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McDonnell Douglas Corporation Patents
Assignee:
McDonnell Douglas Corporation
Address:
St. Louis, MO
No. of patents:
1101
Patents:


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Patent Number Title Of Patent Date Issued
5259925 Method of cleaning a plurality of semiconductor devices November 9, 1993
A method for cleaving semiconductor devices along planes accurately positioned. Resist is applied to a major surface of the semiconductor device and a mask is projected upon the resist covered major surface. The mask is opaque in those regions in which no cleave is desired. Following
5258770 Ground independent feed network for a multiterminal antenna November 2, 1993
A feed network for a multiterminal antenna which provides excitation to the antenna independent of ground. The feed network provides a voltage differential between terminals of the antenna instead of between a common ground point and a terminal so that the antenna achieves enhanced b
5253381 Hinged cargo ramp October 19, 1993
A cargo ramp for an aircraft is constructed of two segments which are hinged together so that they may articulate about the ramp pitch axis. The first of the two segments is hinged to the cargo bed of the aircraft so that it may articulate relative to the cargo bed, again in pitch. The
5250773 Microwave heating device October 5, 1993
There is provided by this invention an open-ended cavity microwave applicator apparatus for inducing current into an electrically conductive workpiece to be heated without need for the the applicator to be in contact with the workpiece. The microwave applicator is comprised of an ope
5241722 Ramp system September 7, 1993
A ramp system in a first embodiment incorporates a fore and an aft ramp section interconnected by a spindle which permits both pitch and roll movement of the aft section relative to the fore section. The fore section is hingedly connected to an aircraft structure at an opening thereof so
5240376 SPF/DB hollow core fan blade August 31, 1993
A hollow core fan blade for a gas turbine engine, having a continuous leading edge, is fabricated using a four-sheet superplastic forming/diffusion bonding process which results in a cost-efficient and lightweight, yet strong, structure. The rotor blade is comprised of a face sheet w
5229883 Hybrid binary optics collimation fill optics July 20, 1993
A cylindrical lens and a binary optical element for collimating with low optical aberrations an asymmetrically diverging input wavefront. The binary optical element is formed on a planar substrate on which a binary optical diffraction pattern is etched on the front surface thereof. The
5228643 Energy-exchange system incorporating small-diameter tubes July 20, 1993
A capillary-tube energy-exchange system for transferring energy to or from an aircraft surface is comprised of inlet and exhaust manifolds interconnected by a plurality of Teflon capillary tubes. Fluid, either liquid or gas, is transferred from the inlet manifold through the capillar
5227216 Fiber/metal laminate July 13, 1993
A fiber/metal laminate composite material is comprised of a plurality of metallic layers, reinforced with a plurality of fiber layers. The metallic layers are preferably aluminum, while the fibers in the fiber layers are preferably comprised of an aramid. The fibers are bi-directionally
5224917 Dielectric insert repair tool July 6, 1993
A tool for removing the dielectric insert of a metal shell electrical connector. The tool holds the shell and has a threaded press that pushes the dielectric insert out of the shell. The tool is then used to push a new dielectric insert into the shell. The tool is adjustable, such that i
5224668 Torque linkage damper July 6, 1993
An aircraft landing gear damping mechanism improvement of a damper containing piston means in a chamber of a housing, an orifice in the piston means and Belleville springs disposed in the chamber between the wall of the chamber and the piston means on opposite sides thereof. The impr
5223978 Hybrid diffractive/refractive lens June 29, 1993
A hybrid lens for collimating, with low optical aberrations, an asymmetrically diverging input wavefront. The hybrid lens has a front surface which serves to diffract the input wavefront and a back surface which serves to refract the wavefront. Embodiments are described comprised of
5223967 Secure communications system June 29, 1993
There is provided by this invention a secure fiber optic communication system based on the Sagnac interferometer that allows multiple authorized users to communicate on the system by modulation and detection of two counterpropagating light beams. The security of the system is based on a
5222095 Rib etched lens June 22, 1993
A semiconductor device structure capable of expanding a laser beam in one-dimension, collimating an expanding beam or focusing a nearly collimated beam. This semiconductor structure is typically comprised of three portions: a rib waveguide portion to propagate a beam of light in the
5222090 700-850 nanometer semiconductor diode laser June 22, 1993
Disclosed herein is a semiconductor laser device comprised of a semiconductor substrate having deposited thereon at least one quantum well active region comprised of an alloy of the group consisting of GaInAsP and AlGaInAs sandwiched between upper and lower confinement layers of AlGa
5218613 Visible diode laser June 8, 1993
A semiconductor laser device comprised of GaInP/AlGaInP materials which efficiently produces visible light output with improved carrier confinement and decreased threshold current density levels. The laser diode uses a strained quantum well positioned between a pair of graded index c
5217600 Process for producing a high emittance coating and resulting article June 8, 1993
Process for anodizing aluminum or its alloys to obtain a surface particularly having high infrared emittance by anodizing an aluminum or aluminum alloy substrate surface in an aqueous sulfuric acid solution at elevated temperature and by a step-wise current density procedure, followe
5212707 Array of diffraction limited lasers and method of aligning same May 18, 1993
A one-dimensional semiconductor laser array assembly typically comprising a one-dimensional semiconductor laser array, a heatsink upon which the laser array is bonded, and a lens assembly. The one-dimensional semiconductor laser array consists of a plurality of emitters with each emitter
5204520 Avalanche photodiode array integrated with etched silicon divider April 20, 1993
An avalanche photodiode array comprising a plurality of photosensitive regions in a light sensitive body with each photosensitive region having a semiconductor junction. Between said photosensitive regions, there are a plurality of low response regions separating the photosensitive regio
5204490 Laser diode apparatus for initiation of explosive devices April 20, 1993
A laser diode apparatus for initiating explosives or other pyrotechnic devices that has capability of checking both the laser diode operation and the optical fiber continuity between the laser diode source and the explosives required to be detonated. Power isolation circuits are provided
5204161 Fabrication of panel structure April 20, 1993
The structure and process for making a metallic panel structure from a plurality of core panels each comprised of a pair of sheets of superplastic material welded together along a plurality of weld lines. The core panels are joined together, with the weld lines of one core panel posi
5197077 Low divergence laser March 23, 1993
A semiconductor ridge diode laser, capable of providing a single mode, high power laser output having a low divergence in the far field, comprised of a plurality of semiconductor layers having three quantum wells therein. The layers of the diode laser are doped such that the PN junction
5196228 Laser resistant elastomer composition and use in coating process March 23, 1993
An elastomeric composition having high resistance to laser radiation and to thermal radiation, which consists essentially of a phenylpolysiloxane and an additive selected from the group consisting of titanium dioxide, boron nitride, and mixtures thereof, particularly titanium dioxide, in
5194989 Dielectric combiner including first and second dielectric materials having indices of refraction March 16, 1993
There is provided by this invention an apparatus for combining a reflected image in a heads-up-display system with an unobstructed view of the outside world and a system for providing a heads-up-display. The heads-up-display system utilizes a dielectric combiner in order to eliminate
5194791 Compliant stereo vision target March 16, 1993
A compliant device attaching to the end of a robot arm and used in conjunction with a stereo vision system. The compliant device compensating for misalignment error in six degrees of freedom, that is x, y, z, pitch, yaw, and clocking (roll) between the end of the robot arm and a lock-on
5192037 Double-pivoting deployment system for aerosurfaces March 9, 1993
A double-pivoting deployment system for aerosurfaces, such as wings or fins, for use on aerospace vehicles. Each aerosurface has an inner segment and an outer segment. The inner segment is pivotally connected at a first axis of rotation to the support structure of the aerospace vehicle.
5191689 Grommet installation device March 9, 1993
A grommet installation device consisting of an installation tool and a backup tool. The backup tool incorporates a retractable rod for guiding and aligning the grommet sleeve throughout installation. The installation tool flares and swages the grommet sleeve over a grommet spacer, affixi
5191614 Secure communication system March 2, 1993
There is provided by this invention a secure fiber optic communication system based on the Sagnac interferometer having features that make the system intrusion resistant. The security of the system is based on placing a random phase modulator at the midpoint of the communications loop th
5185381 Foam absorber February 9, 1993
A foam absorber having electromagnetic energy attenuation characteristics comprising an open cell reticulated polyurethane foam impregnated with a conductive ink applied to a surface of the foam substrate. The conductive ink is applied as by spraying to a surface of the foam, coating suc
5184366 Aircraft cargo handling system February 9, 1993
An on-board aircraft cargo handling system comprises a plurality of tines which are mounted within a cargo ramp and beneath its surface and are capable of extension aft of the ramp across a truck bed or the like. The tines have a plurality of rollers extending above their top surfaces fo
5181647 Method and tooling for fabricating monolithic metal or metal matrix composite structures January 26, 1993
The tool and the process for forming structural shapes from multiple elements of either a monolithic or metal matrix composition by either diffusion bonding or brazing the metal or metal composites under temperature and pressure. The pressure is applied by expanding superplastic meta
5176326 Turbulent droplet generator with boom mounted pitot pump collector January 5, 1993
A fluid ejection nozzle is disclosed which facilitates a wide distribution of fluid therefrom and which permits the fluid flow rate to be easily adjustable. The nozzle is particularly adapted to a heat rejection system useful in a space environment. The nozzle includes a flow distributor
5174143 Surface densification of porous materials December 29, 1992
A method for producing a densified layer on the surface of a porous material having gas-containing voids which includes: (1) heating the outer surface of the porous material to cause localized removal of the gas contained in the voids so that the voids coalesce and form surface-conne
5174023 Method for repairing an electrical connector December 29, 1992
A method for removing the dielectric insert of a metal shell electrical connector. The tool holds the shell and has a threaded press that pushes the dielectric insert out of the shell. The tool is then used to push a new dielectric insert into the shell. The tool is adjustable, such that
5168635 Conformable tool December 8, 1992
An apparatus and method for approximating a workpiece contour. The conformable tool includes a support plate having a plurality of apertures and a two dimensional arrangement of a plurality of pins, each of which is slidably disposed within a corresponding aperture of the support plate.
5165829 End-effector apparatus November 24, 1992
An end-effector apparatus, used in combination with a machining device and robotic arm, for use in template-guided robotic machining a workpiece. The end-effector apparatus includes a holding means which holds a guide bushing against the machining template in a consistent orientation wit
5161301 Double-barrelled contact tool and method of using same November 10, 1992
A double-barreled tool for inserting and extracting electrical contacts includes an inner barrel and an outer barrel, the inner barrel being coaxial with the outer barrel and fully retractable therein. Each barrel has an elongated slot which are in alignment with one another. A means is
5158720 Method and system for continuous in situ monitoring of viscosity October 27, 1992
An apparatus and method for in situ monitoring the viscosity and cure of resins using viscosity dependent fluorescence uses a fiber optic waveguide to introduce light to the resin of a wavelength exciting fluorescence and to conduct the emitted light to a monitor. The emitted light param
5154777 Advanced survivable space solar power system October 13, 1992
A photovoltaic electric power system for use in space. A self contained sun powered electric power generating system comprising a fresnel mirror array made up of a plurality of quadrilateral mirrors individually mounted on a generally flat supporting structure with the mirrors aimed at a
5153938 Acceleration protection ensemble and method October 13, 1992
An acceleration protection ensemble protects a person aboard an aircraft from the effects of acceleration. One embodiment comprises a liquid impervious cavity having a flexible interior layer that presses against the body. The cavity substantially covers the person's shins, front thi
5151222 Foam absorber September 29, 1992
A foam absorber having electromagnetic energy attenuation characteristics comprising an open cell reticulated polyurethane foam impregnated with a conductive ink applied to a surface of the foam substrate. The conductive ink is applied as by spraying to a surface of the foam, coating suc
5150748 Advanced survivable radiator September 29, 1992
A heat pipe radiator coating of a fibrous material provides protection for the radiator, such as a heat pipe, pumped loop, etc., while allowing good emissivity and heat rejection. Fibers are constructed from fiberglass, glass, quartz, saphire, diamond, carbon carbon, tantalum, stainless
5141146 Fabrication of superplastically formed trusscore structure August 25, 1992
Process for fabricating a superplastically formed trusscore structure from a pair of core elements each formed of a pair of metal sheets of a superplastic material, e.g. titanium. The sheets of each core element are welded together along pairs of closely spaced weld lines, one core eleme
5140716 Cargo rail system for an aircraft August 25, 1992
Fixed parallel cargo rails are positioned on the cargo bed floor of an aircraft, spaced sufficiently to fit a pallet snugly therebetween. A plurality of collinear slots arranged along the length of the cargo bed floor are positioned just inboard of each rail. The slots are evenly spa
5138946 Laser diode apparatus for initiation of explosive devices August 18, 1992
A laser diode apparatus for initiating explosives or other pyrotechnic devices that has capability of checking both the laser diode operation and the optical fiber continuity between the laser diode source and the explosives required to be detonated. Power isolation circuits are provided
5133515 Pitch stabilization system for an ejection seat July 28, 1992
A pitch stabilization system for an ejection seat includes a gyroscope rotor assembly having a pinion gear attached to two rotor wheels. The rotor assembly is mounted with a geometry to precess in response to change in the pitch rate of the seat. Precession of the gyro rotor rotates a
5131793 Feed mechanism July 21, 1992
A feed mechanism, for use with a right angle drill, capable of feeding a drill bit into a workpiece at variable thrust and position. The feed mechanism, attached to the cutting end of the drill, utilizes the mechanical advantage of a threaded member to feed the drill bit into and out
5129248 Gas mass superplastic forming July 14, 1992
An apparatus and method for controlling the superplastic forming process by measuring and controlling the gas mass flow rate of the gas displacing the blank being formed.
5127896 Anthropomorphic tank suit July 7, 1992
This invention is an integrated anthropomorphic g-suit, with a breathing regulator and means for protecting the user of the suit from hostile environments. The suit has a flexible, distensible, impermeable inner liner that conforms to a user's body, and a flexible, impermeable, nondi
5125056 Fiber optic connector assembly June 23, 1992
There is provided by this disclosure a fiber optical connector assembly for mating and demating optical fibers in a contaminated air or an underwater environment. Elastomeric seals having normally closed apertures cover the mating end of the male and female connecting members to seal and
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