Abstract: A sound or other such alarm which in practice is mounted on a fence so as to signal any attempt to surmount or bypass the fence, such attempt being an alarm condition; such alarm being characterized by its ability to distinguish said alarm condition from non-alarm conditions, thus having minimal false alarms, even though in all instances the alarm basically is triggered into operation in response to vibratory movement of the fence. This ability of the alarm to distinguish between alarm and non-alarm conditions is achieved by requiring a selected number of alarm-operating pulses (i. e. a selected number of vibrations in the fence) before the alarm operates.

Abstract: A method and apparatus for judging the psychosomatic condition of the driver in a motor vehicle, wherein engine-lock means are provided to control the ignition system of the engine. Prior to starting of the engine, the driver must go through a stationary adjusting task which is utilized to check the driver's mental and physical ability for maintaining a part of his body under a certain strained situation for a certain fixed time. Said ignition system of the engine cannot be made operative unless the driver passes through said stationary adjusting task.

Abstract: A timed buzzer assembly having a rectangular base with four terminals insert molded in the base and a generally cup-shaped cover member over the base providing the housing. All of the terminals project through the base member with the armature of the buzzer supported on one terminal and the coil assembly of the buzzer supported on a second terminal. For the purpose of timing the buzzer and also controlling a warning light, a bimetal timer is provided having bimetal elements one supported on a third terminal and the other supported on the above referred to second terminal. The fourth terminal is a ground to which a heating element for the bimetal timer is connected.

Abstract: An emergency exit latch is disclosed for locking and unlocking a portal such as a window or door and sending a signal to a remote point when the portal has been unlocked. The latch includes a latch operator which is rotatably mounted on the portal. The latch operator includes a tang which is integral with the operator and performs a locking function by mating with means associated with the frame when the latch operator is rotated into the locked position. When the operator is put in the locked position, the tang also actuates a switch. Thus, when the operator is rotated out of the locked position, the switch changes state and provides an indication that the door is no longer properly locked. In the preferred embodiment, the design of the exit latch is such that the switch will change state even before the window has become completely unlocked.

Abstract: A detection and alarm system for detecting and removal of a fire extinguisher from its usual location including an electrically conductive breakaway lanyard positioned around the neck of the fire extinguisher, its ends connected to two male prongs plugged into a female receptacle of a supervisory circuit leading to an alarm circuit. When the supervisory circuit is interrupted by the removal of a fire extinguisher, a relay trips the alarm circuit.

Abstract: A fire detection system of the type utilizing an optical detector with discriminating photo-cells connected in series to form a voltage divider, with the rise in voltage at the junction of the photo-cells being utilized as the input to an amplifier to energize an alarm or actuate an extinguishing system, in which the ground wire to the remote optical detectors is also used as the ground wire between the amplifier and the actuating means for the alarm or the extinguishing system, whereby a break in the ground wire, which causes a rise in voltage at the junction, is prevented from causing a false alarm, since said break also breaks the circuit between the amplifier and the actuating means.

Abstract: Apparatus for the prevention of theft of electrical appliances comprises an automatic electronic lock off system which may be activated in a particular manner after the appliance is connected to a source of electrical power, and which becomes deactivated when the appliance is disconnected from its source of power to cause the further disconnection in the appliance electrical circuit. The apparatus comprises essentially three components, a key-operated activator switch, a relay, and the appliance's own on-off switch, all connected with the appliance's own circuit leads in a particular manner. The key-operated activator switch is designed to be operated with its own individual key and may, if desired, be hid from view. Initially, the key-operated activator switch is briefly closed to complete a circuit with the coil of the relay. Activation of the relay closes a normally open switch in series with the appliance on-off switch to permit the appliance then to be operable.

Abstract: The present invention is in an alarm system including a sound generator, a sound responsive switching circuit and an alarm. The sound generator includes an element capable of snapping rapidly from one position to another upon change in a monitored condition. The switching circuit includes a sound activated switch which is energized in response to a sound of predetermined frequency eminating from the sound generator. This creates an electrical signal that passes through the switching circuit to actuate the alarm. The alarm may be audible and/or visual and the sound activated switch after a predetermined time may deenergize the audible alarm. The sound generator is positioned at the location where the change in condition is to be sensed. All other parts of the system are adapted to be spaced remotely therefrom.

Abstract: A method and apparatus for controlling rodents is disclosed utilizing ultrasonic signals. The ultrasonic signals are of the square wave type. They are varied from approximately 28 to 20 KHz during the first time period of approximately 20 microseconds, then maintained at a frequency of approximately 20 KHz for a second time period of approximately 780 microseconds. The generated square wave signals are converted to sound waves by a transducer such as a speaker. The frequencies employed and the duration of these frequencies are selected to maximize the irritating effect upon the rodents.

Abstract: A rotary electromagnetic indicator having a stator with an annular arrangement of five equiangularly spaced radially inwardly extending salient poles, a winding on each stator pole and an indicating rotor having a permanent magnet with diametrically opposed north and south salient poles, each having an angular width equal to the included angle of a pair of adjacent salient poles of the stator.

Abstract: The disclosed circuit provides a signal generator which is particularly adapted for use as an audible "kilo-sonic" game device in which a plurality of switches are provided so that the different combinations of switch positions produce a corresponding number of different sounds. The circuit includes a voltage-controlled-oscillator (VCO) having an output coupled to a transducer such as a speaker. The VCO is modulated in accordance with a control signal, provided by an up-down staircase generator which is responsive to a pulse generator, to vary the frequency of its output signal. The output of the pulse generator is also selectively coupled with the output of the staircase generator.

Abstract: Methods and apparatus are disclosed for providing a multipath optical communications system within a single fiber. One embodiment comprises a concentric multi-core optical fiber having an inner core for transmitting information and an outer core for transmitting a security signal. Attempted access to the inner core causes a decrease in the security signal intensity alerting the operator to the attempted intrusion.

Abstract: Disclosed is a boat alarm system including a sensor that provides a sensor output in response to a predetermined change in its orientation, a timer for providing an alarm signal in response to a one-quarter to one second period of uninterrupted sensor output and a means for generating an alarm in response to the alarm signal. The detected change in orientation is produced by an uninterrupted list of the boat in any direction for the required one-quarter to one second period. Also provided is an auxiliary timer that prevents the generation of the alarm in response to changes in the sensor's orientation that occur at less than a predetermined rate. Finally, a limit mechanism insures the generation of an alarm when such a condition reaches an extent that threatens swamping of the boat.

Abstract: Disclosed is apparatus for keeping a vehicle operator awake by means of an audible alarm or signal responsive to a nodding or tilting forward movement of the head of the operator of the vehicle. The apparatus includes a switch mounted on a hat, ear hook or head band, worn by the vehicle operator and which switch is closed upon the tilting forward of the operator's head to complete an electrical circuit providing power from a battery to an alarm. The battery and alarm may be enclosed in a casing which may be clipped to the operator's wearing apparel, or mounted on the dash board of a vehicle and a flexible electrical line interconnects the hat, head band or ear hook and the casing or dash board to permit freedom of operator movement; also, an electrical connector may be provided on the flexible electrical line to permit the hat, head band or ear hook and casing or dashboard to be electrically and mechanically disconnected.

Abstract: A fire alarm and protection enclosure in the form of a booth or box having means therein for signalling an alarm to a fire station and/or police station. The enclosure includes a door and a treadle upon which a person must stand and close the door which is then automatically locked upon actuating the alarm, which door remains locked to detain the person setting off the alarm for a predetermined period. Electrical interlock circuitry interconnected with the door, the treadle and the door lock renders the apparatus fool-proof or tamperproof so that false alarms are prevented.

Abstract: An alarm device for use in a vehicle which utilizes an audio frequency oscillator to drive a buzzer or tone device audible to the occupants of the vehicle. The alarm includes a control circuit which automatically stops the alarm after a preselected interval and may include modulated or interrupted alarm.

Abstract: A traffic signal housing particularly suitable for moulding modular units frm engineering thermoplastics. The back body portion is generally cylindrical; each end portion of the cylinder is reinforced with radial webbing connecting to a coaxial inner cylinder, thus forming a stiff load transfer structure extending into the housing to a depth of about 10 percent. The peripheral edges of a one load transfer structure are shaped to mate and seal with those of an adjacent unit. Units are coupled with a pipe bolt passing through adjacent inner cylinders to place the reinforced ends under compression. Thus assembled units have a great rigidity and load may be transmitted without the undue flexing or cracking common in prior known units.

Abstract: Apparatus for use in establishing a security system having a tour route which is followed by a guard, and having a plurality of tour stations spaced along the tour route. An electronic tour key is carried by the guard to each of the tour stations on the tour route for plug-in electrical connection therewith. Address codes are set in the tour stations and the electronic tour key for identifying a specified tour route and specific stations along the tour route. A tour information signal is generated by the electronic tour key after plug-in electrical connections have been made with a predetermined number of tour stations. The tour information signal is connected to a means for receiving such signals and for transmitting security information to a remote monitoring station. Programming and verifying means are provided for setting predetermined tour station address codes and for subsequently verifying tour station address codes and address codes which have been preset in the electronic tour key.

Abstract: Apparatus for monitoring and indicating parameter conditions within a system. Signals are generated by sensors which monitor parameter state. The signals are sensed via a multiplexing scheme, each signal being compared to an individually programmed reference. Should a parameter signal exceed the reference, a corresponding indicator is activated. Each parameter is prioritized such that a parameter signal which exceeds its reference will cause the multiplex network to sequentially sense only that parameter and all other parameters of a higher priority. Further refinements allow the readout of the value of a parameter signal if the parameter exceeds its reference or if such readout is manually selected.

Abstract: A programmed control unit is provided which is capable of controlling one or more pieces of electrical equipment, and of turning such equipment on and off automatically at pre-established times which may change from day-to-day. The programmed control unit of the invention includes, for example, one or more program storage members which control the electrical switching of one or more associated pieces of equipment on an independent basis, and in accordance with a program which may extend, for example, from day-to-day, for a month or more.