Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 4720370 | Nuclear reactor fuel structure containing uranium alloy wires embedded in a metallic matrix plate A flat or curved plate structure, to be used as fuel in a nuclear reactor, comprises elongated fissionable wires or strips embedded in a metallic continuous non-fissionable matrix plate. The wires or strips are made predominantly of a malleable uranium al... | 01/19/1988 |
| 4718361 | Alkali injection system with controlled CO2 /O2 ratios for combustion of coal A high temperature combustion process for an organic fuel containing sulfur n which the nitrogen of air is replaced by carbon dioxide for combination with oxygen with the ratio of CO2 /O2 being controlled to generate combustion temper... | 01/12/1988 |
| 4718322 | Multiple resonant railgun power supply A multiple repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. A plurality of serially connected paired parallel rails are powered by similar power supplies. Each supply comprises... | 01/12/1988 |
| 4718321 | Repetitive resonant railgun power supply A repetitive resonant railgun power supply provides energy for repetitively propelling projectiles from a pair of parallel rails. The supply comprises an energy storage capacitor, a storage inductor to form a resonant circuit with the energy storage capac... | 01/12/1988 |
| 4719375 | High resolution digital delay timer Method and apparatus are provided for generating an output pulse following a trigger pulse at a time delay interval preset with a resolution which is high relative to a low resolution available from supplied clock pulses. A first lumped constant delay (20... | 01/12/1988 |
| 4719436 | Stabilized chromium oxide film Stabilized air-oxidized chromium films deposited on high-power klystron ceramic windows and sleeves having a thickness between 20 and 150Å are useful in lowering secondary electron emission yield and in avoiding multipactoring and window failure due to o... | 01/12/1988 |
| 4717420 | Method for converting uranium oxides to uranium metal A process is described for converting scrap and waste uranium oxide to uranium metal. The uranium oxide is sequentially reduced with a suitable reducing agent to a mixture of uranium metal and oxide products. The uranium metal is then converted to uranium... | 01/05/1988 |
| 4717627 | Dynamic high pressure process for fabricating superconducting and permanent magnetic materials Shock wave formation of thin layers of materials with improved superconducting and permanent magnetic properties and improved microstructures.... | 01/05/1988 |
| 4716364 | Monitoring transients in low inductance circuits A pair of flat cable transmission lines are monitored for transient current spikes by using a probe connected to a current transformer by a pickup loop and monitoring the output of the current transformer. The approach utilizes a U-shaped pickup probe whe... | 12/29/1987 |
| 4714661 | Molten carbonate fuel cell A molten electrolyte fuel cell with an array of stacked cells and cell enclosures isolating each cell except for access to gas manifolds for the supply of fuel or oxidant gas or the removal of waste gas, the cell enclosures collectively providing an enclo... | 12/22/1987 |
| 4714586 | Method of preparing a dimensionally stable electrode for use in a MCFC A method is disclosed for preparing a dimensionally stable electrode structure, particularly nickel-chromium anodes, for use in a molten carbonate fuel cell stack. A low-chromium to nickel alloy is provided and oxidized in a mildly oxidizing gas of suffic... | 12/22/1987 |
| 4715038 | Optically pulsed electron accelerator An optically pulsed electron accelerator can be used as an injector for a free electron laser and comprises a pulsed light source, such as a laser, for providing discrete incident light pulses. A photoemissive electron source emits electron bursts having ... | 12/22/1987 |
| 4714848 | Electrically induced mechanical precompression of ferroelectric plates A method of electrically inducing mechanical precompression of a ferroelectric plate covered with electrodes utilizes the change in strains of the plate as functions of applied electric field. A first field polarizes and laterally shrinks the entire plate... | 12/22/1987 |
| 4714663 | Sulfonated polysulfone battery membrane for use in corrosive environments For batteries containing strong oxidizing electrolyte and a membrane separating two electrolyte solutions, e.g., a zinc ferricyanide battery, an improved membrane is provided comprising an oxidative resistant, conductive, ion-selective membrane fabricated... | 12/22/1987 |
| 4714585 | Interlocking egg-crate type grid assembly Disclosed is an interlocking egg-crate hexagonal grid for supporting a nuclear fuel pin in a hexagonal array. The grid is formed from strips bent at an angle of about 120° at each vertex. Over some faces of each hexagonal cell the strips are coplanar but... | 12/22/1987 |
| 4713208 | Spheromak reactor with poloidal flux-amplifying transformer An inductive transformer in the form of a solenoidal coils aligned along the major axis of a flux core induces poloidal flux along the flux core's axis. The current in the solenoidal coil is then reversed resulting in a poloidal flux swing and the convers... | 12/15/1987 |
| 4712063 | Method and apparatus for measuring areas of photoelectric cells and photoelectric cell performance parameters A laser scanning system for scanning the surface of a photovoltaic cell in a precise, stepped raster pattern includes electric current detecting and measuring equipment for sensing the current response of the scanned cell to the laser beam at each stepped... | 12/08/1987 |
| 4712074 | Vacuum chamber for containing particle beams A vacuum chamber for containing a charged particle beam in a rapidly changing magnetic environment comprises a ceramic pipe with conducting strips oriented along the longitudinal axis of the pipe and with circumferential conducting bands oriented perpendi... | 12/08/1987 |
| 4709848 | Method of bonding 1. A method of making a fuel-containing structure for nuclear reactors, comprising providing an assembly comprising a plurality of fuel units; each fuel unit consisting of a core plate containing thermal-neutron-fissionable material, sheets of cladding me... | 12/01/1987 |
| 4710222 | Method for removal of plutonium impurity from americium oxides and fluorides Method for removal of plutonium impurity from americium oxides and fluorides. AmF4 is not further oxidized to AmF6 by the application of O2 F at room temperature, while plutonium compounds present in the americium sample a... | 12/01/1987 |
| 4710343 | Nuclear breeder reactor fuel element with silicon carbide getter An improved cesium getter 28 is provided in a breeder reactor fuel element or pin in the form of an extended surface area, low density element formed in one embodiment as a helically wound foil 30 located with silicon carbide, and located at the upper end... | 12/01/1987 |
| 4708060 | Semiconductor bridge (SCB) igniter In an explosive device comprising an explosive material which can be made to explode upon activation by activation means in contact therewith; electrical activation means adaptable for activating said explosive material such that it explodes; and electrical ci... | 11/24/1987 |
| 4707132 | Process for sensing defects on a smooth cylindrical interior surface in tubing The cylindrical interior surface of small diameter metal tubing is optically inspected to determine surface roughness by passing a slightly divergent light beam to illuminate the entire interior surface of the tubing. Impingement of the input light beam c... | 11/17/1987 |
| 4706651 | Solar solids reactor A solar powered kiln is provided, that is of relatively simple design and which efficiently uses solar energy. The kiln or solids reactor includes a stationary chamber with a rearward end which receives solid material to be reacted and a forward end throu... | 11/17/1987 |
| 4706581 | Fossil fuel furnace reactor A fossil fuel furnace reactor is provided for simulating a continuous processing plant with a batch reactor. An internal reaction vessel contains a batch of shale oil, with the vessel having a relatively thin wall thickness for a heat transfer rate effect... | 11/17/1987 |
| 4706542 | Low voltage arc formation in railguns A low voltage plasma arc is first established across the rails behind the projectile by switching a low voltage high current source across the rails to establish a plasma arc by vaporizing a fuse mounted on the back of the projectile, maintaining the volt... | 11/17/1987 |
| 4707322 | Beryllium-7 labeled carbon particles and method of making Beryllium-7 labeled carbon particles made from the proton irradiation of carbon materials, preferably from dry carbon black are disclosed. Such particles are useful as gamma emitting radiotracers.... | 11/17/1987 |
| 4707668 | Method and apparatus for transferring and injecting rf energy from a generator to a resonant load Improved apparatus and method are provided for the coherent amplification and injection of radio-frequency (rf) energy into a load cavity using a plurality of amplifier tubes. A plurality of strip line cavities (30, 32, 34, 36, 40, 42, 44) are laterally j... | 11/17/1987 |
| 4705252 | X, Y, Z positioner A three-axis control for precisely and conveniently adjusting items such as irrors and lenses is disclosed. The adjuster apparatus includes a vertical stack of three rotatable adjusters. Rotation of the first effects vertical translation, whereas the secon... | 11/10/1987 |
| 4705108 | Method for in situ heating of hydrocarbonaceous formations A method for extracting valuable constituents from underground hydrocarbonaceous deposits such as heavy crude tar sands and oil shale is disclosed. Initially, a stratum containing a rich deposit is hydraulically fractured to form a horizontally extending ... | 11/10/1987 |
| 4704871 | Magnetic refrigeration apparatus with belt of ferro or paramagnetic material A magnetic refrigerator operating in the 12 to 77K range utilizes a belt which carries ferromagnetic or paramagnetic material and which is disposed in a loop which passes through the center of a solenoidal magnet to achieve cooling. The magnetic material ... | 11/10/1987 |
| 4705948 | Closed-loop pulsed helium ionization detector A helium ionization detector for gas chromatography is operated in a constant current, pulse-modulated mode by configuring the detector, electrometer and a high voltage pulser in a closed-loop control system. The detector current is maintained at a fixed ... | 11/10/1987 |
| 4705987 | Very high efficacy electrodeless high intensity discharge lamps An electrodeless arc lamp comprises an outer jacket hermetically sealing and thermally protecting an arc tube inside which has an upwardly convex bottom center section. The absence of chemically reactive electrode material makes it possible to use metal h... | 11/10/1987 |
| 4705947 | Pulsed helium ionization detection system A helium ionization detection system is provided which produces stable operation of a conventional helium ionization detector while providing improved sensitivity and linearity. Stability is improved by applying pulsed dc supply voltage across the ionizat... | 11/10/1987 |
| 4705563 | Methods and apparatus for reducing corrosion in refractory linings Methods and apparatus are provided for reducing corrosion in a refractory lining of a liquid-containing vessel used in direct steelmaking processes. The vessel operates at between about 1600° C. and about 1800° C. and an oxygen partial pressure of about... | 11/10/1987 |
| 4705585 | Production of glass or glass-ceramic to metal seals with the application of pressure In a process for preparing a glass or glass-ceramic to metal seal comprising contacting the glass with the metal and heat-treating the glass and metal under conditions whereby the glass to metal seal is effected and, optionally, the glass is converted to ... | 11/10/1987 |
| 4705349 | Optical switch An optical switching device (10) is provided whereby light from a first glass fiber (16) or a second glass fiber (14) may be selectively transmitted into a third glass fiber (18). Each glass fiber is provided with a focusing and collimating lens system (2... | 11/10/1987 |
| 4703884 | Steel bonded dense silicon nitride compositions and method for their fabrication A two-stage bonding technique for bonding high density silicon nitride and other ceramic materials to stainless steel and other hard metals, and multilayered ceramic-metal composites prepared by the technique are disclosed. The technique involves initiall... | 11/03/1987 |
| 4703921 | Rotary slot dog A clamp or dog is disclosed which preferably comprises a slotted stepped cylindrical body which is inserted into a hole in a workpiece and then fastened to a base or fixture using a screw which is inserted through the slot. The stepped configuration provi... | 11/03/1987 |
| 4704589 | Compact waveguide power divider with multiple isolated outputs A waveguide power divider (10) for splitting electromagnetic microwave power and directionally coupling the divided power includes an input waveguide (21) and reduced height output waveguides (23) interconnected by axial slots (22) and matched loads (25) ... | 11/03/1987 |
