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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 5055901 | Multi-layer metal silicide infrared detector The efficiency of a metal silicide infrared (10) in greatly enhanced by depositing on the substrate (14) a stack (30) of alternating metal silicide (12,24) and silicon layers (22). The metal silicide layers (12,24) are connected to each other and to a con... | 10/08/1991 |
| 4997146 | Electronic sun incidence avoidance device One-dimensional sun sensing and angle measurement assemblies are deployed with substantially totally overlapping fields of view on a plane of a spacecraft body to protect sensors within a protected angular area of the plane, each of the analog sun sensors... | 03/05/1991 |
| 4997683 | Method for increasing the density of an article Process for increasing the density of an article. A coating containing boron nitride and carbon is applied to the article to form a coated article. The coated article is encapsulated. The encapsulated article is subjected to hot isostatic pressing. The co... | 03/05/1991 |
| 4987105 | Carbon/boron nitride release coating A superior release coating for glass-encapsulated ceramic or ceramic composite bodies in hot isostatic pressing processes is obtained by mixing boron nitride with up to about 30% by weight of carbon.... | 01/22/1991 |
| 4973115 | Free expansion pseudo-zoom for laser projector The angle of divergence of a laser beam (29) is controlled without significant variation of beam power by using a movable corner cube (18) to vary the length of the optical path of a noncollimated beam (12) so as to present a beam of varying diameter to a... | 11/27/1990 |
| 4972197 | Integral heater for composite structure A heater for a composite structure (2) is integrally formed as part of the structure (2) itself. The structure (2) comprises a layer of conductive fibers (30), such as a carbon felt mat, embedded in a nonconductive matrix (31). Electrodes (11, 12) inject ... | 11/20/1990 |
| 4967065 | Integrated reticle and detector The electronic simplicity of a rotating-telescope target acquisition device and the noise immunity and wide field of view of a non-rotating array device are combined in an assembly (10) using a rotating refractory telescope (21) on a gimbaled platform (28... | 10/30/1990 |
| 4967126 | Method of controlling a seven degree of freedom manipulator arm The present invention is a control system for a seven-degree-of-freedom robotic arm. The robotic arm (10) includes two links (12 and 14), each having two degrees of freedom, and a spherical wrist (26) having three degrees of freedom. The kinematics of the... | 10/30/1990 |
| 4965649 | Manufacture of monolithic infrared focal plane arrays The manufacture of monolithic HgCdTe detectors and Si circuitry in an IR focal plane array is achieved by forming a protective layer of SiO2 or SiNx on a silicon wafer containing silicon circuits, etching steep-wall recesses into the... | 10/23/1990 |
| 4960550 | Encapsulation method for hot isostatic pressing The encapsulation of ceramic preforms (10) for HIP processing is considerably simplified, and the use of standard laboratory glassware as encapsulation material is made possible, by placing non-sealed glass capsule parts (12, 14) around the preform (10) i... | 10/02/1990 |
| 4958349 | High data rate BCH decoder A decoder for selected linear error correcting codes, such as a BCH code, uses relatively low-speed circuitry to determine syndromes and corresponding error locations for correcting the code. In a specific embodiment of a BCH linear cyclic invariant error... | 09/18/1990 |
| 4958162 | Near isotropic circularly polarized antenna An antenna for transmitting and/or receiving circularly polarized (CP) electromagnetic radiation throughout a substantial portion of a sphere. A cylindrical waveguide (3,5) is associated with a transmit portion and a receive portion of the antenna, respec... | 09/18/1990 |
| 4955131 | Method of building a variety of complex high performance IC devices A novel packaging system for VLSI circuits allows low-cost construction and maintenance of complex high density high-performance devices with low power requirements. The devices can be individually created by software means from a small selection of stand... | 09/11/1990 |
| 4955129 | Method of making an integral heater for composite structure A heater for a composite structure (2) is integrally formed as part of the structure (2) itself. The structure (2) comprises a layer of conductive fibers (30), such as a carbon felt mat, embedded in a nonconductive matrix (31). Electrodes (11, 12) inject ... | 09/11/1990 |
| 4952835 | Double saggital push stroke amplifier A piezoelectric motor actuated amplifier mechanism that utilizes a pair of saggital linkages having one relatively fixed saggital midpoint and joined at their end points to obtain a doubled amplification factor push stroke output from one relatively movab... | 08/28/1990 |
| 4939723 | Bit-channel multiplexer/demultiplexer An efficient method for time-division multiplexing multiple digital signals into a single data stream for switching and/or transmission of information to a remote location. The apparatus according to the invention receives as input, to a multiplexer, a pl... | 07/03/1990 |
| 4937659 | Interconnection system for integrated circuit chips A novel packaging system for VLSI circuits allows low-cost construction and maintenance of complex high density high-performance devices with low power requirements. The devices can be individually created by software means from a small selection of stand... | 06/26/1990 |
| 4937658 | Interconnection system for integrated circuit chips A novel packaging system for VLSI circuits allows low-cost construction and maintenance of complex high density high-performance devices with low power requirements. The devices can be individually created by software means from a small selection of stand... | 06/26/1990 |
| 4933591 | Double saggital pull stroke amplifier A piezoelectric motor actuated amplifier mechanism that utilizes a pair of saggital linkages having one relatively fixed saggital midpoint and joined at their end points to obtain a doubled amplification factor pull stroke output from one relatively movab... | 06/12/1990 |
| 4931753 | Coplanar waveguide time delay shifter A time delay shifter imparts a constant time delay to an electromagnetic signal, preferably a signal at a microwave frequency, over a band of frequencies. The phase shift imparted to the signal is a linear function of frequency. The shifter comprises a fi... | 06/05/1990 |
| 4931942 | Transition control system for spacecraft attitude control A method for controlling transition from thruster control to momentum wheel control to minimize nutation angle and transition time in a three-axis stabilized spacecraft employing an internal body fixed-momentum wheel as an attitude stabilizer. The method ... | 06/05/1990 |
| 4927257 | Kinematic truss A telescope body is disclosed. The telescope body generally includes a primary structure for holding a mirror, a secondary structure for holding a means for receiving a reflection from the mirror, and a mounting section connecting the primary and secondar... | 05/22/1990 |
| 4918929 | Multi-detector dewar Consolidation of active and passive detectors (26, 28, 34) on a single coldfinger (20) in a dewar (10) is made possible by interposing between the detectors (26, 28, 34) an electromagnetic interference shield (64, 68) which acts as a waveguide filter bloc... | 04/24/1990 |
| 4918335 | Interconnection system for integrated circuit chips A novel packaging system for VLSI circuits allows low-cost construction and maintenance of complex high density high-performance devices with low power requirements. The devices can be individually created by software means from a small selection of stand... | 04/17/1990 |
| 4918691 | Testing of integrated circuit modules A novel packaging system for VLSI circuits allows low-cost construction and maintenance of complex high density high-performance devices with low power requirements. The devices can be individually created by software means from a small selection of stand... | 04/17/1990 |
| 4910154 | Manufacture of monolithic infrared focal plane arrays The manufacture of monolithic HgCdTe detectors and Si circuitry in an IR focal plane array is achieved by forming a protective layer of SiO2 or SiNx on a silicon wafer containing silicon circuits, etching steep-wall recesses into the... | 03/20/1990 |
| 4903033 | Planar dual polarization antenna A microwave-frequency microstrip antenna (10) simultaneously usable for both transmitting and receiving microwave-frequency signals that have dual orthogonally polarized components. The components may be either linearly or circularly polarized. A radiatin... | 02/20/1990 |
| 4898030 | Propellant remaining gaging system Apparatus for gaging the amount of liquid propellant remaining in a spacecraft (38) tank (1). The tank (1) comprises several preferably V-shaped channels 2A, 2B, 2C, 2D, hereinafter collectively referred to as "2" which communicate liquid propellant from ... | 02/06/1990 |
| 4888477 | Range measurement for active optical recognition devices An inexpensive, reliable analog ramped-voltage timing device (34, 36, 38, 40, 44) can be used in a laser echo ranging device capable of resolution in the decimeter range by using a very steep ramp (42), and a flash A/D converter (50) to instantaneouly sam... | 12/19/1989 |
| 4881796 | Single-aperture multi-spectral reticle projector A multi-spectral reticle projector coaxially projects two separate reticles at different wavelengths through a single aperture by using a lens system including a dichroic lens disposed coaxially between the two reticles. The visible light is reflected by ... | 11/21/1989 |
| 4879790 | Method of making a projectile having a driving band An ammunition round has a plastic molded driving band on a projectile. The driving band is mechanically attached to the projectile by opposing curved hooks bent toward one another and defining a restraining area therebetween. The seating area for the driv... | 11/14/1989 |
| 4875082 | Schottky barrier photodiode structure A Schottky barrier photodiode for detecting infrared radiation uses implantation of metal ions to form a metal silicide. An annular N+ type silicon guard ring is formed in a p-type silicon substrate. Metal ions are implanted into the exposed surface area ... | 10/17/1989 |
| 4875024 | Low loss power splitter Apparatus for dividing and combining electromagnetic energy, particularly at microwave frequencies. An input port (4) is positioned generally equidistant from each of n output ports (5,6;31,32,33 . . . ), where n is a finite integer greater than 1. n quar... | 10/17/1989 |
| 4871012 | Variable conductance thermal insulation blanket A variable conductance thermal insulation blanket regulates the temperature of a component (20) on the surface (32) of a spacecraft. The blanket comprises a sealed container (2) and a pressurized gas tank (10). When gas is introduced from the tank (10) in... | 10/03/1989 |
| 4848706 | Spacecraft attitude control using coupled thrusters An attitude control system for a three-axis controlled spacecraft (1) in which the location of thrusters causes significant cross-coupling torques. A thruster command conditioning electronics module (TCCEM) (3) is positioned between the conventional roll,... | 07/18/1989 |
| 4847625 | Wideband, aperture-coupled microstrip antenna A wideband, aperture-coupled microstrip antenna comprising a multilayer structure and including a feed layer, a ground plane including an aperture therethrough, a plurality of tuning layers formed of dielectric material, at least one of the tuning layers ... | 07/11/1989 |
| 4844845 | Dry mixture for production of pre-formed propellant charge The invention is directed to a formable homogeneous propellant composition and to a process employing same for production of a self-supporting formed propellant charge. The propellant composition comprises a mixture of propellant grains and solvent-filled... | 07/04/1989 |
| 4843400 | Aperture coupled circular polarization antenna A generally planar antenna for generating circularly polarized electromagnetic signals, particularly useful at microwave frequencies. Each antenna element comprises a single excitation aperture (7) cut in a planar conductive ground plane (9). Spaced apart... | 06/27/1989 |
| 4841867 | Discarding sabot projectile A discarding sabot projectile comprises: a subcaliber projectile; a discarding sabot means for providing a full caliber carrier for the projectile; a discarding sabot base abutting a rearwardly facing surface of the aft end of the projectile, which base is fre... | 06/27/1989 |
| 4808874 | Double saggital stroke amplifier A piezoelectric motor actuated amplifier mechanism that utilizes a pair of saggital linkages having one relatively fixed saggital midpoint and joined at their end points to obtain a doubled amplification factor output from one relatively movable saggital ... | 02/28/1989 |
