Bizarre Patents
An enclosure for small animals which is wearable on the front or back of an animate being.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7288940 | Galvanically isolated signal conditioning system A galvanically isolated signal conditioning system includes a signal conditioning circuit on an integrated circuit chip; a flying capacitor; and a galvanically isolating MEMS switching device on an integrated circuit chip for selectively switching the flying capacit... | 10/30/2007 |
| 7265555 | Loop impedance meter A loop impedance meter is provided for testing an AC electrical main supply incorporating a residual current device. The loop impedance meter includes an electrical control circuit for connecting a load resistance intermittently between the AC main supply terminal a... | 09/04/2007 |
| 7199595 | Fluid quality control using broad spectrum impedance spectroscopy A system and method for monitoring and controlling the properties of fluids is disclosed. The inventive concept employs impedance spectroscopy (IS) measurements, and is suitable for real-time, in situ, monitoring and quality control operations, such as quality contr... | 04/03/2007 |
| 7175006 | Apparatus and method for sensing disc brake actuator position For an air-operated disc brake there is provided an internal brake actuator stroke indicator which provides an indication, readily ascertained from outside the brake caliper, of the amount of actuator stroke remaining in a disc brake apparatus before a remaining ava... | 02/13/2007 |
| 7170296 | Loop impedance meter A loop impedance meter for testing an A.C. electrical mains supply, including an electronic control circuit for connecting a load resistance intermittently between the A.C. mains supply terminal and the earth terminal to measure the potential difference between thos... | 01/30/2007 |
| 7127372 | Retro-regression residual remediation for spectral/signal identification An improved regression-based qualitative analysis algorithm useful when the mixture to be analyzed contains a compound not in the library spectra, a so-called unknown. A regression of a measured spectrum is computed against the library spectra. This regression is re... | 10/24/2006 |
| 7091725 | Fast, high-resolution, indirect measurement of a physical value A measurement method or system for measuring a physical value comprises, during a same clock cycle, forming an input signal, a reference signal and an offset signal, the input signal including a parasitic value and a useful measurement value. A relationship between ... | 08/15/2006 |
| 7075464 | Circuit for current measurement and current monitoring A circuit for current measurement and current monitoring in a motor vehicle is provided, with a measuring circuit with a first subtractor circuit, connected to a measuring resistor; an offset circuit, which is connected to the first subtractor circuit in such a way ... | 07/11/2006 |
| 7049831 | Fluid quality control using broad spectrum impedance spectroscopy A system and method for monitoring and controlling the properties of fluids is disclosed. The inventive concept employs impedance spectroscopy (IS) measurements, and is suitable for real-time, in situ, monitoring and quality control operations, such as quality contr... | 05/23/2006 |
| 7009355 | Wiper control system for a vehicle and a method thereof A wiper control system is provided which comprises a rain droplet detector, a multiplexer, a count register, and a wiper control unit. The rain droplet detector has a plurality of switches that are configured to be electrically connected by rain droplets, and each s... | 03/07/2006 |
| 7002925 | Method and system for computer network link with undefined termination condition The location of a termination in a properly terminated LAN can be remotely detected. The cable's skin effect produces a detectable signature at the sending-end when a step function, for example, reaches the termination. Accordingly, a network analysis device is conn... | 02/21/2006 |
| 6987393 | Ultra-wide band pulse dispersion spectrometry method and apparatus providing multi-component composition analysis Apparatus and methods of obtaining information concerning a substance (57) is provided by applying pulses (91, 92, 93) of electromagnetic energy to the substance (57) and evaluating the response of the substance to the electromagnetic energy. Th... | 01/17/2006 |
| 6946967 | Protective device for an electric motor with sensor and evaluation unit A protective device includes a signal input intended for connection to a sensor, a signal output intended for connection to an evaluation unit, and an isolation element for galvanically separating the signal input from the signal output. The provision of the protect... | 09/20/2005 |
| 6847267 | Methods for transmitting a waveform having a controllable attenuation and propagation velocity Systems and methods are described for transmitting a waveform having a controllable attenuation and propagation velocity. An exemplary method comprises: generating an exponential waveform, the exponential waveform (a) being characterized by the equation Vin | 01/25/2005 |
| 6823275 | Fault tolerant apparatus and method for determining a revolution rate of a gear An apparatus comprises an edge detector, a memory and a pulse-input engine. The edge detector is configured to receive an input signal and a counter signal. The edge detector is further configured to send a set of time values based on the input signal and the counte... | 11/23/2004 |
| 6711513 | Fault tolerant apparatus and method for determining a revolution rate of a gear A measurement system and method for determining a revolution rate of a rotating gear is described. Such a rotating gear can be, for example, a turbine or compressor. The described measurement system and method, for example, can perform highly accurate measurements a... | 03/23/2004 |
| 6441695 | Methods for transmitting a waveform having a controllable attenuation and propagation velocity Methods for driving a lossy transmission media with an energy wave defined by a an exponential waveform function. The propagation delay and attenuation of the wave is a function of an exponential coefficient, and its propagation velocity is essentially co... | 08/27/2002 |
| 6271668 | Testing electrical installations A main circuit loop tester includes a wave form generator for producing a current pulse in the form of a narrow spike. The wave form generator is connected to a power stage for producing a high amplitude output. The loop tester also includes a high freque... | 08/07/2001 |
| 6233613 | High impedance probe for monitoring fast ethernet LAN links A high impedance tap for monitoring traffic over a communication link of a fast Ethernet local area network (LAN). The circuit of the present invention is advantageously used for tapping into a fast Ethernet communication link (e.g., bi-directional commun... | 05/15/2001 |
| 5959457 | Circuit arrangement for measuring the resistance of a resistance sensor In a circuit arrangement for measuring the resistance of a resistance sensor, for instance a wetness sensor, which is connected to an evaluation circuit, there is a galvanic separation, formed preferably by an isolating transformer, between the resistance... | 09/28/1999 |
| 5861758 | Process and system for the operation of a resistive moisture sensor A process and a system for the operation of a resistive moisture sensor, in particular on the windshield of a motor vehicle, wherein the conductivity of the moisture sensor is measured shortly after a sudden change in a signal fed to the moisture sensor a... | 01/19/1999 |
| 5598098 | Electronic battery tester with very high noise immunity A cell/battery is excited by a time-varying signal that is characterized by periodically making step transitions between discrete levels. The immediate change in a responsive signal is determined by a circuit that is only enabled during a brief "window" o... | 01/28/1997 |
| 5532983 | Circuit design for point-to-point chip for high speed testing A test assembly for testing integrated circuits. The assembly includes a test chip that is located between the integrated circuit (IC) and a tester. The test chip has a very low input capacitance that approximates an open circuit, and has an impedance tha... | 07/02/1996 |
| 5406208 | Method and apparatus for eliminating chips in a chip detection circuit and for determining chip size A chip detector is an open circuit device that attract metal chips circulating throughout a piece of equipment such as a transmission. If a chip closes the circuit in the chip detector, then it is subjected to a first pulse of energy in an attempt to burn... | 04/11/1995 |
| 5352975 | Corpuscle-detecting apparatus having sensitivity adjustment An apparatus for detecting corpuscles such as blood cells. The apparatus has an aperture and a constant-current source that supplies an electrical current to the aperture for detection of corpuscles. When corpuscles to be investigated pass through the ape... | 10/04/1994 |
| 5270663 | Apparatus for detecting a liquid mixing ratio A liquid mixing ratio detecting apparatus is designed so that an oscillation voltage generated by an oscillation unit is applied to one of a differentiating circuit and an integrating circuit, which is constituted by a combination of a capacitor composed ... | 12/14/1993 |
| 5218312 | Measurement apparatus for measuring a biological substance within a fluid substrate A method and apparatus for performing an enzyme-linked immuno sorbent assay of a biological substance in a fluid substrate wherein an enzyme conjugate is used to react with the biological substance to cause the release of ions into the substrate. The chan... | 06/08/1993 |
| 5159761 | Electronic level indicator An electronic level indicator, having a housing including at least one planar surface, at least one gravity responsive sensor mounted on the housing, the sensor constituting at least a part of two branches of an electronic bridge circuit, a pulse generato... | 11/03/1992 |
| 5066140 | Temperature measurement Temperature measurement with thermocouples is made more accurate, and the cost of disposable thermocouples is reduced by locating the cold junction close to the hot junction, utilizing a thermistor in thermal communication with the cold junction in develo... | 11/19/1991 |
| 5063353 | Method for accurate measurement of transmission line impedance by correcting gross impedance for the "dribble-up" effect A method for measuring the impedance of a transmission line. The length and D.C. loop resistance of the line are measured. A pulse is transmitted along the line, the pulse having a duration greater than the time required for it to propogate from its sourc... | 11/05/1991 |
| 5057783 | Automatic impedance matching Apparatus (1) for performing an electrical test on a cable (3) used in local area networks (LAN's). A source (37) produces electrical signals transmitted through the cable. A resistance circuit (43) is interposed between the source and the cable. The amou... | 10/15/1991 |
| 5027522 | Electronic level indicator An electronic level indicator, having a housing including at least one planar surface, a gravity responsive sensor mounted on the housing, the sensor constituting at least a part of two branches of an electronic bridge circuit, a pulse generator coupled t... | 07/02/1991 |
| 5019781 | Source level control for impedance meter An impedance meter with improved measurement accuracy obtained by controlling the level of the signal source. The impedance meter comprises a signal source, feedback amplifier, synchronous detector, A/D and control logic. The source level is maintaind by ... | 05/28/1991 |
| 4825148 | Resistance measurement circuit and method An impedance measurement circuit and method is disclosed that uses a differential amplifier to amplify a DC voltage value developed across a device being measured. The device is biased between potentials of a source of electrical energy by first and secon... | 04/25/1989 |
| 4810950 | Load resistance measuring technique The resistance of an inductive load is measured by connecting an inductor to the load and applying a pulse of energy to the load and the inductor. The voltage across the inductor is monitored and the load voltage and current are measured when the inductor... | 03/07/1989 |
| 4808914 | Resistance measuring ohms converter circuit employing a constant current source An ohms converter circuit for measuring the resistance of an unknown resistor Rx which monitors the actual output current of the current source employed therein to ensure its accuracy. The ohms converter circuit employs a highly stable current source whic... | 02/28/1989 |
| 4577086 | Monitoring in-service resistance of AC conductors A method and apparatus of monitoring the resistance characteristics of a circuit carrying an alternating current or a current having an alternating component is described. The apparatus includes first integration or averaging means for integrating or aver... | 03/18/1986 |
| 4558595 | Capacitance monitoring bridge circuit for an enthalpy responsive device An enthalpy control circuit has a humidity responsive capacitive element in one leg of a bridge circuit and a temperature responsive resistance element in another leg. The circuit is powered by a pulsating DC voltage of 1 kilohertz frequency for providing... | 12/17/1985 |
| 4347503 | Bedwetting detection device An improved bedwetting detection device is responsive to moisture in the bed of the user to create an alarm when bedwetting occurs. The device includes controlling circuitry connected to metallic conductors (12, 14) installed in the bed of the user. The c... | 08/31/1982 |
| 4316187 | Current rating verification system Method and apparatus for verifying the load rating of an active alternating current distribution circuit at a power outlet. The load rating of the distribution circuit is verified by measuring the change in line voltage at the power outlet as different lo... | 02/16/1982 |
