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| Number | Title | Issue Date |
| 4241431 | Sonar ranging system A passive ranging system is disclosed wherein the transducer array has its eam pattern modulated so as to match the arrival angles of the different wave fronts arriving at the array from various target distances. The beams are formed by orientating a multi... | 12/23/1980 |
| 4227856 | Reverse velocity rotor system for rotorcraft A blade control method and means for helicopter rotors which increases heopter speed by mixing two/rev. control motion with one/rev. cyclic and collective motion through mechanical summation is provided. Both rotary and vertical motions are imparted to a... | 10/14/1980 |
| 4227111 | Flexible piezoelectric composite transducers A flexible, low-density piezoelectric transducer utilizing a PZT-polymer posite that is formed with the two phases three-dimensionally interpenetrant. The ceramic PZT microstructure, which is produced by a replication process that in one embodiment repro... | 10/07/1980 |
| 4227153 | Pulse generator utilizing superconducting apparatus High power, phase coherent pulses are generated by superconducting appara which includes a superconducting cavity resonator that is pumped by a low power microwave source while being isolated from a load. Switching of the cavity to an emitting mode is ac... | 10/07/1980 |
| 4224546 | Purification of liquid metal current collectors A method and means for continuously returning degassed and de-emulsified uid metal to the collector sites of high speed acyclic generators is provided. Hydrodynamic pressures developed by the high speed rotating discs are employed to pump liquid current-... | 09/23/1980 |
| 4210847 | Electric wind generator A device for generating an air jet without the use of moving parts is proed. High voltage is used to create a corona discharge electric wind in a ducted, compact, portable generator that can be used for augmentation cooling applications where high voltag... | 07/01/1980 |
| 4204655 | Broadband interferometer and direction finding missile guidance system A wide bandwidth interferometer which may be employed in a guidance system or a rolling missile delays the radar signals detected by one of the antennas by a fixed amount and the signals detected by the other antenna by a variable amount prior to their mul... | 05/27/1980 |
| 4202517 | Fluidic interface means A means for interfacing between low pressure, low flow fluidic circuits and he high pressure, high flow input requirements of fluidic digital thrusters to control the roll, pitch or yaw rate of missiles is provided. Input pressures from the fluidic circuit... | 05/13/1980 |
| 4197270 | Process for bonding with polyethylene encapsulant A process for producing a bond at the interface between an encapsulant and he object to be encapsulated is provided. A selected resin with curing agent is coated and oven cured on the object to be encapsulated and thereafter a copolymer coating is applied ... | 04/08/1980 |
| 4191028 | Dry ice, liquid pulse pump cooling system A CO2 -powered system for cooling garments by conduction cooling when he wearer is subjected to heat stress is provided. A dry ice refrigerant source provides the cooling and the CO2 gas given off during sublimation of the dry ice pro... | 03/04/1980 |
| 4188172 | Method and means for injecting hot liquid when pumping cold liquid A method of and means for introducing a heated liquid into a cold liquid the purpose of improving the pumping rate of the cold viscous liquid is provided. The heated liquid is directed upward into the suction inlet of the cold liquid pump through an ori... | 02/12/1980 |
| 4185888 | Cryptographic system employing optical scrambling arrays 1. A system for coding optical images comprising, in combination, first and second geometric arrays of light-conducting elements, similar elements of each array being scrambled in a random fashion such that the respective ends of these conductors occupy d... | 01/29/1980 |
| 4171159 | Optical homodyne microscope An optical homodyne microscope is disclosed which detects phase modulation of the optical radiation that is reflected from an object under study which is in a state of periodic motion. The dimensions of the object may be smaller than the optical wavelengt... | 10/16/1979 |
| 4168441 | Picosecond pulse generator utilizing a Josephson junction A picosecond pulse generator for producing pulses having widths in the or of 10-12 seconds utilizes a Josephson junction that has an external load resistor connected in shunt therewith by a balanced transmission line. The Josephson junction is... | 09/18/1979 |
| 4168445 | Offset liquid metal storage method and means An offset or asymmetrical self-contained liquid metal current collector for cyclic or homopolar electrical generators or motors is provided which includes a narrow annular volume on one side and a wide annular volume on the other side of the collector disc... | 09/18/1979 |
| 4148032 | Method and means for defocusing engine cavity reflected energy Radar wave energy entering aircraft engine cavities is substantially disped by providing within such cavities surfaces having perturbations or dipoles which interact with the electromagnetic energy within the cavity interior, causing the reflected energy... | 04/03/1979 |
| 4143549 | Temperature measuring system An arrangement for determining the temperature gradient within a fluid mem, which is used to ascertain the magnitude of vertical water movement, utilizes a pair of thermistors connected in a differential Wheatstone bridge that senses the temperature at t... | 03/13/1979 |
| 4143520 | Cryogenic refrigeration system A simply constructed low input power cyclic cryogenic refrigerator suitable or cooling superconducting quantum interfering devices (SQUID) and similar instruments is provided. A Stirling machine having a multistage displacer and a piston as its only essent... | 03/13/1979 |
| 4111596 | Turbine blade cooling system The disclosure concerns a means for cooling the leading edges and trailing dges of turbine blades by cross-stream injection. Cooling is achieved by ejecting coolant from holes opposite either the leading or trailing edges of the blades, or both, with coola... | 09/05/1978 |
| 4112430 | Beamformer for wideband signals A beamformer for wideband signals wherein the elemental signals available the sensors of a receiving array are subjected to Fast Fourier Transformations which decompose them into a plurality of narrowband signals. The narrowband signals, which consist of... | 09/05/1978 |
| 4112455 | Field-effect transistor with extended linear logarithmic transconductance The linearity of a field-effect transistor's logarithmic transconductance extended over an increased range by having its channel non-uniformly doped in a direction along the width of the gate electrode and perpendicular to that of current flow.... | 09/05/1978 |
| 4109867 | Two-position nozzle A dual-position nozzle having a stationary outer support structure or thr holder and an inner sustain throat assembly which translates during boost-sustain transition is provided. The throat holder includes inner and outer metal support rings joined by t... | 08/29/1978 |
| 4109359 | Method of making ferroelectric crystals having tailored domain patterns Ferroelectric crystals and ceramics prepared with tailored domain patterns hich are selected to enhance or suppress certain modes of vibration which may include those normally unattainable such as, for example, second harmonics.... | 08/29/1978 |
| 4107946 | Low heat loss liquid helium disconnect attachment and system An easily maintainable interface for magnet dewars which includes a low h leakage disconnect fitting that retains the vacuum integrity of both the dewar and the transfer line is provided. The fitting includes a bayonet-type insert having separate coils d... | 08/22/1978 |
| 4105280 | High current density electrical contact The disclosure concerns an electrical contact for conducting high current densities in a minimum of space and with improved connection between the contact and the socket. The contact includes a split, internally tapered circular sleeve which is mounted in... | 08/08/1978 |
| 4099375 | Exhaust plume reduction and cooling system A radiation suppressor for exhaust turbine or other engines which signifitly reduces the lock-on range of infrared seeking missiles is provided. Engine exhaust gases are the sole power source for driving an exhaust turbine which includes a self-contained... | 07/11/1978 |
| 4099249 | Doppler processing method and apparatus A method and apparatus for determining the value of a Doppler frequency shift component Ɗf present in a signal f &#b1; Ɗf employing a correlation process which utilizes the Mellin transform and is scale invariant. The location of the correlation peak in... | 07/04/1978 |
| 4096818 | Drogue type deceleration device A device for rapidly decelerating a high velocity projectile in a liquid ium, e.g. water, while preventing both excessive high inertial loading of sensitive projectile components and high impact loading of the device itself is provided. A plurality of de... | 06/27/1978 |
| 4077518 | Sensor transport system A transport system for fragile instruments such as the motion sensors used n aircraft flight controls which are very susceptible to damage during handling, shipment and installation is provided. Individual sensors are mounted on a plate that is suspended i... | 03/07/1978 |
| 4073010 | Correlation methods and apparatus utilizing mellin transforms Correlation methods and apparatus are disclosed which make use of Mellin transforms that are scale and shift invariant. There is no loss in the signal-to-noise ratio of the correlation, and data is available for determining any scale difference between th... | 02/07/1978 |
| 4071194 | Means for cooling exhaust nozzle sidewalls A cooling arrangement for a gas turbine exhaust nozzle is provided which ludes a plurality of heat shield panels slidably positioned on tracks mounted on the nozzle casing. The panels are spaced apart to permit thermal expansion and include impingement b... | 01/31/1978 |
| 4071907 | Radar signal processor utilizing a multi-channel optical correlator A real-time radar processor utilizing a coherent optical system for provig target fine range and Doppler/azimuth angle data with increased signal-to-noise and signal-to-clutter ratios. Radar signals detected by a linear phased array or successive echo si... | 01/31/1978 |
| 4062057 | Regulated power supply having a series arrangement of inverters A regulated power supply which may be of the A.C.-to-D.C. type utilizes a ries arrangement of inverters because of a voltage rating of these inverters with respect to the magnitude of the D.C. driving voltage available either as a consequence of rectifyin... | 12/06/1977 |
| 4050775 | Catoptric lens arrangement A family of catoptric lens arrangements is provided for focusing a maximum mount of light from an omnidirectional source into a parallel or conical beam. A rear spherical-curvature reflector is inserted into a conventional forward spherical plus rear parab... | 09/27/1977 |
| 4050675 | Battery wedge for submarines or other installations A wedge assembly for spacing apart batteries which permits a complete range f operation with all components remaining intact in their assembled form is provided. A central or inner wedge having a plurality of identical wedge sections is movable between a p... | 09/27/1977 |
| 4050265 | Force-displacement controller knob A force-displacement controller knob for use in isometric control devices provided. A controller knob component is mounted on existing control shafts and the knob itself contains a pair of compressible, resilient washers separated by and contacting a rig... | 09/27/1977 |
| 4037916 | High current density electrical contact The disclosure concerns an electrical contact for conducting high current densities in a minimum space at acceptable operating temperatures and lower contact resistance than conventional slotted contacts of equivalent size. The contact pin is formed in a ... | 07/26/1977 |
| 4027549 | Plug-type counterweight and lock A method of and apparatus for balancing rotating machinery components which ncorporate butted flanges or faces is provided. A circumferential slot is formed on the interior face of one of the flanges and a hole is bored in either flange communicating with ... | 06/07/1977 |
| 4027946 | Acousto-optic guided-light beam device An acousto-optic guided-light beam deflector of improved bandwidth utilizes at least two tilted surface acoustic waves of different frequency which are launched and phased such that the Bragg diffracted light from each surface wave interferes constructive... | 06/07/1977 |
| 4018911 | Method for large volume freezing and thawing of packed erythrocytes A rigid metal holder having perforated side plates for containing plastic gs of human red blood cells for both freezing and thawing such cells is provided. Hydroxyethylstarch, HES, is used as the cryoprotective agent and, together with the perforated meta... | 04/19/1977 |
