Abstract: A connecting device for pipes conducting pressure medium, having a sleeve-like insert part which can be inserted in a frictional or form-fitting manner into a connecting opening in a connecting body and surrounding a receiving opening for a pipe to be inserted, a sealing element for producing a seal between the connecting body and the pipe, and a holding element with holding arms which extend radially inwardly into the receiving opening. A release sleeve engages displaceably in the insert part in such a manner that by pushing in the release sleeve, the holding element is deformed elastically for releasing the pipe. The holding element is held by an outer circumferential region in an essentially clearance-free manner axially relative to the insert part, so that elastic deformation takes place in the region of the holding arms when inserting or releasing the pipe.

Abstract: Plug-type connector for compression systems, having a housing part and a plug part. The plug part has a plug shaft that can be hermetically inserted into a receptacle opening of the housing part and releasably arrested by a retainer element. Retainer projections, elastically movable in the radial direction, seat the retainer element in an arrested position between an inner annular shoulder in the receptacle opening and an outer annular shoulder of the plug shaft. The retainer element on the plug shaft is axially displaceable between a safety position in which the retainer projections are blocked, and a release position in which the retainer projections are freed for radial release movement.

Abstract: A plug-in coupling for pressure application systems, including a receiving component, a connector component with a connecting shaft, an expanding cylinder supported on the connecting shaft between a radial step and a limit stop, and a spring unit initially supported on the expanding cylinder. The receiving component defines an opening and has a holding element, which is biased in a closed position and movable to an opened position. The connecting shaft of the connector component can be inserted into the opening of the receiving component along an insertion direction thereby engaging the radial step with the holding element to prevent loosening of the connector component from the receiving component. In this position, the expanding cylinder is located between the spring unit and the limit stop.

Abstract: A plug-in coupling for systems involving pressurized media, where the coupling consists of two connector parts, a housing part (2) and a connector part (4). The connector part (4) can be inserted into a receiving opening (8) of the housing part (2), while it is being sealed, and when it is in a plugged-in condition, it can be locked in place and prevented from being released by means of a locking device (10). The locking device (10) includes a retaining element (12), which is supported on one side of one of the coupling parts, and which retaining element engages—while in the assembled state—a retaining groove (16) of the other coupling part by means of a form-fit or a form- and friction-fit.

Abstract: A plug-in connection for connecting a plug-in part especially one formed by one end of a pipe line consisting of a receiving housing with a plug-in opening for the plug-in part, a circumferential seal for sealing a circular gap between the receiving housing and the inserted plug-in part as well as a valve element, which, when it is disconnected, automatically closes the receiving housing in order to provide run-out protection and which valve element, when it is inserted, is to be opened by means of the plug-in part. The valve element in order to close the receiving housing directly engages the same circumferential seal, which seals the plug-in part.

Abstract: A socketless fitting for releasable connection of a pressurized line. The fitting has a housing body with a receiving opening to insert one end of the line, and an inner sleeve attached in the housing body in an arrangement that extends coaxially within the receiving opening for engagement into the inserted line end. The inner sleeve is fastened in the housing body media-tight around the periphery via connectors and preferably engages in the line media-tight around the periphery. Media-tight outward sealing is accomplished by sealing engagement of the essentially rigidly secured inner sleeve in the line, because the inner sleeve itself is also tightly joined to the housing body.

Abstract: A plug-in coupling for pressurized systems having two coupling components (2, 4), namely a receiving component (2) and a connector component (4). The connecter component (4) includes a connecting shaft (6) which is inserted into a locator opening (8) of the receiving component (2) and is sealed around the perimeter and arrested against loosening by a holding element (20) situated in a recess (22) of the receiving component (2), first in a partially inserted, incompletely sealed, pre-locked position and secondly in a fully inserted, perfectly pressure sealed full lock-in position. The holding element (20) has arresting elements (28, 30) each of which engage behind a locking edge (24) of the connector component (4) when a lock-in connection (28, 24; 30, 24) is formed.

Abstract: A plug-in coupling for pressure application systems, including two coupling components such as a housing component and a connector component. The connector component is sealed insertable into a locating opening of the housing component, and is arrestable against loosening by a locking device. The locking device has an elastically deformable holding element, which is located on the side of one coupling component in such a way that, in the inserted state, it engages behind an arresting step of the other coupling component, locking with positive fit, for arresting said connector component. The holding element is designed ring-shaped and comprises several individual annular segments and one concentric spring lock washer component which presses the annular segments with radially operating spring resistance that each annular segment can move radially against or through the spring resistance of said spring lock washer component during the plugging-in.

Abstract: A plug-in connection (1) for connecting a plug-in part (2)--especially one formed by one end of a pipe line (4)--consisting of a receiving housing (10) with a plug-in opening (12) for the plug-in part (2), a circumferential seal (14) for sealing a circular gap between the receiving housing (10) and the inserted plug-in part (2) as well as a valve element (16), which, when it is disconnected, automatically closes the receiving housing (10) in order to provide run-out protection and which valve element, when it is inserted, is to be opened by means of the plug-in part (2). The valve element (16)--in order to close the receiving housing (10)--directly engages the same circumferential seal (14), which seals the plug-in part (2).

Abstract: A pipe fitting (1) for connecting a metallic pipe line (10), including a pipe union (4), which contains a receiving opening (8) for the pipe line (10), a swivel nut (6), which can be threadedly connected with the pipe union (4), as well as metallic cutting ring (18), which is disposed between the pipe union (4) and the swivel nut (6). The cutting ring (18) with an outer cone (30) acts jointly with an inner cone (28) of the pipe union (4) in such a manner, that, when the swivel nut (6) is tightened, it cuts into the material of the pipe line (10) with at least one cutting edge (32) and generates a form-fitting junction. The cutting ring (18) includes--where it joins an outer cone (30)--an essentially radial contact surface (38) for the purpose of limiting the tightening force, when it comes into contact with a face surface (40) of the pipe union (4).

Abstract: The invention pertains to a plug connection for pressure systems which consists of two coupling parts, namely a receptacle part (2) and a plug part (4). The plug part (4) can be inserted into a receptacle opening (8) of the receptacle part (2) with a plug shaft (6) such that it is circumferentially sealed and blocked from being separated by a locking device (12). The locking device (12) is realized in such a way that a partially plugged prelocking position (FIG. 1b) and an entirely plugged full locking position (FIG. 1a) are ensured. In the prelocking position, an incomplete seal is produced such that a signal, preferably an acoustically perceivable leakage noise, is generated if the plug connection is charged with pressure. A complete, pressure-tight seal is produced in the full locking position.

Abstract: The present invention relates to a pressure medium plug-in connector, consisting of two connector parts, i.e. a housing part (2) and a plug part (4), wherein the plug part (4) with a plug shaft (6), via at least one peripheral seal (10) located in an annular groove (14) of the one connector part (4) and interacting with a peripheral sealing surface (18) of the other connector part (2), can be inserted in a sealed manner into a receiving opening (8) of the housing part (2) and can be secured against release by means of a locking arrangement (12). The locking arrangement (12) is constructed in such a way that a partially plugged, prelocked position and a completely plugged, fully locked position are ensured. In the prelocked position, a seal is present which is so incomplete that, if pressure is applied with a pressure medium, a clearly limited perceptible leak, particularly in the form of an audible leaking sound, occurs.

Abstract: A plug connection for a pressure system comprising a receptacle part and a plug part, the plug part is inserted into the receptacle part and retained therein by a locking device which forms a prelocked, unsealed connection and a locked, sealed connection between the plug part and the receptacle part with a limit stop element which indicates when the locked, sealed connection has been obtained.

Abstract: A retaining element to hold together a multipart preassembled screw connection or the like until the assembly can be further processed or assembled in a later step. The retaining element includes a ring section to be installed on a free part of the multipart connection unit so as to hold together the individual parts of that section, and a handle that extends in an outward radial direction from the ring section. Once the free part of a multipart connection unit is assembled to a mating connection unit, the ring section can be removed by applying a tensile force to the handle in an upward radial direction. The ring section may have a predetermined breaking point so that the ring section becomes severed when sufficient tensile force is applied, whereby the retaining element can be removed without difficulty.

Abstract: A connecting mechanism for connecting at least one plastic pipeline to a mating opening in a unit part. The connecting mechanism has a housing with a plug-in section selectively connectable to a mating opening on the unit part. The housing has a receiver opening for plugging in a pipeline, and a retainer is arranged in the receiver opening to lock onto a pipeline plugged therein. The plug-in section of the housing has at least one radially elastic arm having a locking catch to clamp behind a surface of the unit part, thereby interconnecting the housing with the unit part. When a pipeline is inserted into the receiver opening of the housing, the pipeline coacts with the locking arm or arms to exclude a radial detaching movement of the locking arm, that otherwise would disengage the locking catches from the unit part.

Abstract: The invention pertains to a connection device (1) for the rapid and releasable connection of at least one synthetic pipeline (6), consisting of a housing portion (2) with at least one opening (4) for inserting the pipeline (6), as well as a clamp collar (8), arranged in the opening (4), which interacts with an inner cone (14) of the housing portion (2) via an outer cone (12) for the purpose of securing the pipeline (6). For the purpose of releasing the pipeline (6), the housing portion (2) is in two parts, consisting of a base portion (20) and an insertion portion (22), which is releasably connected with the same. The insertion portion (22) is connected with the base portion (20) via a positive snap connection (24).

Abstract: A connector having a plug part insertable in a sealing and locking manner into a receiver opening of a socket part. An annular retaining element is preassembled into a ring groove of one of the connector parts, prior to insertion. The retaining element is deformable in a radially elastic manner during the insertion process so that the sealing element is pressed into the ring groove, and the retaining element then deforms in an elastic manner into a locking position to engage a ring groove of the other connector part. The retaining element corresponds at least approximately in longitudinal and transverse cross section to the longitudinal and transverse cross sections of the first-mentioned ring groove, at least over two diametrically-opposed regions of the circumference of that ring groove.

Abstract: A hose and pipe coupling is provided having a coupling head and a nozzle which can be inserted into the coupling head, and which is lockable therewith by a locking element. The locking element includes a spring-elastic ring having a slit and onto which are formed two oppositely-directed, arcuate spring arms which surround and embrace the coupling head. The coupling head has a slot-like circumferential opening and an internal annular groove for the partial reception of the spring-elastic ring and the nozzle at its coupling side is also provided with an annular groove for at least at partially receiving the spring-elastic ring in the inserted position of the nozzle. The coupling further includes a protective cap displaceably arranged on the coupling head and over the elastic ring after the nozzle and the coupling head are coupled together.