A fluid coupling for fuel lines in motor vehicles, includes a housing having a receptacle for a counterpart, a blocking member in the receptacle and engageable behind a blocking rib of the counterpart to fix the counterpart in the receptacle, and a detection sleeve axially movable in the receptacle, and having a first engagement portion, which engages with the blocking rib to move the detection sleeve axially into a detection position, and at least one second engagement portion arranged behind the first engagement portion and, when the counterpart is pulled out, engages with the blocking rib to move the detection sleeve out of the detection position, into the initial position, and the detection sleeve includes at least one detection portion (64), received within the receptacle in the initial position so the detection portion is not visible from the outside and, in the detection position, visibly protrudes from the receptacle.

The application relates to a coupling element for connecting a first fluid-conducting line to a second fluid-conducting line. Here it is provided that an indicator device is mounted on a latching device and has a retaining element which can be elastically deflected in the radial direction relative to a guide element of the indicator device and which in a latched position engages in the latch receiving area and secures the indicator device in the axial direction by interacting with a main part and in a non-latched position lies outside the latch receiving area and releases the indicator device to move in the axial direction. The invention additionally relates to a coupling assembly.

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 coupling for a nipple is disclosed. The coupling comprises a main body (100); and an opening (110), for a fluid, in the main body (100), the opening (110) being cylindrical. The coupling comprises further a holder (130) arranged in the opening (110) holding a plurality of locking elements (140) for locking the nipple to the coupling, the holder (130) and the plurality of locking elements (140) being separate; and a retaining element (150) retaining the holder (130) in the opening (110), the retaining element (150) engaging the plurality of locking elements (140). A method for assembling such a coupling is disclosed. The method comprises inserting the holder (130) with the locking means (140) into the main body (100); and retaining the holder (130) in the main body (100) with the retaining means (150).

A coupling system, in particular for tubular elements, with a socket element and a plug-in element, wherein a locking element is also provided, wherein the socket element has a tube-like receiving region for receiving the plug-in element, wherein the locking element has a securing element which is supported in the plugging-in direction against a securing mating element of the plug-in element and the locking element is supported with a locking device against a locking mating device on the socket element, and therefore the socket element and the plug-in element are secured axially indirectly via the locking element and thus via the securing element, the securing mating element and the locking device and the locking mating device.

A connecting device for connecting two or more components to one another, includes an inlet section and an outlet section. The inlet section and the outlet section respectively include one or more connectors for each of the two or more components, with one or more passages extending between the inlet section and the outlet section, with the connecting device being of single piece design and being plastic

A coupling assembly having a female quick connector and a male member, wherein the male member has a latching element, a sealing section and a tip, wherein the sealing section is disposed between the latching element and the tip. The quick connector comprises a retainer having at least one retaining element. The male member is in a latching position if the latching element is latched onto the at least one retaining element. The quick connector comprises a verifier which is axially movable along a verification path, wherein the verification path comprises at least one locking position and at least one releasing position. The verifier in the locking position limits a movement of a section of the retainer in radial direction, so that the retainer is not actuatable in the locking position but actuatable in the releasing position of the verifier.

A dialyser connector comprising a main body and a sliding clip. The main body defines a cavity. The main body has a tube end and a dialyser end, with at least one aperture and a pair of ramps provided in a central portion between the tube end and the dialyser end. The sliding clip has a tube end and a dialyser end connected by a spine running along the top of the sliding clip. The sliding clip has a pair of flexible wings extending in an arc from the spine and a pair of arms extending in an arc from the spine, the pair of arms having at least one projection extending radially inward. The dialyser connector has a locked condition in which the at least one projection extends into the cavity of the main body and an unlocked conditions in which the at least one projection is withdrawn from the cavity of the main body, and wherein the at least one projection is biased to locked condition by action of pair of flexible wings on the pair of ramps.

A fitting for use in a manifold or other tubular assembly includes a core and at least one tubular coupling sleeve slidably and sealingly fitted over a distal end of the core to accommodate predetermined tolerances in the relative positions of fluid ports connected with the tubular assembly. Features are provided to limit the range of motion to the predetermined tolerances and to prevent disassembly of the coupling sleeve from the core of the fitting.

A quick connector includes a housing having an insertion recess and a communication hole communicating with the insertion recess and formed in a direction perpendicular to the insertion recess, and a first fixing part having an arrest portion and an insertion guide protruding from the arrest portion in a direction toward an entrance of the insertion recess, wherein the arrest portion is inserted into the communication hole so that a lower end of the arrest portion is disposed in a position corresponding to the insertion recess, the first fixing part being coupled to the housing, so that the quick connector may be applied to a low-pressure side line in a fuel supply line of a vehicle, and since the quick connector has a simple structure, the quick connector may be easily manufactured and may be easily coupled and separated.