The invention relates to a device for connecting pipe ends (80, 82) of double-walled pipes (72, 74) for angular compensation and for length compensation of the relative movements of the double-walled pipes (72, 74) relative to a double-walled connector (10). On the double-walled connector (10), there are arranged concentrically with respect to one another first and second ball heads (20, 26). These are each sealingly engaged over by ball cages (52, 54). The ball cages (52, 54) are formed on double-walled attachments (46) of the double-walled pipe ends (80, 82). The sealing function for double-walled angular compensation and double-walled length compensation are configured so as to be decoupled from one another, and are therefore optimized, in the case of the device proposed according to the invention.

The invention relates to a device for connecting pipe ends (80, 82) of double-walled pipes (72, 74) for angular compensation and for length compensation of the relative movements of the double-walled pipes (72, 74) relative to a double-walled connector (10). On the double-walled connector (10), there are arranged concentrically with respect to one another first and second ball heads (20, 26). These are each sealingly engaged over by ball cages (52, 54). The ball cages (52, 54) are formed on double-walled attachments (46) of the double-walled pipe ends (80, 82). The sealing function for double-walled angular compensation and double-walled length compensation are configured so as to be decoupled from one another, and are therefore optimized, in the case of the device proposed according to the invention.

A tube coupling for coupling a first tube and a second tube includes an inner shroud located circumferentially around a first tube distal end at an inner shroud distal end, the inner shroud distal end having one or more radial teeth, an outer shroud having a first outer shroud distal end and a second outer shroud distal end, the first outer shroud distal end located circumferentially around a second tube distal end and the second outer shroud distal end located circumferentially around the inner shroud distal end, and a band configured to elastically compress the first outer shroud distal end onto the inner shroud distal end. The band elastically compresses the first outer shroud distal end and the inner shroud distal end such that the one or more radial teeth are swaged into an outer surface of the first tube.

A tube coupling for coupling a first tube and a second tube includes an inner shroud located circumferentially around a first tube distal end at an inner shroud distal end, the inner shroud distal end having one or more radial teeth, an outer shroud having a first outer shroud distal end and a second outer shroud distal end, the first outer shroud distal end located circumferentially around a second tube distal end and the second outer shroud distal end located circumferentially around the inner shroud distal end, and a band configured to elastically compress the first outer shroud distal end onto the inner shroud distal end. The band elastically compresses the first outer shroud distal end and the inner shroud distal end such that the one or more radial teeth are swaged into an outer surface of the first tube.

An elbow assembly for a patient interface includes a swivel component adapted to connect to a patient interface and an elbow component adapted to connect to an air circuit. The swivel component is coupled to the elbow component by a ball and socket joint and a hinge joint which allows the elbow component to pivot relative to the swivel component about a single axis.

A bathtub drain connection system includes a first drain pipe configured to couple to a drain opening of a bathtub and a second drain pipe configured to mount to a floor structure. A drain connector is extends between the first drain pipe and the second drain pipe so that the first drain pipe and the second drain pipe are coupled in fluid communication. The drain connector is configured to allow the first drain pipe to be disposed offset relative to the second drain pipe and in a direction that is substantially parallel to a plane defined by the floor structure.

A bathtub drain connection system includes a first drain pipe configured to couple to a drain opening of a bathtub and a second drain pipe configured to mount to a floor structure. A drain connector is extends between the first drain pipe and the second drain pipe so that the first drain pipe and the second drain pipe are coupled in fluid communication. The drain connector is configured to allow the first drain pipe to be disposed offset relative to the second drain pipe and in a direction that is substantially parallel to a plane defined by the floor structure.

A piston (1) having a piston shaft (2), a ball head (3) at one end of the piston shaft (2), and a slider shoe (4) mounted to the ball head (3), wherein the ball head (3) has a through channel (5), the slider shoe (4) has a sliding surface (6) and a through hole (7) in communication with an end of the through channel (5), and a plastic material (8) is arranged in a gap between the slider shoe (4) and the ball head (3) and forms an inner coating (9) of the through hole (7). The production of such a piston should be facilitated. To this end a sealing surface (14) is arranged at the end of the through channel (5) wherein the sealing surface (14) surrounds the opening of the through channel (5) into the through bore (7) and an inner diameter of the sealing surface (14) is smaller than an inner diameter of the inner coating (9) of the through bore (7).

A piston (1) having a piston shaft (2), a ball head (3) at one end of the piston shaft (2), and a slider shoe (4) mounted to the ball head (3), wherein the ball head (3) has a through channel (5), the slider shoe (4) has a sliding surface (6) and a through hole (7) in communication with an end of the through channel (5), and a plastic material (8) is arranged in a gap between the slider shoe (4) and the ball head (3) and forms an inner coating (9) of the through hole (7). The production of such a piston should be facilitated. To this end a sealing surface (14) is arranged at the end of the through channel (5) wherein the sealing surface (14) surrounds the opening of the through channel (5) into the through bore (7) and an inner diameter of the sealing surface (14) is smaller than an inner diameter of the inner coating (9) of the through bore (7).

A slip-on adapter that is adapted to be coupled to existing adapters that have already been developed. The slip-on adapter couples to existing adapters by positive retention on either the outside diameter or inside diameter of the existing adapter. For example, the slip-on adapter can include an O-ring that grips the outside diameter of the existing adapter that it is slipped onto. The slip-on adapter can also be used as a “flip adapter” with different geometries at both ends for use with two different size ball joints. This allows for less expensive adapters for new size ball joints by connecting to existing adapters, rather than requiring full machining of a new adapter.