According to an embodiment of the present disclosure, a refrigerant pipe fitting, the fitting having a pipe shape with a hollow to connect a pipe, may include an out pipe opening which is opened at one end of the fitting and into which an out pipe is inserted; an inner pipe opening which is opened at the other end of the fitting and into which an inner pipe is inserted to be inserted into the out pipe inside the fitting; a pressing portion which is configured to form a part of an inner surface of the fitting and formed to have a narrower inner diameter as it extends toward the inner pipe opening to press and deform the out pipe to allow the out pipe to connect with the inner pipe in movement of the fitting; and a fastening portion which is formed on the inner surface of the fitting between the pressing portion and the out pipe opening to constrain an end of the out pipe to prevent the fitting from being separated.

The invention relates to a fitting to be connected to at least one pipe, in particular a plastic pipe or plastic-metal composite pipe, having a main body, having at least one supporting body connected to the main body for insertion into a pipe end and having at least one pressing sleeve connected to the main body for receiving the pipe end, the pressing sleeve having a cylindrical pressing section. The technical problem of improving the fitting for pressing, in particular with small motor-driven or manually driven pressing tools, is solved by the fact that the pressing sleeve is made of a metal with a microhardness of less than 65 HV 1, in particular less than 50 HV 1, preferably in the range from 40 to 50 HV 1 measured according to Vickers, and that the ratio of wall thickness of the pressing section to the outer diameter of the pressing section is less than 0.06, preferably in the range from 0.03 to 0.06. The invention also relates to a method for establishing a connection.

A method of friction welding a workpiece to a fluid element includes the step of placing a workpiece weld surface in contact with a fluid element weld surface. The workpiece weld surface is driven in a predetermined pattern along the fluid element weld surface. Pressure is applied between the workpiece weld surface and the fluid element weld surface to produce friction and heat sufficient to raise the temperature of the weld surfaces to welding temperature. A weld bond is formed by stopping the driving of the workpiece weld surface while applying the pressure between the weld surfaces. Before and/or after the weld bond is formed, at least a portion of the workpiece is machined to form at least a portion of a fluid fitting configured to receive and sealingly attach to a pipe in a non-leaking manner to convey a flow of fluid therethrough.

A shield assembly for logging tool sensors includes a single piece cylindrical shield and first and second cylindrical end clamps deployed about opposing axial ends of the cylindrical shield. The cylindrical shield is deployed about a logging sensor disposed on a logging tool collar. At least one of the first and second end clamps includes one or more keys for engaging a corresponding slot in the shield and a corresponding pocket in an outer surface of the tool collar. Engagement of the key with the corresponding slot and the corresponding pocket is operative to prevent relative rotational and relative axial motion between the cylindrical shield, the first and second end clamps, and the tool collar.

An apparatus and process by which a leak-proof connection with a polymeric tube is described herein. Particular embodiments of the present invention include a leak-proof connection fitting inserted into a bore of a overmolded attachment piece wherein the overmolded attachment piece is overmolded onto the polymeric tube. The leak-proof connection fitting includes multiple surfaces in various configurations. The multiple surfaces include barb(s), raised surface(s), reduced surface(s), and channel(s). O-rings may be further added to the leak-proof connection fitting. In some embodiments, the overmolded attachment piece or the tube itself is secured to the fitting by shape memory.

The present invention relates to a sliding sleeve (1) for axially sliding onto an expanded end of an all-plastic pipe (4) or a plastic composite pipe, into which is slid a support body (6, 6a) having circumferential external ribs (7, 7a, 7b, 7c) of an connecting element (3), wherein the sliding sleeve (1) is made of an elastically-deformable polymeric material, wherein the internal surface (2) of the sliding sleeve (1) has an average roughness value R.sub.a in a range starting from 1 m to half of the average wall thickness of the sliding sleeve (1). Furthermore, the present invention relates to a sliding sleeve (1) for axially sliding onto an expanded end of an all-plastic pipe (4) or of a plastic composite pipe, into which is slid a support body (6, 6a) having circumferential external ribs (7, 7a, 7b, 7c), wherein the sliding sleeve (1) is made of an elastically deformable polymeric material, wherein the inner surface (2) of the sliding sleeve (1) has a plurality of macroscopic irregularities (9), the depth of which does not exceed half of the average wall thickness of the sliding sleeve (1). The present invention further relates to a sliding sleeve connection (3) between an end of an all-plastic pipe or a plastic composite pipe (4) and a connecting element (5), the sliding sleeve connection comprising an expanded end of an all-plastic pipe (4) or a plastic composite pipe; a connecting element (5) having at least one support body (6, 6a) provided with circumferential external ribs (7, 7a, 7b, 7c), onto which the expanded end of the all-plastic pipe (4) or of the plastic composite pipe is axially slid; and a sliding sleeve (1) according to the invention axially slid onto the expanded end thereof. Finally, the present invention relates to a method for producing a connection (3) between an end of an all-plastic pie (4) or of a plastic composite pipe and a connecting element (5) having at least one support body (6) provided with circumferential external ribs (7, 7a, 7b, 7c), said method comprising the steps of expanding the end of the all-plastic pipe (4) or the plastic composite pipe; inserting the supporting body (6, 6a) of the connecting element (5) into the expanded end of the all-plastic pipe (4) or the plastic composite pipe; and pressing of

A fluid fitting is provided that is mechanically attached to a pipe, including a coupling body having an inner surface defining a bore for receiving the pipe therein. A ring is positioned to fit over the at least one end of the coupling body for mechanically attaching the coupling body to the pipe, and a main seal formed on the inner surface of the coupling body to engage the pipe. When installed, the ring and coupling body apply a compressive force to the main seal sufficient to attach the pipe to the coupling body in a non-leaking manner. An electrically operated sensor device is fixed to a surface of one of the coupling body or ring that, when the ring is installed on the coupling body, produces an electrical parameter in response to physical movement of the coupling body or ring to which the sensor device is fixed.

A preassembly for a conduit fitting includes an annular fitting component and a conduit gripping device. The annular fitting component has an interior wall extending along a central axis from an inboard end to an outboard end. The interior wall includes an inboard surface having a first diameter, an outboard surface having a second diameter smaller than the first diameter, and an intermediate surface recessed from the inboard surface by an outward facing inboard radial wall and recessed from the outboard surface by an inward facing outboard radial wall. The conduit gripping device is retained within the annular fitting component and includes a projection extending radially outward of an outer circumferential surface of the conduit gripping device, and axially toward an inboard end of the conduit gripping device, with an end portion of the projection being axially captured between the inboard radial wall and the outboard radial wall.

Methods for forming a pipe end for a pipe having an inner surface lined with a liner are provided, wherein the pipe is cut at an axial location to provide a first end having an initial inner diameter defined by an inner surface of the pipe; and a length of the pipe is expanded from the first end to form an upset, bell end where an inner diameter of the upset, bell end is larger than the initial diameter, thereby defining an annulus between the inner surface of the pipe and the liner. A clamp for limiting a pipe's movement during various operations is also provided.

A fluid connection set includes a connector (1), a flexible hose (2), and a crimping collar (5) for fixing the front end of the flexible hose to the connector, the connector including a connector body (10), a tubular nozzle (3), the tubular nozzle including retaining radial projections (31) of the hose as well as a clamping area (30) of the hose, and a temporary accommodation space (4), arranged between the tubular nozzle (3) and the connector body (10), for housing the collar during the operation of inserting the flexible tube, after which the collar is moved with respect to the clamping area and then crimped.