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...that the first rickshaw was invented in 1869 by an American Baptist minister, the Rev. E. Jonathan Scobie, to transport his invalid wife around the streets of Yokohama?
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| Number | Title | Issue Date |
| 7362096 | Robust detection of strain with temperature correction An apparatus (10) is set forth for measuring a return signal of a magnetostrictive sensor (20) that detects a force, torque, or pressure. The return signal includes noise, a DC resistance (44), an AC resistance and an inductance and the inductan... | 04/22/2008 |
| 7271595 | Sensor detection apparatus and sensor Provided are two monitor circuits for monitoring two input signals of an input stage differential amplifier, respectively, and two monitor circuit for monitoring two output signals of the input stage differential amplifier, respectively. When failure occurs at the b... | 09/18/2007 |
| 7265560 | Temperature compensated vapor sensor A chemiresistor sensor system that compensates for changes in resistance caused by changes in ambient temperature, thereby increasing the accuracy of the sensor system's ability to detect target analytes. The sensor system generally includes a first resistor, a seco... | 09/04/2007 |
| 7235978 | Device for measuring impedance of electronic component A device measures an impedance of an electronic component with using an impedance measuring apparatus. The impedance measuring device includes first and second probes to be connected to measuring terminals of the impedance measuring apparatus, an anisotropic conduct... | 06/26/2007 |
| 7231309 | Method and apparatus for testing a bridge circuit A method and an apparatus for testing a bridge circuit. The method includes inputting a first test clock to a first conversion unit for triggering the first conversion unit to transfer a test data to a second conversion unit according to rising edges of the first te... | 06/12/2007 |
| 7219314 | Application-specific methods for testing molectronic or nanoscale devices Described are methods for implementing customer designs in programmable logic devices (PLDs). The defect tolerance of these methods makes them particularly useful with the adoption of “nanotechnology” and molecular-scale technology, or “molectronics.” Test m... | 05/15/2007 |
| 7180311 | Physical quantity sensing device with bridge circuit and zero point adjusting method A physical quantity sensing device includes a bridge circuit that has first and second input points, to which an AC voltage is applied, and first and second output points connected to a differential amplifier. The bridge circuit includes a first bridge arm for elect... | 02/20/2007 |
| 7126355 | Physical quantity sensing device with bridge circuit and temperature compensating method A physical quantity sensing device includes an AC voltage generator for generating an AC voltage and a bridge circuit that has first and second input points, to which the AC voltage is applied, and first and second output points connected to a differential amplifier... | 10/24/2006 |
| 7106215 | Device for monitoring the integrity of spacecraft thermal protection tiles An electrical circuit, attached to the tiles of the space shuttle, provides an indication of tile integrity in real time. Each tile has a resistor attached thereto between parallel conductors, and a series of tiles forms a protected grid series tile section. A compu... | 09/12/2006 |
| 7088108 | Method for detecting an offset drift in a wheatstone measuring bridge In a method for detecting an offset drift in a resistive Wheatstone measuring bridge, a switch is made between a measuring mode and a testing mode without interfering in the internal structure of the measuring bridge. In testing mode, two sensor resistors that act i... | 08/08/2006 |
| 6975312 | Computer system having network connector and method of checking connection state of network cable therefor A computer system having a network connector to which a network cable is connected, including a displaying part displaying a connection state of the network cable; a signal processing part processing a signal inputted through the network connector; and a control par... | 12/13/2005 |
| 6944937 | Method of reducing ESD damage in thin film read heads which enables measurement of gap resistance The present invention provides a method of manufacturing a magnetoresistive read head which reduces electrostatic discharge and allows measurement of gap resistances in the head. ... | 09/20/2005 |
| 6930613 | Electrical instruments circuits A device representing a simple means of multiplying the functionality of wiring in point to point control circuits such that fault tolerant, fault reporting circuits can be constructed with less wire. The circuit can employ the wiring on a continuous basis by the us... | 08/16/2005 |
| 6927080 | Structures for analyzing electromigration, and methods of using same The present invention is generally directed to various structures for analyzing electromigration, and methods of using same. In one illustrative embodiment, the method includes forming a grating structure above a semiconducting substrate, the grating structure being... | 08/09/2005 |
| 6781385 | Apparatus for detecting current direction in bridge circuits and method thereof The invention relates to an apparatus and a method for detecting a current direction in a PWM converter or an inverter having one or more upper and lower arms, each of which consists of a switching device with an anti-parallel diode. The voltage across the switching... | 08/24/2004 |
| 6677608 | Semiconductor device for detecting gate defects The present invention provides a semiconductor device for detecting gate defects and the method of using the same to detect gate defects. The semiconductor device is comprised of a semiconductor substrate having an oxide layer on the top, a gate having sp... | 01/13/2004 |
| 6657435 | Audible circuit breaker An audible test circuit has a body having a plurality of prongs extending therefrom and having a plurality of lights thereon. A four way bridge rectifier circuit has a voltage steering circuit for producing a DC output voltage of known polarity located in... | 12/02/2003 |
| 6646446 | Method and apparatus for fault detection in a resistive bridge sensor A full Wheatstone bridge sensor has conditioning electronics of an ASIC connected thereto. Two independently controlled diagnostic switches (S1, S2) in the ASIC are commonly connected to one of the bridge output nodes. The first diagnostic switch connects... | 11/11/2003 |
| 6538450 | Method and device for locating an insulation fault in an electric cable Method for locating an insulation fault (Rd) in the screen (SCR) of a cable relative to the ground, the screen being electrically accessible at least at one point of origin (Po) and at one terminal point (Pe). A current is injected between the point of or... | 03/25/2003 |
| 6456090 | Torque sensor A torque sensor includes a pair of detection coils having the impedances that change in opposite directions of each other corresponding to a torque generated in a rotation shaft. An AC voltage is applied on a bridge circuit including a pair of detection c... | 09/24/2002 |
| 6433554 | Method and apparatus for in-range fault detection of condition responsive sensor An in-range fault detection system for a full wheatstone bridge element (12) having piezoresistive elements (R1, R2, R3, R4) has bridge outputs (INP, INM) connected to measuring means in the form of a first circuit portion (13) to provide a common mode vo... | 08/13/2002 |
| 6424136 | Current indicator for fault assessments of loop circuit integrity while providing circuit isolation A current detector/indicator for DC has a transistor (1) and an LED (2). They are arranged so that current flow through the LED causes the transistor to conduct, shunting excess current away from the LED and through the transistor. For AC, the circuit can... | 07/23/2002 |
| 6313642 | Apparatus and method for testing an arcing fault detection system A system for testing an arcing fault detection system in an electrical distribution network having a line conductor carrying an electrical signal between a power source and a load, the arcing fault detection system including a sensor coupled to the line c... | 11/06/2001 |
| 6118278 | Short circuit detection in particular for a measuring bridge According to the invention, an AC-signal is superimposed to a signal on the two lines to be monitored. A signal difference between the signals on each line is compared with the superimposed AC-signal. A short circuit between the two lines to be monitored ... | 09/12/2000 |
| 5771556 | Acoustic wave device and manufacturing method A method for making an acoustic wave device. The method has steps of providing a substrate suitable for acoustic wave devices and processing the substrate to provide a patterned metallization thereon. The patterned metallization includes an acoustic wave ... | 06/30/1998 |
| 5734269 | Bridge circuit fault monitoring apparatus using an output signal level from a bridge circuit and a power source current level to determine faults A bridge circuit monitoring apparatus which can accurately detect a fault in a bridge circuit of a sensor circuit even when multiple faults occur. Changes in the imbalance output signal of a bridge circuit (11) are monitored with a first window comparator... | 03/31/1998 |
| 5508614 | Non-contact method for testing for MR shield short circuits The present invention provides a test circuit and method for testing for short circuits in an MR head, merged MR head or piggyback MR head without contacting either of the shield layers. This is accomplished by a bridge circuit which employs part of the c... | 04/16/1996 |
| 5440234 | Fault detecting circuit incorporated in semiconductor sensor and effective against any fault having influence on output voltage of a circuit component of the sensor A semiconductor sensor has piezo resistor elements formed in deformable semiconductor portions for forming a Wheatstone bridge circuit, and a fault detecting circuit is associated with the Wheatstone bridge circuit for producing a warning signal indicativ... | 08/08/1995 |
| 5382909 | Method for detecting and obtaining information about changes in variables Detection of liquid leaks and other changes in variables is disclosed. The event causes two elongate conductors to become electrically connected at a location which is determined by the event, thus creating a system in which the connection point can be lo... | 01/17/1995 |
| 5279148 | Method and apparatus for detecting and locating leaks and loose couplings in conduits for liquids A method of determining leaks and loose couplings in a pipe system which transfers liquid medium, and an apparatus for implementing that method. The pipe system includes a conduit having a beginning, an end, an inner pipe which carries the liquid medium a... | 01/18/1994 |
| 5235286 | Method for detecting and obtaining information about changers in variables An elongate sensor for detecting and locating presence of a liquid, e.g. water or a hydrocarbon. The sensor includes first and second elongate members which are spaced apart from each other and each of which is a metal conductor covered by a conductive po... | 08/10/1993 |
| 5015958 | Elongate sensors comprising conductive polymers, and methods and apparatus using such sensors Detection of events, e.g. liquid leaks and other changes in varibles. The event causes two conductors to become electrically connected, and thus creating a system in which the connection point can be located by measuring the potential drop from one end of... | 05/14/1991 |
| 4859952 | Apparatus and method for testing impedances of interconnect devices In electronic devices, such as data processing systems that operate at high frequencies, the integrity of the interconnect or coupling apparatus transferring signals between component modules is critical to prevent compromise of information being transfer... | 08/22/1989 |
| 4404464 | Method and apparatus for electrically connecting a removable article, in particular a portable electronic card The present invention relates to a process and an apparatus for connecting in particular a portable electronic card. The connector comprises in particular: means 5a and 5b for bringing the contact surfaces 1a and 3a to face one another; means 15 and 18 for dis... | 09/13/1983 |
| 4386231 | Cable assembly for detecting the ingress of water inside a cable A cable assembly for detecting the ingress of water inside a cable is disclosed. The cable assembly comprises a moisture detecting tape constructed of two parallel bare conductors laminated to an insulating substrate. The tape thus constructed is applied ... | 05/31/1983 |
| 4161688 | Cable fault locating apparatus having an earth current canceller The cable fault locating apparatus employing an inverted Murray bridge circuit having a ratio arm connected to open ends of a faulty cable and a sound return cable, a voltage source connected through a switch to both ends of the ratio arm and a galvanomet... | 07/17/1979 |
