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| Number | Title | Issue Date |
| 4580922 | Vertex fittings derived from a master fitting A master fitting is disclosed adapted to be subdivided into a set of vertex fittings for use in a truss structure which comprises a plurality of frame elements. Interchangeable vertex fittings with accurately aligned surfaces, slots and holes are provided... | 04/08/1986 |
| 4576770 | Method of manufacturing a turbomachinery rotor A composite, single material, one-piece turbomachinery rotor constructed of fibers bonded in a matrix is disclosed together with a method of manufacture thereof.... | 03/18/1986 |
| 4575493 | Low expansion, multiband transmitting glasses and glass-ceramics Compositions of metal oxides which may be melted and cooled to produce glasses are disclosed. The glasses may be heat treated to produce glass-ceramics. The glasses have good transmittances for electromagnetic radiation in the ultraviolet, infrared and vi... | 03/11/1986 |
| 4575679 | Automatic load shed control for spacecraft power system An automatic load shed control for a spacecraft power system employs a selectable one of a plurality of charging gains to approximate a state of charge in a secondary battery system. An ampere hour meter is initialized when the battery system is known to ... | 03/11/1986 |
| 4538834 | Tubular assembly for transferring fluids A tubular assembly for transferring fluids in relative isolation from the ambient environment is disclosed. The assembly includes at least two similar conduit sections. Each conduit section has contoured ends which may be frusto-conical in shape. Means fo... | 09/03/1985 |
| 4525800 | Enhanced reliability data storage system with second memory for preserving time-dependent progressively updated data from destructive transient conditions A time delay memory system is used for enhancing the reliability of a data processing system or the like, wherein the critical information contents of temporary storage means are preserved from destruction by the adverse effects of an externally originate... | 06/25/1985 |
| 4518175 | Tubular assembly including insulated conduits and couplers for the transfer of high temperature and high pressure fluids A tubular pipe assembly for hot or cold fluid transfer which assembly includes a plurality of insulated conduit sections joined together, end to end, with male and female couplings. Each conduit section has concentric inner and outer pipes with insulation... | 05/21/1985 |
| 4442165 | Low-density thermally insulating carbon-carbon syntactic foam composite A low-density, thermally insulating composite which is ablation resistant and impervious to gases and liquids. The composite is comprised of a carbon-carbon syntactic foam material which is covered and penetrated by pyrolytic carbon, in order to increase ... | 04/10/1984 |
| 4400825 | Adjustable slit radiographic apparatus A system is provided for facilitating the use of an in-motion slit radiographic technique to inspect 3-dimensional composite materials. The system includes a lead lined device that is adjustable to form various slit shaped and size openings. When used in ... | 08/23/1983 |
| 4399547 | Receiver of pulsed phase modulated signals A receiver of pulsed phase modulated signals is disclosed. These signals are produced by switching a reactance on and off a power line. The receiver produces a sinusoidal current in phase with the current on the power line and a sinusoidal voltage nominal... | 08/16/1983 |
| 4398200 | Feed apertures with crosspolarization compensation for linear polarization The crosspolarization components radiated by adjacent orthogonally linearly polarized feed horns of a reflector antenna system are compensated by structural modifications incorporated in the feed horns. In a first embodiment, the modified feed horns have ... | 08/09/1983 |
| 4374081 | Cure of epoxy systems at reduced pressures Epoxide compounds can be cured without resorting to the usual elevated temperatures by reducing the ambient pressure to 4.79 Pa or lower. This is particularly useful in potting circuitry.... | 02/15/1983 |
| 4351867 | Thermal insulation composite of cellular cementitious material An improved material particularly suited for the thermal insulation of building structures, such as residential housing, and a process for making the same, are disclosed. The thermally insulating composite comprises a low-density, cellular, fiber-containi... | 09/28/1982 |
| 4344235 | Levitated ball inclinometer The circuitry and structure of a levitated ball inclinometer are disclosed. A ferromagnetic ball is centerized between pairs of electromagnets by electromagnetic forces of magnitudes sufficient to offset the gravitational forces imposed on the ball. The e... | 08/17/1982 |
| 4331080 | Composite high explosives for high energy blast applications A novel composite explosive comprised of conventional explosive material and a mixture of boron and at least one other metal is disclosed. The other metal must be capable of exothermically reacting with boron to produce intermetallic compound and an energ... | 05/25/1982 |
| 4310996 | Cement reinforced gypsum foam with mineral wool An improved material particularly suited for the thermal insulation of building structures such as residential housing. The material comprises an inorganic, low-density cellular thermally insulating foam comprising a gypsum matrix having minute cavities h... | 01/19/1982 |
| 3947726 | Reverse voltage surge protection for high-voltage thyristors A thyristor is shunted by a metal oxide varistor in series with switching means which switches abruptly from a normal high-resistance state to a low-resistance, current conducting state when the thyristor is subjected to a transient surge of reverse bias ... | 03/30/1976 |
| 3944890 | Static overcurrent relay A solid state protective device is disclosed which monitors an electric quantity such as current in a protected circuit and which responds to abnormal conditions by activating a circuit breaker or warning device after a period of time which is related by ... | 03/16/1976 |
| 3944919 | Direct current measuring system for rectifiers A DC measuring circuit for power rectifiers is described wherein primary line current is utilized to measure direct current output. In the measuring circuit line current transformers are connected to a multiphase instrument rectifier through a phase shift... | 03/16/1976 |
