated by a driver of a vehicle such as a taxicab actuates a circuit which disables the indicating lamps in the taxi's roof light and energizes distress signaling lamps in the roof light so that it flashes on and off. The flashing roof light calls attention to the cab and informs others that the taxi is in a distress situation.