Abstract: A spherical plain bearing includes an outer ring and an inner ring that are each coaxial with a longitudinal axis of the bearing. The outer ring has a first axial outer ring end, a second axial outer ring end, and an interior spherical concave bearing surface extending therebetween. The inner ring has a first axial inner ring end, a second axial inner ring end, and an interior cylindrical bearing surface defining a bore and an exterior spherical convex bearing surface extending therebetween. The exterior spherical convex bearing surface is in interfacial sliding engagement with the interior spherical concave bearing surface. A plurality of circumferential lubrication grooves and one or more curved lubrication channels are in the exterior spherical convex bearing surface. The curved lubrication channels are positioned to intersect each of the circumferential lubrication grooves. A plurality of profiled annular lubrication grooves circumferentially extend into the interior cylindrical bearing surface.

Abstract: A constant velocity joint assembly includes a housing body having an outer surface and an inner surface extending between a first housing end and a second housing end along a central axis. The inner surface of the housing body defines a raceway. A plurality of rollers are disposed in the raceway. A flexible boot is operably fixed to the housing body, with the flexible boot extending along the central axis. A deflector ring is fixed to the outer surface of the housing body. The deflector ring has a metal inner ring portion and a non-metal outer ring portion.

Abstract: A linear compressor includes a hole that is defined in a discharge cover, and is configured such that a portion of a refrigerant discharged through an opened discharge valve is guided to flow to the hole. Accordingly, a discharge passage for the refrigerant used as a gas bearing may be easily defined.

Abstract: Actuator of a nuclear reactor control and protection system comprises: a linear step motor comprising an armature; a rod being coaxial with and connected to the armature to enable joint vertical movement and rotation about a common vertical axis, which rod can form an L-shaped bayonet connection with a working member; and a lock to prevent spontaneous rotation of the rod. The lock comprises a guiding inside the armature and provided with a flange and longitudinal through slot; a cross-member connected to the armature, mounted in the slot and capable of vertical movement therein; a fixed ring, on which the inner surface of the flange rests; and a vertical pin. Through slots are arranged equidistantly in the outside rim of the flange, the vertical pin being mounted in one of several openings arranged equidistantly about the circumference of the fixed ring to pass through one of the through slots.

Abstract: An apparatus for mounting an O-ring to a work piece, including: a plurality of picking components operable to move away from each other to contact and expand the O-ring to pick the O-ring or to move towards each other to release the O-ring; and a guiding component including a frustum portion arranged coaxially with a groove of the work piece, a large end face of the frustum portion arranged adjacent to an end surface of the work piece on which the groove is formed, wherein a diameter of the large end face is substantially same as an inner diameter of the groove, wherein the picking components are operable to release the O-ring onto a tapered surface of the frustum portion so that the O-ring is pushed into the groove along the tapered surface.

Abstract: A fluorosilicone rubber composition is provided comprising (A) a fluorosilicone gum having an aliphatic unsaturated monovalent hydrocarbon group content of 0.03-1 mol % based on the total of monovalent hydrocarbon groups and a residual alkali metal content of up to 20 ppm, (B) reinforcing silica having a specific surface area of 50-100 m2/g, and (C) an organic peroxide catalyst. The composition is molded into silicone rubber parts which are improved in compression set even after immersion in ?-caprolactam.

Abstract: Apparatus for controlling a pressurized fluid. In accordance with some embodiments, a valve assembly includes a piston moved between closed and open positions. A sealing member is disposed within an annular recess of the piston and characterized as an endless annular ring extending about a central axis of the piston. The sealing member has an elongated circle cross-sectional shape when the sealing member is in an uncompressed state prior to installation in said recess. The cross-sectional shape is defined by parallel top and bottom surfaces having a length L in a direction perpendicular to and intersecting the central axis, and having opposing inner and outer surfaces of a radius R, the inner and outer surfaces respectively facing toward and facing away from the central axis, and wherein the dimensional value of L is at least five times greater than the dimensional value of R.

Abstract: An adapter is provided for fastening a filter element in a cylindrical receiving opening of a bottom part of a lower piece of a filter housing. The adapter has at least one seal arranged in a peripheral groove on the circumference of the adapter to permit fluid-tight separation of a non-filtrate chamber, which surrounds the external jacket of the filter and from which medium to be filtered can be delivered to the filter, from a filtrate chamber into which the filtrate can be introduced from the filter. The seal is connected by injection molding to a base surface of the peripheral groove and is at a distance from at least one side wall delimiting the base surface of the groove.

Abstract: A housing structure includes an upper housing, a lower housing, a first waterproof member and a second waterproof member. The upper housing has a first connecting portion, and the lower housing has a second connecting portion. The upper housing and the lower housing are connected to each other by the first connecting portion and the second connecting portion. The first waterproof member is disposed between the first connecting portion and the second connecting portion. The second waterproof member is disposed between the first connecting portion and the second connecting portion. Wherein, a distance is formed between the first waterproof member and the second waterproof member.

Abstract: A compressed gas cartridge is pierced and dispenses its pressurized gas through a permeation element that serves as a way to regulate the rate of gas dispensed out an outlet in the surrounding housing. It has been found that the use of a permeation element can control the rate of dispensation to an almost constant rate over time, which is valuable in applications such as art preservation for just one example.

Abstract: The interturbine duct (ITD) directs hot combustion gases from a high pressure turbine stage outlet to a low pressure turbine stage inlet in a gas turbine engine. The ITD comprises an outer wall and a heat resistant non-metallic resilient annular seal provided around an end of the outer wall that is adjacent to the high pressure turbine stage outlet.

Abstract: The invention relates to the field of portable compressed gas cartridge dispensers comprising the ability to predictably permeate the pressurized gas contained within a compressed gas cartridge. An object of the invention is to predict leak rate thus dispensing life and to provide a substantially constant leak rate for the cartridge usable life until the compressed gas cartridge is substantially spent. Another object of the invention is to harness the permeated gas for various applications.

Abstract: A sealing system for sealing a component (102) within an electronic device (100) is provided. The system includes one or more apertures (206) within an internal housing (202). Further the system includes an adhesive (602), adhered on a first surface to a ledge (502) and bottom perimeter surface 402 of the component. Furthermore, the system includes an external housing (204). The external housing presses the perimeter of the component onto the ledge.

Abstract: A bonnet assembly for a blowout preventer uses a seal carrier that is removable so as to allow for efficient and easy seal replacement. The seal carrier has: a recess adapted to at least partially embed a seal for sealing the bonnet assembly to a body of the blowout preventer; and a first connecting rod coupled to and extending from an inner surface of the seal carrier, where the first connecting rod has a fastening structure proximal to a distal end of the first connecting rod, where the fastening structure is adapted to engage with a first fastening device, and where the seal carrier is removable from the bonnet assembly when the first fastening device is disengaged from the fastening structure.

Abstract: A clutch assembly includes a clutch, a clutch housing containing the clutch, and a clutch cover attached to the clutch housing, wherein first screw threads are formed on an outer side of the clutch cover, second screw threads corresponding to the first screw threads are formed on an inner side of the clutch housing, and the clutch cover is attached to the clutch housing by threading the first screw threads with the second screw threads.

Abstract: A pump, preferably a vane cell pump for supplying a transmission with oil, includes a pump housing and a rotating group which is disposed inside the pump housing. The rotating group includes a side plate that may be mounted inside the pump housing in such a manner as to produce, at least temporarily, an axial gap between the side plate and the pump housing. A shaft is mounted inside the pump housing and a radial packing ring is located in a recess around the shaft. The packing ring seals off the rotating group towards the exterior radially on the pump housing and radially on the shaft using a sealing lip.

Abstract: An O-ring used in a clamp-type joint for a vacuum apparatus, which engages with a concave groove in the outer circumference edge of the center ring and is sandwiched by an outer ring having a U-shaped outer circumference, wherein the radius of the circular arc in the cross-section on the side coming into contact with the outer ring is smaller than the radius of the circular arc in the cross-section on the axial side of the joint. A clamp-type joint for the vacuum apparatus which can exhibit stable sealing performance at a high temperature of 200° C. or more without cracking of the O-ring, as well as an outer ring and O-ring used with the clamp-type joint are also provided.

Abstract: An inlet assembly for introducing a sample into a carrier gas stream for gas chromatography is disclosed including a housing having a bore that receives a liner. A sealing member having a core with a surface layer is positioned within the bore in sealing engagement with the bore and the liner. The surface layer of the sealing member has a lower adhesion to the housing than the core. The surface layer facilitates removal of the sealing member and the liner from the bore. A method of replacing an existing liner in an inlet assembly for chromatography is also disclosed. The method includes providing a liner with a sealing member having a core with a surface layer having a lower adhesion to the housing than the core, removing the existing liner from the bore and inserting a new liner with a new sealing member into the bore.

Abstract: A laminated low-permeability elastic ring (40) comprising an outer layer (40A) of a low permeability material that possesses impermeability to automotive fuel, and an inner core part (40B) of a low temperature-resistant material with excellent low temperature performance in order to maintain high elastic strength at low temperatures for the low permeability material layer.

Abstract: A gasket is provided that includes a first sealing portion defining an angled profile and a second sealing portion. A plurality of beads are disposed along the angled profile of the first sealing portion, and a plurality of ribs are disposed along the second sealing portion, thus providing a dual action sealing gasket. The gasket is preferably employed in an electrical housing assembly for a power controller system, wherein the housing assembly comprises a case having an open end, a cover for closing the open end of the case, and a mounting collar disposed around the case for mounting the case to a panel. The gasket is secured to the case proximate the open end such that when the cover is mounted to the open end of the case, the plurality of beads are elastically deformed by the cover and the plurality of ribs are compressed against the panel.

Abstract: A housing assembly is provided that has a case including an open end and a flange extending around at least a portion of the open end. The flange defines at least one reduced area extending into a portion of the flange, and a gasket is disposed around the flange. Preferably, the gasket includes a first sealing portion, a second sealing portion, an internal groove for receiving the flange, and at least one member extending into the internal groove and into the at least one reduced area of the flange. In one form, the reduced area is an aperture, and the member of the gasket is a support that extends all the way through the flanges, thereby providing a secure engagement between the gasket and the case during operation. Methods of manufacturing the housing assembly are also provided.

Abstract: Embodiments of the invention generally provide a slit valve door seal. In one embodiment, a slit valve door seal includes a ring-shaped base having a center axis and at least one finger extending from the base. The finger is oriented substantially parallel to the center axis, wherein the base and the finger define a single, one-piece seal member. The seal is particularly suitable for using in sealing substrate access passages formed in load lock chambers.

Abstract: A self-retaining O-ring having at least two radial struts connectively extending from inside surfaces to a central sphere-shaped retainer. The top surfaces of the radial struts are formed below the top surfaces of the O-ring. The central sphere-shaped retainer is connectively formed to the radial struts and extending below the bottom surfaces of the struts. A circular recess is provided for containing and supporting the O-ring, its inside surface is dovetailed. The circular recess has a spherical hole disposed on its center for insertion of the sphere-shaped retainer.

Abstract: The invention relates to a sealing device which is provided with an annular circumferential groove in a preceding sealing washer and having a sealing body disposed in the groove. The width and depth of the groove are larger than the cross-section of the sealing body so that the sealing body can be axially moved in the groove and may be forced against the wall of the groove and the tool shank by inner pressure provided, for example, by a coolant.

Abstract: A gasket singulation apparatus for separating one gasket from a web-connected stack of gaskets includes a mandrel for receiving the web-connected stack and an arrangement of cylinders which are used to support the web-connected stack of gaskets and to pull one gasket away from the remainder of the web-connected stack so as to singulate that one gasket. A first plurality of cylinders are used to support the web-connected stack. A second plurality of cylinders are used to pierce any connecting material between the gasket to be singulated and the remainder of the stack. Once the web material is pierced, cylinder movement is effected so as to pull the selected gasket away from the stack, allowing any connecting material to sever and thereby singulate one gasket from the stack. Once the gasket is singulated, various insertion mechanisms are disclosed for inserting the singulated gasket into a pail lid groove.

Abstract: Very low moisture o-rings are prepared by placing standard o-rings under vacuum in an inert atmosphere for a period of time sufficient to achieve a desired outgassing rate. Heat is not applied. While the o-rings are under vacuum, moisture is removed from the o-rings via diffusion transport.

Abstract: A weather resistant latch handle assembly including a pan having sidewalls with an opening from an interior side of the pan to an exterior side of the pan, a pan floor, and a recessed area defined by the sidewalls and the floor. Bushings are carried in the openings having an inner surface for receiving an actuator which extends from the exterior side of the pan to the interior side, and an outer surface for engaging the sidewall. A first annular groove is included in the inner surface of the bushing carrying a first o-ring for forming a seal between the inner surface of the bushing and the actuator. A second annular groove is included in the outer surface of the bushing carrying a second o-ring for forming a seal between the bushing and sidewall.

Abstract: A sealing apparatus includes a sealing arrangement and a groove in a base. The sealing arrangement may comprise an o-ring and a grounding gasket where both the o-ring and the grounding gasket partially protrude in a longitudinal direction from the groove. Thus, the grounding gasket, which is equipped with ends that can be pulled out of the groove, can be removed from the groove by a pulling force. This leaves the o-ring accessible for removal or maintenance at a much lower cost in terms of manufacturing and operational costs. The sealing arrangement may also include inner and outer o-rings which seal a fluid flow from the atmosphere.

Abstract: A gasket for use with sanitary piping systems contains a receptacle for retaining an encapsulated bacterial test indicator. The receptacle has a length that permits the indicator end of the test indicator to be directly exposed to the sterilizing steam that is introduced into the piping system. The gasket is preferably installed at the sanitary flange of a short “bull” T-section of the stainless steel sanitary piping and secured thereto by a stainless steel cap. The stainless steel cap is recessed to accommodate as much of the test indicator length as may be required to position the indicator end of the test indicator in the central lumen of smaller pipe diameters.

Abstract: A housing assembly and method for use on sanitary mixers and similar equipment that includes a cover sealed by sealing elements and supported by supporting elements. The cover covers at least a part of a drive component of the mixer such as a speed reducer.

Abstract: A gasket singulation apparatus for separating one gasket from a web-connected stack of gaskets includes a mandrel for receiving the web-connected stack and an arrangement of cylinders which are used to support the web-connected stack of gaskets and to pull one gasket away from the remainder of the web-connected stack so as to singulate that one gasket. A first plurality of cylinders are used to support the web-connected stack. A second plurality of cylinders are used to pierce any connecting material between the gasket to be singulated and the remainder of the stack. Once the web material is pierced, cylinder movement is effected so as to pull the selected gasket away from the stack, allowing any connecting material to sever and thereby singulate one gasket from the stack. Once the gasket is singulated, various insertion mechanisms are disclosed for inserting the singulated gasket into a pail lid groove.

Abstract: O-ring seals for rock bit bearings comprise a body formed from an elastomeric material having a lubricant additive in at least the dynamic seal surface to reduce the coefficient of friction and stick-slip amplitude at O-ring seal surfaces. The lubricant additive comprises polarized graphite. O-ring seals made from elastomeric compositions comprise in the range of from about 50 to 99 percent by volume elastomeric material, and in the range of from about 1 to 50 percent by volume of the polarized graphite based on the total volume of the composition. Preferably, the polarized graphite is in the range of from 7 to 25 percent by volume. As the O-ring seal experiences wear from adjacent metal surfaces, flakes of polarized graphite are released from the O-ring seal and adhere to the adjacent metal surfaces and form a lubricating film.

Abstract: An O-ring is made of elastomeric material. It lies in a plane. The O-ring has a circular radial axial section. The O-ring is provided with a concentric slot that extends perpendicular to the plane from a surface of the ring to a point past the center of the circular axial section. The O-ring conforms to confined spaces by bending and closing the slot.

Abstract: Disclosed herein is a novel drain plug that comprises a body portion, and a recess defined in said body portion. Disposed within the recess is a sealing gasket made of an expandable material.

Abstract: An apparatus for providing a secondary seal on mixers and similar rotating equipment that includes a stop assembly and a collar which cooperate to minimize translational movement of a mixer shaft during shutoff and to form a reversible seal between the vessel and the shaft. The apparatus provides a sealing engagement between the mixing vessel and the rotatable shaft of a mixer offering improved safety during mechanical seal replacement.

Abstract: An apparatus for providing a secondary seal on mixers and other rotating equipment that includes a stop assembly and a collar which cooperate to minimize translational movement of a mixer shaft during shutoff and to form a reversible seal between the vessel and the shaft. The apparatus provides a sealing engagement between the mixing vessel and the rotatable shaft of a mixer offering improved safety during mechanical seal replacement.

Abstract: High-pressure static seals and pressure vessels with static seals for containing fluid at high pressures are shown and described. Embodiments of the invention allow a plug to be easily, manually inserted into and removed from the pressure vessel. A metallic ring in the seal is configured to expand under pressure to prevent an O-ring in the seal from being extruded into a gap between the plug and the vessel wall, but not to expand so much as to cause galling or similar damage when the seal moves with respect to the wall under elevated pressure.

Abstract: Motorized reduction gear intended for functional equipment of motor vehicles, such as window lifters, sunroofs or seats, comprising a rotor provided with a rotor shaft bearing a commutator and passing through a rolling bearing housed in a support of a reduction gearbox in which the said shaft is placed, and a worm of the shaft engaging with a gearwheel housed in the reduction gearbox. A seal is inserted between the bearing and the bearing support, on the side of the bearing close to the inside of the reduction gearbox. An annular housing, the profile of which is adapted to receive the seal resting on a spherical surface of the bearing, is arranged in the wall of the bearing support. The presence of the seal prevents any leak of lubricant out of the gearbox thus ensuring a better longevity of the brushes of the commutator.

Abstract: A seal assembly for a toolholder with a collet clamping member having a forcing ring in which at least in part the clamping member can be positioned, and a seal ring with a tool insertion opening including a surrounding O-ring holder that can be removably engaged with the forcing ring to place this seal ring in a selected position therein. An O-ring is provided in the seal ring O-ring holder.

Abstract: A seal structure in an engine, including a seal member interposed between a cylinder head having a slanting face portion at least at an intermediate portion of its upper end face to which a valve-operating cam chamber opens, and a head cover coupled to the upper end face of the cylinder head by a bolt to close the valve-operating cam chamber. The head cover has a fit wall portion formed thereon and fitted to an inner peripheral surface of the valve-operating cam chamber, and the seal member is mounted in a seal groove provided in an outer peripheral surface of the fit wall portion to come into close contact with an inner peripheral surface of the cylinder head. Thus, an interference can be provided equally at various portions of the seal member irrespective of the number of bolts used, and the seal member can always exhibit a good seal function.

Abstract: In a quick connector for piping 10 for detachably connecting a male member 12 to a female member 11, an O-ring 15 is interposed between the female member 11 and the male member 12 so as to form a seal therebetween, and the O-ring 15 is subjected to a low-friction treatment so that the O-ring can be moved in a direction of an axis of the quick connector 10 by a pressure of an employed fluid.

Abstract: A leakage restriction device for a refrigeration cycle of a vehicle air conditioner in which refrigerant flows has first and second rubber gaskets. The first and second gaskets are disposed between a pipe and a pipe joint of the refrigeration cycle for restricting refrigerant from leaking into atmospheric air. The first gasket is disposed on an atmospheric-air side and the second gasket is disposed on a refrigerant side between the pipe and the pipe joint. The first gasket has a gas permeability lower than that of the second gasket, and has a blistering-resistance which is inferior to that of the second gasket. As a result, refrigerant is restricted from leaking into atmospheric air, and a blister is restricted from being formed in the first and second gaskets even when a pressure of refrigerant is rapidly changed.

Abstract: A jig used for assembling semiconductor devices has an arrangement wherein the first semiconductor integrated circuit chip, which is die-bonded and wire-bonded onto one surface of a lead frame, is fitted to the inner section of a support stage and is supported by an elastic member that is designed to be higher than the inner section, while the lead frame is supported by the outer section of the support stage. In this state, the second semiconductor integrated circuit chip is die-bonded onto the other surface of the lead frame by applying pressure by means of a bonding collet. Thus, it becomes possible to prevent cracks that may be caused in a passivation film and also to improve the reliability and the final yield of semiconductor devices.

Abstract: A fluid assembly is disclosed. The fluid assembly includes a first conduit having a generally annular first body and a first longitudinal channel extending therethrough and a second conduit having a generally annular second body disposed over a portion of the first conduit and having a second longitudinal channel in communication with the first longitudinal channel. The second conduit further includes a retainer fixture. The assembly also includes a seal assembly including an annular seal having first and second seal members, an o-ring disposed within the seal generally against the first and second members, and a retainer biasing the o-ring toward the first and second seal members. The seal assembly is disposed between the first fuel conduit and the second fuel conduit such that the first seal member engages the first conduit and the second seal member engages the second conduit. The retainer engages the retainer fixture, and the seal assembly releasably connects the first conduit and the second conduit.

Abstract: A metallic seal is provided that concentrates the available load over a narrow band to produce a sealing dam over a sufficient width to minimize leakage on a molecular level. The metallic seal has a first annular beam section, a second annular beam section, and inner and outer surfaces extending between the first and second annular beam sections. One of the inner and outer surfaces has an annular recess that at least partially defines an annular column section of material extending substantially perpendicular between said first and second annular beam sections thereto. The first annular beam section has a first non-sealing surface and a first raised portion with a first annular sealing surface facing in a first axial direction to contact a first member for creating a first annular sealing dam therebetween.

Abstract: A plug is provided for sealing a port of a downhole tool or other device. In one aspect, the plug includes a disk that has an upper surface, a lower surface and an annular groove in the lower surface. The annular groove has an inner wall and a outer wall. An annular seal member is positioned in the annular groove. An annular member is positioned in the annular groove between the annular seal member and the and the outer wall to retain the annular seal member in the annular groove. A member is provided that has least one external thread for engaging the at least one internal thread of the port whereby rotation of the member in a given direction moves the disk toward and compresses the annular seal member against the bottom surface. The plug provides excellent fluid sealing capability with a short axial dimension suitable for small O.D. and thin-walled tools.

Abstract: To a fluorosilicone rubber composition comprising an organopolysiloxane having trifluoropropyl groups, a microparticulate silica filler, and a curing agent, there is added a specific amount of a linear organopolysiloxane oil having trifluoropropylmethylsiloxy groups in its backbone and having no crosslinked points in its molecule. The composition cures into fluorosilicone rubber experiencing minimized swell upon immersion in fuel oil and having satisfactory mechanical strength.

Abstract: A method of sealing at least a first seal surface to a second seal surface comprises the steps of placing a flexible ring member between the first and second seal surfaces and juxtaposing the first and second seal surfaces. The flexible ring member is compressed between the first and second seal surfaces. Thereafter, the flexible ring member is expanded into at least one of a first recessed area in the first seal surface and a second recessed area in the second seal surface, with at least one of the first and second recessed areas having a plurality of spaced apart pressure points that contact the ring member. This method of sealing assures that when the O-ring (flexible ring) permanently sets over time, it takes the shape that makes the seal effective for a long time under high temperature, high pressure.

Abstract: A high pressure chamber opening is equipped with a cylindrical element that features a circumferential flange. The circumferential flange features concentrically positioned primary and secondary O-ring seals that surround the chamber opening. A door is clamped to the circumferential flange and over the opening and the circumferential seals. As a result, the opening is sealed and an annular passage is formed between the seals. A port is formed in the cylindrical element so that the annular passage may communicate with a pressure switch. The port also communicates with a relief valve. The pressure switch signals the system operator when the pressure in the annular passage rises due to failure of the primary O-ring. The relief valve vents the annular passage when the pressure therein increases to a level where damage to the secondary O-ring could occur. The relief valve setting is such that the pressure within the annular passage may rise to a level where dry ice formation is prevented.

Abstract: A metallic seal is provided that concentrates the available load over a narrow band to produce a sealing dam over a sufficient width to minimize leakage on a molecular level. The metallic seal has a first annular beam section, a second annular beam section, and inner and outer surfaces extending between the first and second annular beam sections. One of the inner and outer surfaces has an annular recess that at least partially defines an annular column section of material extending substantially perpendicular between said first and second annular beam sections thereto. The first annular beam section has a first non-sealing surface and a first raised portion with a first annular sealing surface facing in a first axial direction to contact a first member for creating a first annular sealing dam therebetween.