US Patent 10307685 Assembly-toy-chassis building element

An assembly-toy chassis building element for a toy vehicle is configured for being non-rotatably connected to another chassis element of the toy vehicle. The chassis element has a top side, two side walls, two end walls and compatible coupling components disposed at opposite ends of the chassis element for enabling the chassis element to be rotatably coupled to another such chassis element. The top side and/or at least one end wall of each chassis element is disposed and configured for connection to an intermediate building element that is adapted, either alone or in combination with at least one other intermediate building element, to effect a non-rotatable end-to-end connection with another such chassis element.