Abstract: Damped door closer systems, door assemblies including the damped door closer systems, and methods of operating damped door closer systems. The damped door closer systems include a closer assembly and damping assembly connected to each other through a connecting arm.

Abstract: A sealing member for machine tools is capable of keeping sealing performance. The sealing member includes a support member and an elastic member formed in a flat plate shape. The elastic member includes an edge portion to slide on a sliding surface of a machine tool. The support member has a support surface facing a part of a front surface of the elastic member. The sealing member is mounted to the machine tool such that the elastic member is sandwiched between a mount portion of the machine tool and the support surface of the support member. The elastic member has a fixed portion sandwiched between the mount portion and the support member. A lip portion not sandwiched between the mount portion and the support member when the sealing member is mounted to the machine tool, the lip portion including the edge portion and configured to be curved.

Abstract: A turbocharger includes a tubular floating bearing inserted into a bearing housing and a shaft inserted into the floating bearing. An annular slinger is arranged on an outer circumferential surface of at least one of opposite axial ends of the shaft, which protrudes from the float bearing. The bearing housing defines an oil discharge space surrounding the slinger externally in a radial direction. The bearing housing includes a guide wall protruding from an inner wall surface of the oil discharge space. The guide wall is configured to guide oil in the oil discharge space toward the oil discharge port.

Abstract: A sealing arrangement for application in a robot joint. The sealing arrangement includes: a circular sealing assembly arranged between a swing and a base of the robot joint in a longitudinal direction, the circular sealing assembly defining a tubular cavity in a circumferential direction and having a gas inlet and a gas outlet; and an air channel coupled to the gas inlet and operable to continuously conduct pressured air flow into the cavity to maintain an air pressure inside the cavity above an air pressure outside the cavity, and thereby a high-speed airflow out of the gas outlet.

Abstract: A fluid dispensing system includes a motor housing and a piston pump assembly connected to the motor housing. A motor is mounted within the motor housing. The piston pump assembly includes a pump housing, a cartridge having a first end that extends into a second end of the pump housing, a piston that extends into a first end of the pump housing and the first end of the cartridge, and a packing stack within the cartridge and adjacent an inner surface of the cartridge and through which the piston extends. The cartridge is configured to be removed from the pump housing, and removal of the cartridge removes the packing stack from within the pump housing while leaving the pump housing connected to the motor housing.

Abstract: A novel split bearing cartridge assembly is provided having an inner race, clamp collars for securing the inner race to a shaft, a plurality of rolling elements within a cage, an outer race, a bearing container for encapsulating those components, and seals that sit within the openings in the bearing container. All of the above components are split such that the bearing cartridge may be assembled and disassembled on and from a shaft with relative ease. The split inner race extends axially such that the seals act between the openings in the bearing container and the extended portions of the inner race. A split housed bearing assembly that incorporates the novel split bearing cartridge assembly is also provided.

Abstract: Low-friction sealing assembly for a vehicle wheel-hub unit inserted inside an annular interspace defined between a flanged rotating element and a stationary element, coaxial with each other, of the wheel-hub unit to protect at least one ring of revolving bodies arranged between the stationary element and the rotating element, and having a first annular screen and a second annular screen during use integral with the rotating element and with the stationary element; and an annular seal having lips that extend axially and radially projecting from the first screen towards the second screen inside an annular chamber defined by the first and second screens; the sealing assembly being a multi-stage sealing assembly provided with a first inner collecting stage designed to collect and expel some of the contaminants.

Abstract: An actuator includes a piston and a housing. The piston includes a piston shaft that is configured to reciprocate within the housing. The actuator also includes a conductor coupled to the piston within the housing and configured to electrically couple the piston to the housing as the piston reciprocates within the housing.

Abstract: A locomotive sanding system is described for conveying sand from a sand tower to a sand box mounted on a locomotive. The invention is designed to prevent personnel from being subjected to sand and sand dust during the sand box being filled with sand from the sand tower. The system includes a universal sealing nozzle which may be used with the locomotive sanding system or other devices. The universal sealing nozzle includes an expansion seal extending therearound which may be moved from a retracted position to an expanded position. When the nozzle is inserted into the fill pipe of the sand box, the expansion seal is expanded to sealably engage the inside surface of the fill pipe.

Abstract: The invention relates to a seal for high pressure applications, in which a static and a dynamic sealing portion are separated from each other by a material thin point in such a manner that plastic flowing through the thin point is suppressed even if one of the two sealing portions is acted upon under high pressure as far as elastic compression.

Abstract: An actuator assembly having an end guide with a first end and a second end, the end guide defining an axis passing through the first and second end, a rod having an outer surface, the rod being movable along the axis through the end guide, a wiper disposed outwardly of the rod and within the end guide, a scraper disposed outwardly of the rod and within the end guide and spaced axially from the wiper towards the second end, a cavity defined between the wiper, the scraper, the outer surface of the rod, and the end guide, and an orifice defined in the end guide between the wiper and the scraper, the orifice defining a flow path for a lubricating fluid to flow into the cavity, wherein, the wiper and the scraper are disposed in contact with the outer surface of the rod for removing debris therefrom.

Abstract: A rolling bearing providing an outer ring, an inner ring, and a plurality of rolling bodies disposed between the inner ring and the outer ring, and a sealing device held by the outer ring and consisting of a first and second annular shield and an elastomeric sealing element held by one of the shields. The second shield extends axially and radially to protrude on the outside of the outer ring and cooperates with a radially outer lateral surface of the outer ring, to delimit a radial annular gap therewith. An annular tooth is formed on the radially outer lateral surface of the outer ring in front of the radial gap to shield the radial gap in axial direction. An annular groove formed in a position immediately adjacent to the annular tooth and on the side opposite to the second shield.

Abstract: An improved sealing apparatus and associated methods are disclosed herein. The sealing apparatus includes a housing defining a center axis, an alignment element positioned around the center axis, and a sealing element fixedly attached with the alignment element. The alignment element has first and second protrusions extending toward the center axis. The sealing element has a third protrusion extending toward the center axis. The alignment element is made of a first material with less elasticity than a second material of which the sealing element is made.

Abstract: A shaft seal that is preferably a radial shaft seal has a sealing element of polyfluorocarbon that is provided with a sealing lip. The sealing element contacts a surface to be sealed under a radial force action acting in a radial direction of the shaft seal. An elastomer element is provided that is acting on the sealing lip and loads the sealing lip in a direction toward the surface to be sealed. The elastomer element supports the sealing element. The sealing element is resting flat on a face of the elastomer element, wherein the face is facing away from a medium side of the shaft seal.

Abstract: A bearing housing (12) for a turbocharger (10) includes a split (60) defining a first bearing housing segment (62) and a second bearing housing segment (64). At least one channel (74, 84) for transporting fluid within the bearing housing (12) crosses the split (60) such that the channel (74, 84) extends within the first bearing housing segment (62) and the second bearing housing segment (64). A dowel (82, 92) having a hollow interior is inserted in the channel (74, 84) to align the first and second bearing housing segments (62, 64) and allows fluid to flow through the channel (74, 84).

Abstract: An annularly shaped modular debris barrier can be mounted to an internal or an external member that are spaced apart to define an annular gap that could collect debris. The modules rotationally lock. Modules have circumferential segments that can be initially spaced apart to promote flexing that can occur when there is relative axial movement between the structures that define the annular gap. The gaps between segments are circumferentially offset as between adjacent segments to create a labyrinth through which the fluid can move in opposed direction while at the same time causing the debris to be retained. The segments stay in a flexed condition to exert a contract stress on the free ends thereof that touch the adjacent structure.

Abstract: A valve assembly includes a valve body defining a flow passage and a body cavity perpendicular to the flow passage. A bonnet is secured to the valve body. A valve member is moveable between an open position and a closed position, the valve member blocking the flow passage in the closed position, and allowing flow through the flow passage in the open position. A valve stem is coupled to the valve member. A debris barrier circumscribes the valve stem. The debris barrier comprises a first disk shaped member with a central opening through which the valve stem is inserted, and notches that extend radially from the central opening to define petals with ends that abut the valve stem.

Abstract: A vacuum seal arrangement comprising a one-piece elastomeric gasket having at least first and second O-rings interconnected by a planar web, a first part having a first planar sealing surface with a dove-tail groove therein holding the first O-ring and a square walled groove therein holding the second O-ring, the first part further including at least one passage in the first planar sealing surface surrounded by the first O-ring or second O-ring.

Abstract: A seal assembly (1) described comprises an elastomeric component (10) having a sealing surface (25) for providing a sealing function, and an energizing band (30), the elastomeric component (10) including an aperture for the energizing band, wherein the energizing band is adapted to fit in the aperture of the elastomeric component (10). In use, an outer surface of the energizing band applies a force to the elastomeric component (10), to deform the (10) elastomeric component to form a seal at the sealing surface. The energizing band (30) component includes non-metallic material.

Abstract: A fluid rotary passage is provided for sealing a fluid pressure chamber between a rotatable shaft and a shaft seat. The fluid rotary passage includes a sealing ring carrier and a fitting body, rotationally fixed or in contact with one of the shaft and the shaft seat in a fluid-tight manner and radially spaced from each other to create the chamber between them. Two sealing rings are provided axially spaced from each other and each sealingly applied with one contact surface against the carrier and one against the fitting body, for sealing the chamber against the outside. The carrier and the fitting body together form two axially spaced receiving grooves for the sealing rings, which are open toward the chamber and have at least one holding protrusion at least partially securing the sealing ring disposed in the respective receiving groove against a radial dislocation from the groove toward the chamber.

Abstract: A bearing device (100) for screw conveyor shafts (200) comprises at least one shaft bearing unit (20) and a connecting shaft (50), guided in the shaft hearing unit (20), for connecting one or more screw conveyor shafts. The bearing device includes a stationary external housing (11) in which at least one shaft bearing unit (20) is arranged in a pivotable manner. At least one elastomeric ring element (13) is arranged between an inner surface of the external housing (11) and a lateral external surface of the shaft bearing unit (20).

Abstract: Methods of forming ceramic matrix composite structures include joining at least two lamina together to form a flexible ceramic matrix composite structure. Ceramic matrix composite structures include at least one region of reduced inter-laminar bonding at a selected location between lamina thereof. Thermal protection systems include at least one seal comprising a ceramic matrix composite material and have at least one region of reduced inter-laminar bonding at a selected location between lamina used to form the seal. Methods of forming thermal protection systems include providing one or more such seals between adjacent panels of a thermal protection system.

Abstract: The present invention relates to a system comprising: a shaft having a distal end and a proximal end; a casing defining a housing in which a hydraulic device is rotatably mounted on the shaft; and a sealing element comprising a low pressure dynamic sealing means and a reinforced dynamic sealing means formed by a static seal tightly mounted on a friction pad, such as to isolate the dynamic sealing means from the rotating hydraulic device, said sealing element defining a discharge chamber between the dynamic sealing means and the reinforced dynamic sealing means, which discharge chamber is connected to a drain via a pipe arranged on the surface of the shaft, between the hydraulic device and the shaft, so as to discharge the fluid located in the discharge chamber, such that said discharge chamber is not subjected to the pressure in the casing of the hydraulic device.

Abstract: A sealing unit longitudinally comprises first and second sealing sub-units disposed around first and second portions of a driveshaft of a marine propulsion system of a watercraft. The first sealing sub-unit is sealingly connected to a front wall of the hull and the engine casing. The second sealing sub-unit is sealingly connected to the driveshaft and a crankshaft. The second sealing sub-unit is disposed at least partially inside the first sealing sub-unit. An inside of the first sealing sub-unit is in fluid communication with a water intake ramp. An inside of the second sealing sub-unit is in fluid communication with an interior of an engine. The first sealing sub-unit prevents fluid communication between the water intake ramp and a portion of an inside of the hull. The second sealing sub-unit prevents fluid communication between the engine, the inside of the hull, and the water intake ramp.

Abstract: An illustrative embodiment of a multi-shaft seal assembly generally includes a first seal, a second seal, and a collar. In the illustrative embodiment the collar may be integrally formed with a portion of the first seal, and may serve to axially space the second seal from the first seal. The second seal may be formed with a cutaway therein to ensure proper clearance between the second seal and one of the shafts. Other embodiments of the multi-shaft seal assembly use a collar formed with the equipment housing or second seal. Still other embodiments include additional seals for additional shafts.

Abstract: The present application provides a sealing assembly for use between a first component and a second component of a rotary machine. The sealing assembly may include a first sealing segment having a first end with a first angled surface and a second sealing segment having a second end with a second angled surface. The first angled surface of the first end of the first sealing segment meets the second angled surface of the second end of the second sealing segment at a joint.

Abstract: A windmill having a hub sealing apparatus for sealing an interface between a hub and a blade of the windmill, The hub sealing apparatus includes a bottom sealing ring configured to be sealed to the hub, a top sealing ring configured to be rotatably sealed to the blade, and a middle sealing ring configured to be sealed to the top sealing ring and the bottom sealing ring, so as to connect the top and bottom sealing rings.

Abstract: A maintenance and emergency run secondary seal mountable to a rotatable shaft is described. The seal includes a housing; a sealing ring having a double-tapered receiving channel located between two exterior surfaces and an interior wear surface; a lantern ring having a double-tapered profile for enabling engagement within the receiving channel of the sealing ring to form an air chamber between the sealing ring and the lantern ring; and an arrangement for directing and controlling pressurized air to the air chamber. The operating positions for the sealing ring are: where the sealing ring is spaced from the shaft, where a portion of the interior wear surface of the sealing ring is closed-in on the shaft to enable an emergency run secondary seal to permit shaft rotation and where the sealing ring is in full contact with the shaft to enable a static seal.

Abstract: A sealing device for sealing a slide plate in a polymer filtration apparatus where the slide plate is translatable across an extrusion bore extending through a housing of the polymer filtration apparatus. A spring device can be positioned around the outer periphery surfaces of the seal for axially biasing the sealing surface of the seal against the slide plate with a preload bias. Increasing pressure of polymer in the extrusion bore can enter a region in the seal cavity upstream of the thrust surface of the seal and can provide polymer pressure in the axial direction for exerting axial force against the thrust surface of the seal for causing the sealing surface to be further biased against the slide plate.

Abstract: To avoid interference of a side lip when plural sealing devices are piled up, a sealing device installed on one member of two members rotating relatively is constructed by combining a mounting ring fitted on the one member and a rubber-like elastic body attached on the mounting ring, and has a side lip formed by the elastic body, the mounting ring has a cylinder portion at a position fitted on the peripheral surface of the one member, the elastic body has a rubber step part provided at axially one side of the cylinder portion, the cylinder portion and the rubber step part have a positional relationship that the former of an upper sealing device is placed on the latter of the one sealing device when piled up, and the side lip of the one sealing device is dimensioned not to interfere with the upper sealing device even when they are in such a positional relationship.

Abstract: A tool holder plate (51) is fixed to a shaft end part (413) of a hollow motor shaft (41) of a brushless DC servo motor (1), and a cutting tool is mounted in a tool mounting hole (51a) formed in the tool holder plate (51) and a work is cut-processed by this cutting tool. In order to prevent intrusion of a cutting processing oil containing cutting powder into the inside of the motor from between the shaft end part (411) of the hollow motor shaft (41) and an end plate portion (22) of a motor housing (2), a labyrinth seal (55) including a double circular groove (553, 555) having a fine width extended in the axis direction (1a) is formed between a metal plate (53), the tool holder plate (51), and the shaft end part (411). The other shaft end part (414) is also formed with a labyrinth seal (56) of the same structure.

Abstract: A process chamber 10 comprising a container (12), a lid (14), and a sealed interface (16) therebetween. The container's interface surface (30) and/or the lid's interface surface (32) includes at least one groove (36) in which a seal (40) is situated. The seal (40) comprises an elastomeric element (50) and a metallic element (60). The elastomeric element (50) and the metallic element (60) can be arranged and adapted to seal the chamber's interface (16) sequentially during its conversion to a sealed condition. And/or the elastomeric element (50) and the metallic element (60) can be arranged and adapted to seal the chamber's interface in series once the lid (14) is in its sealed condition.

Abstract: A sealing assembly (100) for providing a seal between a first element (104) and a second element (106), the first element being movable with respect to the second element, wherein the sealing assembly comprises: a sealing member (102) adjacent to the first and second elements; a first seal portion (108) for providing a first seal between the sealing member and the first element, the first seal portion being arranged in a first direction; and a second seal portion (112) for providing a second seal between the sealing member and the second element, the second seal portion being arranged in a second direction, wherein the first direction is arranged at an angle with respect to the second direction and the sealing member is disposed such that the sealing member is movable relative to the second element in the second direction.

Abstract: A sealing device for a rotary feedthrough for receiving a rotating machine element whose outer side can be applied to another machine element includes at least two sealing elements disposed in tandem in the axial direction of the machine element. Inner sides of the sealing elements are configured for forming an active sealing connection with the rotating machine element. At least one of the sealing elements can be pressurized with an additional force acting in the radial direction so that the force of compression acting on the rotating machine element for the at least one of the sealing elements can be adjusted relative to the force of compression acting on the rotating machine element due to at least one other sealing element.

Abstract: The invention relates to a seal with non-contact adjacent deflector rings, arranged concentrically to each other, about a common rotation axis, whereby, on a first deflector ring of the deflector rings, at least two axially-adjacent radial lips are embodied an said radial lips are embodied such as not to come into contact with a second deflector ring of the deflector rings and an annular hollow cavity is embodied between two axially-adjacent radial lips and the second deflector ring.

Abstract: The seal devices on both ends of the rotary shaft are supported by the casing, the bearing on one end of the rotary shaft is supported by a bearing pedestal which is separated of the casing, the bearing on the other end of the rotary shaft is supported by the casing, the seal ring of the seal device on one end of the rotary shaft is divided into circumferential segments, and the seal ring of the seal device on the other end of the shaft is a unified seal ring.

Abstract: A sealing member can include a radially-working lip which contacts a drive shaft in a radial direction to seal a gap between the drive shaft and the housing in the radial direction, an axially-working lip extending in an axial direction, and a contact member which contacts the axially-working lip to seal the gap between the drive shaft and the housing in the axial direction. The contact member can be fitted to the drive shaft to rotate with the drive shaft.

Abstract: A rotary machine includes a machine rotor, a bearing coupled to the machine rotor, a machine stator, and a sealing device disposed between the machine rotor and the machine stator. The sealing device includes a dry gas seal and first and second seals disposed between the dry gas seal and the bearing. One or both of the first and second seals includes a brush seal or more specifically a brush seal including a plurality of non-metallic fibers.

Abstract: A gas seal for providing a seal between a pair of relatively rotatable components is provided with a stand-still seal which will seal between the components when the components are stationary, the stand-still seal having a sealing element mounted in sealing relationship with respect to one of said components and being displaceable into sealing engagement with the other component when the components are stationary with respect to one another.

Abstract: A seal assembly for a shaft has a flange fixed to a work piece having a bore hole therein. The flange encircles the shaft and includes a triangular shaped projecting member having first and second surfaces extending from the flange into the bore hole. An angle is formed between the first and second surface. The first surface of the projecting member is in contact with an inner surface of the bore hole or the outer surface of the shaft. An o-ring encircles the shaft and a backup ring is positioned within a space between the shaft, the flange and the o-ring or between the bore hole, the flange and the o-ring. Subject to axial forces, the backup ring undergoes a wedging action between the shaft and the triangular shaped projecting member or between the bore hole and the triangular member to seal where the shaft penetrates the work piece.

Abstract: The invention relates to a sealing device for cylinder bearings. An annular projection which is connected to the cylinder neck (2) in a rotationally fixed manner carries an annular sealing surface which interacts with an elastic, stationary sealing element (23, 24), a sealing labyrinth consisting of stationary parts and parts which are connected to the cylinder (1) being placed upstream from the sealing element (13) towards the cylinder barrel. The aim of the invention is to develop one such sealing device in such a way that good sealing action can be achieved using simple and cost-effective sealing elements, and the durability of the seal increased in relation to that created by known sealing devices in such a way that the entire sealing device is cheaper.

Abstract: A circumferential film-riding seal operative in a gaseous or liquid environment about a rotating shaft is provided so that it is able to function with extended lifetime, low leakage, and a high-pressure difference thereacross. These characteristics are achieved by the employment of a segmented seal ring mounted in tandem with a floating load ring surrounding the rotating shaft. The seal ring has a bore surface thereon confronting the shaft, and the bore surface has a circumferential lift region located downstream of a circumferential bearing region. The bearing region has additional lift grooves either in the seal ring or in the shaft surface confronting the bearing region, together with feed grooves connecting the additional lift grooves, respectively, to a higher-pressure region adjacent the shaft.

Abstract: A seal assembly seal assembly includes an outer member, an inner member, and a resilient member therebetwen. The resilient member is located between an inner diameter of the outer member and an outer diameter of the inner member. The resilient member includes substantially V-shaped or opposed parabolic members in cross-section which define a cavity therebetween. The cavity formed between the parabolic members is filled with the hydrophobic material to provide a barrier to undesirable moisture, lubricate the interface between the parabolic members and the outer diameter of the inner member, and further minimize ingestion of contaminants.

Abstract: A seal is provided at the intersegments of hydrogen seal rings for preventing oil leakage through this potential gap between the seal ring segments. By minimizing leakage through the gaps between the open rings, hydrogen consumption in hydrogen-cooled generators due to leakage oil is reduced. In a preferred embodiment, the seal is provided by a brush seal secured to one of the seal ring segments and received in a slot defined in the other of the seal ring segments.

Abstract: A lip type seal (3A) has an annular casing (31), a plurality of seal lips (32, 34) and a rear surface support ring (35) arranged at the rear side. The casing (31) is installed to an inner circumferential surface of a seal installation part (1a) of a shaft hole housing (1) of an equipment through a main gasket (36) made of rubber state elastic material. An inner circumferential part of the seal lips (32, 34) is closely contacted with an outer circumferential surface of a rotary shaft (2). A sub-gasket (41) made of a material having a CO2 transmission coefficient being smaller than that of rubber material is interposed between the rear surface support ring (35) and the shaft hole housing (1).

Abstract: A seal is provided at the intersegments of hydrogen seal rings for preventing oil leakage through this potential gap between the seal ring segments. By minimizing leakage through the gaps between the open rings, hydrogen consumption in hydrogen-cooled generators due to leakage oil is reduced. In a preferred embodiment, the seal is provided by a brush seal secured to one of the seal ring segments and received in a slot defined in the other of the seal ring segments.

Abstract: A seal assembly is adapted for mounting between a rotatable shaft and an outer stationary housing, the seal assembly being made up of a metal sleeve in surrounding relation to the shaft, a non-metallic resilient seat in surrounding relation to the sleeve, the seat being heat-expandable to permit placement over the sleeve and, upon cooling, will contract or shrink into snug-fitting engagement with the sleeve along selected areas with labyrinth grooves formed along the inner surface of the seat between the selected areas of sealed engagement; and an excluder ring is mounted on one end of the seat along with an annular drive lock which is wedged into one end of the sleeve so as to impart rotation of the shaft into the sleeve and excluder ring.

Abstract: A sealing assembly with a first molded graphite ring of generally triangular cross section, one side of which is in use perpendicular to the longitudinal axis of a rotatable and/or slidable shaft, the surface of which is to be sealed in an axial direction against fluid leakage therealong, and a second side which is in use disposed parallel to said shaft to engage the inner wall of the housing surrounding said shaft.

Abstract: A rack seal for use with a rack bushing and seal retainer wherein the rack bushing is made of a thermoplastic material and includes a face with a plurality of cooling cavities. The rack seal includes a body member, an annular sealing face, and a retainer air side which is in constant contact with the thermoplastic bushing cavity face. The rack seal air side surface includes a bead segment. The bead segment has a predetermined height which creates a minimum contact at a full gap with the rack bushing and is compressible to a minimum gap with the rack bushing. The bead segment of the rack seal is in constant contact with the thermoplastic bushing such that any objectionable noises are eliminated during any separation of the rack seal and the thermoplastic bushing.

Abstract: In order to insert a replacement toner dam in an assembled toner cartridge, the opposing sides of the toner cartridge are caused to move towards each other so as to deform the cartridge and cause openings to appear at opposing ends thereof. A pair of web spring carriers are inserted into and through the openings so they exit from one opening. A new toner dam is inserted between web spring carriers at the portion thereof that exits from the opening. The web spring carriers are then withdrawn until the replacement toner dam is in a proper position. The dam is then held in position and the web spring carriers are freely withdrawn. This method thereby enables replacement of the toner dam without injury to seals at either end of the toner cartridge. Various non-adhesive bearing toner dam structures are shown, each of which has a flexible portion that engages a toner bottle flange and thereby enables a toner seal to be achieved without use of adhesive.