A toy vehicle configured for running on rails, the toy vehicle comprises a chassis comprising a first end and a second end, two side faces extending in the longitudinal direction of the toy vehicle, a top portion, at least two axels each comprising two wheels, wherein the chassis comprises at least two flexible flanges being positioned opposite each other on both sides of the chassis on each side faces. Each flexible flange comprising a snap protrusion at the extremity of the flanges, such that the snap protrusions are adapted to slide past an outer surface of a set of rails.

A toy vehicle configured for running on rails, the toy vehicle comprises a chassis comprising a first end and a second end, two side faces extending in the longitudinal direction of the toy vehicle, a top portion, at least two axels each comprising two wheels, wherein the chassis comprises at least two flexible flanges being positioned opposite each other on both sides of the chassis on each side faces. Each flexible flange comprising a snap protrusion at the extremity of the flanges, such that the snap protrusions are adapted to slide past an outer surface of a set of rails.

A rolling vehicle track including a first wall and a second wall each positioned between and connected to a third wall and a fourth wall. The track further includes a bracket having a first bracket portion, a second bracket portion, a third bracket portion, and a fourth bracket portion, the first bracket portion connected to the third wall, and the fourth bracket portion connected to the first wall. The track further includes the first wall, the second wall, the third wall, and the fourth wall defining a first quadrilateral chamber. The track further includes the first bracket portion, the second bracket portion, the third bracket portion, and the first wall defining a second quadrilateral chamber, the first wall, the second wall, the third wall, the fourth wall, and the bracket are interconnected without welding.

Toy vehicle track systems and connectors for those systems are disclosed. The connectors include a central portion, first and second end portions, and first and second side portions. The central portion includes first and second posts, and a third larger post disposed between the first and second posts. In some embodiments, the third post includes a living hinge to allow for increased vertical displacement of the first, second, and/or third posts when a downward force is applied to the third post. In some embodiments, the central portion includes descending and ascending parts to allow for increased vertical displacement of the first, second, and/or third posts when a downward force is applied to the third post. In some embodiments, the connectors include a plurality of bumps to increase frictional engagement between the connector and the track sections.

Toy vehicle track systems and connectors for those systems are disclosed. The connectors include a central portion, first and second end portions, and first and second side portions. The central portion includes first and second posts, and a third larger post disposed between the first and second posts. In some embodiments, the third post includes a living hinge to allow for increased vertical displacement of the first, second, and/or third posts when a downward force is applied to the third post. In some embodiments, the central portion includes descending and ascending parts to allow for increased vertical displacement of the first, second, and/or third posts when a downward force is applied to the third post. In some embodiments, the connectors include a plurality of bumps to increase frictional engagement between the connector and the track sections.

A test track assembly comprising a test track, the test track comprises a support structure and at least one track portion, adapted for testing a spatial structure; the test track assembly comprises at least two different interchangeable track sections, each of the at least two interchangeable track sections comprises an action track portion, each of the action track portions comprise a different geometrical track path, the action track portions adapted to provide geometric challenges to a user who tests a spatial structure on the test track, the support structure comprises a void adapted to accommodate one of the at least two interchangeable track sections in position such that the action track portion is arranged adjacently in continuation to the at least one track portion, the track portions comprises a starting point and a ending point, which are positioned opposed each end of the test track, wherein the test track assembly comprises a toy construction system, the toy construction system comprises several toy construction elements, the toy building elements comprise one or more coupling organs adapted to be interconnected to form a spatial structure, said spatial structure adapted to be tested on said test track.

A track system for a robotic vehicle is described. The track system includes a set of track pieces that each include a set of track coupling components to couple the track pieces in the set of track pieces together to form a track for the robotic vehicle to traverse; and a set of optical markers that each include a first set of marker coupling components, wherein the set of track pieces include a second set of marker coupling components that are complementary to the first set of marker coupling components to couple the set of optical markers to the set of track pieces.

A robotic vehicle for traversing a grooved track is described. The robotic vehicle includes a set of one or more axles; a set of wheels coupled to each axle in the set of one or more axles; one or more motors to rotate the set of one or more axles, including the set of wheels of each axle in the set of axles, to propel the robotic vehicle along the grooved track; and a steering system to manage navigation of the robotic vehicle along the grooved track, wherein the steering system controls rotation of the set of one or more axles along respective pivot points to manage steering of the robotic vehicle.

A vehicle configured to move through a network of interconnected tubes includes a body, a motor, a motorized wheel, a biasing assembly, and a first element. The motorized wheel directly engages an inner surface of the tubes. The biasing assembly causes the motorized wheel to maintain continuous contact with the inner surface of the tubes during operation. A waist of the vehicle is constrained by an inner diameter (D) of the curved tube, a radius of curvature (R) of the curved tube, and a length (L) of the wheelbase of the vehicle. The waist of the body is sized such that the vehicle can freely move within any of the tubes without getting stuck therein.

A vehicle configured to move through a network of interconnected tubes includes a body, a motor, a motorized wheel, a biasing assembly, and a first element. The motorized wheel directly engages an inner surface of the tubes. The biasing assembly causes the motorized wheel to maintain continuous contact with the inner surface of the tubes during operation. A waist of the vehicle is constrained by an inner diameter (D) of the curved tube, a radius of curvature (R) of the curved tube, and a length (L) of the wheelbase of the vehicle. The waist of the body is sized such that the vehicle can freely move within any of the tubes without getting stuck therein.