Abstract: A toy building element (1) comprising a central portion (2) provided with at least one coupling means (3, 4) arranged axially relative to the central portion (2). Furthermore, the toy building element comprises at least one other coupling means (5, 6) arranged radially relative to the central portion (2), the at least one further coupling means (5, 6) being so arranged that it is able to rotate in excess of 360.degree. about the central portion (2).

Abstract: The invention relates to a toy construction system comprising building elements of a first type having a pair of opposed walls that define a space between said opposed walls, wherein the space has, at the free edges of the opposed walls, an open end and two opposed open sides, and wherein those sides of the walls that face towards the space are provided with protrusions, and building elements of a second type having a coupling head that may, by snap-fit with the protrusions, be received and releasably secured in the space between the walls on a building element of the first type. The toy construction system is characterised in that the protrusions are situated at the free edges of the walls.

Abstract: The present invention relates to a toy construction system comprising building elements of a first type that has a pair of opposed walls that define a space between said opposed walls, wherein those sides of the walls that face towards the space are provided with protruding ribs, and building elements of a second type that have a coupling head which may, by a snap-effect with protruding ribs, be received and releasably secured in the space between the walls on a building element of the first type, wherein said system further comprises building elements of a third type with coupling studs, wherein building elements of the first type or the second type have a cavity for releasably receiving and securing coupling studs on building elements of the third type.

Abstract: A toy building set comprising toy building elements provided with complementary coupling members, said toy building set comprising a first toy building element (1) having a through-going opening (3) and with coupling members (4) arranged in a plane perpendicular to the through-going opening (3), and a second, elongate toy building element (2) having an outer cross section that fits into the cross section of the through-going opening (3) in the first toy building element (1). The second toy building element (2) is provided with coupling members (4), at least at the one end, and securing members are provided for temporarily securing the second toy building element (2) in the first toy building element (1).