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Thermal switch with self-test feature
A normally open thermal switch (200) having a bimetallic disk (18) is configured for operational testing in its installed position when exposed to a changing...
Integrated three-dimensional magnetic sensing device and method to
fabricate an integrated three-dimensional...
An integrated three-dimensional magnetic or any field sensing device and a method to fabricate an integrated three-dimensional magnetic sensing device is...
This invention provides security articles comprising fibers, threads and fiber sections ("dots") possessing multiple verification characteristics. The fibers...
Embedded high temperature valve
A high temperature valve for controlling gas flow includes an outer vessel, a valve housing, and a valve element. The valve housing is disposed at least...
Exhaust gas recirculation system
A flow control mechanism connected to the intake and exhaust systems of an engine. The mechanism may achieve recirculation of exhaust gases despite varying...
Submarine ejection optimization control system and method
A submersible vehicle object ejection control system stores a plurality of pump speed command profiles. Each pump speed command profile is based on vehicle...
Removal tool and method of removing a bearing assembly
A compact removal feature comprises a plurality of recesses, such as radius slots, on an inner diameter (ID) of a bearing inner ring. The removal tool can engage...
Method and apparatus for storing and retrieving data related to paths of a
multi-path, multi-tier network
An apparatus is provided for storing and retrieving data relating to paths through a network having a plurality of linked nodes and a destination node, each node...
Method for remotely changing the sensitivity of a wireless sensor
Apparatus for remotely changing the sensitivity of a sensor in a security system which includes at least a first sensor having at least first and second outputs...
Method and system for adjusting the sensitivity of optical sensors
A method and a system for adjusting the sensitivity of an optical sensor are provided. A first beam of light in an optical fiber is separated into first and...
Methods and systems for distinguishing ARINC 743 from ARINC 743A protocols
An apparatus and method for automatically adjusting for data protocol discrepancies. The apparatus includes a unit that receives a signal from GPS receiver. The...
Magnetic security device for securing doors
A lock position detection device includes a door locking mechanism, a magnetic field sensor such as a reed switch and a wireless transmitter. A magnet enters...
Passive mixer with direct current bias
Mixer circuits with direct-current bias are disclosed. An example embodiment of such a mixer includes a first differential transistor pair and a second...
Method and system for linear positioning
Systems and methods for determining linear position are disclosed. An example system includes a magnet with first and second magnetic poles. The first and second...
System and method for AC power generation from a reluctance machine
A system and method is provided for generating AC power using a synchronous reluctance machine (12) or a salient-pole synchronous machine (102) and a power...
Area array device test adapter
Methods and systems are provided for testing circuits having electronic devices. In one embodiment, an electronic device test adapter comprises a base interface...
Grease seal cup to retain lubrication for life extension in existing
A grease seal cup for a splined joint between a drive shaft and a driven shaft comprises a cylindrical portion adapted to form a seal with the outer surface of...
Methods and apparatus to control electro-mechanical brakes
Methods and apparatus to control electro-mechanical brakes are disclosed. A disclosed example method of controlling a brake actuator comprises receiving a value...
Support bridge for flexible circuitry
A flight data recorder having a crash survivable memory unit, a processing unit, a data transmit device and a support device for supporting the data transmit...
Methods and systems utilizing Doppler prediction to enable fusing
A method for controlling a detonation altitude of a radar equipped munition is described. The method includes calculating a velocity of the munition while the...
Method and system for real time pulse processing in ATCRBS/Mode-S
An apparatus for processing pulses in ATCRBS/Mode S interrogations includes an antenna for receiving a radio frequency interrogation signal. The radio frequency...
Method and apparatus for applying external coating to grid array packages
for increased reliability and performance
A method and apparatus are disclosed for selective removal of a conformal coating from the solder balls of grid array packages such that the benefits of the...
Miniature MT optical assembly (MMTOA)
An optical assembly (10) includes a rigid mount (12) with a recess (26) proximate a first side thereof, a substrate (14), and an optical die (16) flip-chip...
Auxiliary power unit exhaust duct with muffler incorporating an externally
replaceable acoustic liner
Methods and apparatus are provided for an exhaust duct having an externally replaceable acoustic liner. The exhaust duct includes a forward section that is...
Closed-loop comb drive sensor
A closed-loop, comb drive device that reduces certain "common mode" sensor errors. The device includes a comb structure, electronics, a substrate, and a position...
Device for increased thermal conductivity between a printed wiring
assembly and a chassis
A floating guide device provides increased thermal conductivity between a printed wiring assembly and a heat sink chassis. The guide device includes an elongated...
Advanced current control method and apparatus for a motor drive system
An apparatus controls a power converter of an AC motor drive system, the power converter outputting multi-phase AC current to an AC motor. The apparatus...
Torque sensor with inverted sensing element and integral shaft housing
Torque sensing methods and systems are disclosed. In general, a sensing element and a sensor housing can be provided for maintaining the sensing element. A...
Profile based method for deriving a temperature setpoint using a `delta`
based on cross-indexing a received...
A method for adjusting a plurality of controlled subsystems in a building or plant that facilitates cooperative energy usage with a utility provider. By...
Capacity degredation in a lead acid battery method and apparatus
In accordance with the invention, there is a battery defect detection method comprising applying a current ramp to a battery; determining a first time (t.sub.1)...
Processes for synthesis of 1,3,3,3-tetrafluoropropene
Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene that comprises, in one preferred embodiment, providing a compound of the formula...
Process for drawing gel-spun polyethylene yarns
A process for drawing essentially diluent-free gel-spun polyethylene multi-filament yarns in a forced convection air oven and the drawn yarns produced thereby,...
Evaporative emissions filter
An evaporative emissions filter for an engine air induction system. The evaporative emissions filter includes a hydrocarbon vapor-adsorbent member disposed...
Control method for gas burners
The invention relates to a control method for gas burners for providing a gas-air mixture.According to the invention, the ionization signal is only used for...
Ultra low pressure drop flow sensor
A fluid velocity sensor includes a sensor die for detecting a fluid property of a fluid flowing through a low resistance flow channel defined by a flow channel...
Method to reduce die edge shorting on pressure sensors using conductive
A pressure sensor includes a sensing element fabricated on an N-type epitaxial layer grown on a P-type substrate, a P-type isolation region located around the...
Wireless acoustic wave sensor system for use in vehicle applications
An acoustic wave sensor system, comprising a plurality of acoustic wave sensing devices for detecting a multiplicity of varying conditions wherein each acoustic...
Light emitting diode driving apparatus with high power and wide dimming
Apparatus are provided for driving an LED light source and controlling a light output of the light source over a wide luminance range in response to a luminance...
Hybrid centered head-down aircraft attitude display and method for
calculating displayed drift angle limit
Methods and apparatus are provided for displaying terrain and attitude data symbology for an aircraft. The apparatus is a hybrid centered head-down display for...
Voltage-controlled oscillator with stable gain over a wide frequency range
An apparatus and method for providing a stable gain over wide frequency range in a VCO are presented. A VCO uses a waveform generator along with a bias generator...
Multi-plane flexible rotor balancing
A rotor balancing system is provided that includes a rotor core, a plurality of core channels, a support wedge, a wedge channel, and balance masses. The rotor...
Customizable ion fusion formation system and process
A customizable ion fusion formation system and method is used to repair a targeted repair region of a workpiece with successive layers of feedstock material. The...
Azeotrope-like compositions of tetrafluoropropene and trifluoroiodomethane
Provided are azeotrope-like compositions comprising tetrafluoropropene and trifluoroiodomethane and uses thereof, including use in refrigerant compositions,...
Control logic for fuel controls on APUs
Conventional auxiliary power units (APUs) may experience over-temperature shutdowns when attempting to start them at high altitudes. Further, such conventional...
A turbocharger actuator and method of calibrating for a variable nozzle turbocharger. Included are an actuator housing having a diaphragm connected across it, a...
Spherical position monitoring system
A contact free optical position sensor for an inertial reference system. The surface of an inertial sensor assembly is adapted with a coordinate encoded pattern....
Navigation system using radio frequency tags
A method of determining a location is provided. The method comprises placing a plurality of radio frequency (RF) tags within an area, mapping the placement of...
Chroma compensated backlit display
Methods and apparatus are provided for a backlit display with variable luminance and chrominance. The apparatus comprises i groups of LEDs of different colors...
Phosphoramidite activator for oligonucleotide synthesis
The present invention provides an improved phosphoramidite activator comprising a solution of 5-benzylmercaptotetrazole in acetonitrile and N-alkyimidazole....