A corrugated pipe mounting assembly has a corrugated pipe and a connector. The corrugated pipe has multiple protruding stripes and multiple gaps each formed between adjacent two of the multiple protruding stripes. The connector has a connecting mount, an operating element, and two engaging components. The operating element has a pivot end pivotally connected to the connecting mount and an operating end being opposite to the pivot end. The two engaging components respectively protrude from the connecting mount and the operating element and each have multiple engaging stripes. When the operating element pivots, the operating end is connected to the connecting mount such that the operating element and the connecting mount are sheathed onto an end of the corrugated pipe and each engaging stripe is inserted into a respective gap of the corrugated pipe. Thereby, the corrugated pipe can be stably mounted via the connector only.

A joint unit is provided, including a main body, a bush, which is fastened to the main body in the axial direction and forms with the main body a receiving space intended to receive a connecting piece not forming part of the joint unit, and a retaining unit for interacting with the main body and the connecting piece. The bush and the retaining unit are formed together in one piece. A joint assembly is further provided, including a joint unit and a connecting piece.

A locking sleeve for connection with a valve box assembly of a central vacuum system includes, a first end adapted to couple to a wall of a valve box assembly, a second end opposite the first end, a central vertical axis between the first end and the second end, a first side adapted to be adjacent to a rear wall of a valve box assembly, a second side opposite the first side, a central horizontal axis between the first side and the second side, a slidable locking mechanism moveable in a sliding manner. The slidable locking mechanism is adapted to secure a vacuum hose assembly to the valve box assembly of the central vacuum system.

A hose connector with an adjustment structure to securely connect patient interface components to a machine in Continuous Positive Airway Pressure therapy. The hose connector includes a first connector end to connect an external tubular connector, a second connector end to connect a hose, and a sidewall that encircles and forms the first connector end and the second connector end. The sidewall has an interior and an exterior, with a gripping portion on the exterior. The first connector end, which is configured to connect to the external tubular connector, includes a portion of the sidewall, a chamber that is configured to accommodate the hose connector, an opening, an abutment surface, and a retaining structure. At least one adjustment structure is provided on the opening. Furthermore, the first connector end of the hose connector with the adjustment structure is made of a resilient first material.

A connection device for a pipe with an outer peripheral projection comprises a connection part with a receptacle for inserting a longitudinal portion of the pipe. The portion comprises the projection, therein. A central axis extends in an insertion direction. A peripheral wall extends around the central axis. A base surface is arranged transversely to the central axis for contacting the projection of the pipe or an end of the pipe. A ring element can be introduced into a gap between the peripheral wall and the pipe such that an axial end of the ring element blocks the projection and secures the pipe against moving out of the receptacle. A securing part is assigned to the connection part and has at least one deformable material portion which can be brought into a blocking position by deformation to form a block against the ring element moving out of the receptacle.

A locking sleeve for connection with a valve box assembly of a central vacuum system includes, a first end adapted to couple to a wall of a valve box assembly, a second end opposite the first end, a central vertical axis between the first end and the second end, a first side adapted to be adjacent to a rear wall of a valve box assembly, a second side opposite the first side, a central horizontal axis between the first side and the second side, a slidable locking mechanism moveable in a sliding manner. The slidable locking mechanism is adapted to secure a vacuum hose assembly to the valve box assembly of the central vacuum system.

A connection device for a peripherally ribbed pipe (4), including: a pipe receptacle (1) having a receiving opening for receiving an end of the pipe (4); and a catch element (3) for fastening the pipe (4) in the pipe receptacle (1). The pipe receptacle (1) has a longitudinal center plane (M), which extends through the receiving opening. The catch element (3) has a first point (SI), which allows movement of at least part of the catch element relative to the pipe receptacle (1), and a second point (S2), which is designed to engage in a corrugation trough (41) of the peripherally ribbed pipe (4). At least when the pipe (4) is inserted and fastened, the first point (SI) lies closer to the longitudinal center plane (M) than the second point (S2) does. The connection device allows easy, leaktight, and secure fastening of a pipe.

A valve box assembly of a central vacuum system includes a locking assembly. At least one component of the locking assembly is moveable in a rotational manner or action. Prior to moving the locking assembly to a second locked position, the vacuum hose is moved into the valve box assembly to alter a length of the vacuum hose that extends from the valve box assembly. The length of the vacuum hose that extends from the valve box assembly in the second locked position is shorter than the length of the vacuum hose that extends from the valve box in a first locked position.

A conduit coupler includes a fist region, a second region, and a plurality of clips. The first region has a first peripheral wall defining a first cavity. The second region is secured to the first region and has a second peripheral wall defining a second cavity. The plurality of clips is secured to the second region and extends into to the second cavity from the second peripheral wall at angles relative to the second peripheral wall. The plurality of clips is operable to engage a corrugated conduit to secure the corrugated conduit to the second region within the second cavity.

A conduit coupler includes a first region, a second region, and a plurality of clips. The first region has a first peripheral wall defining a first cavity. The second region is secured to the first region and has a second peripheral wall defining a second cavity. The plurality of clips is secured to the second region and extends into to the second cavity from the second peripheral wall at angles relative to the second peripheral wall. The plurality of clips is operable to engage a corrugated conduit to secure the corrugated conduit to the second region within the second cavity.