A fitting for a pipe includes a cylindrical sleeve including at least one observation through window, a spigot disposed concentrically within the cylindrical sleeve and having an outer surface sized to fit within a proximal end of the pipe, wherein the cylindrical sleeve is movable with respect to the spigot in a proximal direction to a sealed position and a locking assembly interposed between the cylindrical sleeve and the spigot to lock the cylindrical sleeve to the spigot in the sealed position. The at least one observation through window provides a view of at least a portion of the locking assembly to determine whether the cylindrical sleeve is locked in the sealed position.

A pipe fitting configured to be coupled to a pipe, the pipe fitting including a body that is elongate along a central axis that extends in a longitudinal direction, the body including a shell, a stiffener, and a shell-stiffener. The shell includes a shell inner surface that defines a shell through hole that extends through the shell in the longitudinal direction. The stiffener is positioned within the shell through hole, and the stiffener includes a shell outer surface that faces the shell inner surface such that the stiffener outer surface and the shell inner surface cooperate to define a pocket configured to receive the pipe. The shell-stiffener seal member includes a first seal member and a second seal member aligned in a radial direction, which is perpendicular to the longitudinal direction.

A pipe fitting configured to be coupled to a pipe, the pipe fitting including a body that is elongate along a central axis that extends in a longitudinal direction, the body including a shell, a stiffener, and a shell-stiffener. The shell includes a shell inner surface that defines a shell through hole that extends through the shell in the longitudinal direction. The stiffener is positioned within the shell through hole, and the stiffener includes a shell outer surface that faces the shell inner surface such that the stiffener outer surface and the shell inner surface cooperate to define a pocket configured to receive the pipe. The shell-stiffener seal member includes a first seal member and a second seal member aligned in a radial direction, which is perpendicular to the longitudinal direction.

The present invention relates to a coupling element comprising a cannula, a body and at least one first jaw movable in rotation about a first axis of rotation. In a clamping position, the first jaw presses a hose against the cannula in a zone defined by a boundary plane spaced from the first axis of rotation by a first distance. The coupling element further comprises a movable pusher having a first bearing surface configured to exert a movement force on a force-receiving surface of the first jaw. When the first jaw is in the clamping position thereof, a first radial gap between the first axis of rotation and a contact point of the force-receiving surface and of the first bearing surface has a value greater than the value of the first distance.

A quick coupling for the flexible tube supplying seeds from a storage bin to row crop units in a row crop seed planter. The quick coupling has an outer annular element with a bayonet connection and a central bore which receives an annular insert having two arcuate sections and holding the flexible tube in place through barbs. The inserts are removable from the outer annular coupling by means of a detent at which point the arcuate sections may be easily removed from the flexible tube.

A quick coupling for a flexible tube has an outer annular element with a bayonet connection and a central bore which receives an annular insert having two arcuate sections and holding the flexible tube in place through barbs. The inserts are removable from the outer annular coupling by means of a detent at which point the arcuate sections may be easily removed from the flexible tube.

Spigot device including a spigot formed with exterior gripping teeth and sleeve device to telescope over the spigot. The sleeve device is formed with a radially inwardly opening, distally contracting conical bearing surface which mounts a radially inwardly contractible gripper ring device captive therein, and constructed to be driven radially inwardly by the bearing surface as the sleeve is drawn proximally on the spigot to grip a plastic pipe trapped in the annulus between the sleeve and spigot.

The steps of selecting a spigot device including a distally projecting spigot of a predetermined outside diameter. Selecting a sleeve device formed with a radially inwardly opening interior retainer collar with an interior distally extending and radially and inwardly sloped bearing surface defining a gripper ring cavity. Selecting a gripper ring device which is contractible radially inwardly and inserting in the cavity and retaining the gripper ring device in the cavity to cooperate with the outside diameter to form an annulus for receipt of the plastic pipe and causing the gripper ring device to grip the pipe.

A fluid-tight hose connection for a surgical instrument including: a hose having an inner hose and an outer protective hose surrounding the inner hose, wherein the inner hose has a coiled hose portion at an end portion of the hose; and a sleeve having a wedge-shape in a longitudinal section, the sleeve being arranged between the coiled hose portion of the inner hose and the outer protective hose.

An end fitting assembly for a pipe-in-pipe assembly comprises a socket portion, a connector portion extending from the socket portion, a stop located between the socket portion and the connector portion, a collar that fits around the socket portion and attaches to the stop, and a wedge that fits between the collar and an inner composite pipe. When the collar is pushed onto the wedge, a series of collar cone sections engage a series of wedge cone sections causing a compression force on the inner composite pipe. The collar and the wedge are shaped so that they fit within an outer pipe of the pipe-in-pipe assembly. The compact shape of the collar and wedge facilitate reeling the pipe-in-pipe assembly onto a reel without causing excessive stress in the pipe-in-pipe assembly.

A fitting for a pipe includes a cylindrical sleeve including at least one observation through window, a spigot disposed concentrically within the cylindrical sleeve and having an outer surface sized to fit within a proximal end of the pipe, wherein the cylindrical sleeve is movable with respect to the spigot in a proximal direction to a sealed position and a locking assembly interposed between the cylindrical sleeve and the spigot to lock the cylindrical sleeve to the spigot in the sealed position. The at least one observation through window provides a view of at least a portion of the locking assembly to determine whether the cylindrical sleeve is locked in the sealed position.