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| Patent # | Description |
|---|---|
| US-4,498,048 |
NMR Imaging apparatus An NMR imaging apparatus is described having a desired imaging volume for imaging of biological tissue, said apparatus comprising bias means for generating a... |
| US-4,498,047 |
Integrated circuit mounting apparatus An apparatus for mounting an integrated circuit for temporary testing or the like. The mounting apparatus includes a stage or platform which is utilized to... |
| US-4,498,046 |
Room temperature cryogenic test interface This interface permits the testing of high speed semiconductor devices (room-temperature chips) by a Josephson junction sampling device (cryogenic chip) without... |
| US-4,498,045 |
Apparatus and method for determining surface contour of piezoelectric
wafers An apparatus and a method utilizing a localized electrical field to precisely determine the surface contour of a substantially flat wafer of piezoelectric... |
| US-4,498,044 |
Method and circuitry for measuring the impedance of a sensor A method of measuring the impedance of a sensor by applying a sine-shaped AC voltage and transforming the response signal proportional to said impedance into a... |
| US-4,498,043 |
Probes for measuring apparatus A contact sensitive probe, especially for coordinate measuring apparatus, comprising a housing having seatings defining a stable rest position for a stylus... |
| US-4,498,042 |
Mat testing apparatus A high voltage mat testing apparatus which tests successive spaced portions of the mat in a test chamber which houses replaceable test plates to accommodate... |
| US-4,498,041 |
Constant current source circuit A circuit producing a relatively stable constant current during power source voltage fluctuations and driven by a relatively low DC power source voltage, which... |
| US-4,498,040 |
Reference voltage circuit A voltage detection integrated circuit including a voltage regulation circuit for controlling the operation thereof is provided. The voltage detection integrated... |
| US-4,498,039 |
Instrument for use with an electrochemical cell An improved instrument for use with an electrochemical cell that provides a system having enhanced stability and increased bandwidth. The instrument includes a... |
| US-4,498,038 |
Stabilization system for soft-mounted platform A stabilizing system for isolating a load device from vibrations of a supporting structure includes a pivotal member and a spring isolator connecting the load... |
| US-4,498,037 |
Velocity servo controller A motor compensation network for use with a two-degree of freedom velocity servo controller includes first and second compensation means. The first compensation... |
| US-4,498,036 |
Adaptive control system A method of adaptive control for use in a controlled system having an adjustable forward loop gain and a control system apparatus for carrying out the method are... |
| US-4,498,035 |
Control circuit for linearly controlling the speed and direction of an
AC powered DC motor in accordance with... A control circuit for use in controlling both the speed and direction of an AC energized DC motor in a linear relationship to the magnitude and polarity of a DC... |
| US-4,498,034 |
Motor speed control circuit A motor speed control circuit, for example, for the turntable drive motor of a phonograph record player, is of the type having a phase-locked loop including a... |
| US-4,498,033 |
Automatic door actuator Disclosed is an automatic door actuator which comprises arithmetic unit for calculating a weight of a door, a distance of movement of the door and braking points... |
| US-4,498,032 |
High torque digital stepping motor and control Three radially extending push rods (26, 28, 30) make contact with an undulating cam surface on the periphery of a cam (10). The push rods (26, 28, 30) are driven... |
| US-4,498,031 |
Variable frequency current control device for discharge lamps A control circuit for starting and operating a gas discharge lamp comprising a variable frequency waveform generator coupled to the discharge lamp via a... |
| US-4,498,030 |
High-pressure sodium vapor discharge lamp with bimetallic element The invention relates to a high-pressure sodium vapor discharge lamp comprising a discharge vessel and a glow starter. The glow starter in the inoperative... |
| US-4,498,029 |
Microwave generated plasma light source apparatus A microwave generated plasma light source including a microwave generator, a microwave cavity having a light reflecting member forming at least a portion of the... |
| US-4,498,028 |
Ultra-short LoBi electron gun for very short cathode ray tubes An ultra-short high-performance LoBi electron gun is disclosed for use in very short cathode ray tubes. The gun comprises lower end means having a cathode for... |
| US-4,498,027 |
Arc discharge lamp with improved starting capabilities, improved
efficacy and maintenance, and line-of-sight... A line-of-sight arched arc tube of an arc discharge lamp; e.g., a metal halide arc discharge lamp for horizontal operation having an arched upper wall to... |
| US-4,498,026 |
Electron gun for color picture tube An electron gun for a color picture tube comprises opposing cup-shaped electrodes each having a plurality of openings laterally aligned in a row, the electrodes... |
| US-4,498,025 |
Tuning fork A tuning fork utilizing elastic coupling between the flexural mode and the torsional mode in which the frequency of the flexural mode is adjusted by adding or... |
| US-4,498,024 |
Synchronous electrodynamic machine with permanent magnets and cooled by
a liquid This invention has as its object an electrodynamic machine (10) cooled by a liquid contained in a housing (12) in which is mounted a stator (14) whose inner... |
| US-4,498,023 |
Voice coil linear motor with integral capacitor A voice coil linear motor is described in which the armature is supported on a linear bearing attached to the magnet assembly. The magnet assembly comprises a... |
| US-4,498,022 |
Tristate output buffer with high-impedance state responsive to increase
in power supply voltage An output buffer circuit capable of three-output states of high and low levels and a high impedance. The output buffer circuit includes a detector circuit for... |
| US-4,498,021 |
Booster for transmitting digital signal For voltage on a digital signal line whose load capacitance is comparatively large as in a bus line of a CMOS integrated circuit, a detection is made that said... |
| US-4,498,020 |
Current to frequency converter A current to frequency converter having an operational amplifier with two inputs, an output, and a feedback capacitor connected between one input and the output... |
| US-4,498,019 |
Switching circuit with a time delay device A switching circuit with a time-delay device comprises a pulse generator, and a counter which receives pulses therefrom. The overflow output of the counter... |
| US-4,498,018 |
Balancing impedance included in a fork A simplified balancing impedance (Z.sub.2) included in a transformer fork has a constant capacitor (C.sub.5) connected in series with the termination resistor... |
| US-4,498,017 |
Generating power from wind A wind machine turns a shaft to activate a multi-stage positive displacement pump having intake and discharge means respectively coupled to intake and discharge... |
| US-4,498,016 |
Locomotive governor control A digital processor implemented electronic governor for engine-generator units including a first control loop for producing a speed error and controlling fuel... |
| US-4,498,015 |
Flywheel device for a moving vehicle An energy storage device comprising three flywheels mounted mutually perpendicular on said shafts in three dimensions within a rigid enclosure. The shafts are... |
| US-4,498,014 |
Electric generating system An electric generating system is provided and consists of an external power source, an expansion engine connected to the power source, a large generator... |
| US-4,498,013 |
Solid state image sensor exhibiting reduced image smearing effects The invention provides a solid state image pickup device having a plurality of photoelectric transducers and a vertical transfer CCD (charge coupled device)... |
| US-4,498,012 |
Absolute radiometric detector A visible spectrum radiation measuring apparatus achieving an absolute measurement utilizing a plurality of inversion layer silicon photodiodes in a... |
| US-4,498,011 |
Device for receiving, moving and radiation-shielding of vessels filled
with expended reactor fuel elements The invention concerns a device for the receiving, moving and radiation-shielding of vessels filled with expended reactor fuel elements. The device consists of a... |
| US-4,498,010 |
Virtual addressing for E-beam lithography A technique performed in a fixed address particle beam lithographic system where the writing is performed in the normal manner for writing a pattern, for... |
| US-4,498,009 |
Optical lithographic system having a dynamic coherent optical system An optical lithographic system for exposing small linewidths on integrated circuit substrates. The system comprises a deep ultraviolet (UV) source of ... |
| US-4,498,008 |
X-ray image converter devices utilizing rare earth oxyhalide phosphors An improved X-ray image converter is disclosed which utilizes a phosphor layer of plate-like rare earth oxyhalide phosphor crystals having said phosphor crystals... |
| US-4,498,007 |
Method and apparatus for neutron radiation monitoring A self-calibrated neutron radiation monitor includes a flux responsive element comprised of intrinsic silicon neutron detectors and self-calibration resistors in... |
| US-4,498,006 |
Radiation image read-out method and apparatus In a radiation image read-out system in which a stimulable phosphor sheet carrying a radiation image stored thereon is exposed to stimulating rays which causes... |
| US-4,498,005 |
Cassette having radiation image storage medium A cassette for use in a radiation image recording and readout system includes a radiation image storage panel including a layer of stimulable phosphor and having... |
| US-4,498,004 |
Fiber optical measuring device, employing a sensor material with a
non-linear intensity response characteristic... The invention relates to a measuring device for measuring physical and/or chemical quantities, comprising a measuring transducer and an evaluating electronic... |
| US-4,498,003 |
Device for testing the rims of bottle apertures for flaws In a device for testing the rim around the apertures of bottles for flaws there is a rotor which has an optic fiber bundle for transmitting light to the rim or... |
| US-4,498,002 |
Photoelectric instrument for observing a viewing corrider of interest A photoelectric instrument detects dissimilar variations in a viewing corridor and provides an alarm signal responsive to such changes. A lens, such as a camera... |
| US-4,498,001 |
Transimpedance amplifier for optical receivers An improved transimpedance amplifier allows an optical transmitter and receiver to be in close proximity to each other without fear of overloading the receiver.... |
| US-4,498,000 |
Security method and device for communicating confidential data via an
intermediate stage The invention relates to a method and devices allowing exchange of data between authorized bearers of crediting means (1) to be identified, approved and possibly... |
| US-4,497,999 |
Warm-air hand drying apparatus using an induced heated air flow A regulated compressed air source supplies compressed air to a plurality of individual hand dryer stations where an air moving device such as an ejector or... |
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