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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
4837525 Transient waveform generator June 6, 1989
A transient waveform generator capable of generating waveforms having operator specifiable characteristics, including amplitude, rise time, and phase inversion.
4834493 Method of terminating an optical fiber May 30, 1989
A fiber-optic rotation sensor particularly adapted to be placed adjacent a drill head to measure the orientation of a drill string with respect to the axis of rotation of the earth during or after drilling for minerals such as oil and gas. The analog sensor is based on a Sagnac interfero
4833768 Curved SPF/DB sandwich fabrication May 30, 1989
The process for forming a metallic sandwich structure having a curved surface, particularly a surface curving about more than one axis, such as a quadric surface partially by direct displacement and partially by a fluid interface. Additionally, means to restrain the work sheets being
4833431 Triple-resonance pulse transformer circuit May 23, 1989
A triple resonance circuit is provided for improving the efficiency of high voltage pulses for pulse transformer applications. This circuit provides high transfer of energy when the normal mode frequencies of the coupled circuit are in the ratios of certain whole numbers.
4833351 Muliple axis actuator May 23, 1989
An improved two axis electromagnetically operated actuator is disclosed.
4827271 Dual frequency microstrip patch antenna with improved feed and increased bandwidth May 2, 1989
A dual frequency stacked microstrip patch antenna is comprised of a pair of circular radiating patches separated by a layer of dielectric, the two upper patches being further separated by another layer of dielectric from a pair of separated ground planes. A modal shorting pin extends bet
4821422 Magnetic wire holding device April 18, 1989
An improved measuring device for determining both major and pitch diameters of screw threads, gears, splines and the like, wherein attractable magnetic members attached to a movable spindle and fixed anvil serve to attract and retain gauging wires in their proper positions. An adjustable
4819720 Skin heat exchanger April 11, 1989
Avionics systems are cooled by circulating the heated air through an onboard closed loop system which includes a heat transfer envelope comprised of a liner and the fuselage of the flight vehicle. The liner keeps a constant, thermodynamically optimal passage height between the liner
4818004 Rotor blade sling April 4, 1989
A sling for attachment to a hoist for accurately adjusting the position of a helicopter rotor blade to ease the installation of the rotor blade in the rotor hub while attached to a helicopter. Blade orientation is adjustable in the sling by providing a spherical clamp which is attached
4814866 Schlieren color television image aperturing device March 21, 1989
A Schlieren-type color television projector utilizes a fiber optic rear projection screen (FORPUS) at an initial focal point to translate the spatially separated, converging rays of component colors produced by the Schlieren-type color television projector into a plurality of spatially
4811766 Explosively bonded expanded structure March 14, 1989
A method of superplastically forming aluminum alloy composites employs explosive bonding to produce strong, consistent bonds and annealing treatment to produce a fine microstructure in the bonded alloy sheets. The bonded alloy sheets having the fine microstructure can then be formed by
4804130 Chip carrier sealing and bonding fixture February 14, 1989
A method and apparatus is provided for sealing lids to chip carrier assemblies that increases the efficiency and reliability of batch processing operations for integrated circuit manufacturing. A mounting fixture captively locates individual chip carriers with their covers in a reces
4794979 Method for melting metal, particularly scrap, and forming metal billets January 3, 1989
The process for producing a metal billet or slab which is substantially homogeneous, fine grained and free of freezing or chemical segregation, which comprises fusing the metal, e.g. titanium or a titanium alloy, by an intense heat source, e.g. a plasma torch, to provide a small molten p
4789241 Optical fiber sensing systems having acoustical optical deflection and; modulation devices December 6, 1988
There is provided by this invention an optical sensing system utilizing a Sagnac interferometer having a frequency shifter within the Sagnac counterpropagating loop that is generally comprised of a plurality of acoustic transducers mounted on acousto-optical material to frequency shi
4787741 Fiber optic sensor November 29, 1988
There is provided a fiber optic sensor for sensing environmental effects on counterpropagating light beams in an optical loop by comparing the modulation of the light beams in an optical coil exposed to the environmental effects and comparison with a reference fiber shielded from the
4786060 Sealant spray applicator system and method employing same November 22, 1988
Method and system for applying liquid sealant in holes of a structural member prior to installing fasteners in such holes, which comprises mixing air with a liquid sealant, spraying a controlled amount of the resulting air-sealant mixture into the holes and depositing liquid sealant ther
4785726 Oilseed conditioning system November 22, 1988
A system for treating oilseeds prior to solvent extraction in which the oilseeds are treated in a microwave dryer to raise their temperature to 140.degree. F., passed hot through two-high rolls to crack the hulls and beans, the hulls are removed in an air sorter while at 140.degree. F.,
4774842 Hand-held apparatus to nondestructively test subsurface structure October 4, 1988
A plurality of ultrasonic transducers mounted linearly on a belt that is contained and supported by a housing. The housing has wheels and handles mounted on its sides to allow an operator to grasp the apparatus and roll it across the surface of a test object along a line normal to the be
4774762 Hand-held automatic power crimper October 4, 1988
An automatic pneumatically powered crimping hand tool for making electrical connections is devised by advancing a bandoleer of contact carriers, each contact carrier including a contact, to align one of the contact carriers and contacts in an ejectable position within the tool. Once in t
4773724 Packaging for fiber optic devices September 27, 1988
There is provided by this invention packaging for fiber optic devices that utilizes two concentric cylinders such that one end of the inner cylinder is rigidly fixed to the outer cylinder, while the other end is flexibly attached to the outer cylinder. This attachment isolates the inner
4771627 Stress-coining apparatus and method September 20, 1988
A stress coining tool for fatigue life extension of the wall of an aperture in a metallic structural member, in the form of a rigid elongated member having a plurality of annular olive-like protuberances of a progressively larger diameter from one end of the member, and an additional oli
4765816 Method and apparatus for making optical fiber couplers August 23, 1988
There is provided by this disclosure a method and apparatus for making fiber optic couplers that is comprised generally of the steps of stretching a fused optical fiber pair at a predetermined rate to produce first a tapered section, second a constant diameter cylindrical section, an
4758839 Terrain profile radar system July 19, 1988
Stable measurement of terrain-height variations is provided by this radar system which employs a very low power spread spectrum transmitted signal which, after reception, is processed digitally for extremely stable and predictable performance. The system also includes an automatic power
4756002 Laser diode coupler July 5, 1988
A cylindrical laser rod has a cylindrical sleeve surrounding it, the cylindrical sleeve having a reflective coating applied to its periphery with one or more transparent flats or slits being positioned in an equiangular fashion about the sleeve. At each slit, a focus lens and a retro
4755731 Optical scanning transducer July 5, 1988
There is provided an optical scanning apparatus having an angular positioning means that is generally comprised of a variable capacitor including a rotor disc with a plurality of equally spaced conductors and a stator disc with twice as many equally spaced conductors axially spaced f
4755051 Vibrating optical fiber accelerometer and gyroscope July 5, 1988
There is provided by this invention a fiber optic transducer for accelerometers and gyroscopes that utilize an optical fiber suspended between two points and supported on a vibrating platform such that the optical fiber is deflected to cause light passing through the fiber to be phas
4755037 Fiber optic coupler July 5, 1988
A fiber optic coupler is provided having first and second optical fibers fused together along a predetermined length having fused tapered ends for the input and output of optical energy and a constant diameter section therebetween to facilitate coupling of optical energy between the firs
4751707 Laser diode array exhibiting transverse lasing June 14, 1988
A linear array of multimode laser diodes in a single wafer having a ratio of approximately one emitting stripe width to each non-emitting stripe isolation region width exhibits transverse lasing in a direction perpendicular to the normal laser output at input currents above a pre-det
4749276 Long path absorption cell June 7, 1988
A small volume long path absorption cell of the White-type may be used with condensable samples. The absorption cell is temperature controlled and may be operated over a temperature range of -10 degrees C. to 80 degrees C. To prevent condensation of the sample on the mirror surfaces the
4746968 Combined microwave and thermal drying apparatus May 24, 1988
In a microwave drying cavity, a thermal radiator provides infrared radiation that complements the microwave radiation in effecting a more uniform drying of a product within the cavity. The radiator includes a metal plate having apertures of a trifoliate configuration and electrical r
4746627 Method of making complementary GaAs heterojunction transistors May 24, 1988
A complementary GaAs Transistor pair is formed of a p-type MODFET and an n-type FET having an ion-implanted channel doping with a heterojunction gate. One set of structures is implemented in a planar process utilizing molecular beam epitaxy. The p-MODFET threshold voltage is determined b
4742356 Method and apparatus for determining remote object orientation and position May 3, 1988
A method and apparatus is provided for determining remote object orientation and position with an electromagnetic coupling. A plurality of radiating antennas are provided for radiating electromagnetic energy. Each of the radiating antennas have independent components for defining a s
4741365 Compound pneumatic valve May 3, 1988
A compound pneumatic valve of the bang-bang, spool type; electro-mechanically driven by a pair of face type opposing solenoids which in turn are driven by a pulse width modulator signal. First and second cylinder parts are alternately pressurized and vented through asymmetrical slot
4739115 Poly phosphinoguanidine compounds April 19, 1988
Highly fire resistant composites or laminates particularly applicable as structural components in aircraft, e.g. in the engine nacelle, as part of the acoustic panel-fire wall structure, and capable of withstanding a 2,000.degree. F. flame temperature, comprising incorporating an additiv
4738282 Zero leakage valve April 19, 1988
A valve having dual seats and dual poppets operating in series to function as either a conventional check valve, or may be operated by an independent piston which may be styled to either combine or eliminate the check valve feature. One seat poppet combination employes a metal-to-metal s
4737794 Method and apparatus for determining remote object orientation and position April 12, 1988
A method and apparatus is provided for determining remote object orientation and position with an electromagnetic coupling. A plurality of radiating antennas are provided for radiating electromagnetic energy. Each of the radiating antennas have independent components for defining a s
4733839 Nonorthogonal gimbal March 29, 1988
Gimbal comprised of four concentric cylindrical shells rotatively attached to each other by three pairs of bearings or flexures. The innermost shell is rigidly attached to a suspended instrument. The outermost shell is attached to a vehicle. Each of the three pairs of bearings are coline
4728522 Process for treating hulled oilseeds March 1, 1988
A system for treating oilseeds prior to solvent extraction in which the oilseeds are treated in a microwave dryer to raise their temperature to 140.degree. F., passed hot through two-high rolls to crack the hulls and beans, the hulls are removed in an air sorter while at 140.degree. F.,
4728023 Rosin-free solder composition March 1, 1988
A process for vapor phase soldering of electronic components comprises applying to the surface of a substrate or to the surface of components on such substrate a solder cream comprising 85 to 90% of finely divided solder metal and 10 to 15% of a fluorinated tertiary alkylamine, prefe
4727364 Method and apparatus for intensity shading in a visual display February 23, 1988
An apparatus for generating computed images on an electronically controlled display surface is provided with an improved intensity shading generator. The shading generator operates by assigning each scan line of a raster display a fixed intensity between first and second points. The swee
4717098 Actuator for a g-limiter override January 5, 1988
Spring-loaded linkage contained in a housing attached to the control stick of an aircraft. One member of the linkage is an arm having an end projecting from the housing and forming a hand grip through which the pilot controls the aircraft. The linkage provides a resisting force on the
4716808 Mechanical launch sequencer for a missile January 5, 1988
Apparatus for sequencing the release of a missile from its launch apparatus, the unlocking of the missile's warhead fuze pre-launch safety lock, and the ignition of the missile's rocket motor. A cylindrical block having a radial passageway is situated between the warhead and the rocket
4715707 Laser doppler velocimeter with laser backscatter discriminator December 29, 1987
A laser doppler velocimeter with laser backscatter discrimination for determining the relative velocity between an optical platform and another target where a laser beam is generated and directed toward the target. A detector produces a doppler signal in response to the detection of the
4712306 Fiber optic earth rotation gyro compass December 15, 1987
A fiber-optic rotation sensor particularly adapted to be placed adjacent a drill head to measure the orientation of a drill string with respect to the axis of rotation of the earth during or after drilling for minerals such as oil and gas. The analog sensor is based on a Sagnac interfero
4708008 Volume control superplastic forming November 24, 1987
An apparatus and method for controlling the superplastic forming process by measuring and controlling the volume displaced by the blank being formed so as to measure total strain or surface area increase of the blank.
4699465 Laser diode array with phase correction October 13, 1987
A laser diode array produces one set of beams that are out of phase with those of another set of beams, with the beams of one set alternating with those of the other. The phase plate has first and second sets of regions, with the regions of one set alternating with those of the other. Th
4698541 Broad band acoustic transducer October 6, 1987
There is provided by this invention a broad band acoustic transducer comprising a piezoelectric crystal with a two layer dampening backing having very high attenuation properties. Each layer has an impedance matching the acoustical impedance of the crystal, however, the second layer
4697419 Fast actuator October 6, 1987
A hydraulic power actuator system flow augmentation scheme of the boot-strap type. The scheme consists of a jet pump to augment pump inlet flow with return flow by reducing the pressure in the jet pump below return pressure. A check valve is installed in the augmentation circuit to p
4696711 Method for forming holes in composites September 29, 1987
An inexpensive method of forming close tolerance holes in composites utilizing the B-stage characteristics of those composites. The holes are formed by assembling the composite structure, B-staging the composite material, cutting or drilling undersized holes in the B-staged material,
4693001 Apparatus for air gapping the armature in a compound spool valve September 15, 1987
An apparatus for positioning the spool in the valve body and setting the armature air gap with respect to the core assembly of a compound, spool type valve driven electro-mechanically by a pair of face type opposing solenoids.
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