Abstract: A sealing joint for an aircraft turbojet engine nacelle includes a bead designed to be mounted in a joint support. The sealing joint is characterized in that the bead includes a retaining projection which extends in a direction substantially transverse to a longitudinal axis of the sealing joint, the retaining projection being designed to extend through the joint support when the sealing joint is mounted in the support thereof and/or a sealing lip which extends under the bead in a direction substantially parallel to the longitudinal axis of the sealing joint and which is designed to be compressed on the joint support when the sealing joint is mounted in the support thereof.

Abstract: A vulcanizing bladder 3 comprises a first bladder 11 configured to contact with an inner circumferential surface of an unvulcanized tire (T) and a second bladder 12 arranged inside the first bladder 11. A first fluid G1 is to be supplied between the first bladder 11 and the second bladder 12, and a second fluid G2 is to be supplied to an inside of the second bladder 12. At least one of an inner circumferential surface 11s of the first bladder 11 and an outer circumferential surface 12s of the second bladder 12 is provided with a guide groove 31 extending in a tire axial direction through which the first fluid G1 can pass.

Abstract: A door construction for an airborne vehicle includes a door, a door frame, with the shape of door frame forming a gap between the door and the door frame in the outer surface of the door and the door frame when the door is closed, and a gap sealing device comprising an inflatable tube positioned in the gap with at least one tube inlet, the inflatable tube being configured to be inflated through the at least one tube inlet and to at least partially seal the gap between the door and the door frame when inflated.

Abstract: The present disclosure is applicable to all vehicles having an engine mounted therein. In one embodiment, an aft mount system for a gas turbine engine is disclosed. The aft mount system includes a vehicle chassis and at least one flexible mounting member disposed within the vehicle chassis, wherein when a gas turbine engine is received within the vehicle chassis, an exhaust portion of the gas turbine engine is substantially mounted within the vehicle chassis through engagement with the at least one flexible mounting member.

Abstract: The present invention is a wide channel door frame cooperating with a wide width knife edge of a door and latching mechanism: to accommodate a gap between finger stock seals when the wide knife edge door is in the open position, to provide electrical connectivity between the door and door frame when the wide knife edge door is received into the wide channel door frame in the closed position, to accommodate ease of manufacturing a straight channel, to accommodate ease of cleaning the channel after installation of the finger stock seals, and to accommodate ease of closing/latching and opening/delatching the door. An alternative embodiment includes a third strip of beryllium copper finger stock seals attached to the base of the channel for increased electrical conductivity or the addition of weather seals for exterior applications. Wide channels and knife edges can be made of desirable material, for example 304 stainless steel.

Abstract: An electronics frame for a wired pipe drill string, including a housing arranged to be disposed within the wired pipe drill string. The housing includes a chamber formed therein and one or more electronic components disposed in the chamber. A shape memory element is disposed in the chamber. The shape memory element is transitionable in response to a transition stimulus between a first shape permitting positioning within the chamber and a second shape sealingly engagable with the housing to isolate the one or more electronic components from fluid. A method of isolating an electronic component is also included.

Abstract: A method is provided for detecting leaks in the wing of an aircraft prior to the fitting of the wing to the rest of the aircraft. A wing sealing assembly for sealing the wing of an aircraft so that the wing may be leak-tested is also described.

Abstract: An increased resilience seal utilizing a sealed gas filled inner chamber in a bellows spring that functions as both a mechanical spring and a gas spring to provide a more constant level of separation force between two face plates to provide a seal between two mechanical components such as those found in an aircraft jet engine. The bellows spring is made of a plurality of walls that are joined together in a pressurized chamber that is filled with a gas, such as an inert gas. In alternative embodiments, the bellows spring is made of walls that are shaped and oriented to optimize the operating characteristics of the bellows spring when the pressure is increased in a sealed inner chamber in response to elevated temperature. In one embodiment, the walls forming a portion of the chamber overlap to optimize the geometry of the bellows spring.

Abstract: A butterfly valve for handling materials where the temperature of the materials flowing through the butterfly valve can exceed the breakdown temperature of the sealing member with the butterfly valve inhibiting contact of hot transportable materials with the sealing member to isolate the hot transportable materials from the sealing member. Cooling conduits maintain at least portions of the valve that contacts the sealing member at a temperature below the breakdown temperature of the sealing member to prevent seal failure.

Abstract: A butterfly valve with an undulating sealing surface, which has an inflatable annular seal mounted in a housing. A disk is pivotally mounted in the housing and has an edge with an undulating sealing surface and a peripheral sealing edge. The undulating sealing surface of the disk and a sealing face of the annular seal have non-mating profiles when the valve is in an unsealed condition. Pressure in a chamber proximate the annular seal causes the face of the annular seal to expand and deform and the face forms a high-pressure seal between the sealing ridge and the annular seal. Also includes a method for stopping delivery, of a conduit transportable material through a butterfly valve.

Abstract: A CPAP device includes a flow generator including an outlet, a humidifier including an inlet, and an adaptor connector between the outlet of the flow generator and the inlet of the humidifier. The connector includes a flexible and conformable sealing portion that is movable to accommodate misalignment.

Abstract: Apparatus and methods are provided to minimize the escape of fuel out of a fuel tank when a tank wall is penetrated by a bullet. In one embodiment, a pressure differential may be maintained between a pressure within a fuel tank cavity and another pressure outside the fuel tank cavity in order to minimize the loss of fuel upon penetration of the fuel tank. In another embodiment, a compressed rubber layer of fuel-reactive rubber may be provided which is adapted to be attached to a fuel tank wall and to swell upon contact with fuel in order to substantially seal a penetrated hole in the fuel tank wall.

Abstract: Radio-frequency (RF) leakage from shielded enclosures is minimized while ensuring applicable RF attenuation standards and access requirements of the Americans with Disabilities Act (ADA) by attaching an inflatable bladder to a door of an enclosure. Substantially surrounding the bladder is an electrically conductive material. When the bladder is inflated it makes contact with conductive material which in turn makes conductive contact with the door frame to create an RF seal. The use of the bladder and conductive material provides an improved RF seal and allows for the use of a low-profile threshold that permits ADA access to, and from, the enclosure.

Abstract: An apparatus including a flange topped by a fitting including a trap adapted to seize and drive a lid of a barrel for opening the same and two inflatable gaskets equipping the flange and the trap that are inflated for clamping the container and the lid of the barrel at the connection thereof. Contamination inside the barrel and inside the upper enclosure will only spread over small surfaces of the apparatus between the gaskets and to the connection of both parts of the barrel.

Abstract: An electromagnetic wave suppression material is fixed to a case of a communication module. The electromagnetic wave suppression material suppresses radiation of electromagnetic waves by coming into contact with a cage that is a module insertion portion of a chassis when the communication module is inserted into the cage. A piezoelectric element is provided on the case, and located between the case and the electromagnetic wave suppression material. When the communication module is inserted into the cage, the controller applies a voltage to the piezoelectric element to stretch it by the applied voltage, thereby increasing contact pressure between the cage and the electromagnetic wave suppression material.

Abstract: An apparatus and method for retaining an inflatable seal comprising a channel having a closed end and a pair of projecting legs. A plurality of spaced apertures in each of the projecting legs extend parallely along a longitudinal axis of the channel. A plurality of nuts align with the corresponding plurality of spaced apertures and an inflatable seal is disposed within the channel. A pin is disposed within each aperture, wherein each of the pins has a threaded portion threadingly engaging one of the nuts and a non-threaded portion projecting towards the neck to dispose the foot intermediate the pins and the closed end.

Abstract: Pressurized rotary machine comprising a canned or sleeved assembly of which the electrical connections are connected to the outside of the machine by an electric supply duct, the electrical connections passing from the canned or sleeved assembly to the outside via the electric supply duct by passing in succession through first, second and third hermetically sealed bushings, none of these hermetically sealed bushings through which the electrical connections pass being exposed to a pressurized gas.

Abstract: A butterfly valve with an undulating sealing surface, which has an inflatable annular seal mounted in a housing. A disk is pivotally mounted in the housing and has an edge with an undulating sealing surface and a peripheral sealing edge. The undulating sealing surface of the disk and a sealing face of the annular seal have non-mating profiles when the valve is in an unsealed condition. Pressure in a chamber proximate the annular seal causes the face of the annular seal to expand and deform and the face forms a high-pressure seal between the sealing ridge and the annular seal. Also includes a method for stopping delivery of a conduit transportable material through a butterfly valve.

Abstract: A butterfly valve for handling materials where the temperature of the materials flowing through the butterfly valve can exceed the breakdown temperature of the sealing member with the butterfly valve inhibiting contact of hot transportable materials with the sealing member to isolate the hot transportable materials from the sealing member. Cooling conduits maintain at least portions of the valve that contacts the sealing member at a temperature below the breakdown temperature of the sealing member to prevent seal failure.

Abstract: A downhole submersible pumping system includes a housing and a bag seal assembly. The bag seal assembly includes a seal bag and a fastening assembly. The fastening assembly is configured to exert a compressive force between inner and outer surfaces of a first end of the seal bag. The fastening assembly may include a first ring attached to the support tube, a second ring and a plurality of fastening members. The first ring may be configured for threaded engagement with the support tube. The second ring is configured for engagement with the first ring.

Abstract: A device to enhance sealing is provided. The device includes a body and a pressure cup. The pressure cup includes a channel, a first pressure channel, and a second pressure channel. The channel is formed in a surface of the body to surround a first portion of the surface. The channel is configured to hold an o-ring. The first pressure channel extends through the body and opens into the first portion of the surface. The second pressure channel extends through the body and opens into the channel. Pneumatic pressure within the second pressure channel is controlled to hold the o-ring in the channel when a second pressure within the first pressure channel changes.

Abstract: A plug to hermetically seal an aperture in a sheetmetal, or in the floor of a vehicle, comprising, a cap covering the aperture and comprising an external, circumferential flange resting on one side of the sheetmetal or of the floor and fitted with a first circumferential seal, an affixation portion entering said aperture and, a second circumferential seal configured at the cap or at the affixation portion and being a distance from the first seal and resting against the sheetmetal or the said floor, a cavity being subtended by the sheetmetal or said floor, the two seals and at least one wall of the plug, where said plug, includes a pressure-compensating chamber, which communicates with the cavity and, which compensates a change in pressure, caused by a change in temperature, inside the cavity, by changing the volume of the pressure-compensating chamber.

Abstract: Force balancing adjusts hydraulic fluid pressure in an upper piston area of a Rotating Pressure Control Device (RPCD) that has an inner housing rotatably engaged within an outer housing by an upper bearing and a lower bearing. The hydraulic fluid pressure is adjusted to balance net force in a upper piston area and a lower piston area. The fluid pressure adjustment creates a force differential that balances the total load transmitted through the upper bearing and the lower bearing and thereby extends the life of the sealing element and bearings. Additionally, a wear indicator signals the end of the useful life of the drill pipe sealing element.

Abstract: Apparatus and methods are provided to minimize the escape of fuel out of a fuel tank when a tank wall is penetrated by a bullet. In one embodiment, a pressure differential may be maintained between a pressure within a fuel tank cavity and another pressure outside the fuel tank cavity in order to minimize the loss of fuel upon penetration of the fuel tank. In another embodiment, a compressed rubber layer of fuel-reactive rubber may be provided which is adapted to be attached to a fuel tank wall and to swell upon contact with fuel in order to substantially seal a penetrated hole in the fuel tank wall.

Abstract: A panel assembly of the kind found in the air intake of a gas turbine engine or a fan duct is designed to be demountable for maintenance purposes. Consequently there exists between the panels a gap to be sealed. Thus, the assembly has a deformable seal for such a purpose and has an elongated, hollow resilient member mounted on a flange at the edge of one of the panels and arranged to be pressed against a flange at the confronting edge of the adjacent panel. The flanges are shaped such that the hollow member when pressed between the flanges effectively seals the gap between the panels and a portion of the seal member lies flush between the panel edges.

Abstract: A closure assembly with a shape memory polymer seal is provided for use with a vehicle. The closure assembly includes a frame member configured for attachment to the vehicle body to selectively transition from a closed position to an open position. The seal structure includes a base portion elongated along and attached to a peripheral edge of the frame member or the vehicle body, and a flexible contact portion extending integrally from the base portion and configured for sealing communication with an opposing surface. A thermally-activated smart material (TASM), namely a shape memory polymer member, is disposed inside a cavity within the contact portion. A thermoelectric device is in thermal communication with the TASM, and is characterized by a thermal differential when current flows therethrough. The TASM is activated in response to the thermal differential of the thermoelectric device, thereby altering at least one physical property of the TASM.

Abstract: Sealing device (11) for sealingly interfacing two adjacent blocks (2, 3) of an article handling machine, each provided with an aperture (6, 9), said sealing device (11) comprising a resilient static sealing joint (12) mounted along the edge (7) of one aperture (6), wherein the sealing joint (12) is hollow, and wherein the sealing device (11) further includes an injection valve (14) for injecting air in the sealing joint (12) to inflate it.

Abstract: The present invention discloses a sealing apparatus of a wafer carrier and a sealing method, and the wafer carrier is comprised of a wafer container and a cover, and includes a latch unit for integrally latch the wafer container and the cover. The wafer container has an open distal portion disposed on a surface of wafer container, and the sealing apparatus is installed between the open distal portion and the cover. The sealing apparatus includes an air intake/outtake valve and an air inflation sealing unit coupled to the air intake/outtake valve, and the air intake/outtake valve performs an air inflation to expand the air inflation sealing unit, and the wafer container and the cover are elastically latched after the inflation and the expansion of the air inflation sealing unit to achieve the sealing effect.

Abstract: The invention provides a seal for a slide-out room of a recreational vehicle. The slide-out room is movable in a range of positions including a retracted position and an extended position. The seal is compressible between the slide-out room and a side wall of the vehicle and includes at least one sensor capable of detecting a force or a lack thereof on the seal, to indicate if adequate compression of the seal has been achieved in a stop position of the room or if there is an obstruction in between the stop positions.

Abstract: A gasket for shielding a seam between two surfaces includes a resilient member, a first electrode, a second electrode and a conductive layer. The resilient member has a first side and an opposite second side. The first electrode is disposed on the first side of the resilient member. The second electrode is disposed on the second side of the resilient member. The conductive layer envelops at least a portion of the resilient member, the first electrode and the second electrode. The resilient member includes a material that is compressed when a first potential is applied between the first electrode and the second electrode and that is decompressed when a second potential, different from the first potential, is applied between the first electrode and the second electrode.

Abstract: Gate with an at least partially peripheral sealing means, with a retaining strip made from metal, within which the seal is arranged, wherein the seal may be activated pneumatically, with an adjustable plate which is located above the seal and is guided by guide means so as to be adjustable relative to the retaining strip, with an electrically conductive fabric strip which electrically connects the retaining strip to the plate, and with spring contacts which are arranged on the plate, are electrically conductive and may be brought into abutment with the rabbet of the installation frame provided on the building side.

Abstract: A refrigerator including a door that is fastened to the heat-insulating housing thereof and a swell chamber as a door-opening aid. The chamber can be impinged upon by a pressure medium and is disposed between the rear side of the door and a face of the housing. A reservoir feeding the swell chamber with a pressure fluid is disposed on a face of the door and can be compressed by pulling a door handle.

Abstract: An inflatable seal for sealing an annular space between two flange parts is formed by a hollow ring composed of elastic material. The hollow ring has a tubular cross-section with a peripheral wall and is provided with a connection for an inflation medium. The peripheral wall comprises, in at least one area of the tubular cross-section, a blocking element having a substantially larger cross-sectional dimension than the remaining part of the peripheral wall. Furthermore, a set of flange parts and a container comprising such a seal, and a method of manufacturing such a seal are disclosed.

Abstract: An inflatable sealing device includes a bushing and a plunger which is movably guided in the bushing through application of air pressure from an air supply to execute a predefined limited stroke. A sealing tube is connected to the plunger and has an interior space which is connected to the air supply to radially expand the sealing tube when air pressure is applied.

Abstract: A gasket for shielding a seam between two surfaces includes a resilient member, a first electrode, a second electrode and a conductive layer. The resilient member has a first side and an opposite second side. The first electrode is disposed on the first side of the resilient member. The second electrode is disposed on the second side of the resilient member. The conductive layer envelops at least a portion of the resilient member, the first electrode and the second electrode. The resilient member includes a material that is compressed when a first potential is applied between the first electrode and the second electrode and that is decompressed when a second potential, different from the first potential, is applied between the first electrode and the second electrode.

Abstract: A tire valve having a valve body engaging in a rim bore of a rim, in particular vehicle rim, which valve body forms a lower valve body section arranged on a side of the rim, in particular in the rim interior, in the assembled state, and an upper valve body section projecting from the rim bore, and in the region of the upper valve body section is designed to cooperate with a union nut, wherein the lower valve body section forms a ring shoulder offering an abutment for a flat edge section of the rim bore, and in which a ring groove which is open to the edge section is moulded, and against which the edge section can be gripped by tightening the union nut, and a moulded seal made from resilient material is provided to seal the rim bore with respect to the valve body, so that in the assembled and gripped state, an annular chamber section of the moulded seal engages in the ring groove and rests in sealing manner on the edge section of the rim bore, and a preferably hollow-cylindrical vertical section of the moulded

Abstract: A guillotine valve, used for example in pipelines includes a single block body incorporating sealing elements, each in the form of an annular hose section, which are made of an elastomeric material and which are hollow along their entire circumference, each providing an airtight pneumatic circumferential chamber filled with air. Due to the compressibility of the chambers the contact faces of the hose sections deform uniformly in relation to a closing blade. Convex contours on the internal faces of the hose sections result in a further sealing effect due the pressing together of the contact faces by the pressure of the pipeline fluid. The hose sections can each also incorporate a T-shaped metal core comprising an axial portion and a radial portion.

Abstract: A closure seal for doors, hatches and the like comprising a pneumatically inflatable sealing element of generally known configuration housed in a specially constructed channel-shaped retainer. The sealing element comprises a flat, relatively stiff base portion of predetermined width and a flexible portion comprising spaced apart side walls, joined with the base, and an outer wall joining with the side walls to form a hollow expandable section. The base forms shoulders where it joins with the side walls. A retaining channel, formed of sheet metal and of generally U-shaped cross section, receives the sealing element and is formed with longitudinally spaced apart, opposed, inwardly projecting elements forming longitudinally spaced apart constrictions of slightly less width than the base of the sealing element.

Abstract: A seal having a first seal mechanism adapted for insertion between a first structure and a second structure, wherein the first structure is in communication with a first medium and the second structure is in communication with a second medium. The seal also includes a second seal mechanism, which is pressuringly biasable against the first seal mechanism and against the second structure by the second medium. In certain embodiments, a system has a first structure in communication with a first medium and a second structure houses a seal assembly between the first and second structures. The seal assembly includes an interface seal disposed against the first structure and a flexible seal pressuringly biased against the second structure and the interface seal by a second medium.

Abstract: A gate seal for a knife gate valve comprising a sealing surface lining the gate channel and an integral gasket for compression between valve body halves, a chest seal for a knife gate valve comprising a body having an expandable sealing surface and one or more injection chambers adapted to receive an injectable packing, each chamber having a cross-sectional area that is completely surrounded by the body member, and/or a knife gate valve comprising one or both such seals. The chest seal body may comprise a knife gate slot that is peripherally surrounded by the body. The gate seal and the chest seal may comprise a single integral elastomeric member or separate components.

Abstract: The present invention is directed to an expandable pre-formed plug that is suitable for sealing and/or structurally reinforcing a structure having surfaces defining a space therebetween. The plug is comprised of at least an expandable inner core having an outer surface and a transportable outer skin that preferably substantially encapsulates the core. In a preferred embodiment, the shape of the unexpanded plug is designed to mate with the surfaces that define a space therebetween upon expansion. The adhesive skin is generally dry to the touch at room temperature, however, upon initiation of expansion, the inner core expands and the surrounding skin is displaced in a coordinated manner. After some period of expansion, the outer skin preferably durably adheres or bonds to the walls of the surfaces defining a space therebetween and the outer surface of the core. A method for using such a plug is also disclosed.

Abstract: An inflatable seal member for providing a fluid-tight seal. The inflatable seal member is particularly well suited to sealing a processing chamber having pressurized fluids therein. Outward forces (exerted by air pressure) to the inner surfaces of the seal member counteract inward forces (exerted by fluid pressure) to the outer surfaces of the seal member.

Abstract: An improved diaphragm for use with a gasket to prevent leakage of a pressurized fluid. The diaphragm has an internal groove which uses strong spring back and the pressure of the fluid to increase the gasket seating load, thereby providing a self-energizing seal which can accommodate changes in gasket load due to changes in fluid pressure. In one embodiment, a ring is shrink-fit or press-fit about the outer side edge of the diaphragm which improves strength and reduces the material cost.

Abstract: The expandable seal assembly can be used to seal the contents of a container. When air pressure is applied to a chamber, rods with leaf springs on a distal end extend outward mating an expandable elastic to the inside edge of the container to be sealed. A spring-mounted ball valve maintains the pressure in the chamber when the source of the air pressure applied to the chamber is removed.

Abstract: A sealing system on a first structural element having a first through-opening, including a first closing flap rotatable about an axis for closing the first through-opening. The sealing system can be coupled to a second structural element. The first closing flap is provided with a first dynamic seal on the radial outer circumference thereof. An elastic seal is provided on the wall of the first through-opening and adjacent the first dynamic seal. The inner diameter of the elastic seal is smaller in the non-operated state than the outer diameter of the first closing flap. The first structural element is provided with a second closing flap which essentially matches the first closing flap and can be swivelled together with the first closing flap. The dynamic seal can be inflated radially towards the outside by means of inner pressure when the first closing flap is in the closing position and in such a way that the elastic seal is at least partially and radially displaced towards the outside.

Abstract: A shape memory foam material is obtained by impregnating a base foam material in a thermoplastic substance, heating and compressing the same at a temperature the same as or higher than the softening temperature of a thermoplastic substance as well as less than the softening temperature of the base foam material, cooling down while retaining the compressed state, and releasing the pressure after the cooling operation. The compressed state of the shape memory foam material is retained in a room temperature by a hardened product of a thermoplastic substance existing at least in the surface layer part thereof. The compressed state is released by softening the hardened product by heating. Moreover, a soundproof cover for an automobile engine is obtained using this shape memory foam.

Abstract: This invention relates to a device a metod for ductchs sealing composed by a sealed bag, with no valve and or accesses, divided by a separator device wich can be un-welded before the application, containing separated chemical substances able to react and generate gas or any other action able to generate an inner pressure into the bag.

Abstract: An active window seal assembly is disclosed that operatively engages a movable window when the window is stationary and disengages the window when the window is in motion. The seal assembly comprises a stationary frame, a movable lip that is operatively connected to the stationary frame, and a cavity disposed between the stationary frame and the movable lip. Several configurations provide for movement of the movable lip when the movable window is in motion. The first configuration allows the cavity to inflate with air, thus forcing the movable lip away from the window. A second configuration provides that the air in the cavity be evacuated, thus pulling the movable lip away from the window. A third configuration provides that a voltage be applied to the stationary frame and the movable lip to create an electric field. The electric field draws the movable lip toward the stationary frame and away from the movable window.

Abstract: A high temperature sealing system is operative to seal an interface between adjacent hot structures and to minimize parasitic flow between such structures that move relative to one another in-plane or out-of-plane. The sealing system may be used to seal thrust-directing ramp structures of a reusable launch vehicle and includes a channel and a plurality of movable segmented sealing elements. Adjacent ramp structures include edge walls which extend within the channel. The sealing elements are positioned along the sides of the channel and are biased to engage with the inner surfaces of the ramp structures. The segmented sealing elements are movable to correspond to the contour of the thrust-directing ramp structures. The sealing system is operative to prevent high temperature thrust gases that flow along the ramp structures from infiltrating into the interior of the vehicle.

Abstract: A sealing device for a gap between two adjacent machine parts, including at least one inflatable, elastically stretchable tube, which is fitted into a groove in the sidewall of one of the machine parts, and which, when inflated, may, be positioned against a surface of the other machine part, which borders on the gap on the side opposite the groove, at least one end of tube (2) being provided with a circumferential, turned-inward portion (6, 16) that engages its interior, into which a supporting member (5, 15) is inserted on the inside.