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Temperature sensor with internal rigid substrate
A temperature sensor is made with a rigid substrate disposed within a metallic tube for the purpose of supporting a resistive temperature detector and conductive...
Differential capacitance detector
A differential capacitance detector comprises an integrator which has a difference between a capacitance (C.sub.S) of a sensor having the capacitance...
Bi-directional actuator using a random direction AC motor
An actuator uses an AC motor assembly having a random chance of rotating in either direction upon stalling or first receiving power, to provide torque for...
A linear actuator comprising a hollow first cylindrical shaft with helical threads on its exterior surface and helical threads of opposite pitch on its interior...
Diagnostic range/position measuring device
A sensor bridge circuit (20) sensitive to a proximate target (12). The bridge circuit (20) has two inductor (24, 28) and two resistors (32, 34). One inductor...
An ignitor includes a first transistor, a transformer, an ignition member, and a switching control member. The first transistor is activated in accordance with...
Fault tolerant inertial reference system
A fault tolerant inertial reference system employs two independent inertial reference units each having its own inertial sensor array with redundant output...
Semiconductor package with a bridge for chip area connection
A semiconductor package including a base having a chip receiving portion and a surrounding portion; a bridge having conductive strips extending over the chip and...
Laser gyro life prediction
A laser gyro lifetime prediction method incorporates a memory model that stores a worst case performance parameter for a readout intensity, a laser intensity and...
Software/hardware digital signal processing (DSP) altimeter
A radar altimeter system uses a microprocessor-based subsystem to process radar signals in software. The subsystem includes a track loop and a verify loop for...
Burner controller assembly
A burner controller for safe operation of a furnace has a an electromechanical latch for holding first and second fuel valves open responsive to an enable...
Wide-viewing angle multi-domain halftone active matrix liquid crystal
display having compensating retardation
A multi-domain halftone gray scale active matrix liquid crystal display utilizing a mono-gap configuration for achieving a very wide viewing angle at a low-cost....
Piezoresistive silicon pressure sensor manufacture implementing long
diaphragms with large aspect ratios
A form pressure sensor diaphragm and method of making that allows for formation of long rectangular plate structures in semiconducting materials, especially...
PH measurement utilizing a light source
The pH of a material containing lignin is determined by directing an ultraviolet light at the material. One of the characteristics of lignin is giving off a...
Circuit and method for measuring current in an H-bridge drive network
A circuit measures the driving and circulating current in an H-bridge drive network directly and linearly. Voltage across two current sensing resistors are input...
Method of semiautomatic ambient light sensor calibration in an automatic
A method of calibrating a dimmable lighting system having an electric lighting fixture and light sensor in an electronic controller. The method comprises a...
Electrostatically operated micromechanical capacitor
An electrostatically controlled, micromachined micromechanical capacitor having an adjustable, extensive tuning range. A configuration consists of a set of...
Producing high TC superconductor bulk composites
Uniformity of the interstitial distribution of the second phase within composite superconducting high T.sub.c ceramic compositions is achieved by infiltrating...
Magnetic sensor circuit with two magnetically sensitive devices
A magnetic sensor circuit provides current sources that create a feedback loop for an amplifier of one magnetically sensitive component in order to maintain the...
Angular position sensor having multiple magnetic circuits
A rotational position sensor, or angular position sensor, that having two pole pieces. Each of the pole pieces has a first end portion and a second end portion....
Active hand controller redundancy and architecture
A hand controller system which provides the proper feel of the hand controller during aircraft operation. In both non-redundant and redundant embodiments,...
Force sensing device having breakout tabs
A force sensing component for use with a force sensing unit includes a planar flexure member having a moveable portion separated from a fixed portion by a strain...
Compact, adaptable brouting switch
The compact brouting switch allows communication between external systems with differing or same protocols. The compact brouting switch includes switch ports...
Proximity sensor circuit with frequency changing capability
A proximity sensing circuit is provided with various attributes, including the connection of a proximity sensor coil in a feedback loop of an amplifier, the...
Method and apparatus for decoding an encoded NRZ signal
A bit serial decoder is disclosed decoding an encoded non-return to zero (NRZ) signal without the use of external clock. Transitions within the encoded NRZ...
Testing apparatus for ATC transponder FAR compliance
Airplanes have transponders which receive and transmit signals to communicate information regarding the flight of the airplane. A transponder testing apparatus...
Mounting for a bimetal coil thermometer and having an integral feature
An analog thermometer of the bimetal coil type has a rotatable hub carrying the bimetal coil. The thermometer is calibrated to indicate exact ambient temperature...
Fiber optic gyroscope source wavelength control
A pumped rare-earth fiber source wavelength control device, having source wavelength control effected by pump source wavelength and power control. The...
Differential pressure sensor with stress reducing pressure balancing
The present invention relates generally to a pressure sensor and, more specifically, to a pressure equalization structure that balances the forces on the...
Method for making diaphragm-based sensors and apparatus constructed
This patent relates to the fabrication of diaphragm-based microstructures used primarily for sensing physical phenomena by detecting a change in deflection,...
Optical dirty cell sensor for an electronic air cleaner
An electrostatic air cleaner has at least one hole in one of the plates over which air with charged dirt particles is passed. A light source is mounted adjacent...
FET having a dielectrically isolated gate connect
A HIGFET having a gate with a pad which is isolated from the FET heterostructure wafer by a dielectric layer to minimize leakage current between the gate and the...
Enthalpy based thermal comfort controller
A controller for a climate control system has a relative humidity sensor as well as a dry-bulb temperature sensor within the enclosure. The humidity value is...
Compact thermal camera
A low-cost portable handheld still-frame thermal camera for capture of calibrated digital thermographic infrared images having a lens assembly, a slideable...
Electrostatic capacity-type pressure sensor
An electrostatic capacity-type pressure sensor includes a diaphragm support body, first and second lids, a fixed electrode, a coupling member, an electrode...
Support frame assembly for a printed circuit card having a tie bar
bridging across the frame
The assembly comprises a U-shaped frame to which the card may be secured. The frame is defined by spaced parallel side elements and a connecting end element....
Switch actuating mechanism for two sequentially activated switches
A switch actuation mechanism is provided with a support structure that is shaped to hold two switches. Each switch is associated with a pivotable member that is...
Tilt switch with increased angular range of conduction and enhanced
A tilt switch is made by attaching two electrically conductive members to a nonconducting tube and disposing a conductive sphere within the switch. The first and...
Switch with diagnostic capability
A switch is provided with the ability to diagnose its own operation and provide signals that represent the actuation of the switch and various diagnostic outputs...
Angular position sensor with adjustable gain and offset signal capability
An angular position sensor is provided with a rotatable magnet and first and second ferromagnetic pole pieces. The first ends of the ferromagnetic pole pieces...
TaN/NiFe/TaN anisotropic magnetic sensor element
A stack of two refractory nitride layers and a magnetoresistive layer are used to facilitate electrical connection between components of a sensor. The stack of...
Redundant processing system architecture
Disclosed is a fault-tolerant and/or fail-safe information processing system architecture for handling information from a plurality of independent subsystems...
Cable actuated switching mechanism with mechanical snap action
capibility and broken cable monitoring capability
A cable switch actuating mechanism is provided with a shaft and a cam structure that slides on the shaft. When the associated cable is pulled to exert an axial...
Integrity monitoring method and apparatus for GPS and DGPS receivers
A fail safe GPS system for an aircraft moving along a desired trajectory within vertical and horizontal limits using first and second redundant GPS receivers a...
Portable room air purifier
Color liquid crystal display backlight system for night vision imaging
The disclosure is directed to a color liquid crystal display backlight system for daytime and nighttime use. Night vision imaging system retirements are met so...
Self adjusting switch mechanism
A self adjusting switch mechanism is provided which permits the specific location of a switch to be determined during an initial operation that moves a mounting...
SOI substrate fabrication
A back-etch silicon-on-insulator SOI process that has a silicon handle wafer with an oxide layer bonded at room temperature to a silicon device wafer with an...