Annular support device with pivotal segments

Annular support device with pivotal segments

Assembly toys for joining cylindrical objects

Block unit for making three-dimensional blocks composed of geome

Building blocks

Cardan joint for a toy building set

Chain drive for construction toy system

Child's playset

Connectble polygonal construction modules

Connecting means for a toy building set

Connection for beads with locked and articulating engagement

Connection for beads with locked and articulating engagement

Construction apparatus

Construction toy set of planar blocks with apertures and hinged

Constructional building set comprising gear box casings

Constructional element for decorative purposes and toys

Coupling device for polygonal elements designed to form spatial

Elements of a construction or assembly set, and accessories

Entertainment device

Flexible joint construction toy