Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 4443743 | Two axis actuator A multiaxis actuator is described which provides force along at least two translational axes through the interaction of multiple windings on a single platen which interact with the field poles of a magnetic member spaced apart a sufficient distance to all... | 04/17/1984 |
| 4398248 | Adaptive WSI/MNOS solid state memory system The disclosed solid state mass memory system comprises an adaptive, wafer scale integration, nonvolatile mass memory system organized as a stack of individual memory wafer modules with a memory system control means.... | 08/09/1983 |
| 4387964 | Electron addressed liquid crystal light valve This light modulating device comprises three subsystems: an electron gun which produces a scanning constant intensity electron beam, a liquid crystal cell, and an appropriate optical system to deliver light to and from the modulating effects of the liquid... | 06/14/1983 |
| 4383905 | System for hydrodynamic compensation for electrophoresis crescent distortion Crescent distortion of output samples collected during a continuous free flow electrophoresis separation process is reduced by providing means with the electrophoresis chamber whereby lateral flow across the chamber may be controllably varied to introduce... | 05/17/1983 |
| 4380075 | Mode stable injection laser diode High power operation in conjunction with excellent mode stability is rendered possible by a unique configuration comprising the use of two injection laser diode sections in a crossed-junction configuration.... | 04/12/1983 |
| 4376987 | Threshold referenced MNOS sense amplifier An MNOS nonvolatile memory array employing single-element-per-bit storage and two-element-per-bit sensing utilizing a threshold referenced sense amplifier is organized such that the two legs of the sensing circuit are in substantial electrical balance dur... | 03/15/1983 |
| 4371870 | Fail transparent LCD display with backup A display system is constructed such that upon failure of the primary display which comprises a Liquid Crystal Display (LCD) that becomes transparent upon failure, a backup display located directly beneath the primary display becomes visible to the displa... | 02/01/1983 |
| 4326847 | Launch environment simulator Firing and subsequent aiming-tracking of a tube-launched projectile are realistically simulated by a launch environment simulator comprising a launch tube, means for delivering a combustible gas mixture to the launch tube, means for igniting the gas withi... | 04/27/1982 |
| 4315610 | Optical image stabilizing system Apparatus for stabilizing the image of an electro-optical sensor system. The stabilizing apparatus includes a mounting structure subjected to various rotational and translational vibrations of various sorts. The mounting structure supports a platform on w... | 02/16/1982 |
| 4305057 | Concave quadratic aircraft attitude reference display system A Heads-Up Display system which displays an attitude reference to pilots in order to provide a reference display system as a primary flight instrument. The Heads-up Display system uses a pitch ladder system based on Euler angle data which eliminates the e... | 12/08/1981 |
| 4298176 | Remote refueling station A refueling system, for use in a tanker aircraft from a remote location without a direct out-the-window view of the refueling operation, having enhanced three-dimensional viewing of the refueling operation by use of multiple video cameras, polarized video... | 11/03/1981 |
| 4286927 | Hydraulic power transfer unit A multi-piston motor pump for the transfer of hydraulic energy from one hydraulic system to another without the transfer of fluid therebetween. A plurality of pistons are maintained in predetermined phase by a nutator mechanism or spider which is then use... | 09/01/1981 |
| 4284963 | Etalon laser diode A laser diode suitable for integrated and fiber optic applications requiring single transverse and single longitudinal mode operation. The single transverse mode is provided by making a gallium arsenide double heterostructural laser diode with a narrow st... | 08/18/1981 |
| 4282627 | Large clearance fairlead grommet A one piece fairlead grommet for protecting an aircraft control cable where penetrating a bulkhead or cable support panel. The fairlead grommet has a generally cylindrical body with frustro conically shaped flanges and a through-slot, generally, longitudi... | 08/11/1981 |
| 4281447 | Detachable tool interface system for a robot A mechanical system for allowing removable attachment of tools to a robot which is capable of accommodating positional and angular errors between the tool and the robot during attachment and release of the tool by using tapered attachments.... | 08/04/1981 |
| 4279995 | Selective salmonella carbohydrate and medium constructed therefrom 2-Deoxy-D-Ribose is used as a carbohydrate source which selectively differentiates all of the Salmonella spp., Arizona spp., and 60% of the Citrobacter freundii from other members of the Enterobacteriaceae family. By combining the 2-Deoxy-D-Ribose with Ci... | 07/21/1981 |
| 4277200 | Structure to retard fretting and method of manufacture Fretting caused by movement of adjacent structural members at high stress is prevented by providing a tetrafluoroethylene layer between the moving surfaces. The tetrafluoroethylene may be applied directly to the mating surfaces of parts or on the surfaces... | 07/07/1981 |
| 4273481 | Hydraulic stop An automatic hydraulic stop for use with a numerical control machine and cutting tool. The stop senses the distance to a work piece, limits the depth of penetration of the tool into a work piece and provides protection for inadvertent travel of spindle of... | 06/16/1981 |
| 4273006 | Aircraft horizontal stabilizer drive A mechanical power transmission apparatus, of the differential gear type, for actuating an airplane control surface requiring two independent actuator inputs to a single control surface. Predetermined, proportionately variable, asymmetric loads between th... | 06/16/1981 |
| 4268328 | Stripped nitride MOS/MNOS process A method for fabricating MOS and MNOS transistors on a common substrate which strips the silicon nitride required for MNOS operation away from areas where it is not required. The removal of the nitride from the MOS gate eliminates cumulative threshold ins... | 05/19/1981 |
| 4254406 | Integrating analog-to-digital converter An integrating analog-to-digital converter particularly adapted to measure inertial instrument outputs for strap-down navigation. In the converter, an input signal is summed with a number of precisely quantized voltage pulses and is integrated. An error s... | 03/03/1981 |
| 4254477 | Reconfigurable memory circuit The disclosed device uses an interconnect switch for the selective coupling of serial memory elements in series with other memory elements. A control unit may test elements, designate some of the elements as operable for use and designate other elements a... | 03/03/1981 |
| 4251174 | Roller hold down A roller hold down is designed to restrain parts being cut from a stack of flat sheets. The roller hold down eliminates the need for secondary fastening means to restrain the parts during the cutting operation. The parts are restrained in position on a fl... | 02/17/1981 |
| 4248105 | Horizontal stabilizer drive A mechanical power transmission apparatus, of the differential gear type, for actuating an airplane control surface requiring two independent actuator inputs to a single control surface. Asymmetric loading to the control surface is accommodated by a mecha... | 02/03/1981 |
| 4244661 | Fastener means and joint for laminates A galvanically compatible flanged sleeve is inserted within a close fitting hole in a structural joint wherein at least one of the structural members is a composite laminate. The sleeve is then expanded outwardly into a high interference fit by the insert... | 01/13/1981 |
| 4243192 | Ball pivot thrust bearing flex joint A ball pivot thrust bearing flex joint assembly having an inner race member and an outer race member, the inner surface of the outer race member being a concave spherical self lubricating surface which provides a maximum envelopment of the complementary c... | 01/06/1981 |
| 4229886 | Microwave heated vacuum dryer for powders A source of microwave energy is introduced into a pressure vessel in which a vacuum is drawn. Powdered materials to be dried are introduced and removed from the vessel by screw conveyors which are long enough so that in combination with the material, they... | 10/28/1980 |
| 4225259 | Pallet coupler A coupler for use in joining cargo pallets by their attach rings. The coupler, normally used in pairs, provides for uniform spacing of joined pallets and bendability between pallets, permitting the joined pallets to traverse crests and valleys without put... | 09/30/1980 |
| 4221619 | Sponge carrier adhesive process A flexible, e.g. polyurethane, open cell foam sheet is impregnated with a controlled amount of a liquid polymerizable resin system which cures at ambient temperature, and the resin impregnated sheet is immediately chilled at a suitably reduced temperature... | 09/09/1980 |
| 4217397 | Metallic sandwich structure and method of fabrication The structure and the process for making a metallic sandwich structure in which metal worksheets, preferably made from titanium alloy, are joined in a preselected pattern by an intermittent or discontinuous weld. The joined sheets are sealed by a continuo... | 08/12/1980 |
| 4202035 | Modulo addressing apparatus for use in a microprocessor A microprocessor with a two bus structure and modulo addressing hardware which converts any section of main memory into an apparent circular address space for use as a five-fold data register. The modulo addressing hardware has a capability for circularly... | 05/06/1980 |
| 4188670 | Associative interconnection circuit The disclosed apparatus uses an associative memory technique for the selective coupling of circuit elements to a data bus wherein each element is assigned an associative address and is coupled to the data bus when it receives said address on its address l... | 02/12/1980 |
| 4184749 | Wide angle narrow bandpass optical filter system A spherical lens element and a concentric lens element receive light, in that order, from a wide field of view, and diverge all rays so that upon leaving said concentric element, the angles of all rays approximate that of radial lines. This light is then ... | 01/22/1980 |
| 4183480 | Automatic sway bracing rack A store carrier having automatic sway bracing which includes two swaybraces located symmetrically at a span larger than a pair of inner suspension hooks and smaller than a pair of outer suspension hooks. When a store is loaded on either the inner or outer... | 01/15/1980 |
| 4180943 | Dual lost motion mechanism for an aircraft door A pair of four-bar linkages employing lost motion incorporated into an aircraft door construction which simultaneously are operable by a main door handle so that the output crank of each linkage has a dwell which is sequenced such that the operation of th... | 01/01/1980 |
| 4177029 | Apparatus for continuously fabricating three-dimensional filament reinforced foam insulation A method and apparatus for continuously fabricating three-dimensional (3D) filament reinforced foam insulation slabs. Rows of X or longitudinal filaments are fed longitudinally into a machine in spaced, stacked horizontal planes. Rows of Y or transverse f... | 12/04/1979 |
| 4172469 | Soft seat check valve A check valve having dual seats and dual poppets which act in a series arrangement as a double valve. One seat poppet combination employs an o-ring type seal and the second seat poppet arrangement employs a metal-to-metal sealing surface. Each seat poppet... | 10/30/1979 |
| 4172470 | Soft seat valve A zero leakage valve, employing a radially squeezed elastomeric o-ring seal. In opening and closing, the o-ring is transferred from the valve element to a following retainer sleeve. The transfer is facilitated by relieving the squeeze on the o-ring coinci... | 10/30/1979 |
| 4155970 | Method for making a hollow composite using a destructible core A method of making a high temperature fluted core composite radome structure.... | 05/22/1979 |
| 4150836 | Backed boss seal fitting A fitting for establishing a sealed connection with a boss which fitting includes a concentric depression about the innermost portion of its boss engaging surface, which retains a backup ring of special cross-section by means of an inwardly facing circumf... | 04/24/1979 |
