Abstract: An automobile anti-theft device ad system terminates operation of the automobile after it has been started and run momentarily by a thief whereby a thief is left, most likely in traffic, with a stalled automobile and an energized audible signal.

Abstract: A danger alarm system, for example, fire alarm system, utilizing a plurality of detectors which are connected to a central exchange over respective call circuits, the central exchange is provided with a memory in which characteristic data for each connectable detector can be stored. Data is cyclically sampled from the respective individual detectors and simultaneously therewith rated values for the corresponding detector are formed from the stored data and compared with the sampled data and, if necessary, alarm or trouble signals are derived from the comparison results.

Abstract: A device for reminding vehicle drivers to continuously retain their conscious mind on the task of driving the vehicle which utilizes impulsive gripping of the steering wheel of the vehicle with an increased force resulting from stimulation of the adrenal cortex and secretion of adrenalin as fatigue or fear registers in the brain of the driver. The increase in the gripping force serves to close an electrical circuit to energize a reminder in the form of an illuminated message or sign in a flashing pattern for a predetermined time period after which an audible reminder is actuated thereby combining the senses of touch, sight and hearing to remind the driver to give full time and attention to driving the vehicle so that the driver's conscious mind is kept on the task of driving and the driver is warned of imminent danger, thereby avoiding a potential accident.

Abstract: Digital interface circuitry is utilized to analyze the condition of alarm detecting loops. The new circuitry is utilized as an alarm system of the type which has a detecting loop extending between a central station and a remote zone at which is provided a normally open detection switch in parallel with a resistor. At the central station a digital high voltage is supplied to the input loop lead and a resistor is connected to ground from a reference point on the return lead, to provide a voltage divider network with the remote resistor. Two voltage-sampling branches connect to the reference point; the first branch has a comparator or pull-up circuit to indicate digitally whether the voltage level is substantially zero or greater, while the second branch has a level detector and pull-up circuit or a comparator to indicate digitally whether the reference point voltae is greater than its normal level.

Abstract: An installation in a vehicle for indicating the load distribution and for warning against overloads with load-value transmitters coordinated to the vehicle axles; in which a first load-value transmitter coordinated with a vehicle axle for respective lateral sides of the vehicle includes a load-dependent threshold switch whereby the two threshold switches connect the positive terminal of the battery by way of the ignition lock with a filter, and the filter output is connected with a switching device which turns on the load-distribution indication and/or the overload warning.

Abstract: A controlled electronic alarm signaling system, installed in a vehicle, or other property. The system has a transmitter which broadcasts a coded signal to a companion coded receiving device carried by an authorized person or installed at an authorized remote location. The transmission, which is of limited duration, occurs in response to tampering sensors located on the vehicle or other property which are connected to a control unit. Optionally, the control unit has the capability of switching on audible, visual and mechanical devices installed in the vehicle or other property for deterring and preventing theft, attempted theft, unauthorized entry and tampering. The transmitter is specifically tuned and uniquely coded to a receiving device which, having been activated, will in turn cause audible and other devices to be activated. A magnetic tape player with a speaker connected to the vehicle or other property sounds a warning message.

Abstract: A hand-held transmitter for the wireless transmitting of signals for operating remote-controlled garage door installations or the like is disclosed. The transmitter comprises a signal generating device, an energy source, and a hand-operable transmitter switch built into the transmitter housing. The transmitter is capable of selectively transmitting at least two different signals and includes a switch which is position-dependent with respect to the force of gravity for selecting one of said at least two different signals to be transmitted.

Abstract: Plural lamps are connected together at one end and in series with the primary winding of a transformer. The primary winding, responsive to application of an electric potential to one of the lamps, has a potential impressed there across and induces a transient in the secondary winding which generates a back E.M.F. in the secondary winding. A transistorized amplifier connected to the secondary winding amplifies the back E.M.F., and a monostable multi-vibrator has an input connected to the amplifier and is effective, responsive to the amplified back E.M.F., to effect generation of an illumination-received pulse at an output thereof. A J.K.

Abstract: An alarm for signalling the rise of water above a preselected flood indicative danger level. In a preferred embodiment, the alarm is connected across the terminals of the smoke sensing unit of a commercial smoke detecting and signalling device. The alarm includes a pair of elongated conducting wires extending from the smoke sensor terminals to a remote area at which it is desirable to sense a rise in water above the preselected danger level. The ends of the wires at the remote area are fixedly attached to a non-conductive head element so as to provide a separation space between the wires. A rise in the water level to the preselected level serves to bridge the space separating the ends of the wires, closes the circuit and activates the warning signal. In a preferred, alternate embodiment, the wires fixedly attached, in spaced relation, to the wire separating head element, are connected in series with a power supply and a signal.

Abstract: A signal switching system for actuating winking lights to be used for motor vehicles, for example, two-wheeled vehicles comprises an operational lever resiliently maintained in a substantially upward direction; one movable electrical contact portion for sending out an operational signal for actuating the winking signals, which is to be movable toward right and left with respect to a neutral state thereof for selectively contacting one of fixed contacts in accordance with a corresponding movement of the operational lever with respect to a neutral position while being arranged to be resiliently back to the neutral state thereof; and a cancelling signal switch means to send out a signal for winking signals to be put off when the operational lever is pushed substantially downward at the neutral position thereof.

Abstract: A remote control system for operating an electrical apparatus has a transmitter for transmitting binary coded commands to a receiver which in turn controls the operation of the electrical apparatus. The apparatus is activated by the receiver in accordance with the received command. Whenever an alteration in the operating condition of the transmitter occurs, a recognition signal is automatically generated and transmitted by the transmitter to signify to the receiver that such an alteration has occurred. The transmitter is equipped to automatically switch off only if it has transmitted the recognition command at least once.

Abstract: An instrument panel assembly having a plurality of indicating elements and a test switch for concurrently indicating the operability of the individual indicating elements. A plurality of electrical devices is connected in association with the test switch and indicating elements so as to prevent false concurrent operation of the indicating elements. The assembly may include circuitry for causing an intermittent alarm as an additional test indication during the testing of one or more of the indicating elements.

Abstract: A monitoring system for detecting and indicating typical operating conditions, particularly vibration of an aircraft engine, wherein at least two measuring feelers such as accelerometers are exposed to the same conditions, the output signals from said feeler are compared with each other and logical means detect normal conditions when the output signals are equal, system defect conditions when the output signals differ from each other and alarm conditions when the output signals both exceed a safety limit. Such a system greatly increases the reliability and at the same time avoids false alarms.

Abstract: An electrical translation circuit for detecting the initiation and termination of a lane change or turn of a motorcycle, automobile, boat or other like vehicle. A linear acceleration sensor detects the lateral movement of a vehicle commencing a lane change or turn and produces a signal responsive to same. The output of the sensor assembly is translated into a detectable signal and input as a reset signal to memory units which have stored an electrical signal equivalent to the manually selected direction of the turn. An appropriate change in signal level from the sensor assembly is processed to eliminate a response to false turn indications. Upon the completion of the turn or lane change, the memory unit indicating the direction of change will be reset terminating the illumination of the vehicle's directional signal.

Abstract: An abnormal tire profile indicating system comprising a telemetry unit mounted on each wheel of a vehicle and a central receiver. Each telemetry unit comprises a piezoelectric transducer which is deflected with each wheel revolution when the tire profile is low. Deflecting the transducer produces an electric pulse. The transducer pulses are accumulated on a charge storage capacitor until a threshold level is reached. A threshold level detector causes a transistor connected to the capacitor to become conductive when the threshold level is exceeded. This transistor, when conductive, powers a counter, an encoder and a transmitter. The counter counts the number of times the transistor become conductive and produces an enable signal when a predetermined number is counted. The enable signal enables the transmitter to receive an encoded signal from the encoder and modulates a radio carrier frequency with the encoder signal. The modulated radio signals are received from each telemetry unit by the central receiver.

Abstract: An alarm for waking a dozing driver includes a plurality of electrical switches arranged about the steering wheel of a vehicle. A rigid member extends continuously about the steering wheel and is resiliently attached thereto and arranged with respect to the switches so that a normal grasp of the steering wheel causes the rigid member to be displaced and at least one of the plurality of switches to change from its normal position. Alarm means are electrically connected with the plurality of switches and with a power supply so that the change of state of a switch from its normal position deactivates the alarm means.

Abstract: An intrusion sensor circuit for protecting building openings having at least one moveable closure member, the sensor circuit including a magnet and a pair of magnetically operated switches mounted on the building opening and/or the moveable closure member therefor, the magnetic switches being commonly moveable relative to said magnet. An alarm circuit connected to the magnetically operated switches transmits an alarm signal to a receiving or monitoring station upon movement of the closure member a selected distance relative to the building opening when the circuit is armed. The pair of magnetic switches are positioned a short selected distance from each other, the first of the switches being positioned opposite a permanent magnet member on either the moveable closure member or the building opening and the first magnetic switch is adjacent thereto when the opening is closed.

Abstract: Each alarm unit has a sensing circuit which supplies a signal in the presence of a particular problem such as smoke, heat, or equipment failure. The signal energizes an electronic switching device, to couple power to a horn which then produces an alerting tone. The output of the sensing circuit is also coupled by a resistor to electronic switching devices in the other alarm units in the system, so that the occurrence of a problem at one location activates the horn in each alarm unit.

Abstract: An alarm system in which local transmitters emit substantially pure acoustic signals for at least a predetermined minimum interval. The receiver includes a microphone and amplifier for transducing the acoustic signals into electrical signals. These electrical signals pass through two bandpass stages, the second being a phase locked loop circuit. An RC timing network is connected to the second bandpass circuit. After about 7500 cycles of the electrical signal have been received an "alarm received" signal occurs. The "alarm received" signal is applied to the triggering input of a free-running pulse generator which supplies pulse trains to a counter and is itself halted when the counter reaches a first intermediate state. A second "alarm received" signal is required to restart the free-running pulse generator and thus advance the counter beyond said first intermediate state.

Abstract: An alarm device which eliminates the possibility of totally disarming its alarm by a thief. In one embodiment, a magnet is swiped by a reed switch a predetermined number of times to set the device in an armed condition. With each swipe, a stepper arm in the electrical circuitry moves from one contact to the next, until in a contact position, known only to the authorized user, that sets the device in such armed condition. Should any current be drained off from the electrical source (battery) to energize any car electrical circuit (light bulb, say), current is also then made available to the armed device through the stepper arm contact, the alarm of the device thereby being activated. A simpler embodiment includes a mechanical latching relay DPST switch which is normally open, but is closed upon a magnet passed over a first reed switch to arm the device. The magnet is passed over a second reed switch to open such relay switch, disarming the device.