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| Patent # | Description |
|---|---|
| US-4,839,673 |
AC corona enhancement for electrostatic imaging devices The image receiving surface of a non-impact image printer such as an electrographic printer is treated with an AC corona just prior to image transfer to paper or... |
| US-4,839,672 |
Exposure device and printer with an led array An exposure device for the image-wise exposure of a photosensitive layer by means of an LED array, whereby the cumulative loading of each LED over a specific... |
| US-4,839,671 |
Selectable density charge deposition printing system Ionographic raster scan printing apparatus capable of printing with selectable print density utilizes an imaging drum having a surface movable in a process... |
| US-4,839,670 |
Synchronized aperture motion ionography A high speed digital ionographic printer employing an ion deposition control bar interposed between the ion source and the movable charge receptor, the bar... |
| US-4,839,669 |
Liquid jet recording head A liquid jet recording head, having a liquid pathway communicated to the discharging outlet of the liquid provided on a substrate surface, said pathway being... |
| US-4,839,668 |
Liquid jet recording head A liquid jet recording head, having a liquid pathway communicated to the discharging outlet of the liquid provided on a substrate surface, said pathway being... |
| US-4,839,667 |
Platen for use in thermal printer A platen for use in thermal printer of a type designed to effect a printing with the use of at least one thermal print head for printing on a recording medium... |
| US-4,839,666 |
All surface image forming system An image forming system including a reservoir for supplying a deposition medium to a spray head. The deposition medium may include one or more of a wide variety... |
| US-4,839,665 |
Method and apparatus for controlling the electrical charging of drops in
an ink jet recording apparatus In an ink jet recording apparatus, the generation of insufficiently charged or discharged drops which may occur when a charge controlling signal (print pulse) is... |
| US-4,839,664 |
Fluid-jet catcher with removable porous metal ingestion blade A fluid-jet printer has a droplet catcher structure and an ingestion blade whereby deflected charged droplets flow by means of a vacuum from the catcher... |
| US-4,839,663 |
Dual polarized slot-dipole radiating element Two contiguous half-height waveguides (12, 14) having a common broad wall (16) are provided with a pair of closely spaced equal length slots (20) and a single... |
| US-4,839,662 |
Composite waveguide coupling aperture having a varying thickness
dimension A composite coupling aperture for coupling energy between two waveguides having a thickness dimension t perpendicular to the aperture-plane characterized by a... |
| US-4,839,661 |
Guided wave antenna system and method A novel underground guided wave antenna system and method. The system comprises at least one substantially linear, electrically insulated radiating element which... |
| US-4,839,660 |
Cellular mobile communication antenna A mobile antenna system for use at frequencies in and above the 800 MHz band having a collinear radiator mounted on one surface of a dielectric such as the... |
| US-4,839,659 |
Microstrip phase scan antenna array A microstrip phase scan antenna array is provided having a columnar array microstrip radiating patches mounted on a dielectric substrate. Each column of the... |
| US-4,839,658 |
Process for en route aircraft conflict alert determination and prediction A process is provided for establishing when selected pairs of airborne aircraft are in en route conflict or are in potential en route conflict. The process... |
| US-4,839,657 |
System for recording and reproducing radar signal information A recording and reproducing system for radar signal information includes a pulse stretcher that detects master trigger pulses and, upon each occurrence, provides... |
| US-4,839,656 |
Position determination and message transfer system employing satellites
and stored terrain map A radio position determination and message transfer system is implemented using a pair of satellites in geostationary orbit for relaying interrogation and reply... |
| US-4,839,655 |
Moving target detector signal processor enabling selected video output
with smooth amplitude A radar system includes N Doppler filters (N is an integer larger than 1), N CFAR (Constant False Alarm Rate) processing means, a video selector, automatic... |
| US-4,839,654 |
System for detecting underground objects A system for detecting underground objects which uses reflected wave profile data collected for obtaining a detected image output and subjects the data to a... |
| US-4,839,653 |
High-speed voltage-to-frequency converter A voltage-to-frequency converter comprising a triwave generator responsive to an input signal to produce an output triangular signal the frequency of which... |
| US-4,839,652 |
Method and apparatus for high speed digital phased array coherent
imaging system A method for generating an output stream of digital data words, with each data word representing the amplitude of an analog signal at one of a multiplicity F... |
| US-4,839,651 |
Apparatus for measuring the dynamic characteristics of an analog-digital
converter Apparatus for measuring the dynamic characteristics of an ADC in which the clock for a generator of digitized words representing a plurality of cycles of an... |
| US-4,839,650 |
Analog-to-digital conversion Analog-to-digital converters are subject to errors including the known half least significant bit quantization error and also bit weighting errors due to lack of... |
| US-4,839,649 |
Signal processing system A signal processing system capable of converting various input analog signals including bioelectric signals, such as electrocardiographic signals,... |
| US-4,839,648 |
Method of determining the trajectory of a body suitable for moving along
a portion of a path, and apparatus for... A method of determining the trajectory of a body (1) such as a vehicle body on a relatively plane path portion (2), the method being characterized in that it... |
| US-4,839,647 |
Illuminated traffic signal for color blind persons A traffic signal control which is designed for color-blind persons, and has a unique geometric shape for the information to be conveyed. The traffic signal... |
| US-4,839,646 |
Movement parameter sensor A movement parameter sensor for sensing of parameters of movement between a stator member defining a frame of reference and a rotor member movable relative to... |
| US-4,839,645 |
Weather data transmitting system A system is disclosed for transmitting a sensed temperature from a transmitter to a remote receiver over a modulated carrier through the atmosphere. The... |
| US-4,839,644 |
System and method for communicating signals in a cased borehole having
tubing A system and method are disclosed for wireless two-way communication in a cased borehole having tubing extending therethrough. A downhole communications... |
| US-4,839,643 |
Broadband signal switching equipment Switches having a relatively high forward resistance are provided in a broadband signal switching equipment comprising a crosspoint matrix constructed in field... |
| US-4,839,642 |
Data transmission system with data verification A system for selectively obtaining information from a plurality of remotely located data indicating devices includes an interrogate source and a plurality of... |
| US-4,839,641 |
Pager receiver capable of controlling an internal state by a call signal In a pager receiver operable in response to a call signal comprising a first part including a call number signal, a second part including a message signal, and... |
| US-4,839,640 |
Access control system having centralized/distributed control The access control system according to the present invention provides for the centralized control of the system operating parameters, including all times, access... |
| US-4,839,639 |
Paging receiver having battery saving circuit A paging receiver includes an improved battery saving circuit which reduces battery usage by powering the radio section and the waveform shaping circuitry only... |
| US-4,839,638 |
Programmable circuit for controlling a liquid crystal display Programmable circuit for controlling a liquid crystal display (LCD controller), possibly through the intermediary of driver stages, for two bus structures, one... |
| US-4,839,637 |
Method of driving gas-discharge panel A method of driving a gas-discharge display panel in which a plurality of discharge cells constructed of display anodes and cathodes are arrayed in the form of a... |
| US-4,839,636 |
Control of display having both dot-matrix and segment display elements A device for controlling an opto-electronic display device has dot-matrix display elements (15), a controller (10) which has an addressable dot-matrix character... |
| US-4,839,635 |
Signboard for displaying optical images The present invention constitutes a display system (10) for alpha-numeric and graphic images. The system provides a signboard on which varying images of... |
| US-4,839,634 |
Electro-optic slate for input/output of hand-entered textual and graphic
information A portable interactive electro-optic data input/output, storage, processing, and display device responsive to hand printed text and hand drawn graphics. The... |
| US-4,839,633 |
Asymmetric voltage monitor for series supplies Disclosed is a supply voltage monitor for detecting the asymmetric decay of one voltage source (V.sub.dd) with respect to another voltage source (V.sub.ss). The... |
| US-4,839,632 |
Intrusion alarm screen assembly An intrusion alarm screen assembly having mounting brackets at the corners and a pair of substantially rigid opposite end piece assemblies on which the screen... |
| US-4,839,631 |
Monitor control apparatus A monitor control apparatus for preventing crimes commited within or in the vicinity of a building in which movements of individuals are detected to determine... |
| US-4,839,630 |
Emergency signal device In a mobile home park having a source of a.c. house current, an emergency signal system for individual mobile homes includes a master unit including a step-down... |
| US-4,839,629 |
Pickup truck tailgate protector with third tail light This invention relates to a pickup truck tailgate protector having a third tail light. The tailgate protector is made out of a plastic material shaped to fit... |
| US-4,839,628 |
Paging receiver having selectively protected regions of memory A paging receiver includes a nonvolatile memory which is readable for controlling the operation of the paging device and is capable of being partitioned into a... |
| US-4,839,627 |
Variable resistor A variable resistor including terminal leads punched out of a metal plate the end portions of which are arranged to be positioned accurately onto corresponding... |
| US-4,839,626 |
Power control device A power control device of the type including a bimetallic element electrically heated in the course of supplying power to a heatable device, a switch having... |
| US-4,839,625 |
Fuse A fuse comprising a body (20) encapsulating a fuse element (22), said body (20) including a baseplate (16) formed from a material having good thermal ... |
| US-4,839,624 |
Magnetic cores Magnetic cores are manufactured from preforms of magnetically permeable strip material wrapped about non-magnetic supports. The preforms have configurations,... |
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