Ventilation element with tubular connector for insertion into an opening in a ceiling or a wall

Claim 2

A ventilation element for mounting into an opening in a partition characterized in that said ventilation element comprises a cylindrical connector having wings extending tangentially from its outside surface, and a diffuser having a cylindrical wall telescopically introduced into said connector and interconnected by means of fasteners which are guided in oblique slots in one of said telescoping parts, said slots being inclined towards the zone of introduction in the same circumferential direction as said wings, the cylindrical wall of the diffuser being cut off in axial direction to form a radial opening and being rigidly connected to a cover disc to form a barrier against the radial flow of air beyond said radial opening.

Claim 3

An element according to claim 1 wherein the cylindrical wall near said disc has outwardly extending lips limiting said radial opening and acting as stop means engaging said connector, to limit closing movement of said cover disc.

Claim 4

An element according to claim 2 characterized in that the opening width of said diffuser wall differs in axial direction such that the furthest-inserted inner end of the wall in circumferential direction extends along a greater sector than a middle part, said lips being formed by the free ends of an outer part of said wall extending along a greater sector than said inner end part.

Claim 5

A ventilation element for mounting into an opening in a partition characterized in that said ventilation element comprises a cylindrical connector having stop means for engaging one surface of the partition for limiting axial displacement of said connector through said opening, and flexible wings extending tangentially from its outside surface, said wings having an inclined surface facing said stop means at an angle less than 90° with the axial length of the connector for engaging the opposite surface of the partition affording rotation of said connector in one direction about its axis and resisting rotation of said connector in the opposite direction, and a diffuser having a cylindrical wall telescopically introduced into said connector and interconnected by means of fasteners which are slidable and guided in oblique slots in one of said telescoping parts, said slots being inclined towards the zone of introduction in the same circumferential direction as said wings, whereby rotation of the diffuser in said one direction may rotate the connector, and rotation of the diffuser in said opposite direction affords adjustment of the diffuser axially relative to the connector.

Claim 6

A ventilation element for mounting into an opening in a partition characterized in that said ventilation element comprises a cylindrical connector having stop means for engaging one surface of the partition for limiting axial displacement of said connector through said opening, and flexible wings extending tangentially from its outside surface, said wings having an inclined surface facing said stop means at an angle less than 90° with the axial length of the connector for engaging the opposite surface of the partition affording rotation of said connector in one direction about its axis and resisting rotation of said connector in the opposite direction, and a diffuser having a cylindrical wall telescopically introduced into said connector and interconnected by means of fasteners which are slidable and guided in oblique slots in one of said telescoping parts, said slots being inclined towards the zone of introduction in the same circumferential direction as said wings, whereby rotation of the diffuser in said one direction may rotate the connector, and rotation of the diffuser in said opposite direction affords adjustment of the diffuser axially relative to the connector.

Claim 7

An element according to claim 4 wherein both longitudinal edges of the wings constitute inclined surfaces which converge in the direction extending from the outside surface of said connector.

Claim 8

An element according to claim 4 wherein the slidable fasteners are two diametrically arranged rivets and including, in addition, an adjustable fastener to interlock the connector and the diffuser selectively against said relative axial adjustment.