Abstract: A device for measuring a wear condition on the plain bearing surface of a sensor plate comprises a measuring apparatus, which has wear sensors of a sensor plate integrated into the plain bearing surface. To capture the material removal at the plain bearing surface due to wear an evaluation apparatus is in signal connection with the wear sensors. The evaluation apparatus is designed, with respect to programming, in such a way that a change, in particular an increase, in the ohmic resistance value of the electrical conductor of a certain wear sensor can be captured in dependence on its own material removal, in order to thereby ensure that the amount of the material removal at the plain bearing surface and/or the remaining thickness of the plain bearing surface at the location of said certain wear sensor can be inferred from the detected change in the resistance value.

Abstract: A brake device includes: a fixed member; a moving member which is movable between a retracted position in which the moving member is adjacent to the fixed member and separate from a braking member, and a braking position in which a friction plate of the moving member contacts the braking member and provides a braking force to the braking member; an elastic member connected between the moving member and the fixed member; a coil disposed in the fixed member; and a controller which provides an operating current to the coil when the elevator is in normal operation, wherein the controller is configured to implement a test mode in which the controller provides a test current less than the operating current to the coil and determines whether the moving member has been attracted to the retracted position.

Abstract: A brake caliper arrangement includes a housing, a restoring device, a first brake lining arrangement and a second brake lining arrangement. The first brake lining arrangement and the second brake lining arrangement can be moved relative to one another from a respective starting position with a reduction of an initial spacing which exists between them. The restoring device includes first and second restoring elements. The first restoring element may prestress the first brake lining arrangement into its starting position, while the second restoring element may prestress the second brake lining arrangement into its starting position. The first and/or second restoring elements may be supported, on both sides of a central region of the brake lining arrangement, on the associated brake lining arrangement. The first and/or second restoring elements may be twisted elastically at least in sections in order to generate the prestress.

Abstract: A clutch includes a first clutch half, a second clutch half, a first magnet arranged on the first clutch half, and a second magnet arranged on the second clutch half. The first and second magnets interact to enable a contactless detection of a state of wear of the clutch.

Abstract: Disclosed is a brake system for a railway vehicle, including linings each having at least one positioning member for mechanically fastening the linings in a predetermined position on the system with respect to a disc of the vehicle and a bearing face for tightly gripping the disc under the action of an actuator of the system, and at least one return member for separating the linings from the disc in order to release it when the linings are freed from the action of the actuator; each lining has at least one fastening member formed on an edge, the return member has two opposite end lugs connected to one another by an elastic portion and each mechanically fastened with a the fastening member, and the system is configured such that the fastening members and the end lugs are situated at a distance from the at least one positioning member.

Abstract: In some examples, a device can be used for measuring a length of a wear indicator on a brake assembly. The device includes a moveable component configured to move based on contact with the wear indicator. The device also includes a sensor configured to detect a displacement of the moveable component. The device further includes processing circuitry configured to determine the length of the wear indicator based on the displacement of the moveable component detected by the sensor.

Abstract: The present disclosure is to provide an adjustable vehicle wheel brake space inspection tool. The adjustable vehicle wheel brake space inspection tool is configured to detect the brake space of the vehicle wheel during usage and is configured to adapt to wheels of any size; and meanwhile, the adjustable vehicle wheel brake space inspection tool has the characteristics of high universality and detection accuracy, simple structure, low manufacturing cost, convenient operation, and the like.

Abstract: An adapter body is configured to be attached to a vehicle body in each of a first orientation in which a caliper body is coupled to the vehicle body via the adapter body in a first position corresponding to a first disc brake rotor having a first outer diameter, and a second orientation in which the caliper body is coupled to the vehicle body via the adapter body in a second position corresponding to a second disc brake rotor having a second outer diameter different from the first outer diameter. The indicator is configured to indicate an correspondence between an orientation of the adapter body and at least one of the first disc brake rotor and the second disc brake rotor.

Abstract: A resetting device by which a brake caliper can be reset after a braking-induced displacement and release of a brake. The resetting device has a spreading device which has resilient spreading elements. The spreading device is arranged in a central opening of the brake caliper. The spreading elements engage, outside the friction pads, directly or indirectly on one side at at least two abutment regions arranged spaced apart from one another relative to the center, of the brake pads, where the abutment regions have one abutment surface and one bearing surface on which the spreading elements are movably arranged. The spreading device has spring arms, of which in each case two lie against an associated pad carrier plate, where the spring arms are connected to one another in the central region of the opening. The spring arms are connected to a retaining bow which is attached to a brake carrier.

Abstract: A tool for checking wear in a Cardan joint comprises a base element, a trigger plate, an indicator pin, an indicator pin carrier and an indicator pin biasing element. The trigger plate is pivotally mounted to the base element about a trigger plate pivot axis (A) for pivotal movement between a first pivotal position and a second pivotal position. It has, at one end, a trigger plate yoke with a pair of opposed arms for engaging over one arm of a second yoke member of the Cardan joint and, at another end, an indicator pin opening. The indicator pin carrier is pivotally mounted to the base element to permit the angular position of the indicator pin carrier to be adjusted relative to the trigger plate. The indicator pin carrier is arranged between the base element and the trigger plate.

Abstract: A polymeric product with at least one surface subject to wear or abrasion, at least a portion of which product includes microcapsules of an indicator substance which is released to indicate a state of wear has been reached. The microencapsulated indicator substance may be a fragrance or a colorant. The indicating portion or zone may be a layer or a thin sheet of microcapsules in rubber or in the polymeric material making up the body of the product. There may be more than one indicating layer or zone in the product. The various zones may contain different fragrances or colorants, which may provide progressive indication of the state of wear.

Abstract: A method of determining an amount of wear in a spherical working surface of a bearing ring of a spherical plain bearing, the method including providing a reference groove of predetermined depth in an unworn working surface, using the reference groove and axial end faces of the bearing ring as reference surfaces for centering and aligning a measuring tool. The tool having a first surface, and a protrusion that extends from the first surface in radial direction and is adapted to fit into the reference groove and two or more radial openings that extend from a second surface of the tool. Determining the amount of wear by measuring the radial distance to the spherical working surface through each of the radial openings and comparing the measured value with a reference value measured using the tool for an unworn working surface comprising a reference groove of the same predetermined depth.

Abstract: A disc brake for a utility vehicle has a brake caliper which fits around a brake disc, is in the form of a sliding caliper, is fastened to a stationary brake carrier and has a central opening over the brake disc. The disc brake has two brake pads which are arranged in the brake caliper, can be moved in opposite directions and each have a pad carrier plate and a friction lining fastened thereto, and of which an action-side brake pad can be pressed against the brake disc by a tensioning device via at least one brake piston. The disc brake also has at least one spreading device with which the brake caliper can be returned after a displacement caused by braking and after a release of the brake. The spreading device has resilient spring units which act on the mutually opposing brake pads.

Abstract: A pressure vessel for holding fluids includes a tank and a coating disposed on an outer surface of the tank. The tank defines a cavity for holding fluids, and an outer surface of the tank includes a first visual characteristic. The coating includes an indicator layer, an outer layer, and a first intermediate layer. The indicator layer is disposed on the outer surface, the indicator layer including a second visual characteristic that visually contrasts with the first visual characteristic. The outer layer is disposed over the indicator layer, the outer layer including a third visual characteristic that visually contrasts with the second visual characteristic. The first intermediate layer is positioned between the indicator layer and the outer layer, the first intermediate layer being visually transparent or translucent. The disclosure also describes a coating including an indicator layer, an outer layer, and a first intermediate layer.

Abstract: There is provided a configuration that can precisely detect abrasion of brake shoes of a railway vehicle. A brake shoe abrasion detection unit includes: at least one abrasion detection RF tag that is attached at a position of an abrasion limit of a brake shoe of a railway vehicle tread brake or a position closer to a braking surface than the abrasion limit; and a reference RF tag that is attached at a position beyond the abrasion limit of the brake shoe.

Abstract: An ion implanter. The ion implanter may include a beamline, the beamline defining an inner wall, surrounding a cavity, the cavity arranged to conduct an ion beam. The ion implanter may also include a low emission insert, disposed on the inner wall, and further comprising a 12C layer, the 12C layer having an outer surface, facing the cavity.

Abstract: A disc brake for a utility vehicle is provided, having a sliding brake caliper which is fastened to a brake carrier and has a central opening above a brake disc. Two brake pads are acted on by at least one restoring device with resilient spreading elements which engage the brake pads and acts equally against the respective tightening direction. The spreading device is arranged in the central opening such that the spreading elements engage directly or indirectly outside the friction linings in the center region of the pad backing plates or at at least two contact regions of the brake pads arranged at a distance from each other with respect to the center. The contact regions each have a contact surface and a bearing surface, on which the spreading elements are movably arranged. The invention further relates to a corresponding brake pad set.

Abstract: A marking system for knowing precisely at which location on an electrical device a used brush and associated brush holder assembly were positioned to evaluate whether abnormal brush wear, abnormal operation or other anomaly is occurring and performing maintenance and/or replacement of components as needed.

Abstract: A disc brake, in particular for a commercial vehicle, has functional components that can be reused after use and subsequent examination for operational safety. The disc brake is designed in such a way that at least each of the safety-relevant functional components is equipped with at least one indicator, the operation-related service life of which is less than the safety-relevant ranges of the functional components.

Abstract: Tread profile of a pneumatic vehicle tyre—in particular for commercial vehicles—comprising a regroovable tread profile with radially raised profile elements (1, 2, 3, 4, 5) and with grooves (6, 7, 8, 9), which respectively separate two adjacent profile elements (1, 2, 3, 4, 5) from one another, wherein the grooves (6, 7, 8, 9) are bounded inwards in the radial direction R by a groove base (10) and on both sides in the axial direction by a profile element flank, forming the groove wall (12, 13), and wherein at least one regrooving indicator (14) for indicating the regrooving depth is respectively formed in one or more grooves (3), characterized in that, in at least one groove (8), all of the regrooving indicators (14) formed therein are formed in a groove wall (12) at a height H measured in the radial direction R of H>0 mm above the groove base (10), wherein the height H corresponds to the maximum radial abrasion position of the tyre for regrooving.

Abstract: A disc brake has a brake caliper, which reaches over a brake disc, is designed as a sliding caliper, is fastened to a stationary brake bracket and has a central opening over the brake disc. Two brake pads, which are arranged in the brake caliper and can be moved in opposite directions each have a backing plate and a friction lining fastened thereto. An action-side brake pad can be pressed against the brake disc by an application device by way of at least one brake piston. At least one restoring device is provided, by which the brake caliper can be returned after displacement and release of the brake caused by braking, wherein the restoring device has a spreading device, which acts on the brake pads lying opposite each other and acts in the same way against each particular application direction and has resilient spreading elements that act on the respective backing plates.

Abstract: A brake temperature sensing system for an aircraft including a sensor apparatus and an interrogation apparatus. The sensor apparatus includes a temperature sensor for attachment to a brake disc of an aircraft brake, and a relay for attachment to the brake. The temperature sensor is configured to wirelessly transmit a measurement signal containing information relating to a temperature of the brake disc, responsive to receiving a wireless interrogation signal. The relay is configured to receive an interrogation signal from the interrogation apparatus; wirelessly transmit the interrogation signal to the temperature sensor; receive the wireless measurement signal from the temperature sensor; and transmit the received measurement signal. The interrogation apparatus comprises a controller configured to generate an interrogation signal; and a transceiver configured to transmit the generated interrogation signal to the sensor apparatus; and receive the measurement signal transmitted by the sensor apparatus.

Abstract: A rotary engine having an outer body having an internal cavity with a peripheral wall having an insert opening defined therethrough in communication with the internal cavity, and a plurality of coolant passages defined through the peripheral wall in proximity of the insert opening, a rotor body rotatable within the internal cavity, and an insert removably received in the insert opening of the peripheral wall, the insert having a subchamber defined therein communicating with the internal cavity, with a minimum width of the insert opening being at least 0.75 inches. An outer body for a rotary engine and a method of inspecting in an internal cavity in an outer body of a rotary engine are also discussed; also, a rotary engine including a fuel injector having a tip received in the injector hole of the peripheral wall without protruding in the insert opening.

Abstract: An apparatus for indicating air disc brake pad wear includes a housing having a proximate end and a distal end; wherein a first opening is located at the proximate end. The housing receives a first rigid member having a proximate end and a distal end and partially contained in the housing, the first rigid member distal end extending from the distal end of the housing and configured to attach to an associated inboard disk brake pad assembly. The first rigid member moves linearly in response to the movement of the associated disc brake pad such that the proximate end of the first rigid member as seen through the first opening recedes as the associated disc brake pad wears. The housing may also receive a second rigid member configured to attach to a carrier of the air disc brake assembly for determining wear on an outboard disc brake pad.

Abstract: A bucket or blade including a main body having one or more wear indicators. The one or more wear indicators can be inspected and monitored to determine the extent or degree of wear of one or more wear surfaces of the main body of the bucket or blade. Also, a liner having one or more wear indicators configured for use with a bucket, blade, dump truck, or chute of a rock crusher. Also, one or more wear indicators configured for use with a chute of a rock crusher.

Abstract: A disc brake apparatus structured such that, on receiving a pressing force from an operating spring, a piston arranged within a cylinder formed in a caliper body presses a piston side pad. The disc brake apparatus includes a support part formed in a part of the caliper body, a reaction force receiver provided on and projected from the lateral side of the piston and opposed to the support part, and cam parts interposed between the support part and the reaction force receiver and, on receiving a rotation force, capable of spreading the distance between the support part and the reaction force receiver to thereby release the pressing force.

Abstract: A three-dimensional printed metal component for a lubricated system is provided. The metal component includes a three-dimensional printed metal body formed of a plurality of metal layers of a first metal and having a contact surface configured to movingly contact another component of the lubricated system. The metal component further includes at least one first three-dimensional printed wear-identifying layer of a material different from the first metal embedded in the metal body at a predetermined depth, a predetermined distance from an outer surface portion of the contact surface. The predetermined distance defines a predetermined wear state of the contact surface associated with replacement of the metal component.

Abstract: A part comprising a one or more removable wear indicators is provided. The part may be a stator segment comprising a plurality of airfoils. The stator segment may also comprise one or more mock airfoils at each end of the stator segment. Each of the mock airfoils may comprise an indicator configured to wear during a polishing process.

Abstract: A system and method for detecting wear and/or failure of a ball joint. The system having a ball housing which retains a ball head of the ball joint therein. A ball race is received within the ball housing and receives the ball head of the ball joint. An inwardly facing surface of the ball race engages the ball head such that the ball head can pivot in relation to the ball housing. A detection component is supported by the ball race and is spaced from an exterior surface of the ball head by a set distance. The detection component issues an indicator signal to alert a driver when the detection component detects at least one of a worn or a failure condition of the ball joint.

Abstract: A manifold through which a fluid is adapted to flow. The manifold includes an elongated member at least partially defining a fluid chamber through which the fluid is adapted to flow, a longitudinal axis, and an interior surface; a fluid liner disposed within the fluid chamber and adapted to dynamically respond to pressure fluctuations within the fluid chamber as the fluid flows therethrough; and a wear indicator positioned radially between the interior surface of the elongated member and the longitudinal axis. The fluid liner is subject to wear and/or erosion due to the flow of the fluid therethrough and/or the dynamic response of the fluid liner to the pressure fluctuations within the fluid chamber. The wear indicator is adapted to indicate the degree to which the fluid liner has been subjected to the wear and/or erosion.

Abstract: Tire for a civil engineering vehicle comprising a tread of high initial thickness E, this thickness corresponding to the thickness of material which can be worn during use, this tread comprising a smooth rolling surface, i.e. without any recesses, intended to come into contact with the ground during rolling, this tread being limited axially by lateral faces, these lateral faces being extended radially on the tire by sidewalls, this tread being provided with a wear indicator device to visually indicate a wear level of the said tread, this tire being such that the wear indicator device comprises, in combination, a plurality of grooves formed on at least one of the lateral faces of the tread and, for each groove, a visual index indicating a wear level corresponding to the percentage of the initial thickness E remaining to be worn.

Abstract: Apparatus, including a pipeline, featuring at least one pipe liner or coating configured to line or coat a pipe for receiving a process fluid flow, configured with at least one chemical taggant or tracer, and also configured to respond to the process fluid flow, and provide an indication about a degree of liner or coating wear or a location of wear in the pipe. The apparatus may also include the pipe having the at least one pipe liner or coating configured therein.

Abstract: A cleaning tool for a floor cleaning appliance is provided, including a main body carrying a cleaning cover which is subject to wear, and including a signal transmitter which provides a wireless signal in dependence upon the degree of wear of the cleaning cover. To be able to detect in a cost-effective manner when a maximum admissible degree of wear of the cleaning cover is reached, the signal transmitter is of rigid construction and fixed to a movable carrying part, the carrying part being held on the main body and being movable from a normal position to an evasive position against a restoring force, the carrying part protruding further from the main body in the normal position than in the evasive position, and the carrying part and/or the signal transmitter contacting the floor surface to be cleaned when a maximum admissible degree of wear of the cleaning cover is reached.

Abstract: A tire or tire tread features a helical, metallic RFID tag antenna, configured to provide an operable frequency response between 900 and 930 MHz upon receiving 100 electromagnetic waves having a power between 12 and 24 dBm. The helical, metallic RFID tag antenna is disposed within the at least one tread feature and has a wear rate commensurate with a wear rate of the at least one tread feature. The response(s) from the helical, metallic RFID tag antenna are used to track tread wear.

Abstract: A measurement device, in particular an electromagnetic flow meter, for measuring a flow, of a flowing fluid, comprising a measurement tube having an outer tube and a liner lining an inside of the outer tube, and a measurement structure for measuring a property of a fluid flowing through the lined measurement tube during measurement operation, capable of detecting abrasion of the liner.

Abstract: A tire of a vehicle is disclosed having at least one sensor, a control module and one or more indicators. The at least one sensor is located at a re-threading level of the tire to sense contact with ground surface. Upon contact with the ground surface, the at least one sensor generates data. The control module receives the data from the at least one sensor. Upon receiving the data, the control module determines a predefined condition. The control module transmits the data to a dashboard upon determining the predefined condition. The transmitted data is displayed on the dashboard which is communicatively connected to the control module for indicating wearing of the tire. In an embodiment, the dashboard provides signal relating to the displayed data. The one or more indicators is communicatively connected to the dashboard to receive signal relating to the data for indicating wearing of the tire.

Abstract: A disc brake rotor including a hub portion and a brake disc is provided. The brake disc extends radially outward from the hub portion and includes an outboard disc face and an inboard disc face. A plurality of channels are disposed in the brake disc that are circumferentially spaced from one another. Any one channel in the plurality of channels is open to either the outboard disc face or the inboard disc face. The brake disc includes an outer ring and an inner ring that are circumferentially continuous and uninterrupted along at least the outboard disc face and the inboard disc face. The outer ring is radially spaced from the inner ring with the plurality of channels disposed radially between the outer ring and the inner ring. Advantageously, this arrangement increases shear strength of the brake disc while providing enhanced cooling.

Abstract: An object is to make it make it possible to, before a protecting layer is exposed, visually recognize that a final stage of wear of a tread has been reached. A pneumatic tire (10) for an aircraft has: a carcass ply (12) that spans between a pair of bead portions; a belt layer (14) that is provided at a tire radial direction outer side of a crown portion (12A) of the carcass ply (12); a protecting layer (16) that is provided at a tire radial direction outer side of the belt layer (14); a tread (18) that is provided at a tire radial direction outer side of the protecting layer (16), and at which ribs (30, 32, 34) are demarcated and formed by circumferential direction grooves; and filaments (20) that are provided between the protecting layer (16) and the tread (18), or within the tread (18), that extend in a tire axial direction, and that are disposed with an interval therebetween in a tire circumferential direction.

Abstract: A wear sensing device is disclosed. The wear sensing device may be used in conjunction with a carrier roller assembly of a track assembly. The wear sensing device may have a wear sensor roller mounted to an axle of the carrier roller assembly. The sensor roller may be configured to contact a track pin assembly connected to one or more track links of the track assembly. The wear sensing device may further have a wear sensor mounted to the wear sensor roller and configured to generate a signal indicative of a wear parameter of the one or more track links.

Abstract: A friction lining with a wire bow spring including leg springs for the radially clastic support of the friction lining on a housing bridge of a brake caliper, wherein the back plate has a receptacle for a friction-lining wear sensor, and wherein a steel wire bow spring is a symmetrical to at least one longitudinal axis, and the wire bow spring is symmetrical to an imaginary transverse axis arranged rotated by a 90° with respect to the longitudinal axis, wherein the steel wire bow has a central U-bow for the friction-lining wear sensor, and wherein the U-bow is designed to be open at the top, the friction-lining wear sensor is accommodated integrated in the central U-bow and the U-bow is substantially larger than the friction-lining wear sensor, and therefore the friction-lining wear sensor can be mounted in the radial direction in the receptacle in the back plate.

Abstract: A seal assembly for sealing at least one negative or positive pressure zone which adjoins a surface which is perforated and moves in a movement direction in a machine for making paper, tissue or cardboard, has at least one sealing element which lies opposite the moving surface and is arranged in a receptacle which can be moved to change the format of the negative or positive pressure zone. In order to simplify the adjustability of the receptacle in order to position the sealing element, there is a signal transmitter which is connected directly or indirectly to the sealing element and the signal of which can be received on that side of the moving surface which faces away from the sealing element.

Abstract: A vehicle brake monitor assembly for an air disk brake includes a brake actuator having a pushrod projecting from inside a chamber of said brake actuator. The pushrod releasably actuates a lever arm of a caliper thereby moving the disk brake into a braking position when the pushrod is in an extended position and releasing the disk brake from the braking position when the pushrod is in a retracted position. The pushrod includes a pushrod shaft and a contact member biased in a telescoping relationship relative to the pushrod shaft and the lever arm of the caliper abuts the contact member counteracting the bias of the contact member. A sensor is integrated with the assembly proximate the contact member and detects movement of the pushrod relative to the lever arm and to the pushrod shaft.

Abstract: Described is an ejector unit for a milling drum of a mobile ground preparation machine comprising a discharge side and a reverse side that is opposite to the discharge side. It comprises a basic unit on the drum and an ejector plate, which is held on the basic unit by means of screw-threaded bolts. There is a positive fit between the basic unit and the ejector plate, which positive fit involves at least one pin, on the one hand, and at least one complementary cylindrical counterbore on the other hand, whereby the at least one pin and the at least one ejector are oriented so as to be coaxial to the longitudinal axis of the screw-threaded bolts. Preferably, a shoulder is also provided along the base of the basic unit on its side facing the ejector plate, and the ejector plate has at least one complementary shoulder, whereby the shoulder on the basic unit and the at least one shoulder on the plate have meshing regions, which in the mounted state prevent transverse displacements in three directions.

Abstract: A mounting system for a brake pad in the housings of a disk brake yoke in which the brake pad comprises at its ends two mounting ears (10), each ear being mounted in a housing of a disk brake yoke. The mounting system comprises for each pad ear, a spring (5) of linear or lamella shape, intended to bear, on the one hand, below a lower face (12) of the ear and, on the other hand, on the lower face of the housing of the yoke so as to separate the lower face (12) of the ear from the lower face of the housing.

Abstract: Provided is a hydrostatic transmission including a hub having a plurality of radially outwardly protruding teeth circumferentially spaced around the hub and at least one jaw having at least one tooth for engaging teeth on the hub to prevent rotation of the hub, thereby preventing rotation of an output shaft of a motor. When the at least one tooth on the jaw engages teeth on the hub, rotation of the output shaft is prevented by interference rather than friction.

Abstract: A mounting system for a brake pad in the housings of a disk brake yoke in which the brake pad comprises at its ends two mounting ears (10), each ear being mounted in a housing of a disk brake yoke. The mounting system comprises for each pad ear, a spring (5) of linear or lamella shape, intended to bear, on the one hand, below a lower face (12) of the ear and, on the other hand, on the lower face of the housing of the yoke so as to separate the lower face (12) of the ear from the lower face of the housing.

Abstract: One embodiment discloses a vehicle disc brake including: a disc rotor; a pair of friction pads disposed on both side portions of a disc rotor; and a pads returning spring suspended over radially outer sides of the friction pads and over an outer circumferential side of the disc rotor and configured to pull the friction pads away from the disc rotor when brakes are released and hydraulic pressure is removed. The pads returning spring has a base portion extending in an axial direction of the disc rotor, first spring portions extending from both end portions of the base portion, and engagement portions provided individually at distal ends of the first spring portions so as to engage with the friction pads. Further, a middle portion of the base portion is depressed in a direction in which the first spring portions extend as a second spring portion.

Abstract: Among other things, an entry monitor has circuitry to detect when a person enters a monitored space and an indicator perceptible to other people in the space to indicate a cleanliness state of the hands of the person who has entered the space.

Abstract: A replacement indicator can be operatively associated with an elastomeric article such that the replacement indicator is visually observable. In some cases, the replacement indicator can be secured on or along the elastomeric article. Gas spring assemblies and pneumatic tires including a replacement indicator, as well as methods of manufacture are also included.

Abstract: A wear indication system for use in turbine engines to measure the rate of gap closure between a seal holder and a rotor disk in a compressor blade assembly is disclosed. The wear indication system may include a support system capable of supporting a wear indicator formed from a relatively soft wear material without enabling the wear indicator to shift position or to fall out. One or more wear pins may be releasably attached to a compression plate with a seal holder. The seal holder may restrain the wear pin in position in an interference fit. During turbine engine operation, the wear pin is used to determine the rate of gap closing between a rotor disk and a seal holder precisely so that gas turbine engine repair can be scheduled and proper actions be taken to prevent rubbing between rotating and stationary parts of a compressor.