Abstract: The present invention relates to an improved hydraulic coupling which forms contact seals to fluidly connect a tube to a tapered port by crimping (tube-to-port). The contact seal includes a metal-to-metal seal with a secondary elastomeric seal. A crimped collar of the port retains a compression ring in a metal-to-metal contact. Another embodiment of the invention provides a transverse fluid coupling for a tube with the port being part of the bolt/body assembly of a "banjo" coupling. The crimped collar of the present invention is removed from the contact seal so that flexural forces and vibration of the coupling can be better resisted. The port, tube, and compression ring define a pocket for the location of a sealing ring disposed in the pocket. The pocket has a cross-sectional area larger than the cross-sectional area of the sealing ring. The tube may include a lip having an outwardly facing tapered surface substantially complementary to the tapered surface of the port.

Abstract: The present invention relates to an improved hydraulic coupling which forms contact seals to fluidly connect a tapered port with a tube having a threaded connecting portion. The contact seals may be metal-to-metal seals, or alternatively may include a resin polymer element. For connecting a tube directly in the port, one embodiment of the invention includes an outwardly extending lip on an expanded portion of the tube and a tube nut rim wherein the tube nut engages the expanded portion and by tightening the tube nut, the tube lip deforms on the tapered port and the tube nut rim deforms on both the tapered port and the tube. Another embodiment of the invention provides a fluid coupling for a tube which is transverse to the port, allowing for flow redirection in the coupling similar to the flow redirection in prior art "banjo" couplings.

Abstract: The present invention relates to an improved hydraulic coupling which forms contact seals to fluidly connect a tapered port with a tube having a threaded connecting portion. The contact seals may be metal-to-metal seals, or alternatively may include a resin polymer element. For connecting a tube directly in the port, one embodiment of the invention includes an outwardly extending lip on an expanded portion of the tube and a tube nut rim wherein the tube nut engages the expanded portion and by tightening the tube nut, the tube lip deforms on the tapered port and the tube nut rim deforms on both the tapered port and the tube. Optionally, o-rings may be added to provide additional seals. The coupling may be designed not to seal without the application of tool generated torques.

Abstract: The present invention is a hydraulic coupling and method of making the same. The coupling includes a male fitting, a female port, and a lock nut. The male fitting has external threads which receive the female port and the lock nut. The female port has an internal tapered recess for mating with an external tapered surface of the skirt of the lock nut. The skirt portion has inner and outer sections which initially form a double angle on the exterior surface. The outer section is bent inwardly to form a tapered external surface forming a steeper internal angle with the male fitting. An O-ring is positioned about the male fitting for sealing the hydraulic coupling within the tapered recess. The fitting of the present invention is also adaptable to the O.R.S. fitting and the S.A.E. flange fitting. A tapered surface of the female port engages an O-ring positioned in an annular groove of the male fitting.

Abstract: The present invention is a hydraulic coupling and method of making the same. The coupling includes a male fitting, a female port, and a lock nut. The male fitting has external threads which receive the female port and the lock nut. The female port has an internal tapered recess for mating with an external tapered surface of the skirt of the lock nut. The skirt portion has inner and outer sections which initially form a double angle on the exterior surface. The outer section is bent inwardly to form a tapered external surface forming a steeper internal angle with the male fitting. An O-ring is positioned about the male fitting for sealing the hydraulic coupling within the tapered recess. The fitting of the present invention is also adaptable to the O.R.S. fitting and the S.A.E. flange fitting. A tapered surface of the female port engages an O-ring positioned in an annular groove of the male fitting.

Abstract: An adapter fitting made of two parts, a mounting member containing a fluid cavity and a flange member having bolt holes therein, is designed to enable fluid flow components of the type which can be bolted together and provide sealing at mating faces to be used with threaded connections and bolt-on flange connections.

Abstract: An adapter fitting made of two parts, a mounting member containing a fluid cavity and a flange member having bolt holes therein, is designed to enable fluid flow components of the type which can be bolted together and provide sealing at mating faces to be used with threaded connections and bolt-on flange connections.

Abstract: A fluid coupling assembly particularly adapted for connecting hydraulic conduits to the ports of a fluid manifold. The coupling comprises a male member which is threadedly connected to the port and which includes tapered locking surfaces on the male and female members, respectively, that are in tight frictional engagement when the male member is threaded into the female member. An O-ring is positioned in a pocket and disposed between the threads and the tapered locking surfaces to isolate the locking surfaces from hydraulic fluid, thereby ensuring a dry, frictional wedge lock. The O-ring is of a size that permits it to move axially in the pocket. In a modified embodiment of the coupling, there is provided an adjustable fitting which includes a lock nut having a skirt portion that is wedged into the tapered O-ring pocket.

Abstract: The static seal comprises a semi-rigid annular part (11) shaped as a bead and first and second wings (12, 13) extending transversely with respect to the seal axis and laterally connected to the bead portion (11) in a gradual manner by means of concave surfaces with a large curvature radius. The seal has in its axial cross-section the shape of a V lying on its side, the tapered surfaces (16, 17) of the branches (12, 13) of the V being slightly inclined with respect to the planar surfaces (18, 19) of the bead (11) to which they are attached. The branches (12, 13) of the V forming the wings have an elasticity such that by flexure of said tapered surfaces (16, 17) of the V branches and slight flexure of the bead (11), the extremities of said surface may form with the planar surfaces (18, 19) of the bead (11) to which they are attached two sealing regions. Said seal is intended to be used in severe conditions of temperature, pressure, vibrations and chemical attack.

Abstract: A pipe joint for mating with a standard S.A.E. port includes at its outermost portion standard S.A.E. threads, an innermost threaded portion for receiving a nut, an annular groove between the innermost and outermost threaded portions for receiving a back-up washer adjacent the nut, and an "O"-ring between the washer and outermost threaded portion.

Abstract: The invention relates to pipe connections satisfying hygienic demands, comprising two members which can be screwed together and a seal ring of plastically or elastically deformable material lying therebetween, and the object of the invention is to prevent the seal ring from being carried along and being displaced during tightening resulting in formation of nooks that might give rise to bacterial growth, cleaning problems and risks of contamination. According to the invention this object is achieved in that a first member has a first bore and a larger diameter second bore connected thereby by a Z-shaped transition, while a second member has an oblique end surface, a cross-sectionally triangular interspace being formed between the oblique end surface and a shoulder of the transition to receive the seal ring and to be filled out practically completely by the seal ring when the members are screwed together, and the seal ring may even protrude to some extent into the through hole.

Abstract: A small-diameter tubing connector and sealing apparatus for anchoring a tubing end in fluidtight engagement in high pressure service (up to 60,000 psi), said apparatus having four separate sealing areas.

Abstract: A fluid check valve having a cylindrical tubular body member which is symmetrical and is adapted to receive a pair of opposed head members which have suitable coupling ends formed thereon. The head members may be threaded on to the body or secured to the body with pins that prevent transmission of uncoupling torque to head retaining nuts engaged with the body. A valve closure disc is mounted on a removable support ring retained in a counterbore formed in the valve body by one of the head members. A valve seat surface may be integrally formed on a transverse face of one or both of the head members or may be provided as a separate seat insert threadedly mounted on the head members. The head members may be interchanged to accommodate particular coupling arrangements. The seat surface on the downstream head member is protected by a removable wear ring, or a removable wear ring insert is mounted in the head member in place of the seat insert.

Abstract: A tubular fitment capable of establishing a fluid tight passage defining a connection between first and second confined space defining means, with the tubular fitting when in a first condition permitting the second confined space defining means and a second portion of the tubular fitment to be rotated relative to a first portion of the tubular fitment and the first confined space defining means, and the tubular fitment when in a second condition locking the first and second portions thereof in fixed positions relative to one another.

Abstract: This invention relates to fittings for a pipe adapted for interconnecting a gas turbine engine and its fuel control where the fitting has a swivel connection for simple angular alignment and a friction plate locking the fitting and characterized as having a low profile, a simple two-bolt connection and good sealing.

Abstract: A fitting for establishing a sealed connection with a boss which fitting includes a concentric depression about the innermost portion of its boss engaging surface, which retains a backup ring of special cross-section by means of an inwardly facing circumferential surface therein, the ring, being constructed from material which creeps when subjected to force over an extended length of time, combining with the depression to control the deformation of an adjacent O-ring so that any gapping adjacent the O-ring is of insufficient size to allow extrusion thereof and seal failure.

Abstract: A wall duct assembly is disclosed comprising a duct piece or unit having arranged on its outside diameter retaining grooves for sealing structures. The sealing structures can be adjusted through the aid of pressure rings to provide effective sealing of the duct unit in walls or like structures.