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3976884 |
Method for remote monitoring of gaseous products
A method for remotely monitoring the concentration of a particular gas species in a gaseous mixture. The remote detection of pollutants emitted in source effluents, e.g., gas from a smokestack,...
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3963326 |
Data display panels
A module, for a data display panel, comprising a number of elements, each separately controllable to be selectively illuminated or extinguished so as to display any one of a plurality of symbols....
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3897997 |
Electrostatic display device with variable reflectivity
An electrostatic display device is described having electrically controllable reflectivity to ambient light. A fixed electrode having a curvature of constant radius is mounted adjacent to and...
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3807659 |
LASER PROTECTION MECHANISM
A mechanism for use with a missile director sight to protect an operator's ye from feedback effects of laser energy at the time of missile firing. The mechanism includes means for causing a shutter...
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3804506 |
ROTARY SOLENOID SHUTTER DRIVE ASSEMBLY AND ROTARY INERTIA DAMPER AND STOP PLATE ASSEMBLY
A camera shutter assembly having a pair of superposed opaque planar shutter blades, each having an aperture and being arranged for reciprocal linear movement is disclosed. A pair of rotary...
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3803637 |
LASER PRINTER
A laser printing system wherein man readable alphanumeric characters and machine readable binary code marks are laser marked on card connector housings. A scanning galvanometer and mirror, lens,...
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3797918 |
OPTICAL APPARATUS WITH SPECTRAL FILTERS FOR TESTING FASTNESS OF COLORS
Apparatus and method for obtaining a detectable variation in a sample in response to radiation. The apparatus includes a source of radiation and a sample to be tested. Filters and a moveable...
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3736402 |
AUTOMATED LASER TOOL
An automated laser tool including a work table upon which a work piece is placed, a stationarily mounted laser, and optical means for directing the output beam from the laser along a controlled...
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3721172 |
CAPPING SHUTTER WITH EXPLOSIVE CHARGE OF CARBON POWDER
A shutter comprises a frame of elastomeric material which bounds an opening for the passage of light. A pair of parallel transparent plates are sealingly accommodated in the frame exteriorly across...
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3709584 |
LIGHT BLOCKING ARRANGEMENT
A chamber with two normally transparent walls is arranged in the path of light. Injectors mounted on the wall of the chamber inject carbon to cover the transparent walls upon receipt of...
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3636552 |
OPTICAL PATH SELECTION SYSTEM
An optical path selection system for use in information display or retrieval system wherein backwardly of a character plate having a suitable number of characters arrayed in rows and columns are...
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3634695 |
AUTOMATIC TRANSFORM ANALYZER
An optical data processing system of the coherent spatial filter type which (a) produces enhancement of the contrast of filtered images before they are photographed by providing a controllable...
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3632192 |
TUNING FORK LIGHT MODULATOR
There is disclosed a light modulating structure including an open-ended housing within which an electromagnetically driven tuning fork structure is supported. A source of light is located between...
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3621467 |
AMPLITUDE LIMITER FOR TUNING FORK OSCILLATOR
A tuning fork oscillator having a pair of tines which are sustained in vibration by an electronic drive system subject to change whereby the amplitude of fork vibration tends also to change. The...
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3619037 |
A LASER BEAM SHUTTER INCLUDING A HEAT SINK
A control for disrupting and permitting the flow of the output beam of a laser to a workpiece. The control includes a shutter mounted in the path of the output beam and movable between a position...
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3602579 |
ELECTROMECHANICAL LIGHT VALVE SYSTEM
This invention embodies an electromechanical device associated with and coacting between an electronic memory storage system containing predetermined light intensity settings in code, and a novel...
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3586439 |
DIRECT READING PYROMETER EMPLOYING PYROELECTRIC CRYSTAL DETECTOR
A lead zirconium titanate crystal possessing pyroelectric characteristics is employed in a direct reading pyrometer for measuring directly the temperature of an object, principally by the infrared...
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3577101 |
ELECTROMECHANICAL TORSIONAL OSCILLATOR
An electromechanical torsional oscillator for the modulation of devices for measuring electromagnetic radiation frequencies, the oscillator including a mechanical vibrator device with two opposing...
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3572906 |
AUTOMATIC ELECTRORESPONSIVE LIGHT REGULATOR UTILIZING TRANSLATIONAL DRIVE MOTOR
The effects of friction and vibration are eliminated from an automatically regulated iris, optical filter, or similar arrangement by employing an electroresponsive drive motor with translational...
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3564261 |
ELECTROLYTIC LIGHT SCATTERING SHUTTER SYSTEM
An optical shutter in the form of an electrochemical cell responds to an intense light flash to switch from a light transmitting condition to a light scattering condition. The cell includes a pair...
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3553364 |
ELECTROMECHANICAL LIGHT VALVE
An electromechanical light valve in an array of many such valves for controlling the transmission of light in continuously changing patterns. Each light valve consists of a housing having grounded...
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3549827 |
DATA CONTROLLED VOICE UNIT
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3548197 |
LIGHT PROTECTION DEVICE WITH A MOVABLE OPAQUE SHIELD
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3536910 |
BEAM-CHOPPERS FOR USE IN SPECTROSCOPES AND LIKE INSTRUMENTS
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3525873 |
VIBRATING SLIT PHOTOELECTRIC LOCATION DEVICE
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3518930 |
CAMERA LIGHT CONTROL ARRANGEMENT
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3517197 |
PYROTECHNIC MEANS FOR INTERRUPTING THE LIGHT OUTPUT OF A FLASHBULB
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3517196 |
PYROTECHNIC DEVICE FOR INTERRUPTING THE LIGHT OUTPUT OF A FLASH BULB
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3514191 |
LIGHT VALVE WITH AUTOMATIC CLOSURE CONTROL
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3502015 |
PNEUMATICALLY OPERATED CAMERA SHUTTER
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3493292 |
TUNING FORK STRUCTURES
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3486388 |
SIGNAL-CONTROLLED POSITIONING APPARATUS
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3477787 |
PIEZO ELECTRIC SHUTTER
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3447862 |
LIGHT VALVE SYSTEM
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3442198 |
EXPOSURE CONTROL SYSTEM
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3407401 |
Reflective electrical oscillating display device
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3400647 |
High-speed shutter using a magnetostrictive transducer
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3389259 |
Optical instrument anti-flash shutter system
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3365714 |
Incremental code block apparatus
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3361045 |
Fast-opening diaphragm
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3360328 |
Exploding wire high-speed shutter for protecting a human viewer
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3357120 |
Indicia projection assembly
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3347144 |
High speed electromechanical shutter for spectrographs
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3347615 |
Mechanically stabilized light chopper
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3336852 |
Magnetically actuated shutter
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3335512 |
Illuminated sign
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3306206 |
Radio frequency free communication system
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3282187 |
Fast-operating, large-aperture shutter
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3252318 |
Electrically operated shutter
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3244060 |
Scanning device for light tracking systems
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