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| Number | Title | Issue Date |
| 4173376 | Bearing assemblies A bearing assembly is provided in which bearing preload is exerted by both high and low rate non-linear springs, the low rate springs being substantially collapsed when the preload is applied. A shaft is mounted in two angular contact ball bearings contai... | 11/06/1979 |
| 4113204 | Auxiliary control of vehicle direction An auxiliary aerodynamic or hydrodynamic control assembly is provided for a vehicle, such as a guided missile, travelling in a fluid medium, which assembly comprises a number of, say three, control surfaces each carried at the inner end of an arm that is ... | 09/12/1978 |
| 4103160 | Optical scanning equipment Line-scanning equipment, especially for aerial photography of terrestrial scenes, has an infra red scanner which causes the scanning beam to sweep repeatedly across the scene in the direction at right angles to the direction of travel of the aerial vehicl... | 07/25/1978 |
| 4036763 | Noise and drift correcting amplifier circuit for a live-scan imaging system In an imaging system, a radiation detector which scans an image has it output amplified by a D.C. preamplifier and to neutralize low frequency noise and drift the preamplifier output is amplified by a further D.C. amplifier having a feedback capacitor and... | 07/19/1977 |
| 4019804 | Optical scanning systems with image curvature correcting means In an optical scanning system having a rotary scanner with multiple reflectors, which scanner images a light-responsive detector and moves that image repeatedly across the flat image field of an objective to generate a scanning raster, an optical correcto... | 04/26/1977 |
| 4013889 | Electronic amplification Scanning apparatus for scanning a field of view having a multidetector array which traverses the field of view, the detectors of which are sensitive to variations in electromagnetic radiation wherein each detector is a.c. coupled to an amplifier in a resp... | 03/22/1977 |
| 3995933 | Optical scanning system for dirigible heads In a mechanism for controlling the movements of a dirigible scanning head, movement about one of three orthogonal axes is imparted to the head by means of a pair of flexible straps which are fastened to the head at opposite sides of said one axis and exte... | 12/07/1976 |
| 3983537 | Reliability of random access memory systems A digital memory is configured as a hierarchical system with at least three levels. The first level consists of a main bus and interfacing for one or more main memory units; the second level consists of a separate second level bus in each main memory unit... | 09/28/1976 |
| 3978324 | Automatic crop inventory system In an automatic inventory system for crops, especially tree-borne crops, an airborne television camera views the area being surveyed and delivers an analogue video signal which is converted into a series binary digital signal by a level detector. The seri... | 08/31/1976 |
| 3955083 | Interferometric device for encoding shaft angles In a shaft angle encoder, an optical system translates the shaft angular displacement into a difference of two optical path lengths and that difference is measured by interferometry. Light from a monochromatic source is split and both the transmitted and ... | 05/04/1976 |
| 3935448 | Optical scanning systems An optical scanning system has a dirigible head of generally spherical shape mounted on a support body for scanning through a substantially hemispherical field of view, and optical lenses, a scanner rotor and drive motor therefor, and a cryogenically-cool... | 01/27/1976 |
| 3932734 | Binary parallel adder employing high speed gating circuitry In a binary parallel complementing L.S.I. adder, a C-MOS transmission gate is provided in each stage with its input and output directly connected to the carry in and carry out leads of the stage. The gate is switched by complementary control bits derived ... | 01/13/1976 |
