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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7363960 | Heat transfer of a remote heat source using a loop heat pipe Heat transfer systems and methods 30 for use on a spacecraft that use a loop heat pipe to transfer heat from a remotely located heat source to a thermal radiator or other heat dissipating apparatus. The loop heat pipe is a two phase heat transfer device that has an ... | 04/29/2008 |
| 7219132 | Dynamic resource allocation architecture for differentiated services over broadband communication networks Dynamic resource allocation that provides differentiated services over a broadband communication network. The system comprises a gateway that interfaces to an Internet service provider or corporate network, a local area network edge device, a satellite that provides... | 05/15/2007 |
| 7028953 | Two-sided deployable thermal radiator system and method A spacecraft heat dissipation method, and a spacecraft having an improved thermal radiator system that uses two-sided deployable thermal radiators that dissipates heat from both front and back surfaces thereof. The use of the two-sided deployable thermal radiators e... | 04/18/2006 |
| 6414646 | Variable beamwidth and zoom contour beam antenna systems Variable beamwidth antenna systems for use on spacecraft that is capable of changing their beamwidths while the spacecraft in on orbit. The variable beamwidth antenna systems include a main reflector, a subreflector, a feed horn, a main reflector displace... | 07/02/2002 |
| 6311929 | Spacecraft and appendage stepping methods that improve spacecraft attitude pointing and cancel solar array slew disturbances A spacecraft having a body, one or more appendages coupled thereto, and a controller that implements methods that rotate the one or more flexible appendages to point it (them) towards the Sun to reduce spacecraft attitude pointing disturbances and improve... | 11/06/2001 |
| 5689210 | Active distributed signal sampler A circuit that samples a through signal, while minimizing attenuation, distortion, or other perturbation to the through signal and sampled signal. The present invention provides for an active distributed signal sampler that includes two transmission lines... | 11/18/1997 |
| 5657261 | Interpolation of digital signals using signal sample replication A filtering technique that results in improved performance of interpolating filters. The improved filter and technique replicates samples of the digital input signal instead of inserting zeroes before smoothing to eliminate undesired images of the sampled... | 08/12/1997 |
| 5654670 | Active distributed signal injector A circuit that injects an auxiliary signal into an existing signal path, thereby adding it to an existing main signal, while minimizing attenuation, distortion, or other perturbation to the main signal. The present invention provides for a active distribu... | 08/05/1997 |
| 5619627 | Multiple-level occulting using a mask buffer Occulting apparatus for use with an image generator that provides for multiple-level occulting of image data. The occulting apparatus comprises a mask buffer and control logic for processing image data to construct and store an obscurance mask in the mask... | 04/08/1997 |
| 5534293 | Method for producing hafnium carbide surfaces on carbon based materials A method for treating surfaces of carbon based materials produces a layer of hafnium carbide with no significant change of the location of the surface or the dimension of the part being treated. A slurry containing elemental hafnium is applied to this sur... | 07/09/1996 |
| 5218361 | Interferometer ambiguity resolution using missile roll Apparatus and methods of achieving accurate, unambiguous angle information with a minimum number of antenna elements. The present invention resolves the ambiguities inherent in a long baseline phase interferometer by employing a minimum number of antennas... | 06/08/1993 |
| 4858819 | Orthogonal bonding method and equipment Wire bonds are closely spaced about the edge of a semiconductor chip device (150) in an orthogonal array. Even though the wires may have a fan out pattern to their second bond locations, close spacing of the first bond pads is achieved by use of rectangul... | 08/22/1989 |
| 4849763 | Low sidelobe phased array antenna using identical solid state modules An electrically scanned phased array with low sidelobes and tapered aperture illumination is disclosed. The array is fed by a uniform corporate feed network (55) and includes a main array aperture formed by main radiating elements (72-75) and first and se... | 07/18/1989 |
| 4845311 | Flexible coaxial cable apparatus and method A flexible coaxial cable capable of high frequency signal propagation formed from a multilayer configuration having a plurality of adjacent signal traces etched in dielectric material and surrounded by a protective ground layer. Selected ones of the signa... | 07/04/1989 |
| 4841572 | Stereo synthesizer A stereo image enhancement system, in which difference signal components in relatively quieter difference signal frequency bands are boosted to provide an improved stereo image, is provided with a stereo input that is synthetically derived from monaural s... | 06/20/1989 |
| 4839707 | LCMOS displays fabricated with implant treated silicon wafers An improved LCMOS display device employing a silicon-on-insulator (SOI) substrate having an epitaxial silicon layer lying over an implant-generated dielectric layer. MOS device and capacitor elements used to activate the display are formed and interconnec... | 06/13/1989 |
| 4836329 | Loudspeaker system with wide dispersion baffle A wide dispersion baffle for a vertically oriented loudspeaker includes a first semi-conical reflective section that is concave toward the speaker and has a semicircular rim positioned at the periphery of the speaker. It extends at an angle of about 45° ... | 06/06/1989 |
| 4835493 | Very wide bandwidth linear amplitude modulation of RF signal by vector summation A radio frequency (RF) carrier wave is successively divided and the divided parts are non-linearly, phase modulated in response to a modulating signal. The modulating signal is linearized so that the output of the circuit is linear with the modulating sig... | 05/30/1989 |
| 4828162 | Moving jaw reflow soldering head Apparatus for gripping and removing integrated circuits, including four heatable jaws movable into gripping relation with soldered integrated circuit leads. The heatable jaws are mounted to respective leveler plates, each of which is suspended from a base... | 05/09/1989 |
| 4825175 | Broadband, high isolation radial line power divider/combiner Disclosed is a power divider/combiner using two parallel plate radial transmission lines having parallel plate spacing of less than λ/2 and which operates in a higher order mode, preferably the first higher order circumferential mode TE11. Hig... | 04/25/1989 |
| 4824240 | Internal laser interferometer An instrument of measuring motion of a vibratory system, such as an ultrasonic bonder, employs a laser (10) that receives within its lasing cavity light transmitted (24) to the object (26) to be monitored and retroreflected (24), so that oscillations with... | 04/25/1989 |
| 4822130 | Fiber optic hermetic feedthrough A fiber optic feedthrough connector 10, typically mounted in a panel 13 through which contact is to be made, carries a double-ended terminus 47 hermetically sealed, anchored in, and extending through a wall portion 17 of the connector 10. An optic fiber 2... | 04/18/1989 |
| 4820185 | Anti-backlash automatic locking connector coupling mechanism A coupling mechanism (11) comprising a receptacle (13) having an open cavity (31) therein, a plug (15) receivable in the cavity (31), and a rotatable coupling member (17) drivingly coupled to the plug (15) and coupling the plug (15) to the receptacle (13)... | 04/11/1989 |
| 4819269 | Extended imaging split mode loudspeaker system Direct field sound, represented by the sum of left and right stereo input signals, is projected in a narrow dispersion pattern from a front radiating speaker 28,32 and reverberant field sounds, represented by difference between left and right stereo input... | 04/04/1989 |
| 4817848 | Compliant motion servo An automatic ultrasonic wire bonder employs a compliant motion servo (17, 119, 239, 200) on its Z axis drive to maintain a known, constant and steady force applied by the bonding tool (13) to the wire. The tool is resiliently mounted to a carriage (15) th... | 04/04/1989 |
| 4813127 | Method of making a laser electrode structure An RF laser structure (10) is disclosed which includes an elongated laser excitation cavity (27) and an electrode structure (20) for suppressing extraneous RF discharges outside of the laser cavity. The electrode structure includes an electrode (41) adjac... | 03/21/1989 |
| 4812782 | Non-reactive radial line power divider/combiner with integral mode filters Disclosed is a parallel plate radial transmission line having parallel plate spacing of less than λ/2 and which utilizes a specific higher order mode, preferably the first higher order circumferential mode. Undesired modes are suppressed by mode supressi... | 03/14/1989 |
| 4812789 | Ridged waveguide wide band diplexer with extremely sharp cut-off properties A wideband balanced diplexer splits an incoming wideband microwave frequency signal into separate upper and lower frequency outputs and possesses a sharp band cut-off to increase effective bandwidth. The diplexer includes a pair of waveguide assemblies fo... | 03/14/1989 |
| 4810904 | Sample-and-hold phase detector circuit A sample-and-hold phase detector (30, 80, 90, 100, 110) which includes sample-and-hold circuitry (FIG. 6) having variable efficiency. Specifically, the sample-and-hold circuitry provides a sampling pulse of variable width which is controlled to be wider d... | 03/07/1989 |
| 4799773 | Liquid crystal light valve and associated bonding structure A LCLV device exhibiting improved performance capabilities fabricated using an amorphous silicon photoconductor layer, a cadmium telluride blocking layer, a titanium dioxide mirror and a sepcial bonding layer which enables attachment of the cadmium tellur... | 01/24/1989 |
| 4787699 | Fiber optic terminus A fiber optic terminus (11) comprising a body (13) having a passage (15) therein which opens at an outer surface. The passage (15) can receive an optical fiber (19), and the fiber is guided into position by a fiber guide (17). A temperature-activated adhe... | 11/29/1988 |
| 4786860 | Missing wire detector The absence of a wire (40) in proper position under the bonding tool (32) of an ultrasonic wire bonder is detected by energizing the bonder transducer (14) while the wire is pulled to break it after the second bond (B) has been made. The pulling of the wi... | 11/22/1988 |
| 4781437 | Display line driver with automatic uniformity compensation An on-substrate driver circuit for a display line of a liquid crystal display having an amplifier connected in conjunction with an amplifier input capacitor, a sample/hold capacitor and three switches. The circuit operates in a first compensation mode whe... | 11/01/1988 |
| 4779285 | Clustered waveguide laser A multiple cavity waveguide laser is formed of a pair of face to face contiguous dielectric blocks 70, 72, in the facing surfaces of which are formed pairs of mating waveguide grooves 78, 80, 82, 84, having an electrode partition 92 sealed to and between ... | 10/18/1988 |
| 4771248 | Fast phase-lock frequency synthesizer A phase-locked frequency synthesizer (10) having a voltage controlled oscillator (40), a divider circuit (60), and a sample-and-hold phase detector (30, 80, 90, 100, 110) which utilizes gain compensation (90,110) for optimizing phase-locking speed. The sa... | 09/13/1988 |
| 4771472 | Method and apparatus for improving voice intelligibility in high noise environments The output of a noise canceling first or second order electret gradient microphone in a very high noise environment has background noise attenuated and certain phonemes shaped to improve intelligibility by means of a slow action automatic gain control cir... | 09/13/1988 |
| 4770485 | Apparatus to launch separated mode groups into optical fibers An apparatus for launching separate mode groups comprising an LED (13) and a collimator (C1) for providing a first beam (19) of collimated light and an LED (15) and a collimator (C2) for providing a second beam (23) of collimated lig... | 09/13/1988 |
| 4767003 | Transparent, electrostatic protective container with readily accessible identification means A protective container is disclosed which includes an integral pocket for holding identification material relating to the contents of the container. The pocket and an associated tab over the pocket opening position the identification material such that ba... | 08/30/1988 |
| 4766438 | Three dimensional feed through lens with hemispherical coverage A lens antenna having four phased array apertures positioned for hemispherical coverage is disclosed. An array of phase shifters is disclosed, each of which is interconnected with four radiating elements, one on each of the four apertures. A feed horn is ... | 08/23/1988 |
| 4751715 | Clustered waveguide laser A multiple cavity waveguide laser is formed of a pair of face to face contiguous dielectric blocks 70, 72in the facing surfaces of which are formed pairs of mating waveguide grooves 78, 80, 82, 84having an electrode partition 92 sealed to and between the ... | 06/14/1988 |
