Abstract: A lenticular sealing ring comprises alternately arranged lamellae (1) made of expanded graphite and metal lamellae (2). The density of the graphite lamellae (1) increases from the inside toward the outside of the sealing ring. The layering is configured so that on both sides of the lenticular surfaces at least half of the curved surface is covered by a continuous graphite lamella (1') and a plurality of encircling metal and graphite lamellae (1, 2) terminated in the outer edge region.

Abstract: An API groove seal is a metal ring of cross-section like a capital letter omega arranged so that the tips of its limbs provide the sole contact with the groove base before and after compression. The central or heel region may abut on the outer side wall of the groove. A family of seals for different pressure ratings has a common profile, differing only in respect of the thickness of the limbs.

Abstract: The invention relates to a metal gasket, in particular a cylinder head gasket, having two beaded metallic cover sheets and having at least one sandwich sheet, which surrounds an opening. The sandwich sheet features a folded edge, that lies in the region of one of the beads of one of the cover sheets. Further, the folded edge is formed in the direction of one of the beads.

Abstract: A sealing device for effecting a seal between two relatively movable members, such device being formed from a single strip of springy metal shaped to form a hollow body from which a pair of parallel mounting legs extend. Between the legs is one part of a reinforcing member having a second part which extends into the body and overlies and spans the bottom thereof. Fasteners secure the mounting legs and the reinforcing member to one of the relatively movable members.

Abstract: A metal gasket assembly for a cylinder head comprises: a metal substrate having a predetermined shape with apertures including cylinder openings, bolt holes, coolant openings and lubricant openings, which metal substrate being provided with half-beads in regions adjacent to the cylinder openings and full-beads in regions therearound; a metal sub-plate having the same planar configuration with and being thinner than the metal substrate; ring-shaped shims attached to the metal sub-plate in regions corresponding to the half-beads of the metal substrate; and a metal by-plate having the same planar configuration with the metal substrate and provided with full-beads in regions corresponding to the full-beads of the metal substrate; which metal substrate, metal sub-plate with shims and metal by-plate forming a laminated gasket assembly.

Abstract: This ultrasonic transducer has a high chemical resistance and a small diameter and can be used over a very wide temperature range. It has a single-piece, can-shaped housing (1) sealed off by a diaphragm (12), a sensor element (2), arranged in the housing (1), for transmitting and receiving ultrasound, a matching layer (3) arranged between the diaphragm (12) and the sensor element (2), a stress equalizing layer (5) which completely encloses the sensor element (2) apart from a front area adjoining the matching layer (3) and is made of a thermosetting plastic, especially of an epoxy resin, a clamping ring (4) coaxially enclosing the matching layer (3), and a damping layer (6) that fills a cavity that remains in the housing (1) and is bounded by the clamping ring (4), the stress equalizing layer (5) and the housing (1).

Abstract: A waterproof seal for a connector has a generally tubular body. Each of opposite end surfaces, formed respectively at opposite ends of the tubular body, is shaped such that two adjacent waterproof seals that contact either of the opposite end surfaces of the other waterproof seal are prevented from sticking to each other. Specifically, each of the opposite end surfaces is formed into a substantially conical shape. With this construction, even if the waterproof seal is made of oil-containing rubber or the like exhibiting a sticky nature, the waterproof seals will not stick to each other, and the waterproof seals can be smoothly fed in order by a parts feeder.

Abstract: The fully split cartridge mechanical seal assembly is comprised of two unitized self contained assemblies which fit together to form a unitized cartridge design. The assembly uses set screws to position the seal assembly to the rotating shaft or sleeve and slots in the gland to receive attaching means to a fixed stationary or chamber. The stationary components of the assembly include the following: a split stationary seal ring, a split stationary seal ring packing, springs set into apertures in the split gland, the split gland, the split gland gasket, gland bolts, a gland split gasket, and setting clips and screws. The rotating components include the following: a split rotary seal ring, split rotary seal ring packing, a split sleeve, the split sleeve packing, the sleeve bolts, cup point set screws, and sleeve split gasket.

Abstract: A pressure balanced bellows seal for a valve or pump is disclosed. The bellows seal includes a seal bellows assembly which is operatively and sealingly attached to the valve stem, a counterbellows assembly which is substantially concentric with the seal bellows assembly, a midplate which operatively joins the seal bellows assembly and the counterbellows assembly in an end-to-end arrangement, and an inert fluid within the cavity formed by the seal bellows assembly and the counterbellows assembly and which is moveable therebetween to compensate for volumetric changes resulting from the axial movement of the valve stem. The inert fluid balances the pressure of the process fluid and distributes it substantially uniformly against the seal bellows assembly and the counterbellows assembly thus substantially eliminating any pressure stresses within the bellows assemblies.

Abstract: A temperature detecting circuit generates an output signal depending on temperature and unaffected by variations of power supply voltage. The temperature detecting circuit provides a diode which generates a voltage across two terminals depending on the temperature, a first resistor connected to the anode of this diode, a second resistor whereof one end is earthed, first and second transistors for applying a fixed voltage to the first and second resistors, third and fourth transistors supplied by the current flowing through the first and second resistors, fifth and sixth transistors to the bases of which the emitter currents of the third and fourth transistors are applied, and seventh and eighth transistors to the bases of which the emitter currents of the fifth and sixth transistors are applied. The output current from the output terminal 20 varies according to the temperature, but does not vary with the power supply voltage.

Abstract: Devices and methods employ a solid-based medium that serves as a magnetic sealant, a lubricant, a bearing, an electrical or thermal conductor, singly or in combination. Included are devices wherein the solid-based medium is retained in a selected position using a magnetic field. In particular, the solid-based medium is either magnetically coupled to the magnetic field or is contained within a cavity sealed by a magnetic seal. In one group of embodiments, the solid-based medium comprises molecules having a molecular structure wherein one element of the structure is a cage or tube, as in fullerenes or met-cars. Such molecules are particularly useful in all of the devices of the present invention because of their exceptional stability and resilience. These properties ensure good performance in corrosive and/or vacuum environments and over a longer lifetime than is possible with conventional media.

Abstract: A gas-path leakage seal for generally sealing a gas-path leakage-gap between spaced-apart first and second members of a gas turbine (such as first and second segments of a gas turbine combustor casing). The seal includes a generally imperforate foil-layer assemblage which is generally impervious to gas, is located in the leakage-gap, is spaced apart from the first member, and has a first foil layer. The seal also includes a cloth-layer assemblage contacting the first member and having a first cloth layer generally enclosing and generally enclosingly-contacting the foil-layer assemblage. The first foil layer is made from a metal, ceramic, and/or polymer. The first cloth layer is made from metal, ceramic, and/or polymer fibers. The foil assemblage provides for sealing and flexibility, and the cloth assemblage provides for wear resistance and flexibility. The seal accommodates different surface shapes, assembly misalignment, vibration, and differential thermal growth of the gas turbine members.

Abstract: A resilient sheet of material having a centrally-located aperture having a pump shaft slidably disposed through the aperture to form a sphincter seal therebetween. An inlet conduit leading from a fluid source (an IV bag) passes through the housing into the cavity near the open end thereof, and an outlet conduit leading to a fluid sink (the patient) passes through the housing from the cavity near the closed end thereof. The shaft is driven back and forth in reciprocating motion inwardly and outwardly of the cavity to produce, respectively, a positive pressure forcing fluid out of the outlet conduit to the fluid sink, and a negative pressure forcing fluid from the fluid source through the inlet conduit.

Abstract: A metal gasket for an internal combustion engine is installed between two engine parts. The metal gasket is formed of at least one metal plate extending substantially throughout an entire area of the engine to be sealed. The metal plate includes at least one bolt hole, a fluid hole situated near the bolt hole, a sealing device for surrounding the fluid hole to seal therearound, and a support bead situated around the sealing device without surrounding the bolt hole. The support bead is deviated from the fluid hole to balance surface pressure around the fluid hole when the engine parts are tightened. In case the gasket is formed of a plurality of metal plates, the sealing device and the support bead are formed on the different plates.

Abstract: A gasket able to ensure static imperviousness between two parts one being fixed with respect to the other and possibly having surface irregularities and forming a joint housing which is not easily accessible.It generally has a flexible strip (2) formed by two elements (2I, 2E) each having one extremity (7I, 7E). The mechanical behavior of the gasket is ensured by a wire core (3), such a helical spring possibly surrounded by an internal casing (4). An external rigid casing formed of two portions (5E, 5I) advantageously completes this gasket while leaving the extremities (7E, 7I) free.

Abstract: A seal assembly (10) includes a relatively rigid seal holder (12) and a relatively soft O-ring seal member (14). The seal member (14) is disposed in an annular groove (16) in the seal holder (12). A plurality of ribs (70) are disposed between the seal member (14) and the bottom (76) of the annular groove (16) in the seal holder (14) to retard rotation of the seal member (14) relative to the seal holder (12). In one embodiment of the invention, the ribs (70) are integrally formed as one piece with the seal holder (12) and engage an outer side surface (72) of the seal member (14). In another embodiment of the invention, the ribs (70) are integrally formed as one piece with the seal member (14a) and engage a smooth arcuate bottom of an annular groove in a seal holder. In another embodiment of the invention, both the seal holder (12) and the seal member (14a) are provided with ribs (70 and 70a).

Abstract: A shaft seal (20) suitable for use in automotive shock absorber. The shaft seal (20) includes an annular dust sealing member (36) having a dust sealing lip (56) and an auxiliary rib (60). The auxiliary rib (60) is configured to present a rounded profile (62) having the radius of curvature larger than the radius of curvature of the dust sealing lip (56). The dust sealing lip (56) supported by the auxiliary rib (60) sustains dust scraping action for a prolonged time period to effectively prevent ingress of dust and dirt.

Abstract: A device for sealing a space between an annular wall defining an opening and a pipe end portion introduced into the opening consists of a sleeve (2) having at one end thereof a flange (4) for restricting the introduction of the sleeve into the opening and having at its other end a flange (6) for restricting the introduction of the pipe end portion into the sleeve.

Abstract: A rotating machine has a splined primary shaft rotatably mounted in an opening of an oil-filled housing and a primary seal carried by the housing for sealing with a mating secondary splined shaft upon insertion of the secondary shaft into the housing opening for mating with the primary shaft. A retractable member is carried by the primary shaft for sealing with the primary seal to maintain the oil within the housing prior to the insertion of the secondary shaft and prevent the flow of oil to the spline. Upon insertion of the secondary shaft through the housing opening, the secondary shaft seals with the primary seal to prevent leakage from the housing. Furthermore, the secondary shaft forcibly retracts the retractable member away from the primary seal and establishes a flow path around the retractable member to the secondary shaft so that oil flows to the mating splines of the shafts.

Abstract: A sealing device for a shaft rotating relative to a frame, particularly for a pump shaft, wherein a protective sleeve surrounding the shaft is fixedly mounted for rotation with the shaft; a collar step surrounding the sleeve is fixedly mounted on the frame; a sealing device surrounding the sleeve is non-rotatingly mounted within the frame and includes a lantern ring for connection to a source of lubrication liquid; an annular ring with a sealing lip is inserted between the collar step and lantern ring; and a packing braid is disposed between the lantern ring and a device for compressing the braid.