Abstract: A turbine assembly including a first rotor assembly with a rotatable outer drum from which one or more stages of a plurality of outer drum airfoils is extended radially inward is provided. An outer casing surrounds the outer drum of the first rotor assembly. A seal assembly is coupled to the outer casing and positioned radially outward from an upstream-most stage of the plurality of outer drum airfoils. The seal assembly is positioned in axial alignment with the upstream-most stage of the plurality of outer drum airfoils. The seal assembly separates a first plenum from a second plenum. The second plenum is formed axially aft of the first plenum and is formed by the seal assembly, the outer casing, and the outer drum of the first rotor assembly. The first plenum is positioned radially outward from the upstream-most stage of the plurality of outer drum airfoils.

Abstract: A drill string section of a drill string for drilling in the ground having arranged on the outside of the drill string section at least one marking by means of which abrasion can be recognized.

Abstract: A device and method are taught for mounting an annular shaft seal between a bore and a shaft in which the shaft and bore may be subject to radial eccentricity. The device comprises an annular sealing case having a first end and a second end; a shaft sealing case having a first end and a second end; a flexible sealing linkage axially and sealingly connecting the second end of the annular sealing case to the first end of the shaft sealing case. The annular sealing case is shaped to receive a seal to seal against an interior surface of the bore, and the shaft sealing case is shaped to receive a seal to seal against an exterior surface of the shaft, and the flexible sealing linkage provides sealing between the annular sealing case and the shaft sealing case.

Abstract: A hub-bearing unit is provided with a hub, rotatable, with an axially outer flange portion configured for engagement with a rotatable element of a motor vehicle, a bearing unit provided with a fixed radially outer ring, configured for engagement with a fixed element of the motor vehicle, a first, axially outer, crown of rolling bodies, and a second, axially inner, crown of rolling bodies, interposed between the radially outer ring and the hub. The radially outer ring is held in position with respect to the knuckle by a stop ring, positioned on the axially inner side of the radially outer ring in a seat formed on the radially outer ring.

Abstract: The blower of the present invention comprises a gas blowing part which holds an impeller which blows gas, a motor part which holds a rotor which makes the impeller rotate, and a partition wall part which partitions the gas blowing part from the motor part. The top end part of the rotor in the axial direction passes through the partition wall part and supports the center of rotation part of the impeller present inside the gas blowing part. At the through hole of the partition wall part through which the top end part of the rotor in the axial direction passes, a noncontact type shaft seal is arranged. Further, the surface of the partition wall part facing the impeller is formed with a groove for trapping foreign matter.

Abstract: A device and method are taught for mounting an annular shaft seal between a bore and a shaft in which the shaft and bore may be subject to radial eccentricity. The device comprises an annular sealing case having a first end and a second end; a shaft sealing case having a first end and a second end; a flexible sealing linkage axially and sealingly connecting the second end of the annular sealing case to the first end of the shaft sealing case. The annular sealing case is shaped to receive a seal to seal against an interior surface of the bore, and the shaft sealing case is shaped to receive a seal to seal against an exterior surface of the shaft, and the flexible sealing linkage provides sealing between the annular sealing case and the shaft sealing case.

Abstract: A method is provided for forming a gasket for sealing opposing flange surfaces of a pipe having corrosive fluid flowing therethrough. The method comprises defining a gasket profile incorporating a serrated profile core having a flange extending radially inward therefrom. A deformable pillow extends radially inward from the serrated profile core, to define a gasket intermediate portion about the flange, and a gasket inner portion radially inward from the flange. The deformable pillow material and thickness are selected such that upon compression to a thickness no less than the core thickness, the gasket inner portion exhibits a stress level sufficient to preclude corrosive liquid flowing through the pipe from passing radially outward beyond the gasket inner portion, and the gasket intermediate portion exhibits a stress level sufficient to preclude gas and liquid flowing through the pipe from passing radially outward beyond the gasket intermediate portion.

Abstract: The invention proposes an assembly (1) comprising: an exhaust casing (20), rotating about an axis (X-X), comprising a flange (23) for attachment to a mounting (42); a sealing plate (30) for rotation about the axis, the plate being added to the attachment flange of the casing and having a radial section comprising: a radially inner end portion (32), a radially outer end portion (34), and a bend (31) extending between the two end portions, said portions forming therebetween an angle of 80 to 100 degrees, the outer end portion having a length in an axial direction (L34) equal to 15% to 35% of the height (H) of the plate measured in the radial direction around the rotation axis, the outer end portion extending parallel to said axis, and said bend being open in the downstream direction relative to the flow of air.

Abstract: A system and for determining health of a fluid seal member including a fluid seal member; a transducer in force transmitting contact with the fluid seal member to generate an output signal based on an amount of force and/or pressure applied to the transducer; a radio frequency (RF) transponder operably coupled to the transducer to store the output signal of the transducer; a reader within an operable distance from the RF transponder to transmit electromagnetic energy to the RF transponder and receive the output signal of the transducer stored in the RF transponder through a radio frequency communication link; and a processor coupled to the reader, to determine health of the fluid seal member.

Abstract: Cross-type universal joint and a shell-type needle bearing that is used therein. The portions on the outer surface of the shell-type outer ring for which there is a possibility of coming in sliding contact with the tip end edges of at least two seal lips of a plurality of seal lips of a seal ring are selectively covered with a corrosion resistant coating. Preferably, the entire outer surface of the shell-type outer ring is covered by a chemically treated film having anti-corrosion properties.

Abstract: A container defines an interior volume, an opening into the interior volume, and a sealing surface bordering the opening. A closure assembly for the container comprises an imperforate sealable metal liner for covering a container opening in its entirety. A radio frequency identification tag includes a microprocessor electrically coupled with an antenna through mounting contacts extending from the microprocessor to the antenna for receiving, storing, and transmitting digitized information. Electromagnetic interference with receiving, storing, or transmitting of digitized information to or from the radio frequency identification tag is controllable by restricting electrical coupling of the microprocessor with the imperforate metal liner to the mounting contacts. When sealed over a container opening to cover a container opening in its entirety, the imperforate metal liner abates migration of fluids between a container interior volume and an exterior of a container.

Abstract: A container closure assembly includes a closure, an inner seal, and a radio frequency identification tag. The inner seal comprises a sealable film laminated to a metallic foil, and includes a first surface for sealing engagement with a container sealing surface, and a second, opposed surface for non-scaling engagement with a backing liner, a facing liner, or a glued-in closure liner. The radio frequency identification tag includes a microprocessor electrically coupleable with an antenna for receiving, storing, and transmitting digitized information. The inner seal minimizes migration of fluids between a container interior volume and an exterior of a container when the inner seal is sealingly engaged with a container sealing surface. The radio frequency identification tag is includable in the closure assembly without the closure assembly electromagnetically interfering with the receiving, storing, or transmitting of the digitized information.

Abstract: To monitor a sealing arrangement for sealing a shaft relative to a stationary part having a shaft sealing ring with a shaft conductor surface arrangement, a stator sealing ring with a stator conductor surface arrangement that is insulated from the shaft conductor surface arrangement, and a capacitive measuring arrangement, the stator conductor surface arrangement has a first stator conductor surface and at least a second stator conductor surface that is electrically insulated from the latter, and the shaft conductor surface arrangement has at least one shaft conductor surface, and the measuring arrangement has a device for detecting an electric capacitance between two stator conductor surfaces of the stator conductor surface arrangement, the electric capacitance between two stator conductor surfaces of the stator conductor surface arrangement is detected during operation.

Abstract: A seal failure prediction system consisting of a seal component and a member conveniently placed; such member, which may be in the form of a strip, a set of wires, or a single wire, generating a characteristic electrical or audible signal when the seal component wears a certain amount.

Abstract: A sealing device for a coolant supply on a rotating spindle is characterized in that a first brush seal (4) and a second brush seal (5) are arranged one after another in series on the spindle (2). Hereby the technical problems of the prior art are avoided and an improved device is made available, which makes possible a reliable sealing of the supply of coolant to a quickly rotating tool spindle, which exhibits no sudden failure, and which nonetheless is cost-advantageous in production and installation.

Abstract: The invention pertains to a sealing arrangement 10, 10a, which acts between a housing 12 and a component 14 installed in the housing 12, with a stop 16, permanently connected to the housing 12; with a spring 20, which is supported on the stop 16; and, with at least one first sealing element 22 in working connection with the spring 20. Abutment 34 is designed to be adjusted against the force of the spring such that the spring 20 is completely compressed—squeezed into a block—and additional load can be exerted on the sealing element 22, so that in particular any leakage which has developed can be stopped—on an emergency basis—by the exertion of additional load on the sealing element 22, which has the effect of increasing the sealing force which the sealing element 22 exerts.

Abstract: The present invention is a leak prevention system that monitors and detects loosening of a valve. The leak prevention system includes a biasing member, a tightening member, and a pulling member. The biasing member has a first end and a second end, the first end being in communication with the tightening assembly, while the second end being in communication with the pulling assembly. The tightening assembly is carried by the valve, is adapted to tighten the packing nut should packing from the valve loosen. The pulling assembly is adapted to pull the tightening assembly via the biasing member after packing wears away, such that the wearing away loosens the tightening assembly and the constant force of the biasing member, supported by the pulling assembly, causes the tightening assembly to move. After packing has worn away, a visual indication can indicate to an operator that the valve may soon leak.

Abstract: A seal profile for the closing edge of a door includes a body and at least one chamber defined within the body. A deformation sensor is disposed within the at least one chamber. At least one sealing lip defines proximal and distal ends, the proximal end being attached to a surface of the body. The at least one chamber is disposed substantially centrally and on an end region of the body. The at least one sealing lip extends outwardly from the end region of the body from a location adjacent to the at least one chamber. The at least one sealing lip protrudes obliquely with respect to the end region. The distal end of the at least one sealing lip extends further from the end region than the at least one chamber.

Abstract: The present invention provides for a seal arrangement comprising monitoring means and a seal portion. The monitoring means comprises at least one means for determining the integrity of said seal portion, said determining means being arranged to deliver a signal to at least one radio frequency identification (RFID) means for producing an output signal in response to the integrity of the seal portion as determined by the said means for determining. The present invention also provides a container, a pipe section, a pipeline and a closure member provided with such a seal arrangement.

Abstract: A seal for preventing leakage of fluid from between a first member and a second member has a seal body and a seal wear indicator. The second member is capable of moving toward and away from the first member. The seal body is adapted for engaged contact with the first and second members so as to prevent leakage of fluid as long as the seal has not worn beyond a specified depth. A seal wear indicator is positioned within the seal body at approximately the specified depth, such that when the seal has worn to the specified depth, a change in the optical conductor is detected, indicating that the seal needs replacement.

Abstract: The present invention relates to seals having textured features. The present invention particularly relates to seals having contact surfaces with said features wherein the contact surface seals properly and is resistant to wear. The contact surface is able to perform in very severe environments, such as those found in earthmoving applications.

Abstract: An o-ring sealing device, molded with an imbedded piezoelectric element, for use in vacuum systems. The imbedded element, of a circumferential length, has an oblong cross-sectional shape, the oblong shape having a pair of ends for externally connecting to a signal processor. The piezoelectric element is concentrically disposed and centrally placed within a mold cavity of a predetermined diameter. The cavity is filled with an elastic material fully encapsulating and insulating the piezoelectric element.

Abstract: An apparatus and a method for determining wear of a feedscrew and barrel combination includes measuring wear of the barrel using a gage plug in a measuring aperture in the barrel or an ultrasonic thickness gauge and measuring feedscrew wear with an eddy current sensor or a dial indicator mounted in the measuring aperture. A system gathers wear data from various production installations, analyzes the data to predict remaining life of the barrel and the feedscrew and generates an order for replacement parts to be manufactured and shipped just prior to the end of the remaining life.

Abstract: A seal integrity verification system scans for changes in impedance in a seal with integral coaxial waveguide, twisted pair wires, parallel ribbon wires or parallel wires. The wires are monitored by a TDR to note changes in impedance. The changes indicate the location where the seal is not under proper compression to ensure a tight fit. This is especially useful in verifying that watertight doors on ships or submarines are sealing properly when shut.

Abstract: A circular seal (19) for the end face of a substantially cylindrical canister, the seal (19) having a substantially rectangular cross-section, and a recess (21) in one side thereof to reduce the area of said cross-section. In use the recessed area (21) of the seal (19) constitutes a weakened portion which will blow out elastically to relieve excess pressure.

Abstract: A suction roll assembly includes a suction roll having a perforated shell, and a suction box positioned within the suction roll. The suction box includes a holder, a seal strip adjacent the shell and carried by the holder, at least one target carried by the seal strip, and at least one sensor positioned in association with at least one target. Each sensor provides an output signal indicative of a position of at least one corresponding target.

Abstract: An apparatus and a method for determining wear of a feedscrew and barrel combination includes a measuring aperture formed in a wall of the barrel, a gage plug releasably retained in the measuring aperture and having an inner end curved to correspond to a curvature of a surface of the central bore surrounding an inner end of the measuring aperture, and a retaining plug releasably retained in the measuring aperture for maintaining the gage plug in place. When the plugs are removed, the gage plug can be measured for barrel wear and a probe can be inserted into the measuring aperture for determining feedscrew wear. A test bar simulating feedscrew wear is used to calibrate the probe.

Abstract: A radial lip seal including an annular support with a radially extending portion having an inner periphery. An annular seal lip formed of elastomeric material such as polytetrafluoroethylene is connected to the inner periphery. The lip has an inner side adapted to seal a circumferential surface of a shaft and an outer side. The outer side of the lip has a plurality of grooves or protrusions to vary the diameter of the lip. The varied diameter creates a substantial leak between the outer side of the lip and the circumferential surface. The leak created is sufficient to be detected by a low-pressure air test.

Abstract: Composite articles having a highly filled plastic component connected to a basic body are provided which avoid the occurrence of cracks in the plastic component under changing thermal conditions. More specifically, the plastic component is not fixed directly to the basic body but instead is fixed indirectly thereto via at least one intermediary component made of an elastic material. Preferably, the intermediary component is embedded by a frictional and/or positive connection with at least one projection in a groove or opening (28) of the plastic component.

Abstract: A watertight door seal compression indication apparatus is provided that includes a watertight door in a frame that has a casket disposed in a channel around the periphery of the door. A knife-edge on the doorframe is positioned to compress the gasket upon latching the door shut. Numerous switches are placed between the channel and the gasket and the switches are closed when the knife-edge edge fully compresses the gasket. A display that is responsive to the switches indicates whether the gasket was sufficiently compressed or not by either a green LED or a red LED respectively.

Abstract: A seal for preventing leakage of fluid from between a first member and a second member has a seal body and a seal wear indicator. The second member is capable of moving toward and away from the first member. The seal body is adapted for engaged contact with the first and second members so as to prevent leakage of fluid as long as the seal has not worn beyond a specified depth. A seal wear indicator is positioned within the seal body at approximately the specified depth, such that when the seal has worn to the specified depth, a change in the optical conductor is detected, indicating that the seal needs replacement.

Abstract: In an internal combustion engine which is a machine having an oil seal in which an oil seal mounted between a through hole through which a balance shaft is allowed to pass and a circumferential surface of the through hole is covered entirely by a cover, a retaining plate adapted to cover at least part of the oil seal is fixed with a bolt within the cover, whereby the oil seal is retained by the retaining plate at an axial setting position within the through hole. The, an extending portion is provided on the retaining plate in such a manner as to extend outwardly of the cover, so that the mounting of the retaining plate can be confirmed from the outside of the cover.

Abstract: A seal for preventing leakage of fluid from between a first member and a second member the second member is capable of moving toward and away from the first member, the seal is adapted for engaged contact with the first member and the second member so as to prevent leakage of fluid between the first member and the seal and between the second member and the seal, the seal being more easily deteriorated than the second member such that friction between the seal and the second member wears the seal faster than the second member, the seal being adapted to retain a fluid tight seal against the second member as long as the seal has not worn beyond a specified depth; and a conductor for placement about the second member, the conductor being attached to the seal at the specified depth so as to contact the second member when the seal has worn to the specified depth, such that the existence of electrical discontinuity between the conductor and the second member indicates that the seal requires replacement, the conducto

Abstract: Wear on the sealing surface of mechanical seals may be monitored by placing a sensor or conductor on the seal, at a position opposed to the sealing surface, such as on the back or opposite side of the sealing surface. Mechanical seals require the application of continuous external pressure to maintain fluid tight sealing integrity. Wear on the sealing surface may be monitored by measuring the amount of movement of the seal away from a predetermined starting point.

Abstract: A torque sequence template includes a head gasket backing that is constructed and arranged to support a head gasket when packaged with the backing. The head gasket backing has a plurality of tightening sequence punch-outs arranged thereon in positions corresponding to head bolt locations. The cylinder head bolts are used to secure an engine head to the block. The head gasket backing has sequence indicators provided next to the punch-outs that indicate the sequence in which the bolts are to be tightened.

Abstract: A sealable enclosure including a base and a cover attachable to the base, the base and cover have respective mating surfaces, wherein the base and cover form a chamber there between when the cover is attached to the base. A compliant gel sealant is disposed on the mating surface of one of the base and cover for environmentally sealing the chamber, with a visual indicator provided for determining that the chamber is sealed. In one preferred embodiment, the visual indicator comprises a non-opaque window formed in the cover, and a non-opaque tongue extending from the mating surface of the cover, the tongue aligned with the window such that a line of sight is provided through the respective window and tongue.

Abstract: Seal strip for a hollow circular cylindrical screening device, which screening device is intended to be used in a paper or cardboard machine for the production of paper or cardboard, the seal strip having an indicator for indicating wear of the seal strip. The indicator is arranged to continuously give a measure of a remaining wear allowance and preferably also a wear rate, of the seal strip.

Abstract: A multi-layered gasket for a combustion engine having a central gasket layer and a plurality of active and spacer gasket layers that are removably secured together is disclosed. The active layers are arranged in face-to-face engagement with the spacer layers in an alternating manner with the central layer being positioned in the center of the gasket. The spacer layers may be selectively removed or added to vary the compression ratio of the engine. Alternatively, spacer layers may be selectively substituted With additional spacer layers having differing thicknesses to selectively vary the compression ratio of the engine. Each of the gasket layers are provided with a visual indicator to distinguish the respective layers from one another. Retaining mechanisms for removably securing the gasket layers together are also disclosed.

Abstract: A sealing gasket (J) intended to be damped between two pipework connection flanges (5, 9), the said gasket comprising a sealing ring (1) including a rigid metal annular part (11, 13, 18, 16) with which are integral a number of radiating metal lugs (2) capable of being folded along the contour of a support flange. The sealing gasket having to be able to be mounted between flanges of different transverse dimensions, the metal lugs (2) are longer than the corresponding transverse dimension of the largest flanges on which the gasket can be mounted. The lugs can thus be folded to conform with the exact dimension of an assembly flange so that the gasket may be suitably supported centered by the said flange prior to the mutual assembly and tightening of the two flanges.

Abstract: In an internal combustion engine which is a machine having an oil seal in which an oil seal mounted between a through hole through which a balance shaft is allowed to pass and a circumferential surface of the through hole is covered entirely by a cover, a retaining plate adapted to cover at least part of the oil seal is fixed with a bolt within the cover, whereby the oil seal is retained by the retaining plate at an axial setting position within the through hole. The, an extending portion is provided on the retaining plate in such a manner as to extend outwardly of the cover, so that the mounting of the retaining plate can be confirmed from the outside of the cover.

Abstract: A sealing assembly for a crankshaft of a motor vehicle and including a sealing system having a radial sealing element, a track for the radial sealing element and supported on the crankshaft for rotation therewith, and a detector having a rotatable element formed integrally with the track and a stationary sensor cooperating with the rotatable element.

Abstract: An air bearing is usable in a vacuum, by restricting the air escaping from the air bearing to the immediate vicinity of the air bearing. This is accomplished by one or more pump-out slots concentrically surrounding the air bearing orifice, and by concentrically surrounding the outer pump-out slot with a sealing sheet which confines air escaping from outside the pump-out slots to within the perimeter of the sealing sheet. The sealing sheet is a compliant mechanical "wall", making only marginal contact with the bearing support surface, and is not a high friction seal. Hence free movement of the air bearing structure on the supporting surface is allowed, thus making this air bearing compatible with for instance an XY stage used in a vacuum chamber.

Abstract: A sealing arrangement which includes a sealing ring with a support ring extending substantially in the radial direction and is joined in the radial direction on one end to a first sealing element that lies in sealing contact with a first machine element nonrotatably with respect thereto and in a statically sealing manner, and is joined in the radial direction on another end to a second sealing element that is placed against a second machine element rotatably with respect thereto and in a dynamically sealing manner. The first and second sealing elements are each made of an elastomeric material, and the sealing ring has, in order to sense rotational movements of the first machine element about its axis, at least one auxiliary device that can move past a rotational speed sensor. The auxiliary device may be a multipole ring, rotatable together with the first machine element about its axis, that is made of a magnetizable material.

Abstract: A sealing assembly is disclosed for creating a seal between first and second mating members or components. The sealing assembly basically includes a seal retainer with one or more annular seals coupled thereto. The seal retainer including a substantially flat body portion lying in a plane and with at least one resilient retaining element integrally formed with said body portion as a one-piece, unitary member for engaging the seal(s) to retain the seal(s) thereto. The seal retainer has an indicator formed on its body portion to indicate if the seal retainer has been used. In the preferred embodiment the indicator is a raised protrusion which normally extends outwardly from the plane of body portion of the seal retainer. Once the seal retainer is used, the raised protrusion of the indicator is deformed inwardly into the plane of the body portion of the seal retainer.

Abstract: The invention relates to a method and a device for monitoring a seal (1, 6, 11, 19) for correct operation, including the tightness of such seal, preferably a seal on a shaft (5) surrounding the latter. At least one sensor (3, 3'; 7, 7'; 16, 16'; 20, 20') is present on the seal (1, 6, 11, 19) or in the seal (1, 6, 11, 19) or within the sealing material of the seal, such sensor directly detecting the mechanical-dynamic stresses or deformations or movements of the seal (1, 6, 11, 19) or of the sealing material (2, 12) of the seal and converts them into corresponding electric signals, which can be picked up on the sensor for their interpretation and processed further. The correct operation including the tightness of the seal (1, 6, 11, 19) can be deduced from the interpreted signal of the sensor.

Abstract: A rolling bearing unit has a hub which is formed with a housing for partly forming a constant velocity joint, wherein a connecting tube 20 of a magnetic metal plate is provided to have a base half portion 21 fitted onto the opening portion of the housing and a tip half portion 22 projecting from the housing, and a number of through holes 26 are formed in an axial portion of the base half portion and arranged circumferentially to function as a tone wheel.

Abstract: A piston ring having a keystone shape and an orientation feature on one of its surfaces for ensuring proper orientation of the ring during installation. The piston ring preferably has an outer peripheral surface that includes a sealing land with a nitride hardened surface to resist wear during the service life of the piston ring. A tapered surface is also provided on the outer peripheral surface adjacent to the sealing land.