A pipe-fitting includes a coupling and a flexible pipe-restraint gasket. The coupling includes a bell that defines a pipe insertion mouth at an end of the coupling and an inner recess. The flexible pipe-restraint gasket assembly is disposed within the inner recess and includes an annular body, a plurality of discrete gripping members and at least one extension portion. The plurality of gripping members are disposed around an outer periphery of the body. The at least one extension portion extends from the body and is disposed between a pair of the plurality of gripping members. The at least one extension portion defines a pocket.

A tube connector has a main body, a restricting element, and a sealing ring. The main body has a mounting segment extending outwardly and transversely to form an inner annular space to accommodate the restricting element and the sealing ring. When the tube body is inserted, the tube body will be engaged and positioned by teeth of the restricting element. The sealing ring and the restricting element abut each other to maintain the sealing from the sealing ring. The changes of the pressure from the fluid transporting in the tube body will move the tube body and the main body relatively to and fro, and thus the abutting force against the sealing ring will increase or decrease accordingly, which maintains the elasticity of the sealing ring to maintain the sealing after a long time of use, thereby avoiding elastic fatigue and prolonging the lifespan.

The invention provides an articulated joint in a pneumatic conveying system of a boom of an agricultural dry product applicator. The joint allows adjacent product-conveying tubes and respective joint components to articulate with respect to each other while maintaining a seal for pneumatically conveying product. Joint components may be separated from each other when the boom is folded while articulating with respect to each other without disengaging or creating potential leaks at segment junctures while the boom is extended. The articulated joint includes a rigid socket having a first socket section and a second socket section providing support to a compressible seal having a first seal section and a second seal section. The first seal section is inserted into the second socket section to create an airtight seal in between the first seal section and the second socket section even when boom tube segments flex during use.

A gripping element includes a body extending lengthwise from a first end to a second end. The body includes a first wall, a second wall extending from the first wall, and a third wall extending between the first wall and the second wall. The first wall, the second wall, and the third wall collectively define a hollow interior of the body. The body also defines an opening at each of its first and second ends. The opening at each of the first and second ends is in communication with the hollow interior of the body to permit an elastomeric material to be received within the opening at the first end of the body, within the hollow interior of the body, and within the opening at the second end of the body.

A pipe sealing gasket is shown which is designed to be received within a raceway provided within the female, belled end of a section of plastic pipe which is assembled with a mating male pipe end to form a plastic pipe joint. The gasket is made up of a hard plastic band having an outer circumferential surface and an inner circumferential surface, and two separated elastomer portions. A first of the separated elastomer portions forms an outer ring which circumscribes the outer circumferential surface of the hard plastic band. The second of the separated elastomer portions forms an inner lip which circumscribes the inner circumferential surface of the hard plastic band. The two separate elastomer portions are connected during the gasket molding operation by a series of spaced ribs which form a continuous body of elastomer connecting the first and second separated elastomer portions at spaced intervals.

A connection to releasably connect and disconnect to a pipe to a fitting provides a pipe fitting body for receiving a pipe and a retaining ring located within the fitting body for retaining and releasing the pipe. The retaining ring has axially extending resilient retaining tabs, each of which has a radially inwardly extending portion for engaging the pipe, and, a radially outwardly extending portion which extends through corresponding radial openings in the fitting body. When the pipe is inserted into the fitting body to an inserted position and the retaining ring is in the first locked axial position, the radially inwardly extending portions engage and retain the pipe in the inserted position. Relative axial movement of the retaining ring with respect to the fitting body from the first locked axial position to a second unlocked axial position causes the radially outwardly extending portions to operatively engage the corresponding body radial openings to resiliently radially outwardly deform each resilient retaining tab thereby disengaging the radially inwardly extending portions from the pipe and permitting removal of the pipe from the inserted position.

A waterproof quick coupler which closes a port of a pressure vessel in an air-tight state during a water leakage inspection of a welding portion of the pressure vessel of a compressor. The quick coupler comprises: an outer body having an opening formed at a distal end portion thereof, an inner body flexibly disposed to be rotatable and linearly movable in the outer body; a cap coupled to the distal end portion of the outer body, and a fixing lever flexibly disposed between the inner body and the cap to clamp and unclamp a port of a pressure vessel when the inner body moves forward and backward, wherein the inner body may be locked in the outer body when moving backward, and may be unlocked from the outer body when the outer body rotates in one direction.

A connection to releasably connect and disconnect to a pipe to a fitting provides a pipe fitting body for receiving a pipe and a retaining ring located within the fitting body for retaining and releasing the pipe. The retaining ring has axially extending resilient retaining tabs, each of which has a radially inwardly extending portion for engaging the pipe, and, a radially outwardly extending portion which extends through corresponding radial openings in the fitting body. When the pipe is inserted into the fitting body to an inserted position and the retaining ring is in the first locked axial position, the radially inwardly extending portions engage and retain the pipe in the inserted position. Relative axial movement of the retaining ring with respect to the fitting body from the first locked axial position to a second unlocked axial position causes the radially outwardly extending portions to operatively engage the corresponding body radial openings to resiliently radially outwardly deform each resilient retaining tab thereby disengaging the radially inwardly extending portions from the pipe and permitting removal of the pipe from the inserted position.

In the case of a hose connector assembly (1) it is provided for a retaining plate (15) to be used for axially fixing at least two hoses (6, 7, 8) in corresponding hose receptacles (3, 4, 5). The hoses (6, 7, 8) are insertable into respective recesses (16, 17, 18) of the retaining plate (15) by way of a lateral insertion movement (19), and the hoses (6, 7, 8) engage behind the recesses (16, 17, 18).

A pipe restrained joint seal and lock can include a ring that is continuous and annular. The ring can have an axis, a proximal end and a distal end axially spaced apart from the proximal end. A spline can extend from the ring to engage a spline groove of a tubular component. The spline can include one or more of the following features: a seal mounted to the distal end of the ring; the seal mounted to the ring axially distal of the spline; the seal mounted to the ring radially outward of the spline relative to the axis; and the seal mounted to the ring, the seal having a seal groove extending in a distal direction, and a portion of the ring is located in the seal groove.