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Resetting closed-loop magnetoresistive magnetic sensor
A switched-magnetization closed-loop magnetometer having a magnetoresistive bridge for sensing external magnetic fields. The output signal from the bridge to an...
Capacitive pressure sensor
A capacitive pressure sensor includes first and second substrates, a groove, and first and second electrodes. The first substrate consists of an electrical...
Fiber optic gyroscope refractive index induced error compensation
An error compensator for a resonator fiber optic gyroscope extracting characteristics from the output signal of a photodetector, receiving electromagnetic waves...
Sense amplifier input stage for single array memory
Sense amplifier input stage for reading the output of a single array memory having an "unknown" output, a reference "one" output and a reference "zero" output. A...
Air purifying apparatus
A ceiling mounted air purifier that provides a high velocity, multi-directional air exhaust pattern that distributes filtered air to all areas of a room which...
Rotation sensor output signal processor
Angular motion sensor signals from an inertial integrating rate sensor are provided to a translation device that provides a translated output signal that is...
Method and device for measuring the position and orientation of objects
in the presence of interfering metals
A method of measuring the position and orientation of an object is disclosed in conjunction with an apparatus to achieve this method. The method and apparatus...
Modulator for negative pulse activated oscillators
A modulator for providing modulating voltages across the anode and cathode of a negatively pulsed magnetron includes a switch which, when activated, couples the...
Position dependent rate dampening in any active hand controller
A control system for an active hand controller, for example, uses a control stick connected to and controlled by a motor. Electronics are provided to control the...
Indoor climate controller system adjusting both dry-bulb temperature and
wet-bulb or dew point temperature in...
A controller for a climate control system has a humidity (wet-bulb or dew point) temperature sensor as well as a dry-bulb temperature sensor within the...
Humidity control system
A humidity control system for a space receiving conditioned air from a duct has sensors which measure the current humidity in both the space and the duct. The...
Modulating pressure regulator with shape memory alloy actuator
An electrically controlled modulating pressure regulator in which a main valve regulates fluid flow between an inlet and an outlet in response to a control...
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...
Slotted arbitration without time jitter in a table driven protocol
A media access protocol provides a fixed frame length and limited arbitration among certain predetermined users by providing limited arbitration during certain...
Triangular dither drive apparatus for a ring laser gyroscope
Control apparatus for an RLG dither motor includes a digital phase shifter for providing a clock signal related to the RLG position signal. A rate pulse...
Asymmetrical magnetic position detector
A gear tooth sensor is provided which incorporates a magnet and two magnetically sensitive devices, such as Hall effect elements. The two magnetically sensitive...
Electronic aquastat in immersible capsule
A liquid immersible electronic aquastat in which a temperature responsive element and substantially all associated electronic circuitry are arranged on a circuit...
Method for interlock tracing for discrete devices in a process control
When an interlock trip condition occurs, a back tracing of interlock logic occurs by examining input signals to an output gate of the interlock logic to...
Beam former for matrix display
A graphics system having a beamformer operating on image data and sub-pixel or fractional address data coming from a modified image memory and graphics processor...
Serrodyne phase modulator having ramp generated by combining two
A frequency phase modulator which generates a phase modulator controlled slope voltage waveform. The controlled slope voltage waveform is controlled by coupling...
Apparatus and method for controlling the vertical profile of an aircraft
In an aircraft, there is included a Flight Management System (FMS), Autopilot and Autothrottle for controlling the aircraft. The apparatus has a plurality of...
Circumferential sealing apparatus
A cylindrical seal arrangement is provided by alternatively disposing a plurality of O-ring seals and cages in a generally cylindrical arrangement. The O-ring...
Method and apparatus for distortion free measurements
The present invention provides a method and apparatus for removing systematic distortion from measurements of an observable parameter. The method and apparatus...
Varactor diode having a stepped capacitance-voltage profile
A varactor diode having a stepped capacitance-voltage profile, formed in heterostructural integrated circuit technology. Several layers in the diode structure...
Switch with removable button frame
A switch is provided with a button frame which has two openings and two associated cam surfaces. A pivot pin can be assembled with a support structure and the...
Terrain referenced navigation--woods data base model
A terrain referenced navigation system utilizing a woods database model including a method for increasing terrain referenced navigation accuracy by compensating...
Laser path length control reset acceleration circuit
A ring laser angular rate sensor apparatus includes ring laser apparatus for generating a pair of counter-propagating laser beams about a closed-loop path where...
Switch with laminated cover
A switch housing is made with a laminated cover that comprises an inner plate, an outer plate and a metallic sheet that is disposed therebetween. The metallic...
Method and apparatus for calculating thermal sensitivity
The present invention provides a method and apparatus for calculating thermal sensitivity and predicted mean thermal sensitivity felt by a person in an...
System for making data available to an outside software package by
utilizing a data file which contains source...
A computer system, having external peripherals, includes an operating system and application packages residing therein. Data exchange logic permits an outside...
Repeated ALU in pipelined processor design
A six-stage pipeline processor comprised of the sequential stages: instruction fetch; instruction decode; first full ALU; second full ALU; Fill Register; and...
Three parameter viscous damper and isolator
A vibration isolation apparatus having a shaft with an axis therethrough. The shaft has a first and second end. A piston having an axial bore is coaxially...
Terrain referenced navigation-adaptive filter distribution
A terrain referenced navigation system utilizing a five-state kalman filter with a filter distribution based on a fixed grid approach. The five-state kalman...
Multi-coplanar capacitor for electrical connector
A multi-coplanar, multi-layer capacitor array for use as an RFI filter associated with an electrical connector module having a pattern of pin and socket...
Dither signal remover for a dithered ring laser angular rate sensor
utilizing an adaptive digital filter
Disclosed is an apparatus for removing the dither signal component from a dithered ring laser gyro output. Corresponding numerical representations of the gyro...
Turbidity sensor with analog to digital conversion capability
A turbidity sensor is provided with a light source and a plurality of light sensitive components which are disposed proximate a conduit to measure the light...
Photoelectric sensor with variable light pulse frequency
A photosensor is provided with a control circuit that is capable of varying the frequency of light pulses which energize a light source of the sensor. When four...
Dither stripper to leave base motion
Readout signals of a dithered ring laser inertial integrating rate sensor are processed by a signal combining circuit which forms part of a closed loop scheme...
System controller and remote fault annunciator with cooperative storage,
sharing, and presentation of fault data
An annunciator for the conduction status of individual switches wired into a series circuit records this status as status history at regular intervals in a...
Off-axis magnetron sputter deposition of mirrors
A magnetron sputtering apparatus can be used to achieve high quality coating on substrates if the substrates are positioned adjacent to the sputtering target....
Pressure sensor with improved heat dissipation characteristics
A pressure sensor is provided with a means for efficiently removing heat from a circuit portion of a sensor die by providing an elastomeric member between a...
Ruggedized homogeneous thin dielectric film focus sensor
A focus detecting device utilizing thin film to detect convergence or divergence of rays from a light source by directing the light rays through a pair of prisms...
Configuration control of mode coupling errors
An optical fiber rotation sensor having configurations thereof chosen with respect to the source autocorrelation. Both amplitude related and intensity related...
Photoelectric sensor with a circular polarizing lens attached to its
A photoelectric sensor is adapted for use in specific applications which require the additional attachment of a circular polarizer. A piece of circular polarizer...
A dither motor reed apparatus for use in a dither motor which includes a hub member and an outer support housing. The dither motor reed apparatus has a robust...
Valve with cylindrical metering device
A valve is provided with a throttle member that is capable of metering the flow between a bore channel of the valve and a port extending between the channel and...
Solid-block homodyne interferometer
A solid-block homodyne Doppler interferometer utilizing continuous-wave or pulse-wave light beam technology. A pulse-wave light beam version of the homodyne...
Microcontroller controlled input protection
A method and apparatus provide input protection in a system having a controller which monitors a controller terminal for at least one monitor period. The...
Microstructure gas valve control
A flow control device includes a housing with separate main flow and flow control (servo) passages between an inlet port and an exit port. A control chamber in...
Full and partial cycle counting apparatus and method
Apparatus for determining the number of cycles occurring in a frequency modulated signal during a sample period, including not only the number of full cycles but...