Abstract: A toy building set comprising one or more first building elements (1) having an integrally shaped body (2) and at least two plane knob surfaces (3) each being provided with at least one knob (4) extending perpendicular from the knob surface (3) and where the integrally shaped body (2) further has at least two plane socket surfaces (6) each being provided with at least one socket (7) each extending into a socket surface (6), and being adapted for frictional interconnection with the knobs on the knob surface on an identical building element, and where the two knob surfaces (3) extends in two mutually parallel and not coinciding planes and that the two socket surfaces (6) also extends in two mutually parallel and not coinciding planes, and in that the distance between the mutually parallel planes comprising the two knob surfaces (3) and the two socket surfaces (6) respectively, are identical, and the mutual position between the two knob surfaces (6) is the same as the corresponding mutual position between the tw

Abstract: The invention provides a respiratory mask comprising a mask body including a base and walls upstanding from the base and converging towards an apical region and a forehead engagement member extending from the apical region of the mask body. The forehead engagement member coupled to the mask body so as to be movable relative to the mask body in a sagittal plane when the mask body is worn by a patient. An adjustment mechanism is provided for adjusting the relative positions of the forehead engagement member and the mask body. In another aspect, the invention also provides a respiratory mask including a mask body including a base and walls upstanding from the base and converging towards an apical region. The body includes a pair of transversely opposite headgear anchors adapted for attachment to headgear that a patient wears during use to secure the mask to the face of a patient.

Abstract: The invention provides a respiratory mask comprising a mask body including a base and walls upstanding from the base and converging towards an apical region and a forehead engagement member extending from the apical region of the mask body. The forehead engagement member coupled to the mask body so as to be movable relative to the mask body in a sagittal plane when the mask body is worn by a patient. An adjustment mechanism is provided for adjusting the relative positions of the forehead engagement member and the mask body. In another aspect, the invention also provides a respiratory mask including a mask body including a base and walls upstanding from the base and converging towards an apical region. The body includes a pair of transversely opposite headgear anchors adapted for attachment to headgear that a patient wears during use to secure the mask to the face of a patient.