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| Patent # | Description |
|---|---|
| US-4,158,791 |
Helix traveling wave tubes with resonant loss To suppress spurious oscillations in a helix-type traveling wave tube (TWT), frequency-sensitive loading is produced by a lossy resonant circuit attached to a... |
| US-4,158,790 |
High intensity atomic spectral lamp with interchangeable cathode A high intensity atomic spectral lamp having a first set of electrodes including a primary cathode consisting of or comprising a selected element adapted to... |
| US-4,158,789 |
Metal halide arc discharge lamp A high intensity arc discharge lamp comprises an arc tube having tungsten electrodes at each end and containing a fill including mercury, a starting gas and a... |
| US-4,158,788 |
Special motor windings for the suppression of a specific harmonic by
expanding the electrical angle of phase belts A pole amplitude modulated dynamoelectric machine having a specific harmonic suppressed by expanding the electrical angle of the phase belts as well as the... |
| US-4,158,787 |
Electromechanical transducer-coupled mechanical structure with negative
capacitance compensation circuit Arrangements are disclosed for substantially reducing the effect of the inherent transducer capacitance in a transducer-coupled electromechanical system which is... |
| US-4,158,786 |
Display device driving voltage providing circuit A voltage dividing circuit provides an intermediate level potential or intermediate level potentials between the maximum and minimum level potentials necessary... |
| US-4,158,785 |
Pulse regulation delay line modulator A pulse regulation delay line modulator with a load circuit and a regulating circuit for the control of the delay line load voltage. The load circuit directly... |
| US-4,158,784 |
Pulse train generator A pulse train generator operating at subnanosecond periods includes a transferred-electron device (TED) in series with an open circuited resonant transmission... |
| US-4,158,783 |
Current hogging injection logic with self-aligned output transistors Improved integrated bipolar semiconductor structures and a method of fabricating same are disclosed. The logic circuit structures disclosed have enhanced density... |
| US-4,158,782 |
I.sup.2 L interface with external inputs and method thereof Combining a differential PNP transistor pair for receiving external digital signals with an NPN output transistor in an I.sup.2 L configuration connected to the... |
| US-4,158,781 |
Transmit receive solid state switch for electroacoustic transducers A solid state transmit-receive switching element having multiple resonant rcuits connected in a bridge arrangement by back-to-back zener diodes. While receiving,... |
| US-4,158,780 |
Power generation systems in buoyant structures A power generation system for the generation of electrica power from wave motions of the sea comprising a spine on which a plurality of ducks are rockably... |
| US-4,158,779 |
X-ray shield A shielding device for the protection of human embryo cells from the effects of radiation during examination by X-ray comprising a radiant absorbent protective... |
| US-4,158,778 |
Optoelectronic scanning device An optoelectronic scanning device comprising two sets of photoresponsive elements adjusted to operate at different detection levels and aligned to scan materials... |
| US-4,158,777 |
X-ray apparatus An X-ray apparatus includes an image amplifier assembly located above the patient's support table and an X-ray tube located below the patient table. Linkage... |
| US-4,158,776 |
Patient sensing and indicating arrangement for a computed tomography
system An arrangement is provided for sensing and indicating if a cross section of a patient extends beyond an image reconstruction circle during examination. The... |
| US-4,158,775 |
High resolution threshold photoelectron spectroscopy by electron
attachment A system for determining the stable energy levels of a species ion, of an atomic, molecular, or radical type, by application of ionizing energy of a ... |
| US-4,158,774 |
Radiation detector with improved performance characteristics A radiation detector of the gas-filled counter tube type which has a reduced count rate drift. An electrically conductive coating is applied to the interior... |
| US-4,158,773 |
Shock-resistant scintillation detector A unique scintillation detector unit is disclosed which employs a special light transfer and reflector means that encases and protects the scintillator crystal... |
| US-4,158,772 |
Device for collecting and analyzing matrix-isolated samples A gas-sample collection device is disclosed for matrix isolation of individual gas bands from a gas chromatographic separation and for presenting these distinct... |
| US-4,158,771 |
Ion filter and method of making the same A method of making an ion filter having an electrically insulating body formed of at least two longitudinal parts and having metallized inner faces of generally... |
| US-4,158,770 |
Radiographic imaging system A system for imaging a subject, such as a human being, in which there has been injected a contrast agent which absorbs radiation of a predetermined frequency.... |
| US-4,158,769 |
Determination of uranium content in material The content of uranium, in a solution, as extracted from uranium ore by a solution mining technique for example, is determined by measuring the intensity of... |
| US-4,158,768 |
Bi-axial scanning device for following the outline of a template A bi-axial scanning device for guiding a template copier for machine tools comprises a shaft carrying a scanner with a pointer at one end and adapted to assume a... |
| US-4,158,767 |
Programmable binary counter This invention concerns a programmable counter which can be preset to provide an output indication one pulse after the count of the incoming signal pulse train... |
| US-4,158,766 |
Inspection of elongated workpieces such as random length boards For enabling a computer to calculate locations of cuts across an elongated workpiece that will divide it into standardized length finished pieces of optimum... |
| US-4,158,765 |
Totalizer for two-wire transmitter An electronic totalizer interposable in the line of a two-wire transmitter having a transducer which converts a metered variable into a current signal that is... |
| US-4,158,764 |
Device for heating liquid in a container The device includes a coiled conductor formed of an alloy having a high electrical resistance and has an outer tubular casing of plastic material which is inert... |
| US-4,158,763 |
Curved nozzle welding gun A welding gun has a separable nozzle embodying longitudinally curved inner and outer concentric sleeves, and fore and aft-mounted bodies to which the opposed... |
| US-4,158,762 |
Apparatus and method for cutting and heat sealing woven thermoplastic
material A method and apparatus for cutting and heat sealing the ends of lengths of woven thermoplastic material is disclosed with the apparatus including selectively... |
| US-4,158,761 |
Plural work-piece positioning apparatus A workpiece support for supporting multiple workpieces in an immersion bath for spark machining including a stationary workpiece support and an adjustable... |
| US-4,158,760 |
Seed heating microwave appliance An appliance for heating seeds, nuts, grains and the like such as popcorn kernels, for example, by means of microwave radiation, comprising a bowl which is... |
| US-4,158,759 |
Microwave oven control system An electronic display having a plurality of digit positions is employed in conjunction with a keyboard to enter data for controlling the operation of a microwave... |
| US-4,158,758 |
Method and apparatus for heat treatment of metal member In continuous induction heat treatment of an elongated metal member, additional local induction heating is applied to an end portion or portions of the metal... |
| US-4,158,757 |
Enclosure seal A seal for an enclosure of electrical equipment includes a metal frame which is clamped between sealing surfaces on the enclosure base and the enclosure cover. A... |
| US-4,158,756 |
Dynamic loudspeaker with plastic basket encapsulating front pole plate A loudspeaker driver has a molded plastic basket made of thermoplastic polyester with 20-30% glass fill and a stamped octagonal front pole plate of low... |
| US-4,158,755 |
Telephone system open switching interval protection circuit A circuit which can be appliqued to external terminals of a prior art key telephone line circuit to protect the circuit from prematurely cancelling a... |
| US-4,158,754 |
Mounting apparatus for communication exchange equipment A mounting apparatus for communication signals exchange equipment is described. The apparatus includes supporting poles, each of which is erected close to each... |
| US-4,158,753 |
Headphone of circumaural design The headphone includes a cup-shaped case forming the coupling space and this cup-shaped case, in use, engages the user's head and encloses the user's ear. At... |
| US-4,158,752 |
Carrier subscriber telephone station terminal loop current booster The local battery and elements of a booster circuit of the energy storage-energy discharge type of swinging choke power converter are connected in series in the... |
| US-4,158,751 |
Analog speech encoder and decoder Described herein are analog speech encoder and decoder systems using a plurality of narrow band pass filters with associated rectifiers and ripple filters for... |
| US-4,158,750 |
Speech recognition system with delayed output In a speech recognition system of the type including a recognition unit responsive to a voice input and a conditioning input for recognizing the voice input to... |
| US-4,158,749 |
Arrangement for discriminating speech signals from noise An audio squelch circuit uses spectral analysis of the audio signal to derive two test signals, one of the two indicating speech presence "energy" and the other... |
| US-4,158,748 |
Apparatus for digital data synchronization A system, including an encoder and decoder, for the transmission of digital information over a transmission medium. The encoder processes a data stream of length... |
| US-4,158,747 |
Electrostatic tablet writing stylus An improved device for capacitively detecting signals generated in a writing table by a grid of conductive wires that produce a varying electrostatic field near... |
| US-4,158,746 |
Cable with color coding identification of groups A cable comprises a plurality of conductors arranged in one or more units of a predetermined number of conductors, with each unit having one or more groups of... |
| US-4,158,745 |
Lead frame having integral terminal tabs A continuous strip of stamped and formed lead frames for a semi-conductor chip comprises a continuous carrier strip having three laterally extending arms... |
| US-4,158,744 |
Electrical resistance furnace for the production of silicon carbide An electric resistance furnace for the production of silicon carbide from silicon dioxide and carbon has a U-shaped carbonaceous resistance core embedded in the... |
| US-4,158,743 |
Electric resistance furnace An electric resistance furnace used for melting metals and maintaining them in melted condition. The furnace is also used for production of metal alloys,... |
| US-4,158,742 |
General purpose rocket furnace A multi-purpose furnace for space vehicles used for material processing experiments in an outer space environment. The furnace contains three separate cavities... |
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