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Avco Corporation Patents
Assignee:
Avco Corporation
Address:
Providence, RI
No. of patents:
308
Patents:


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Patent Number Title Of Patent Date Issued
RE33777 Laser removal of poor thermally-conductive materials December 24, 1991
A method of removing material of poor thermal conductivity such as paint, grease, ceramics, and the like from a substrate by ablation without damage to the substrate by delivering to the material to be removed pulses or their equivalent of a laser beam having a wavelength at which the ma
RE32094 Overflying munitions device and system March 25, 1986
In a munitions system, a cylindrical canister is fired over a target. The canister carries a target sensing infrared device and, when a target is detected, a projectile is fired downward from the bottom of the overflying missile. A spinning motion is imparted to the missile to stabilize
RE29103 Nitrogen laser action with supersonic flow January 4, 1977
Lasing action is electrically induced in a supersonic flow of nitrogen gas, resulting in an increase in pulse repetition rate to a new order.
5580648 Reinforcement system for mastic intumescent fire protection coatings December 3, 1996
A reinforcement system for mastic intumescent fire protection coatings. Free floating carbon mesh embedded in the coating is used to reinforce the coating. Optionally, the carbon mesh may be used in conjunction with mechanically attached reinforcements.
5547717 Method for densifying and refurbishing brakes August 20, 1996
Aircraft brakes are refurbished by a rapid chemical vapor deposition method utilizing a liquid carbon-precursor as a carbon source for carbon densification. Inductive and resistive heating means are utilized to carry out the method.
5543605 Microwave fiber coating apparatus August 6, 1996
Apparatus for heating a fiber using microwave energy. The apparatus has a source of microwave energy feeding and applicator. The applicator is configured to concentrate the microwave energy on a chamber holding a fiber. Fibers made or coated using chemical vapor deposition in the app
5528504 Equivalent thickness bending analogy for integrally stiffened structures June 18, 1996
A method is disclosed for developing the contour of tools employed for forming members exhibiting complex shapes. The members may be precipitation, heat treatable, metals or metal alloys which are age formed, although they be of any material which exhibits a relationship between a st
5509241 Fireproofing panel attachment system April 23, 1996
A system for attaching fireproofing panels to a poured structure. The panels are made with projecting members. In use, the panels line a form with the projecting members facing inward. When the form is removed, the panels are embedded in the poured structure by virtue of the projecting
5508109 Fiber blend for low cost, asbestos free friction material April 16, 1996
A fiber blend for use in friction materials. The fiber contains a blend of a highly fibrillated fiber, such as a fibrillated polyacrylonitrile fiber and a fiber with a high carbon content, such as an oxidized carbon fiber precursor.
5442160 Microwave fiber coating apparatus August 15, 1995
Apparatus for heating a fiber using microwave energy. The apparatus has a source of microwave energy feeding and applicator. The applicator is configured to concentrate the microwave energy on a chamber holding a fiber. Fibers made or coated using chemical vapor deposition in the app
5433991 Reinforcement system for mastic intumescent fire protection coatings comprising a hybrid mesh fa July 18, 1995
A reinforcement system for mastic intumescent fire protection coatings. Free floating hybrid mesh embedded in the coating is used to reinforce the coating. The hybrid mesh is made from a combination of high temperature and low temperature yarns.
5432434 System for matching a new hole in an overlying member with an existing hole in an underlying mem July 11, 1995
A system is provided for matching a new hole in an overlying member with an existing hole in an underlying member. With a magnet placed in the existing hole, an indicator device having an internal cavity, an outer boundary, and a ferrous ball freely movable within the internal cavity is
5431984 Composite preforms with groves for fibers and groves for off-gassing July 11, 1995
The invention is directed to composite preforms which comprise reinforcing fiber deposited in grooves pre-formed in a metal or ceramic foil.
5427304 Method of manufacturing composites June 27, 1995
Methods for and preforms for making fiber reinforced composites are disclosed. According to the invention, preforms which allow composites to be machined are provided. Also, preforms with a uniform debulking ratio are provided with non-uniform fiber placement. In addition, methods of
5404687 Intumescent fireproofing panel system April 11, 1995
A system of fireproofing panels. The panels are light weight and easy to install. Lap joints are formed between the panels and simply secured with screws. No fireproofing material need be applied over the joints or the screws. In one embodiment, the panels are screwed to a corrugated
5404641 Method of drilling through contiguous plate members using a robotic drill clamp April 11, 1995
A system is provided for drilling through contiguous first and second plate members so as to avoid the formation of burrs at their interface. Using a jig, the plate members are held together at distant locations while assuming a desired mutual orientation in a longitudinally extending
5397595 Method of densifying porous billets March 14, 1995
In accordance with the invention there is provided a method of producing a densified carbon preform having interior a porous region of graded carbon-silicon carbide, carbon-silicon nitride or ceramic-ceramic composition.
5395584 Nickel-base superalloy compositions March 7, 1995
Nickel-base superalloy composition for the repair, coating or rebuilding of the surface of a superalloy substrate, such as a single crystal nickel-base superalloy, to impart thereto surface areas having improved high temperature properties such as hot corrosion resistance. The present
5389152 Apparatus for densification of porous billets February 14, 1995
A porous preform is densified by heating while emersed in a precursor liquid. Heating is achieved by passing a current through the preform or by an induction coil immersed in the liquid. Ways to control the densification process are also described.
5388398 Recuperator for gas turbine engine February 14, 1995
A system for preheating air before it enters the combustion chamber of a gas turbine engine includes a recuperator which extends between, and is supported by, forward and rear headers. Cold air to be pre-heated by the recuperator flows through an entry passage in the forward header, then
5379647 Hole elongation testing system January 10, 1995
A system for testing and measuring hole elongation or deformation in a test article. The system includes a frame, a bearing member, and a referencing arm. The frame has a receiving area adapted to receive a portion of a test article. The bearing member is positionable into a hole of the
5373743 Backsplash protection for ultrasonic inspection system December 20, 1994
A gas jet is positioned above the water nozzle of a system provided for ultrasonically detecting flaws in an article to be inspected. The water nozzle directs a substantially level water jet stream against an upright surface of the article as it is moved transversely of the nozzle. A
5368095 Gas turbine recuperator support November 29, 1994
A system for preheating air before it enters the combustion chamber of a gas turbine engine includes a recuperator which extends between, and is supported by, forward and rear headers. Cold air to be pre-heated by the recuperator flows through an entry passage in the forward header, then
5364571 Method of making a composite material November 15, 1994
Net shape composite articles are made by a molding process. The molded preform is densified in a process where the rate of temperature increase is controlled to prevent distortion. The densified composite objects are impregnated with a secondary material to provide desirable properties s
5362344 Ducted support housing assembly November 8, 1994
A method is disclosed of making an integral structure comprised of inner and outer coaxial shells mutually supported so as to define an annular passageway between the shells. The integral structure may be an air inlet housing for a gas turbine engine and the inner shell may be a hub memb
5350466 Creep resistant titanium aluminide alloy September 27, 1994
Creep resistant titanium aluminide alloy article consisting essentially of, in atomic %, about 45 to about 48 Al, about 1.0 to about 3.0 Nb, about 0.5 to about 1.5 Mn, about 0.25 to about 0.75 Mo, about 0.25 to about 0.75 W, about 0.15 to about 0.3 Si and the balance titanium. The articl
5349811 Pulsed fuel injection system for reducing NO.sub.x emissions September 27, 1994
A system for reducing the formation of NO.sub.x pollutants during the combustion of liquid fuel in a gas turbine engine. The system comprises introducing an externally modulated, rapidly-pulsed, oscillated or sinusoidal fuel flow delivery rate (generically referred to as "modulated")
5341303 Method of developing complex tool shapes August 23, 1994
A method is disclosed for developing the contours of forming tools for fabricating metal members of complex shape such as wing skin and fuselage panels for aircraft. A computer simulation is performed of the age forming process on a geometrical representation of a member having the mater
5341213 Alignment of radiation receptor with lens by Fourier optics August 23, 1994
method and apparatus for aligning a photoreceptor, such as a CCD array, at a back focal plane of a lens, as may be employed in the construction of a sensor of an imaging system, employs a pair of sine-wave gratings arranged perpendicularly to each other and disposed in front of the lens.
5338566 Method utilizing a ceramic for temperature measurement August 16, 1994
A ceramic thin film applique provided on a substrate effects an optical transition at a predetermined elevated temperature. Below the transition temperature, the applique exhibits distinctive visual and physical characteristics, for example color, opaqueness and/or texture, but when
5311639 System for detecting and removing foreign object debris May 17, 1994
A system for detecting and removing foreign object debris from an enclosed region is capable of insertion through a small-sized opening. A source of light is optically transmitted through a first window in the outer peripheral surface of an elongated borescope adjacent its distal end to
5271954 Fluid flow visualization system December 21, 1993
The invention concerns the application of a layer of ceramic or glass particles to the surface of a substrate which is to be heated. The glass or ceramic particles are sized and mixed with an organic binder which yields a thin slurry consistency. The carrier or binder hardens. The part
5261608 Multi-line fluid supply manifold assembly November 16, 1993
A multi-line fluid supply manifold assembly comprising multiple parallel fluid supply lines for supplying fluid through a common block section to a fluid-receiving member. The assembly contains individual fluid supply fittings to which the fluid supply lines are attached, such as by
5260137 Infiltrated fiber-reinforced metallic and intermetallic alloy matrix composites November 9, 1993
Reinforced metallic or intermetallic alloy matrix composite materials which are reinforced by the incorporation of preferably small-diameter ceramic fibers infiltrated within a metal bonding layer. The bonding layer comprises a foil, such as copper, which forms a molten eutectic alloy wi
5239830 Plural engine power producing system August 31, 1993
Two gas turbine engines are interconnected through a pneumatic, mechanical, hydraulic, or power link. This power link runs from the gas producer shaft of one engine to the gas producer shaft of the other engine either delivering or absorbing power directly to or from each other. The gas
5223651 Supersonic combustion engine and method of combustion initiation and distribution June 29, 1993
A supersonic combustion air breathing jet engine and method of igniting fuel. The engine has means for providing a spatially controlled combustion distribution of fuel with an ignitor that provides a volumetrically diffuse discharge of energy to initiate a controlled relatively rapid
5211005 High density fuel injection manifold May 18, 1993
A fuel injection system for use in the combustor section of a gas turbine engine is provided with first and second manifolds of toroidal configuration. First outlet nozzles of a plurality of fuel injectors associated with the first manifold are positioned at spaced circumferential lo
5193789 Automatic clamping apparatus March 16, 1993
Apparatus for releasably clamping a range of sizes of complex shaped articles having an upright web and laterally disposed upper and lower flanges. A first set of upper and lower flanges of an article placed on a work platform extends towards a first edge of the platform and a second
5184769 Tooling and method for consolidating a filamentary reinforced metal matrix composite February 9, 1993
The tooling includes a central die member and an outer die member spaced thereabout to form an annular, draftless chamber for receiving a composite preform. An annular punch is received in the chamber for pressing the preform at an elevated temperature sufficient to consolidate and bond
5184456 Gas turbine motor drive February 9, 1993
A gas turbine engine which includes a starter/generator mechanically coupled thereto and an electric oil pump motor for driving an oil pump is started in a manner which assures a continuous and uninterrupted supply of lubricating oil to the moving components of the engine. According to o
5168169 Method of tool development December 1, 1992
A method is disclosed for developing the contour of tools employed for forming aluminum alloy members exhibiting complex shapes. The members are precipitation, heat-treatable, aluminum alloys which are age formed. The resulting member is formed to the desired contour and, simultaneously,
5152141 Management of electrically driven engine accessories October 6, 1992
A plurality of accessories operatively associated with a gas turbine engine are driven by electric motors. A first motor controller initiates operation of a starter/generator mechanically coupled to the engine. After the engine has been started, the motor controller is used to accelerate
5135795 Ceramic coating for temperature measurement August 4, 1992
A ceramic thin film applique provided on a substrate effects an optical transition at a predetermined elevated temperature. Below the transition temperature, the applique exhibits distinctive visual and physical characteristics, for example color, opaqueness and/or texture, but when
5133808 Cleaning process for radioactive machine shop turnings July 28, 1992
The present invention relates to a process provided for cleaning magnesium thoriated scrap turnings resulting from machining operations. It results in the recovery of a maximum possible amount of magnesium thorium alloy for future use while ensuring protection of the environment. The pro
5101928 Power pack suspension system April 7, 1992
A suspension system for mounting a power pack including engine, transmission, and associated equipment to the frame of a land vehicle, such as a tank. The suspension system includes static supports for substantially immovably mounting the power pack to the frame at spaced locations a
5101919 Steering system for tracked vehicles April 7, 1992
A steering system for a tracked vehicle extracts a portion of power from an engine which propels the vehicle, and combines the power with the remainder of the engine power by differential gear assemblies at the tracks of the vehicle for effecting a steering movement of the vehicle wh
5080934 Process for making abradable hybrid ceramic wall structures January 14, 1992
Abradable wall structures for high temperature applications, such as in turbine housings and the like. The wall structures comprise a superalloy metal base plate supporting a superalloy metallic cellular structure, the cells of which are filled to a substantial extent with at least one
5077141 High strength nickel base single crystal alloys having enhanced solid solution strength and meth December 31, 1991
Disclosed are novel nickel base single crystal alloy compositions consisting essentially of, by weight, about 4.0-10.0% chromium, 1.5-6.0% cobalt, 1.0-12.0% molybdenum, 3.0-10.0% tungsten, 2.5-7.0% titanium, 2.5-7.0% aluminum, 3.0-10.0% tantalum, about 0.02%-1.5% of hafnium and/or ab
5067454 Self compensating flow control lubrication system November 26, 1991
An automatic self compensating flow control lubrication system for continuously supplying the requisite amount of lubricant to at least one component of a drive system. One or more operating parameters, such as scavenge temperature, are continuously monitored and the information prov
5064727 Abradable hybrid ceramic wall structures November 12, 1991
Abradable wall structures for high temperature applications, such as in turbine housings and the like. The wall structures comprise a superalloy metal base plate supporting a superalloy metallic cellular structure, the cells of which are filled to a substantial extent with at least one
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