Abstract: An inertial switch device, for installation in an electrical circuit of an automotive vehicle, to signal excessive rates of acceleration, deceleration and turning for the purpose of preventing abusive driving which wastes gasoline. The switch device comprises a housing having a closed chamber with a concave bottom surface containing a globule or drop of mercury and a plurality of circular contacts supported therein so that the drop of mercury successively contacts them when a momentum force causes the drop of mercury to climb a side of the dish. The circular contacts are of increasingly larger diameter as the drop climbs the side of the dish with increasing inertia and are arranged in circuit-closing relation to a warning signal device, either audible or visible.

Abstract: An electromagnetic system is provided to monitor the activity of a ferrous debris detector of the type which uses electric discharges to automatically disintegrate magnetically concentrated accumulations of micron sized wear particles in hydraulic systems. The data provided are used to detect instances of abnormal wear as shown by either an unusually large number of such discharges or an excessive rate of discharge. Where such abnormality occurs the monitor will provide an audiovisual alarm to warn of the problem in time to prevent catastrophic failure of the system.

Abstract: A circuit for inhibiting the operation of an engine after the engine has functioned for a specific period of time. The circuit basically includes a timing network, a concealed switch, a timing disable network, an audible alarm, and relay. When the engine is started by an unauthorized operator, who is unaware of the concealed switch, the engine will operate in the normal manner upon closure of the ignition switch. Closure of the ignition switch applies battery power to the timing circuit which starts to "time out". Subsequently, when the timing circuit "times out", battery current flows through the relay coil, its contacts close to thereby connect a capacitor across the ignition points of the engine. The engine is thereby disabled after the vehicle has travelled a relatively short distance.

Abstract: A voltage generator which provides the biasing voltage to a telemetry transmitter positioned inside the tire of a moving vehicle is disclosed. The entire transmitting system, including the antenna, is self-contained within the pneumatic tire; and, accordingly, there is no need for connecting wires of any nature to be extended outside the tire containing the invention. The invention utilizes one of several available types of voltage generators to generate a voltage in response to the rotation of the tire as the vehicle moves within a coil. As is known, as a tire rotates along a road, the tire deflects and flattens along the area which contacts the road. The transducer used in the invention generates a voltage in response to this tire deflection. The voltage thus generated are processed and utilized to provide the biasing voltage for a transmitter.

Abstract: To an odometer which has two parallel shafts, one being fitted with a plurality of distance-indicating wheels, while the other is fitted with a plurality of carry pinions which actuate said distance-indicating wheels, is fitted an alarm device, which comprises a means for triggering, which rotates together with one of said carry pinions, and an alarm switch, which is actuated by said means for triggering when it reaches a certain predetermined position during its movement together with its carrying pinion.

Abstract: A tire inner pressure drop alarming device comprises an oscillation section mounted on a vehicle body in the vicinity of a vehicle wheel, a resonance section mounted on a peripheral portion of a tire and including a resonance coil, a signal processing and alarming section mounted on the vehicle body in spaced relation with the vehicle wheel, and a coaxial cable connecting the oscillation section and the signal processing and alarming section. The resonance coil has a major length measured in the direction of rotation and longer than a minor length of the resonance coil in a direction perpendicular to the direction of rotation. The ratio of the minor length to the major length ranges from 0.2 to 1.0.

Abstract: An alarm system is provided for detecting a seismic tremor and for generating an audio and/or visual alarm signal which varies depending upon the magnitude of the seismic tremor. In the preferred form of the invention, the alarm system comprises a free running oscillator having a pair of terminals the capacitive value across which controls the frequency of the oscillator. A fixed oscillator plate is electrically connected to one terminal while a variable position oscillator plate is electrically connected to the other terminal and has an inertial mass secured to it. A spring positioned between the plates urges the variable position capacitor plate away from the fixed plate but still enables the variable position capacitor plate to move in response to a seismic tremor thus varying the capacitive value between the terminals and the frequency of the oscillator. The output from the oscillator is coupled through a phase locked loop circuit which tracks the oscillator output.

Abstract: A combine performance monitor includes a programmed, special purpose computer coupled to a plurality of sensors for detecting a plurality of different operating conditions in a combine. The special purpose computer cooperates with operator accessible controls for calculating a plurality of predetermined performance parameters of the combine in accordance with signals from the sensors. The computer is further responsive to actuation of the controls by the operator for modifying the program so as to customize the combine performance monitor for operation with any combine selected, for operation with the particular sensors utilized in that combine selected and for operation of the selected sensors and combine in harvesting a particular grain.

Abstract: An integrated circuit including a Hall element and a threshold detector is encased in a plastic housing with the plane of the Hall element parallel with a face of the housing, providing a two-state Hall element proximity sensor. A light emitting diode (L.E.D.) is mounted in the housing and is connected to the output of the detector, providing visual indication of the state of the sensor. A kit includes the sensor and a compatible magnet to provide to users of little skill, proximity sensor parts that are easily assembled and made immediately effective in use.

Abstract: The present invention is related to intrusion sensors for alarm systems which employ Doppler detection. The transmitter of this invention transmits pulse modulated signals having a pulse repetition frequency greater than twice the highest Doppler frequency to be detected. In a manner similar to the well known sampling theorem, the received reflected pulses contain all the Doppler information contained in a similar continuous oscillation Doppler detection system because the highest Doppler frequency to be detected can be reconstituted from the received reflected signals. The duty cycle of the transmitted pulses is limited by the above described pulse repetition frequency limitation and a further requirement that the pulse length be sufficient to enable return of the leading edge of the pulse prior to the end of the pulse.

Abstract: An alarm system signals an attempt at intrusion through an opening framed to receive first and second panel members movable between opening and closing positions, as specifically shown in the form of a sliding glass door and screen door combination. An electrical switch mounted upon one panel has an element responsive to a magnetic field for developing a signal. A magnet mounted upon the other panel is productive of a magnetic field that interacts with the element of the switch upon movement of both the first and second panels to their closed positions. A signaling device coupled to the switch yields an alarm indication upon the beginning of the movement of either one of the panel members away from its closed position.

Abstract: A circuit for disabling a vehicle engine comprises a relay having a winding and four sets of contacts. One end of the relay winding is connected to a power terminal for connection to the vehicle ungrounded battery terminal potential. The other end of the winding is coupled to a first terminal for receiving an alarm output signal by a first diode and to ground potential through a holding set of contacts on the relay and a normally closed reset switch. A second terminal for connection to a horn relay is coupled to the first terminal by a second diode poled opposite to the first diode. A first common terminal and second output terminal are intercoupled by relay contacts for establishing a normally closed path therebetween. A third output terminal is intercoupled by the relay contacts for establishing a normally open path between the first and third terminals.

Abstract: A running or driving data central display arrangement for motor vehicles and the like in which a plurality of indications, (for example, an abnormal operating state or trouble warning display, a response display for providing information readouts according to call instructions entered by a driver, and a time display), are centralized into a single display portion for enabling a reduction in the mounting space required for the display unit and also enabling the easy facilitation of reading the indications provided by the display unit.

Abstract: A dual signature perimeter detection system utilizing an elongated solenoid ype transducer having a ferromagnetic core as a line sensor is buried in the ground around an area to be protected against intrusion. One end of the transducer is impressed with constant frequency oscillator signals from a signal generator, while a resistance load impedance is connected across the other end of the transducer at the input side of an amplifier used to pass amplified signals selectively to the inputs of either a bandpass type filter or an A.M. detector, or to both simultaneously, then to their related alarms. The line sensor is sensitive to both magnetic and strain stimuli, but the system hereof, which utilizes dual alarm devices, not only provides for determining the type of stimulus creating the signals, but also improves the sensitivity and response uniformity of the transducer.

Abstract: A system for alerting drivers of vehicles which have an overall height too great to clear an overhead obstruction in their path. Respective pairs of cooperating light sources and light sensors are spaced at appropriate distances from each other and in advance of the overhead structure, with the light beam from each light source being directed to the corresponding light sensor with which such light source is paired. The respective light beams are momentarily interrupted or broken as a vehicle having an excessive overall height passes the successive pairs of light sources and light sensors. When the light beams have been broken in sequence and within a preset, given time period, a signal is sent to the control station which in turn activates a visible, flashing, electric sign indicating that the approaching vehicle is too high to clear the obstruction and warning the driver of the vehicle to stop or exit from the thoroughfare.

Abstract: An apparatus for providing a service reminder when a vehicle has accumulated a predetermined mileage comprises a potentiometer operated by the highest order number wheel of the vehicle odometer to provide an output voltage which changes incrementally with each indexing motion of that number wheel. An electrical detector responsive to the potentiometer output energizes a signal lamp when the output reaches a voltage in a predetermined range representing a desired service interval. An electrical connector in circuit with the potentiometer can be disconnected to change the potentiometer voltage to a value outside the predetermined range to allow the service reminder circuit to turn off the indicator lamp when the indicated service has been performed. The apparatus is adapted to operate in conjunction with an electronic engine control module which can be programmed to detect the predetermined value of the potentiometer output and to operate a signal lamp.

Abstract: An overload indication device for a lever hoist comprises an operating lever consisting of a main lever and a handle having one end pivoted to the main lever, a spring for normally holding the handle in an aligned position with the main lever, a magnification lever for deforming the spring by the rocking movement of the handle by a force corresponding to an overloading and a warning device for warning of the overloading, such as a buzzer, whistle or colored indicator adapted to be operated when the handle rocks to assume an angular position relative to the main lever.

Abstract: A tire puncture detecting device having a pressure chamber defined by a flexible diaphragm and held in communication with the interior of the tire, an atmospheric chamber communicating with the atmosphere, and a spring plate member disposed in the pressure chamber and supporting on the front face thereof a magnet and on the rear face thereof a central portion of the flexible diaphragm. The spring plate member is normally maintained in a retracted position under the air pressure in the pressure chamber against the bias of a resilient member disposed rearwardly of the spring plate member. When a reduction in the air pressure in the pressure chamber exceeds a predetermined degree, the spring plate member buckles so as to quickly project forwardly under the force of the resilient member. In this manner, the magnet supported on the spring plate member is moved closer to an alarm circuit switch located in front of the device and energizable by magnetic force, thereby actuating the switch.

Abstract: An aircraft low tire pressure sensing and cockpit display and warning system utilizing axle wheel pair comparator circuitry to provide signals representative of pressures of the axle wheel pair less than a predetermined value, e.g. 15 percent less than a preset value determined by tire requirements or a difference between axle wheel pair pressures greater than a given value, e.g. 25 psi. In the event of tire master warning lamp illumination on the flight deck warning display, further push button interrogation and identification of the axle pair causing the warning can be made by a crew member on the flight deck warning display.

Abstract: A signalling device for use in combination with a door so as to signal when the door is attempted to be opened as by inward pivotal motion with respect to the frame in which such door is supported. Normally the alarm is an audible one such as a horn or siren, and in this manner, attempts to open the door are brought to the attention of those inside the structure. The device functions as a dead bolt lock and the signal aspect of the device may be overridden by a key-operated deactivation assembly. Generally the device operates by means of a transversely slidable bolt which may have electrical contact on the inner surface thereof for engagement with a contact on the inside of the door or housing attached thereto. Other contact locations are also contemplated. The bolt may be spring biased away from the door or housing contact and an appropriate electrical circuit is closed and the signal activated upon door movement as by attempted entry.