A metallic-composite joint fitting is provided. The fitting may comprise a composite structure, an integral bearing comprising a first frustoconical portion and a second frustoconical portion each having a complimentary shape to the composite structure, a sleeve comprising a third frustoconical portion coupled to a cylindrical bearing surface of the integral bearing, and a metallic end fitting coupled to the third frustoconical portion, wherein the metallic end fitting comprises a bearing portion contacted with the cylindrical bearing surface.

Disclosed is an invention relating to a connection device which includes: a housing unit having a pipe inserted therein; a fixing unit that is inserted between the pipe and the housing unit by rotation to fix the pipe; and a sealing unit provided between the housing unit and the pipe to seal between the housing unit and the pipe.

A gasket for preventing the separation of a pipe joint formed between plastic pipes such as pipes manufactured from PVC. The invention provides an internally restrained pipe joint including a bell with a substantially V-shaped annular groove. The annular groove includes a front radial wall and a rear radial wall and a gasket seated in the annular groove. The gasket includes an inner radial face, an opening defined by the inner radial face and an outer radial face with a front radial section located adjacent to the front radial wall of the annular groove and a rear radial section located adjacent to the rear radial wall of the annular groove. A plurality of toothed, rigid restraining segments is at least partially embedded in the gasket.

A coupling for attaching to an end of a tube, pipe, conduit or other round solid or hollow section. The coupling includes an inner body and a collar to be provided around the inner body. The inner body has an interior bore passing through at least a portion thereof to receive a tube and the bore has one or more interior annular protuberances extending into the bore. When the collar is provided around the inner body it applies a circumferential compressive force to deform the inner body such that the one or more annular protuberances engage the tube to seal with it.

Component connector for connecting cylindrical components includes an elastic sleeve which surrounds the components, the elastic sleeve can be braced, a radially deformable fixing sleeve is provided which encloses elastic sleeve. Elastic sleeve is braced via radial deformation of fixing sleeve in a perpendicular direction to a longitudinal axis of fixing sleeve, and at least one clamping ring is provided for radially deforming fixing sleeve. Fixing sleeve has a profiled outer wall and clamping ring has an oppositely profiled inner wall so clamping ring can be pushed concentrically onto fixing sleeve in an accurately fitting manner, during a relative rotation of clamping ring, placed in an accurately fitting manner, in a closing direction, the fixing sleeve can be deformed radially inwardly by the surface profiling; and, during a relative rotation of clamping ring counter to the closing direction, the surface profiling prevents any rotation.

A flexible pipe fitting for joining a first length of pipe to a second length of pipe at an arbitrary angle is provided. The apparatus includes a primary fitting having a substantially circular opening at a first end thereof for receiving an end of a first length of pipe, and an enlarged opening at a second end thereof for receiving a first flexible coupling member. The first flexible coupling member includes an outer wall having an outer surface engaging an inner surface of the enlarged opening, and an inner wall having a lower end connected to a lower end of the outer wall. The inner wall further includes a substantially circular opening therein for receiving a second, rigid member. The inner surface of the second, rigid member is configured to receive an end of the second length of pipe. The enlarged opening in the primary fitting is preferably fish-mouth shaped, or alternatively, cone shaped. Adhesive, such as PVC cement may be used to bond the various fittings, and lengths of pipe together to form a sealed joint.

A fitting for a pipe has a cylindrical sleeve and a spigot fitted concentrically within the sleeve. The sleeve is slidable along the spigot in a proximal direction. The sleeve has a gripper ring cavity with a conical bearing surface with a diameter that is smaller at the distal end and a larger at the proximal end. One or more gripper rings fit within the cavity and slidingly engage the bearing surface. The spigot has an outer surface sized to fit within a proximal end of the pipe. The inner surface of the gripper rings and the outer surface of the spigot define an annular space with a first radial width sized to accept insertion of the proximal end of the pipe. When the sleeve is moved with respect to the spigot in the proximal direction toward a sealed position, the rings are inwardly compressed by the bearing surface to grip an outer surface of the pipe. The end of the pipe is drawn into a space between the sleeve and the spigot with radial width smaller than the first radial width.

A method for using a gland assembly includes sliding a gland assembly over an end of a pipe, the pipe defining an outer surface, the gland assembly comprising a gland, a joint restraint assembly, and a gasket, the joint restraint assembly comprising a gripper and a spring, the spring configured to engage the gripper and the gasket; inserting the end of the pipe into a socket of a piping element; fastening the gland to the piping element; disabling a deactivation mechanism of the joint restraint assembly; and engaging the joint restraint assembly with the outer surface of the pipe to prevent removal of the pipe from the piping element.

Embodiments of a retaining ring for a pipe joint assembly comprise a unitary, ring-shaped body having radially inner and outer surfaces and axially inner and outer surfaces, wherein the radially inner surface is provided with a gripping segment comprising one or more fins, with each of the fins extending radially inwardly. Embodiments further include a wing formed therewith, extending radially outwardly from the radial outer surface to the radially outermost surface. In various embodiments, the retaining ring can be split.

Systems, devices and methods for pipe connectors and associated components are disclosed. Features for no hub clamps, for locking mechanisms on no hub clamps, for tools for no hub clamps, and for gaskets are described. The gaskets may be hourglass-shaped or otherwise taper outward near the ends to facilitate assembly onto pipe ends and that compress inward when a clamp is secured over the gasket. The gaskets may reduce in circumference at the gasket ends upon contraction of the gasket by a clamp onto two pipe ends. The gaskets may include collapsible sections that collapse upon contraction of the gasket by a clamp onto two pipe ends. The gaskets may include wedges at the collapsible regions that extend axially and protrude into the channel.