Patents Represented by Attorney Susan E. Verona
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Patent number: 5335886Abstract: A lift enhancing device for a solid wing is disclosed. A solid wing with a wept leading edge and unswept trailing edge has a rectangular flap attached along the trailing edge. The flap can be a single segment or can be a plurality of segments joined at contiguous edges. The flap oscillates during air movement and enhances the lift produced.Type: GrantFiled: May 26, 1993Date of Patent: August 9, 1994Assignee: The United States of America as represented by the Seceretary of the NavyInventor: Samuel Greenhalgh
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Patent number: 5321004Abstract: A Josephson break junction device suitable for highly sensitive electronic detecting systems. A superconductor film such as YBa.sub.2 Cu.sub.3 O.sub.7 is deposited on a substrate such as a simple-crystal MgO. The film is fractured across a narrow strip by at least one indentation in the substrate juxtaposed from the strip to form a break junction. A transducer is affixed to the substrate for applying a bending movement to the substrate to regulate the distance across the gap formed at the fracture to produce a Josephson turned junction effect. Alternatively, or in addition to the transducer, a bridge of a novel metal is applied across the gap to produce a weak-link junction.Type: GrantFiled: September 17, 1992Date of Patent: June 14, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Ignacio M. Perez, William R. Scott
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Patent number: 5317542Abstract: Ship's attitude parameters, including pitch, roll and heading, provided in he form of synchro signals by redundant sensors, are distributed to various shipboard systems by a synchro selector binary switching tree under the control of a digital processor. The processor also generates dynamic simulations of pitch, roll and heading, which can be distributed to the shipboard systems by the switching tree.Type: GrantFiled: July 21, 1993Date of Patent: May 31, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventor: Peter J. Konopelski
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Patent number: 5310470Abstract: A lightweight corrosivity sensor is provided which is thin enough to be edded between the layers of a composite structure or placed on a surface beneath a coating. It comprises a thin non-conductive base and two electrically isolated conductive elements fixed to the surface thereof. Each conductive element comprises a bus bar and a plurality of strips extending from the bus bar and interdigitated with the strips of the other conductive element. The corrosivity sensor is connectable to a current measuring means for measuring the current across the two conductive elements as an indicator of the presence of a corrosive environment. A masking method of manufacturing such a sensor is also provided.Type: GrantFiled: September 10, 1992Date of Patent: May 10, 1994Assignee: The United States of america as represented by the Secretary of the NavyInventors: Vinod S. Agarwala, Fred Pearlstein
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Patent number: 5308903Abstract: A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising a polyurethane resin binder and a combination of pigments consisting essentially of a molybdate-modified zinc phosphate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating contains up to about 35 parts by weight of a titanium dioxide pigment, up to about 3.0 parts by weight of an oil soluble dispersant agent and up to about 50 parts by weight of at least one organic solvent.Type: GrantFiled: May 14, 1993Date of Patent: May 3, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Charles R. Hegedus, Donald J. Hirst, Anthony T. Eng
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Patent number: 5308270Abstract: A submarine-launched, ice-penetrating sonobuoy is disclosed. The buoy is pedo-shaped with a collapsible obturator tail-fin section removably attached at the tail-end, standard electronics in a mid-section and an explosive nose cone at the front. Immediately after launch, the tail-fin section expands to exert a drag on the buoy to halt any forward motion. The tail-fin section is discarded and the nose cone and mid-section portion rise until the nose impacts the underside of the ice. Upon impact, a pre-selected "shape" charge ruptures the ice and an a spring-antenna, connected to the mid-section, is raised through the hole.Type: GrantFiled: April 15, 1993Date of Patent: May 3, 1994Assignee: The United Stated of America as represented by the Secretary of the NavyInventors: Bruce W. Travor, Ronald D. DiGirolamo
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Patent number: 5304257Abstract: Corrosion resistant coatings are formed on aluminum by immersion in aqueous olutions containing chromic salts, a fluoride ion from compounds such as a fluosilicate with an alkali added near or slightly beyond the precipitation of the insoluble basic compounds. Trivalent chromium films formed on the aluminum surface when tested in 5% NaCl salt spray chamber showed corrosion resistance in excess of 96 hours. After a post-treatment with peroxide or permanganate solutions, the corrosion resistance for the aluminum substrates exceeded 168 hours. Trivalent chromium coated aluminum serves as an effective base for paint primers. Anodized aluminums were also afforded excellent corrosion resistance, after being treated in dilute/basic chromic sulfate solutions and post-treated with peroxide.Type: GrantFiled: September 27, 1993Date of Patent: April 19, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Fred Pearlstein, Vinod S. Agarawala
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Patent number: 5291784Abstract: A linear acceleration sensing device operates through a fluid medium. A fd signal output represents a differential pressure from the elastic deformation of a fluid-filled diaphragm or bellows assembly. A pair of fluid proximity sensors operate differentially in a fluid control network and detect the elastic deformation of the diaphragm assembly caused by increased hydrostatic pressure resulting from a change in acceleration, or "g" force.Type: GrantFiled: May 17, 1993Date of Patent: March 8, 1994Assignee: The United States of America as represented by the Secretary of the ArmyInventor: David R. Keyser
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Patent number: 5290840Abstract: A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising a polyurethane resin binder and a combination of pigments consisting essentially of an alkaline earth metal metaborate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating contains from 5-40 parts by weight of a titanium dioxide pigment, up to about 3.0 parts by weight of an oil soluble dispersant and up to about 50 parts by weight of at least one organic solvent.Type: GrantFiled: September 29, 1992Date of Patent: March 1, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Charles R. Hegedus, Donald J. Hirst, Anthony T. Eng
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Patent number: 5290839Abstract: A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising a polyurethane resin binder and a combination of pigments consisting essentially of a molybdate-modified zinc phosphate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating contains up to about 35 parts by weight of a titanium dioxide pigment, up to about 3.0 parts by weight of an oil soluble dispersant agent and up to about 50 parts by weight of at least one organic solvent.Type: GrantFiled: August 25, 1992Date of Patent: March 1, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Charles R. Hegedus, Donald J. Hirst, Anthony T. Eng
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Patent number: 5290599Abstract: A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising a polyurethane resin binder and a combination of pigments consisting essentially of an alkaline earth metal metaborate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating contains from 5-40 parts by weight of a titanium dioxide pigment, up to about 3.0 parts by weight of an oil soluble dispersant and up to about 50 parts by weight of at least one organic solvent.Type: GrantFiled: April 16, 1993Date of Patent: March 1, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Charles R. Hegedus, Donald J. Hirst, Anthony T. Eng
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Patent number: 5282591Abstract: An on-demand wing vortex control system includes a pair of retractable pas which extend forward through slots in the leading edges of the strake and main wing at their junction. When not in use, the device is retracted in a stowed position, thus having zero impact on the cruise efficiency and observability characteristics designed into the aircraft. The panels extend forward from the strake and wing, providing an added leading edge airfoil surface when in the deployed position. Both panels are slideably and rotatably affixed to the aircraft. A front panel is affixed to and supported within the strake, while a rear panel is affixed and supported within the main wing. The planform of each panel is symmetrically identical, and the movements of the panels are mechanically coordinated so that the exposed planform shape represented by the combined overlapping panels are symmetrical about a line which bisects the strake/wing junction angle.Type: GrantFiled: December 21, 1992Date of Patent: February 1, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Marvin M. Walters, Steven B. Kern
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Patent number: 5279149Abstract: A parallel plate dielectric viscometer is provided for measuring the viscty of a substance having differing substance dielectric properties at differing substance viscosities. Two electrodes are disposed in opposition to each other forming a variable dielectric cell having a dielectric distance between the electrodes. The viscosity of the substance is varied and force is applied to the substance to vary the dielectric distance according to the varying viscosity. The rate of change of the dielectric distance with respect to time is used to determine the viscosity of the substance. The viscosity may be varied by heating the substance and force may be applied to the substance by way of one of the electrodes such that the dielectric distance between the electrodes decreases as the substance becomes more viscous. A fixed cell may also be provided in order to correct for the effects of chemical changes in the substance.Type: GrantFiled: June 22, 1992Date of Patent: January 18, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: John G. Williams, Thomas M. Donnellan, Ronald E. Trabocco
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Patent number: 5275696Abstract: A process for preparing a stainless steel surface for bonding to an adhes is described. First, the surface is wiped with a solvent and then soaked in an alkaline bath at an elevated temperature to remove dirt and grease. The surface is then rinsed with water and immersed in a 135-.degree.F. to 145-.degree.F. solution containing from 25 to 35 volume-percent sulfuric acid in water for a period of time equal to the length of time it takes for a reaction on the surface to commence plus about 4 to 8 minutes. Next, the surface is immersed in a solution at ambient temperature containing from 28 to 35 volume-percent nitric acid and from 2 to 3 volume-percent hydrofluoric acid in water for about 4 to 8 minutes, and then rinsed with water and dried.Type: GrantFiled: May 3, 1993Date of Patent: January 4, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Georgette B. Gaskin, Gabriel J. Pilla, Stanley R. Brown, Robert B. Bonk
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Patent number: 5257243Abstract: An acoustic array having polymer hydrophones is disclosed. The array compes a plastic roll, a plurality of polymer piezoelectric sensors affixed to the roll and electrodes that interconnect the sensors to utilization means such as those found for underwater detection systems or geophysical detection systems such as seismic detectors. The plastic roll has a pliant characteristic so as to readily assume a predetermined shape as well as, preferably, having a strong tendency to unravel and is of a relatively thin material. Similarly, the piezoelectric sensors have a pliant characteristic, are relatively thin, and are affixed to one of the surfaces of the plastic roll. Further, the electrodes have a pliant characteristic, are relatively thin, and are affixed to the same surface of the roll as the sensors.Type: GrantFiled: September 28, 1992Date of Patent: October 26, 1993Assignee: The United States of America as represented by the Secretary of the NavyInventors: Robert A. DeChico, James F. McEachern, Timothy L. Kraynak
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Patent number: 5240643Abstract: This invention comprises the use of diacetylene-containing polymers, e.g., olyamides containing reactive diacetylene groups that change their absorption in the visible spectrum with the application of strain as a strain sensing device in various organic matrix composites such as an epoxy laminated composite. The built in sensors in accordance with this invention will not affect the mechanical performance of the composite and will indicate strain without the need for extensive electronic equipment to measure the light pulse amplitude or phase before and after strain.Type: GrantFiled: March 11, 1992Date of Patent: August 31, 1993Assignee: The United States of America as represented by the Secretary of the NavyInventors: Leonard J. Buckley, Gary C. Neumeister
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Patent number: 5241282Abstract: A low power, wide-dynamic-range, signal compressor is suitable for operat from batteries. The compressor input is compatable with most sensors, resistive, capacitive or inductive and it is capable of compressing 150 db of input dynamic range into a 6 bit digital or 40 db analog signal. The output from the compressor is single valued and satisfactory for driving standard telemetry equipment.Type: GrantFiled: June 4, 1974Date of Patent: August 31, 1993Assignee: The United States of America as represented by the Secretary of the NavyInventor: Lynn A. Poole
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Patent number: 5236646Abstract: This invention relates to a process for preparing thermoplastic composites .e. laminates from a plurality of individual plies of thermoplastic resin prepregs. The prepregs are formed into composites under two substantially concentric vacuum chambers. High temperatures and low consolidating pressures are applied against the prepregs in an inner vacuum chamber while a lower vacuum is drawn from the rigid outer chamber to remove the volatiles and consolidate the prepregs.Type: GrantFiled: March 2, 1992Date of Patent: August 17, 1993Assignee: The United States of America as represented by the Secretary of the NavyInventors: Roland C. Cochran, Edwin L. Rosenzweig
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Patent number: 5236983Abstract: A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising a polyurethane binder and a combination of pigments consisting essentially of an alkaline earth metal phosphosilicate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating contains up to about 35 parts by weight of a titanium dioxide pigment and up to about 3.0 parts by weight of an oil soluble surface active agent and up to about 50 parts by weight of at least one organic solvent.Type: GrantFiled: December 20, 1991Date of Patent: August 17, 1993Assignee: The United States of America as represented by the Secretary of the NavyInventors: Charles R. Hegedus, Donald J. Hirst, Anthony T. Eng
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Patent number: H1219Abstract: A supersonic aircraft or missile broad bandwidth antenna is provided. This antenna is constructed into a cavity created in the fuselage or wing of the aircraft and covered with a radome for flush mounting. The cavity comprises side walls and a bottom constructed of electrically conductive materials which are caused to be electrically excited by an antenna element located within the cavity. This antenna element, which is capable of broad bandwidth operation, is either passively or actively tuned. Active tuning is carried out by a logic converter circuit connected to the antenna from a communications transceiver.Type: GrantFiled: April 19, 1991Date of Patent: August 3, 1993Assignee: The United States of America as represented by the Secretary of the NavyInventor: Joseph F. Miller