Abstract: Oil spill polluted water is conducted under pressure in sequence through arator devices to collect and burn a polluted water mixture having its oil concentration increased by extraction of water therefrom during axial flow through the separator devices. Such water extraction is effected by sequential radial outflow through oil flow blocking filter walls of the separator devices in response to rotation thereof.
Type:
Grant
Filed:
September 26, 1996
Date of Patent:
August 11, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
John Wehrle, Eugene C. Fischer, William P. Kenney, Joseph F. Korczynski, Thomas D. Gracik, Barbara F. Howell, William Klemens
Abstract: Different sequences of pulses applied to three terminals of a sense amplir section in timed relation to address pulses applied to a word line of a ferroelectric memory cell, controls detection and transfer of data with respect to a selected bit line to which the sense amplifier section is connected for rapid reset following data transfer without any precharge.
Type:
Grant
Filed:
October 18, 1996
Date of Patent:
August 11, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Nonlinear current modulation of a relativistic electron beam is achieved by ts propagation without interruption through a resistive wall type of drift tube assembly within a klystron amplifier. Maximized beam current modulation is thereby attained for a beam propagation distance within a shortened drift tube.
Type:
Grant
Filed:
April 3, 1996
Date of Patent:
June 30, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: A vehicular lift wing having a Coanda edge perimeter, is provided with a zle slot formation from which fluid ejection is directed tangentially from the full Coanda edge perimeter during translation through an ambient fluid medium. Omnidirectional control means supplies pressurized fluid to the nozzle slot formation at different azimuthal locations along the Coanda edge perimeter for selectively controlled generation of dynamic forces exerted on the wing.
Type:
Grant
Filed:
October 22, 1996
Date of Patent:
June 16, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Biological tissue is imaged by non-damaging illumination from a coherent ht source and retroreflective radiation from a phase conjugate mirror without correction for absorption induced distortion. Optics is provided to regulate the illumination and to direct the retroreflective imaging radiation from the targeted biological tissue. Such imaging radiation is maintained substantially at unity reflectivity.
Type:
Grant
Filed:
May 24, 1995
Date of Patent:
June 2, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Propellant pressure forces generated within the bore of a gun barrel are lied to a projectile through a self-adjusting obturator to prevent projectile blow by of propellant explosion products. The propellant forces are transmitted through a body of shock-absorbing fluid in the obturator protectively isolated from surfaces of the barrel and projectile by a non-porous, flexible enclosure wall deformed into sliding contact with the barrel bore during projectile launch for preventing propellant pressure loss.
Type:
Grant
Filed:
February 16, 1993
Date of Patent:
May 12, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: The invention is directed to a method, utilizing a neural network, for estimating helicopter airspeed in the low airspeed flight range of below about 50 knots using only fixed system parameters as inputs to the neural network.
Type:
Grant
Filed:
October 24, 1996
Date of Patent:
May 12, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
Carl G. Schaefer, Jr., Kelly M. McCool, David J. Haas
Abstract: The organic coating deposited on a metallic substrate is quantitatively euated by measurement of electrical signals through an electrochemical cell having an electrode separated from the deposited coating by a porous pad within which a liquid medium is absorbed. Quality determining parameters of the coating are rapidly calculated through a data processor to which electrical current and phase shift measurements are fed together with data from the electrochemical cell. The method may be used to evaluate the quality of the coating on the steel hull of a marine vessel exposed to seawater.
Type:
Grant
Filed:
February 14, 1996
Date of Patent:
May 5, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: A duct fixed to a vehicle propelled through an ambient fluid medium is innally provided with spaced channel passages from which the fluid medium is ejected under pressure tangentially of local duct surfaces through Coanda affected slots at the trailing edge of the duct from which only the ejection of the fluid medium occurs. The supply of the pressurized fluid medium under selective control is limited to different angular segments of the channel passages in order to modify the flow stream through the duct so as to perform certain functions such as thrust control and steerage control effects enhancing vehicle maneuverability.
Type:
Grant
Filed:
February 19, 1997
Date of Patent:
March 17, 1998
Assignee:
The United States of America as represented by Secretary of the Navy
Abstract: The forks of a conveyor tray are hingedly mounted between two end forks rdly interconnected by a cross-bar and through which electrically powered drive chains impart movement to the tray along a vertical conveyor path. The hingedly mounted tray forks are releasably held in normal load-supporting positions on the cross-bar in alignment with the two end forks, so that they may be pivotally displaced upwardly from such positions by travel resistance forces in excess of a safety level.
Type:
Grant
Filed:
March 21, 1996
Date of Patent:
February 17, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Electrical energy from a DC voltage source is supplied through a power swhing converter under operational control, to an electrical load in accordance with a soft-switching mode implemented by an auxiliary resonant commutated pole inverter. A mode control section having snubber switches connected to the switching converter selectively changes switching operation to a hard-switching mode so as to accommodate supply of load current at higher levels to the electrical load.
Type:
Grant
Filed:
February 22, 1996
Date of Patent:
February 10, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: A linear actuator having a magnetostrictive rod is magnetically energized der analog logic control in operative relation to a pair of electrically disengaged one-way locking devices, one of which is interconnected with the actuator through a stroke multiplier for high force, high speed motor drive. Two stage operation of the stroke multiplier is effected through levers angularly displaced by angular deformation of the magnetostrictive rod about a pivotal axis offset from the rod axis by means of a flexible support for such levers to avoid wear and backlash.
Type:
Grant
Filed:
May 2, 1995
Date of Patent:
January 6, 1998
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: The invention is directed to an improved acoustic sensor system for detering the direction of underwater sound signals relative to a user is disclosed. The sensor system includes first and second sensing means for sensing incoming acoustic energy and for providing first and second acoustic energy signals in response thereto; separation means for separating the first and second sensing means a distance S=E(C.sub.W /C.sub.A) where E is substantially equal to the separation distance between the users ears, C.sub.W is the speed of sound in water, and C.sub.A is the speed of sound in air; detector means, operatively connected with the first and second sensing means, for providing first and second output signals in response to the first and second acoustic energy signals; and audio means, operatively connected with the detector means, for providing an audio output to the user in response to the first and second output signals.
Type:
Grant
Filed:
November 27, 1996
Date of Patent:
December 9, 1997
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Polycrystalline or single crystal magnetostrictive alloys of the formula Tb.sub.1-x Dy.sub.x Zn.sub.w (0<x.ltoreq.0.7; 0.90.ltoreq.w.ltoreq.1.10) and Tb.sub.1-y Gd.sub.y Zn.sub.w (0<y.ltoreq.0.4; 0.90.ltoreq.w.ltoreq.1.10) and magnetostrictive transducer elements made of these alloys.
Type:
Grant
Filed:
April 3, 1996
Date of Patent:
December 2, 1997
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
Arthur E. Clark, James B. Restorff, Marilyn Wun-Fogle
Abstract: A coil spring made of a shape memory alloy is seated within the container a portable dispenser in a contracted condition under compressive stress maintained by the physical constraint of a pressure plate engaging a collapsible enclosure internally lining the dispenser container to isolate therein material to be dispensed. The pseudoelastic properties of the shape memory alloy are selected to exclusively regulate the storage and delivery pressures in order to accommodate different materials to be dispensed and control discharge thereof by the dispenser.
Type:
Grant
Filed:
May 24, 1995
Date of Patent:
November 11, 1997
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Engine driven turbines respectively drive separate propulsion and service ternators to supply power to propulsion motors and service equipment on naval combat ships through propulsion and service controls. Rechargeable batteries are connected through the service controls to the service alternators and to service loads through dc bus lines. The propulsion controls interconnect the propulsion motors with the propulsion alternators to which the electrically operated weapons are also connected through rectifiers and a pulse forming network.
Type:
Grant
Filed:
August 16, 1996
Date of Patent:
November 4, 1997
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: A compact bicoupled contrarotating epicyclic gear is provided. The gear iudes a rotatable input shaft for providing an input-torque, a first-stage epicyclic gear, a second-stage epicyclic gear mutually drivably coupled to and in axial alignment with the first epicyclic gear, an outer-output shaft for conveying an outer-output-torque in response to the input-torque, and an inner-output shaft coaxial with the outer-output shaft for conveying an inner-output-torque in response to the input-torque. The bicoupled contrarotating epicyclic gear further includes at least one interstage torque carrier rotatably connecting the first and second epicyclic gears in series such that the first and second sun gears, the first and second planet carriers, and the first and second ring gears rotate and convey useful torque in response to the input-torque.
Type:
Grant
Filed:
September 14, 1995
Date of Patent:
October 21, 1997
Assignee:
The United States of America as represented by the Secretary of the Navy
Abstract: Vibration-damping layers are stored as a continuous elongated strap in cod condition for supply to subsequently fabricated structural products. Such strap is formed from high modulus layer constrainment segments encapsulated within a viscoelastic material contributing to establishment of the vibration-damping property and flexure of the strap between the segments thereof to accommodate coiling during storage. The strap is uncoiled from its storage condition during a supply phase to a preselected surface of the fabricated structural product.
Type:
Grant
Filed:
September 19, 1995
Date of Patent:
September 30, 1997
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
Aleksander B. Macander, Thomas N. Tinley, Steven S. Chiu
Abstract: Precise quantities of lubricant from separate reservoirs under automatic trol are injected into chambers of housings of shielded rolling element bearings. Separate feed line conduits directly deliver the lubricant to the shielded critical surfaces of such bearings and insure maintenance-free operation of machinery with which the bearings are associated.
Type:
Grant
Filed:
November 19, 1996
Date of Patent:
September 30, 1997
Assignee:
The United States of America as represented by the Secretary of the Navy
Inventors:
Jeffrey A. Wong, Thomas L. Daugherty, Gordon D. Huntzberry
Abstract: An axially elongated tube is slideably and pivotally supported within a tlar housing from which the tube extends rearwardly for connection to a source of vacuum. The vacuum is selectively applied through the tube from a flattened forward end thereof to a workpiece after the tube is slideably displaced rearwardly from a retracted to an extended position within the housing. A hand grip on the housing enables it to be manually held in operative relation to the workpiece. A support assembly pivotally mounted on the housing adjustably positions a heating jaw electrically connected by a switch on the housing to a power supply for performance of heat sealing operations on the workpiece.
Type:
Grant
Filed:
August 15, 1995
Date of Patent:
September 16, 1997
Assignee:
The United States of America as represented by the Secretary of the Navy