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| Number | Title | Issue Date |
| 5483436 | Gate drive power supply operable from a source of unregulated DC electric power A power supply for a gate drive voltage supply system for a power inverter is coupled to receive a variable DC voltage and operable to produce a regulated DC output voltage to each of a plurality of distributed electronic switching devices. The system inc... | 01/09/1996 |
| 5477163 | Turn fault detection A method for detecting turn faults in an induction motor comprises measuring at least two motor phase currents, at least two motor phase voltages, and the negative sequence impedance. Motor torque is estimated by employing the at least two motor phase cur... | 12/19/1995 |
| 5467185 | Emissions control for internal combustion engine Respective SiC (silicon carbide) photodiode sensors are used to measure flame temperature at each cylinder of an internal combustion engine, and information generated by the SiC photodiode sensors is used to control the fuel injection in a feedback loop t... | 11/14/1995 |
| 5463458 | Optical sensor for duct fan discharge mach numbers A Mach number sensor comprises a first pulse speed sensor situated in direct contact with an open area through which a first pressure pulse can pass and a second pulse speed sensor situated in a thermally conductive tube with membrane-covered ends having ... | 10/31/1995 |
| 5449427 | Processing low dielectric constant materials for high speed electronics A method for processing a low dielectric constant material includes dispersing an additive material in a porous low dielectric constant layer, fabricating a desired electronic structure, and then removing the additive material from the pores of the low di... | 09/12/1995 |
| 5442953 | Dynamic commutator profile system A dynamic profiling system for measuring a profile of an outer surface of a moving motor component such as a commutator includes a movable probe assembly having a profile detecting probe and a probe cooling system for circulating a cooling liquid about th... | 08/22/1995 |
| 5436442 | High temperature photodetector array An optical detection system includes an array of photodetectors, each of which is positioned for receiving light and converting the light into an electrical signal. A plurality of high pass filters is positioned with each one of the high pass filters elec... | 07/25/1995 |
| 5401959 | Optical temperature compensation of spectral modulation sensors by ratiometric interrogation having dichroic filters An optical temperature compensation system for spectral modulation sensors comprises a light director for receiving excitation light and a spectral modulation sensor for receiving a first portion of the excitation light from the light director. A source m... | 03/28/1995 |
| 5401958 | Optical temperature compensation of spectral modulation sensors by spectrographic interrogation having a dispersive element An optical temperature compensation system for spectral modulation sensors includes a light director for receiving excitation light, a spectral modulation sensor for receiving and modulating a first portion of the excitation light from the light director,... | 03/28/1995 |
| 5399866 | Optical system for detection of signal in fluorescent immunoassay An imaging system responsive to focused laser light includes a focusing lens for focusing the laser light and a mirror having a reflective side, a non-reflective side, and a hole for passing a predetermined portion of the laser light from the focusing len... | 03/21/1995 |
| 5398404 | Apparatus for brazing rotor bars to end rings of a rotor for an asynchronous AC motor A method for brazing end rings to rotor bars for a squirrel cage rotor assembly comprises assembling the rotor in a brazing fixture with a braze shim between the rotor bars and the end rings; preheating the rotor and brazing fixture to a temperature that ... | 03/21/1995 |
| 5394720 | Apparatus for producing form wound stator coils Apparatus for forming a form wound stator coil from a bobbin has means for clamping the straight portions of the bobbin to define the straight portions of the each leg of the coil. It also has means for bending the bobbin to predetermined radii to form ar... | 03/07/1995 |
| 5391233 | Apparatus for depositing hard coating in a nozzle orifice The present invention is directed to a process for coating the interior surfaces of an orifice in a substrate that forms a slurry fuel injection nozzle. In a specific embodiment, the nozzle is part of a fuel injection system for metering a coal-water slur... | 02/21/1995 |
| 5387039 | AC traction motor with drive end bearing assembly for locomotive A pinion end bearing assembly for supporting and sealing about a shaft which extends through the frame of a traction motor, such as an AC traction motor. The assembly having a rearward end plate assembly attached to the frame, a housing attached to the fr... | 02/07/1995 |
| 5385855 | Fabrication of silicon carbide integrated circuits A depletion mode MOSFET and resistor are fabricated as a silicon carbide (SiC) integrated circuit (IC). The SiC IC includes a first SiC layer doped to a first conductivity type and a second SiC layer overlaid on the first SiC layer and doped to a second c... | 01/31/1995 |
| 5378642 | Method of making a silicon carbide junction field effect transistor device for high temperature applications A silicon carbide (SiC) junction field effect transistor (JFET) device is fabricated upon a substrate layer, such as a p type conductivity SiC substrate, using ion implantation for the source and drain areas. A SiC p type conductivity layer is epitaxially... | 01/03/1995 |
| 5371501 | Architecture for arbitrary nonlinear quantization of multi-channel data An output circuit for use with an array of analog energy detectors includes a system for digital companding which is capable of providing output signals with an enhanced dynamic range. A digital compressor is provided for converting the output signals of ... | 12/06/1994 |
| 5367585 | Integrated microelectromechanical polymeric photonic switch A microelectromechanical photonic switch includes first and second waveguides. Insulative cladding containing a gap and having a lower refractive index than the refractive indices of the first and second waveguides is situated between the first and second... | 11/22/1994 |
| 5367584 | Integrated microelectromechanical polymeric photonic switching arrays A microelectromechanical photonic switching array comprises a plurality of first waveguides and a plurality of second waveguides. Insulative cladding is situated between the first and second waveguides. Each of the first waveguides is positioned with pred... | 11/22/1994 |
| 5363039 | Auto self test of AC motor system Apparatus and method for auto-self testing of a power converter and motor system wherein the power converter has three parallel legs, each including two series connected gate-turn-off thyristors (GTO) connected between a pair of DC power source buses. A m... | 11/08/1994 |
| 5349954 | Tumor tissue characterization apparatus and method An instrument for characterizing tumor tissue includes a broad-band light source, a monochromator for filtering collimated light from the broad-band light source, a scanner for scanning the monochromator through a range of predetermined wavelengths, and a... | 09/27/1994 |
| 5345358 | Method for evaluating operability of filter components in power conversion system A method for measuring capacitance in a power conversion system by measuring the time rate of discharge of the capacitance means and computing the value of capacitance corresponding to the measured discharge rate and a method for verifying that a filter i... | 09/06/1994 |
| 5343037 | Environmental and physical parameter sensors incorporating polymer-covered fiber field access blocks An apparatus for detecting presence of a measurand includes a measurand sensitive layer overlying a fiber field access block. The fiber field access block has a clad fiber positioned such that a portion of the fiber is exposed to the measurand sensitive l... | 08/30/1994 |
| 5324933 | High accuracy and high sensitivity environmental fiber optic sensor with corrugations An apparatus for detecting a measurand includes a fiber field access block having a clad fiber positioned in the fiber field access block such that a portion of the fiber is exposed to an outer surface and any cladding on that portion of the clad fiber is... | 06/28/1994 |
