Bizarre Patents
Vehicular Impact Signaling Device
An apparatus for the deployment of a visible plume to alert other motorists that a proximate motor vehicle has been involved in a collision.
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| Number | Title | Issue Date |
| 4733391 | Communication networks Communication networks, specifically network topologies and apparatus therefor suitable for data communication between computers, tend to be of three main types--those with a star topology (the older sort), those with a bus topology, and those with a ring... | 03/22/1988 |
| 4677405 | Feeds for transmission lines Apparatus and method for transmitting microwave energy to or from a coaxial cable transmission line. A conductive ring is positioned between and spaced from the inner and outer conductors. The ring has two diametrically opposed conductive stubs extending ... | 06/30/1987 |
| 4651131 | Apparatus for converting an analogue input signal of narrow bandwidth to digital form A narrow band signal is converted into digital form using an analogue to digital converter of relatively small capacity. The input signal is compared with a prediction of it based on previous cycles of the incoming waveform. This produces an error signal ... | 03/17/1987 |
| 4647784 | Vehicle guidance and control system A vehicle guidance and control system has a number of trucks whose movement is controlled by a base station. Each truck periodically fixes its own position in relation to marker boards consisting of patterns of reflective coded stripes by scanning a narro... | 03/03/1987 |
| 4392121 | Receiver for A.C. electrical supply signalling arrangement A receiver for an a.c. electrical supply signalling arrangement of the kind in which information is transmitted by impressing on the supply voltage waveform voltage reductions which bridge the zero crossings in the waveform wherein detection by the receiv... | 07/05/1983 |
| 4390835 | Fault identification in electric power transmission systems A method of identifying faults in a polyphase alternating current electric power transmission system wherein determination of the type of fault occurring is effected by monitoring, using analogue techniques, the instantaneous values of quantities derived ... | 06/28/1983 |
| 4383324 | Digital data transmission systems In a receiver arrangement for a quadrature phase-shift digital data transmission system including an adaptive equalizing regenerator, a phase control signal for the local oscillator is derived from an output of the regenerator and decision feedback signal... | 05/10/1983 |
| 4381214 | Process for growing crystals According to this invention a process for forming a crystal of a substance comprises securing surfaces of two crystals (1) together with the axes of the crystals aligned and depositing said substance onto the joined crystals thereby causing them to grow i... | 04/26/1983 |
| 4370691 | Protection apparatus for electric power transmission systems In a protection apparatus for a feeder (H) of an electric power transmission system compensation for mutual coupling between the feeder and another feeder (G) is controlled in dependence on the ratio of the zero sequence currents (IM, IN | 01/25/1983 |
| 4352137 | Methods and apparatus for fault detection This invention relates to methods and apparatus for detecting the occurrence of a fault on a conductor or transmission line and for protecting the conductor or line in accordance with the determination of fault. The instantaneous value of the voltage (V) ... | 09/28/1982 |
| 4352043 | Cathodoluminescent light sources and electric lighting arrangements including such sources A cathodoluminescent lamp for use for general lighting service includes an anode constituted by an electrically conducting coating, which may be partly internally reflective, on the interior surface of the bulb wall, a phosphor coating over the whole of t... | 09/28/1982 |
| 4346448 | Generation of electric signals having approximately sinusoidal waveforms For the purpose of generating an output signal having a sinusoidal waveform, a digital store stores at different locations binary-coded amplitudes at equally spaced instants of time throughout a complete cycle of a sine wave. Those locations are addressed... | 08/24/1982 |
| 4340865 | Electric amplifier circuits that respond to an input signal of either polarity to produce an output signal having a polarity corresponding to that of the input signal An electric amplifier adapted to respond to an input signal of either polarity comprising a first differential amplifier OP1 which is arranged to drive through a load L a current whose value varies with the input but is independent of the load value and a... | 07/20/1982 |
| 4339715 | Carrier-domain magnetometers with compensation responsive to variations in operating conditions A carrier-domain magnetometer (20) incorporating compensation for changes in its domain rotation frequency/magnetic flux density characteristic due to changes in operating conditions, e.g. electric bias and/or ambient temperature conditions, and/or due to... | 07/13/1982 |
| 4339740 | Thermally responsive switches A thermally responsive electric switch including two dimensionally identical, bimetallic, snap-over, part-spherical, thermally responsive actuating elements 9, 11, arranged in a nesting, contacting relationship within the end portion 7 of a housing. The f... | 07/13/1982 |
| 4335501 | Manufacture of monolithic LED arrays for electroluminescent display devices In the manufacture of a monolithic LED array, in particular a matrix array, in which portions of the array are electrically isolated from one another by channels cut or etched through the slice of n-type material, the channels are formed in two stages, re... | 06/22/1982 |
| 4327256 | Telephone system An electronic key telephone system in which three or more key telephone instruments are interconnected or connected to an exchange line, as required, by way of a central control unit, each instrument being connected to the central unit by means of two spe... | 04/27/1982 |
| 4322785 | Transistor switching circuit A driving circuit for a power transistor switch in which a feedback transformer between the collector path of the power transistor and that of the driver transistor is used to provide a current drive to the power transistor that is proportional to the loa... | 03/30/1982 |
| 4321647 | Overcurrent relays A time relay comprising a device (1) arranged to produce an output (F) having a frequency representative of a parameter (I) to be monitored, a comparator (5) responsive to the output (F) for producing an output (IN) when the value of the monitored paramet... | 03/23/1982 |
| 4306190 | Plural frequency signal generator For the purpose of generating oscillations having a plurality of different frequencies, a read-only memory stores a plurality of binary words which are read cyclically. The individual pulse signals supplied by the read-only memory, each such signal repres... | 12/15/1981 |
| 4302726 | Current sources A current source in which the output current from an output amplifier stage (2) is controlled by an input signal, originating in a signal source (11), to an input amplifier stage (1) incorporates, additionally to a negative feedback path from the current ... | 11/24/1981 |
| 4301408 | Electrical measuring apparatus employing magneto-electric devices An electrical measuring apparatus comprising a current domain magnetometer (C.D.M.) (1) and summation means (2) for summing the output pulses from the C.D.M., the sum of the summation means representing the integral of a predetermined function of the volt... | 11/17/1981 |
| 4298903 | Electronic component cooling arrangements An arrangement for cooling electronic components mounted on a card (41) wherein the card is carried in a heat conductive frame (17) which is urged by spring bias means (25) along a guide arrangement (21) provided in an open ended structure (13) so that th... | 11/03/1981 |
| 4289930 | Electronic apparatus for the display of information received over a line Apparatus for connection over a telephone line to a remote data bank has provision for displaying a `page` of information received in digital form from the data bank in response to a request for that page being signalled by the apparatus to the data bank ... | 09/15/1981 |
| 4280273 | Manufacture of monolithic LED arrays for electroluminescent display devices In the manufacture of a monolithic LED array, in particular a matrix array, in which portions of the array are electrically isolated from one another by channels cut or etched through the slice of n-type material, the channels are filled with a glass frit... | 07/28/1981 |
| 4262297 | Semiconductor charge transfer device with multi-level polysilicon electrode and bus-line structure A semiconductor charge transfer device, e.g. a CCD area imaging array, having a multi-level polysilicon gate structure (20-22, 24, 25, 26) the geometry of the bus-line portions (24, 25, 26) of which are such that each bus-line has relatively large area re... | 04/14/1981 |
| 4254403 | Systems for transmitting information in an alternating current electricity supply system A system for transmitting information in an alternating current supply system wherein information is transmitted by reducing the instantaneous value of the supply voltage during a corresponding period in each of a selection of cycles of the supply voltage... | 03/03/1981 |
| 4250518 | Magnetic field sensor semiconductor devices A semiconductor device incorporates a p-n-p-n structure of circular geometry, within which there may be formed a carrier domain which will rotate around the structure when an appropriate magnetic field is applied. The four regions of this structure are al... | 02/10/1981 |
| 4234956 | Digital relay systems In a digital relay system, a standby channel is arranged to replace any one of five main channels. The standby channel contains a variable delay, and the data from the main channel to be replaced is passed along the standby channel prior to the changeover... | 11/18/1980 |
| 4232243 | High pressure electric discharge lamp In a high pressure electric discharge lamp having tungsten electrodes and a discharge envelope filling of mercury, rare gas, and metal halides, activator material consisting essentially of scandium oxide is incorporated in the electrodes, in the form of a... | 11/04/1980 |
| 4227118 | Circuits for operating electric discharge lamps An electric discharge lamp circuit arrangement wherein rapid starting of the lamp is obtained by charging a ballast impedance capacitance via a unidirectional current conducting path in a sense such as to breakdown a voltage breakdown device in the contro... | 10/07/1980 |
| 4210850 | Circuits for operating electric discharge lamps A circuit for operating an electric discharge lamp from an a.c. supply wherein a burst of high voltage pulses for starting the lamp is generated during each cycle or half cycle of the supply by rapidly turning on and off an electronic switch, e.g. a triac... | 07/01/1980 |
| 4196388 | Apparatus for monitoring high alternating voltages A capacitor divider type high alternating voltage monitoring apparatus incorporating a filter with a switchable gain/frequency characteristic for removing the effect of d.c. voltage error arising from trapped charge on the capacitor divider.... | 04/01/1980 |
| 4179641 | Circuits for operating discharge lamps An electrical circuit for operating an electrical discharge lamp has a pair of terminals for connection to a supply of voltage of substantially sinusoidal waveform, a second pair of terminals for connection with a discharge lamp, a ballast impedance conne... | 12/18/1979 |
| 4161728 | Electronic display apparatus In a television receiver there are provided means for decoding and displaying data received in coded form either on a television carrier signal during field blanking periods or over a telephone line, the decoding means and the display means being intercon... | 07/17/1979 |
| 4130851 | Directional relays A directional relay for a polyphase electric power transmission system wherein the direction of a fault from the relaying point is determined by determining the sense of the variation of the zero or negative sequence voltage of the system between the rela... | 12/19/1978 |
| 4112284 | Fall-through return spring arrangement for a push-button switch mechanism A push-button switch has a wire spring to return the push-button to its non-operated position after operation. The spring is carried by the stem on which the button is mounted and a portion of the spring bears against a fixed ramp. The ramp has first and ... | 09/05/1978 |
| 4104586 | Apparatus for indicating the sequence of alternating current signals An apparatus which indicates the sequence of a pair of alternating current input signals by determining the sense of a datum crossing in one input signal with respect to the polarity of the other input signal at the time of the datum crossing.... | 08/01/1978 |
| 4099325 | Machines for inserting electric circuit components on printed circuit boards An automatic component insertion machine in which at least some of the component holding units each comprise a plug-in key unit which electrically identifies a respective component type and which is mechanically coded so as to accept only a correspondingl... | 07/11/1978 |
| 4096524 | Television receivers A television receiver equipped for the display of data transmitted during the line flyback period and also for the display of data transmitted over the telephone via a modem is provided with circuitry for detecting the absence of the normal television syn... | 06/20/1978 |
