A fluidic connection assembly and methods for quickly connecting or disconnecting a tube to a port by hand and without the use of tools. A body is adapted to receive a tube therethrough, and may have at least two sides which are hinged. Each of the hinged sides has corresponding latching portions or projections located near a lower end of the body. These projections are adapted to fit into a port or other fitting and be securely held in place. The assembly may include a tube extending through a body and through a spring located between the end of the body and the end of the tube, whereby the spring exerts a force directly or indirectly against the end of the tube and against the body, thus holding the tubing securely and sealingly engaged in the port when the assembly is connected. The body may further comprise an additional body or an adapter, and/or a cap and latch. A second spring may be used to push a projecting member into a groove or notch of an adapter when an end of the adapter is inserted into one end of the latch or the body. The fluidic connection assembly is useful in analytical instrument systems, such as for in vitro applications and/or in high pressure applications, among other things, and may be used in methods for connecting, or disconnecting, tubing or a fluidic connection assembly from a port or other fitting or connection.

A pipe joint includes a hollow joint main body; a nut that is screwed into the joint main body; a seal member that is mounted to inside of the joint main body; and a retainer that is placed between the joint main body and the nut and comprises a pawl portion engaged with a trough of a metal flexible pipe in a coupled state and a retainer locking portion caught and locked inside of the joint main body in the coupled state.

A tube coupling system serves for providing annular flow through a flexible annular double lumen tube between fluid reservoir(s) and flexible connection pieces of an annular double lumen device. The tube coupling system has a first coupling component and a second coupling component and an end fitting system. The first coupling component that has a female coupling part and a male coupling part adapted for coupling to a proximal end of the flexible annular double lumen tube. The second coupling component has a second interior pipe that axially extends inside a second exterior pipe, a first end fitting adapted for coupling to at least the female coupling part of the first coupling component, and a second end fitting adapted for coupling to any of the flexible annular double lumen tube or the flexible connection pieces of an annular double lumen device.

A coupling device for a tubular element comprises a hollow body having a housing, a cartridge locked in the housing in a first position, the cartridge then protruding from the hollow body, the cartridge having an outer wall and an inner wall delimiting an inner channel, the inner channel having a first end forming an inlet for receiving the tubular element and a second end provided with an obstacle, an annular seal and a fastening ring disposed in the inner channel in order to secure the tubular element in the inner channel in sealed manner. The coupling device comprises an unlocking system configured to allow, when the tubular element exerts a force against the obstacle, the unlocking of the cartridge and its movement to a second position, in which the cartridge is entirely incorporated in the hollow body.

A coupling assembly includes: a tubular compression collar having a tubular body made of a resiliently flexible polymeric material and having an interior surface and an opposing exterior surface; an end of a tube disposed within a throughway of the compression collar; and a tube fitting disposed within the passageway of the tube. The tube fitting includes: a tubular stem; a flange radially outwardly projecting from an exterior surface of the stem; and an annular barb encircling and radially outwardly projecting from the exterior surface of the stem, the annular barb including a frustoconical outside face that extends along and outwardly slopes away from the stem as the outside face extends toward the flange. The compression collar radially inwardly compresses the tube against the annular barb of the tube fitting so that a liquid tight seal is formed between the tube and the tube fitting.

A method for coupling a tube to a tube fitting includes radially outwardly expanding a tubular compression collar from a constricted state to an expanded state, the compression collar having a throughway extending there through and being made of a resiliently flexible material. An end of the tube is inserted within the throughway of the expanded compression collar, the tube bounding a passage. A tube fitting is inserted within the passage of the tube. The compression collar is allowed to resiliently rebound back towards the constricted state so that the compression collar pushes the tube against the tube fitting.

A coupling assembly includes: a tubular compression collar having a tubular body made of a resiliently flexible polymeric material and having an interior surface and an opposing exterior surface; an end of a tube disposed within a throughway of the compression collar; and a tube fitting disposed within the passageway of the tube. The tube fitting includes: a tubular stem; a flange radially outwardly projecting from an exterior surface of the stem; and an annular barb encircling and radially outwardly projecting from the exterior surface of the stem, the annular barb including a frustoconical outside face that extends along and outwardly slopes away from the stem as the outside face extends toward the flange. The compression collar radially inwardly compresses the tube against the annular barb of the tube fitting so that a liquid tight seal is formed between the tube and the tube fitting.

A method for coupling a tube to a tube fitting includes radially outwardly expanding a tubular compression collar from a constricted state to an expanded state, the compression collar having a throughway extending there through and being made of a resiliently flexible material. An end of the tube is inserted within the throughway of the expanded compression collar, the tube bounding a passageway. A tube fitting is inserted within the passageway of the tube. The compression collar is allowed to resiliently rebound back towards the constricted state so that the compression collar pushes the tube against the tube fitting.

A fuel connector of a fuel system is adapted to flow fuel, and includes male and female components. The male component includes a plurality of barbs each projecting radially outward, spaced axially from one-another and being circumferentially continuous. The female component includes a plurality of reinforcement rings being in a predefined axial relationship to the respective plurality of barbs when connected.

A collar for connecting ducting components is provided. The collar includes a tubular wall having a line end and a free end, an annular flange extending radially outwardly from the line end, and a plurality of retaining tabs extending outwardly from the free end. A plurality of locking members are provided at the line end. The locking members are configured to releasably secure the flange to an adjacent member.