Abstract: A unitary sleeve lip seal can be used to provide permanently lubricated sealed bearings in severe service conditions such as the track pins of track-driven vehicles and agricultural equipment. The seal has a labyrinthine exclusion path and multiple dust lips contacting the sleeve in addition to the main sealing lip. A garter spring encircling the main sealing lip may enable the seal to operate at moderately elevated pressures. The sleeve has a radial flange at the outermost end. Elastomeric lips extend between the sleeve flange and a faceplate that terminates the outside end of the seal housing. The seal is packed with water-resistant grease and can, when installed in association with grease-packed bearings can create a permanently lubricated bearing/shaft assembly that requires no re-greasing. Resilient coatings both protect the sleeve and case and also improve leak resistance, especially when the seal is retrofitted onto shafts that have been damaged.

Abstract: In a weldless joint 13, screwing a fastening member 13 into a joint body allows two pipes to move closer to each other in an axial direction without rotating. The two pipes can be thus connected without welded. Packings and disposed in the joint body prevent the leakage of gas through the contact surfaces of the pipes and, further, the leakage of gas from the inside of the joint body to the outside thereof. Accordingly, no packing or sealing element is needed on the periphery of the fastening member.

Abstract: A sealing element for a hydraulic screw connection, comprising a hollow screw and an annular stub, for securing a rigid or flexible line connected or connectable to the annular stub and to a hydraulic component, wherein the annular stub is fixed in a pressure medium-tight fashion, via its plane end faces, between a head of the hollow screw and the component and swiveled into an arbitrary angular position relative to the component about the center line of the hollow screw. Two sealing element regions disposed in sealing seams located between the head of the hollow screw and the annular stub and between the component and the annular stub, are joined via a substantially cylindrical portion, and this cylindrical portion. This portion extends in the seam concentric with the largely cylindrical wall of the hollow screw. It has at least one radial opening.

Abstract: A common rail is provided in the pipe joint of the branch connector to improve the strength and resistance against the internal pressure fatigue; said common rail having a longitudinal conduit of a substantially circular section therein and a plurality of branch holes formed in its circumferential wall at an axial spacing, each of the branch holes having a pressure receiving seat formed on the circumferential face thereof and opened to the outside, wherein connected by means of branch connector having a conduit to communicate with the conduit of the common rail, a joint head formed at the end thereof and forming a pressure seat so that the branch pipe is engaged by bringing the pressure face thereof into abutment against the pressure receiving face, a joint portion made integral with or separate from the main pipe rail, and a nut assembled in advance in the branch pipe and fastened into the joint portion against the pressure of the joint head thereby.

Abstract: A metal sealing gasket includes first and second opposite, superposed metal cover plates; and an aperture provided in each cover plate. The apertures are in alignment with one another to define a thoroughgoing opening in the metal sealing gasket. Further, first and second projections are provided which form part of the first and second cover plates, respectively. The first and second projections extend into the opening and have overlapping portions which are in a contacting relationship with one another. The first and second projections are situated in their entirety within the opening and thus do not project outwardly beyond the outer surfaces of the cover plates.

Abstract: A sealing device designed to minimize accumulation of a fluid medium trapped therein to thereby increase a sealing performance and adapted to seal a space between inner and outer peripheral members rotatable relative to each other. The sealing device includes a generally L-sectioned annular sealing plate fitted to one of the inner and outer peripheral members and a generally L-sectioned annular sealing element fitted to the other of the inner and outer peripheral members so as to confront the sealing plate. The sealing plate has a radial wall and a tilted wall extending from the radial wall so as to incline inwardly thereof, and the sealing element includes a generally L-sectioned base plate provided with an elastic member. The elastic member has a side lip slidably engageable with the radial wall of the sealing plate and a radial lip slidingly engageable with a cylindrical sleeve of the sealing plate.

Abstract: A sanitary-pipe gasket includes an annular disk portion of predetermined thickness, and a projecting portion which is provided concentrically with the annular disk portion on each of the upper and lower surfaces of the annular disk portion. The annular disk portion and the projecting portion of the sanitary-pipe gasket are integrally formed of porous PTFE such that the density of the annular portion ranges from 1.0 to 1.9 g/cm.sup.3 and the density of the projecting portion ranges from 0.3 to 1.8 g/cm.sup.3. The gasket is produced by disposing a porous PTFE sheet of 0.3 to 1.4 g/cm.sup.3 density and 1 to 10 mm thickness in a mold, and applying pressure perpendicular to the sheet at room temperature or with heating.

Abstract: A flexible entry boot provides a fluid-tight fitting between a wall of a fluid containment region and a conduit passing through the wall. The flexible entry boot comprises a seal member disposed within the containment region; and a securing plate disposed within the containment region and releasably mounted to the seal member. A flexibly rigid, hollow support sleeve is attached to the seal member. The hollow support sleeve has a degree of flexibility sufficient to allow for the insertion of the conduit at angles equal to or other than an angle normal to the fluid containment wall while maintaining a fluid-tight environment. A mechanism is provided for releasably attaching the hollow support sleeve to the conduit.

Abstract: A method and apparatus for manufacturing a fluid coupling employs a rod having a bore at one end into which a plurality of plastic tubes may be inserted. The rod is sized to pass through a lumen of a Luer connector and an elastomeric washer placed within a surface of the Luer connector. The rod and plastic tubes are pulled through the Luer connector and washer. After removal of the rod and back tapping of the tubes flush with the end of the connector, a packing material is introduced into the remote end of the connector to fix the tubes in place. The washer then acts as a dam to prevent a flow of packing material from reaching the distal end of the connector. The apparatus employs tube locator blocks which are sandwiched around the rod for guiding the tubes into place in the end of the rod. A piston and cylinder arrangement is used to pull the rod downwardly through these blocks.

Abstract: A rotating split seal ring assembly comprises a seal ring having a split dividing the seal ring into at least two sections configured to fit a round a shaft, a clamp ring having a split dividing the clamp ring into at least two sections configured to circumferentially surround the seal ring, each clamp ring section having tabs which cooperate with corresponding tabs on another clamp ring section to permit assembly of the clamp ring sections around the seal ring; and a housing having a split dividing the housing into at least two sections configured to fit around the shaft, the housing including first and second notches having at least one converging angle sidewall configured to receive and engage the tabs so as to prevent rotation of the clamp ring relative to the housing. Upon shaft rotation, the tabs each engage at least one converging angle sidewall to provide metal-to-metal contact between the tabs and the housing.

Abstract: The oil control ring 1 is provided to attach in an annular groove 10 formed in a piston 2 for internal combustion engine. The spacer expander 4 comprises a base 8, a plurality of supports 6 and a plurality of arms 7. The supports 6 and arms 7 are integrally formed with the base 8 to extend from an outer periphery 8a or inner periphery 8b of the base 8. The supports 6 resiliently urge a side rail 5 mounted on the space expander 4 toward an upper surface 14 of the annular groove 10 so that during upward stroke of the piston 2, the supports 6 can be resiliently deformed to form between the side rail 5 and upper surface 14 of the groove 10 a radial passage through which oil scraped by the side rail can be drained. Each arm 7 is provided with a lug 8 to resiliently urge the side rail 5 in radial and outward direction.

Abstract: In a connection between a pipe and a molding, a tubular housing, fixed on the molding, engages around the pipe with an inner wall tapering conically toward the free end of the housing. Arranged between the pipe and the housing inner wall is a clamping ring, which braces the pipe with the housing in a wedge-like manner. The clamping ring is held in its wedging functional position by a spring element acting on it in the axial direction. The spring element can be locked in a prestressed state without force acting on the clamping ring. To establish the connection between the pipe and the molding, a locking clip passing through the housing is pulled out of the housing to relax the spring element.

Abstract: A metal gasket for an internal combustion engine is formed of a metal plate having a first side and a second side opposite to the first side, and at least one first hole corresponding to a cylinder bore. The first hole is located closer to the first side than to the second side to thereby form a first area at the first side and a second area greater than the first area at the second side. A first bead is formed in the metal plate to extend along an entire outer periphery of the metal plate. The first bead has a first portion located at the first side and a second portion located at the second side. The first portion has a spring constant greater than that at the second portion to thereby provide a tightening pressure on the metal plate as equal as possible. When sealing devices are formed around the fluid holes, the sealing devices can be equally compressed to securely seal therearound.

Abstract: A brush seal which, among other applications, may be used for sealing a steam leakage gap between the shrouded free end of steam-turbine buckets (blades) of a steam-turbine rotor and a circumferentially surrounding steam-turbine stator. In a first embodiment, the brush seal includes first and second bristle packets having, respectively, first and second bristles, wherein the second bristles are more abrasive than the first bristles. In a second embodiment, the brush seal includes a bristle packet having bristles which are more abrasive proximate their free ends than not proximate their free ends.

Abstract: An attachment (5) is detachably mounted on the lower end of a main shaft ram (4) in such a manner that the attachment (5) can rotate about horizontal and vertical axes. The power line of a motor installed in the attachment (5) is inserted through a pair of flexible tubes (13, 25) with its ends connected to a terminal box of the attachment (5) and a terminal box (29) of the main shaft ram (4). The flexible tubes (13, 25) have a pair of connectors (15, 26) which are coupled to each other by a coupling mechanism (27) when the attachment (5) is mounted on the main shaft ram (4). A drum (30) and a rodless cylinder 32 provided above the connector (26) constitute a mechanism (36) for lifting the flexible tubes (13, 25). When the rotation of the attachment (5) about either or both of the axes causes slack in the flexible tube (13), the lifting mechanism (36) eliminate the slack bay pulling up the drum (30) and thus the flexible tube (25).

Abstract: A PCI card is inserted through an I/O opening in a computer panel. On one edge of the card is a cover from one end of which projects a tab. A resilient gasket is attached to the panel to create a flexible EMC seal around the opening. Preferably the gasket is formed of tin-plated beryllium copper. The gasket has alternate staggered spring fingers oriented opposite to the direction of insertion of the PCI card. To retain the gasket the panel is formed with slots at either end and an outward struck projection at the middle. The gasket is formed with a tongue at either end to be inserted in one of the slots and a punched-out opening to receive the projection.

Abstract: A sealing device for a fluidtight screw connection. When screwing in a screw to be sealed into a fluid-carrying threaded bore of a component, in order to prevent a rectangular sealing ring from extending into a gap between a radial flange of the screw and the component as a result of tangential stress, the sealing device embodies a rectangular sealing ring having a thinner thickness than a countersink into which the sealing ring is inserted. A radial flange of the screw includes a collar that protrudes into the countersink and elastically compresses the rectangular sealing ring so that the sealing ring rests sealingly against a bottom of the countersink and against the collar of the screw.

Abstract: Plastic-lined fittings and their method of manufacture. The fittings are capable of being joined without flanges to plastic-lined piping systems. The fittings feature a zero tolerance fit between the liner and the metal portion of the fitting, and an outward expansion of the portion of the liner which extends past the metal portion.

Abstract: A grommet includes a hollow cylindrical body that is positionable in a bore hole of a transmission case and into which an oil fill tube can be advanced, to thereby establish a seal between the tube and case. The grommet defines an open top end, and a scored membrane is formed integrally with the body to cover the top end. Consequently, the grommet can be positioned in the bore hole to cover the bore hole prior to engaging the oil fill tube with the bore hole, thereby permitting pressure testing of the transmission case and preventing contaminants from entering the case. The oil fill tube can then be advanced through the membrane and into the bore hole.

Abstract: A single pole piece magnetic fluid seal apparatus, which includes a shaft sleeve, having magnetic properties, attached to and surrounding a shaft element to be sealed is provided The apparatus also includes single pole piece surrounding the shaft sleeve, proximate to and in non-contacting relationship with the shaft sleeve so as to define a radial gap between the pole piece and the shaft sleeve, The single pole piece includes first and second annular elements attached by a cross piece consisting of a third annular element, wherein the first, second and third annular elements define an annular channel therebetween. The apparatus also includes at least one magnet located within the annular channel and magnetic fluid disposed in the radial gap to provide a seal between the shaft sleeve and the pole piece. The magnet and the single pole piece provide a magnetic flux path through the pole piece, magnet, magnetic shaft sleeve and magnetic fluid.