This invention relates in general to the design of a plurality of longitudinal segments that can be used to build a track on which a marble can roll from beginning to end over a convoluted path.
Devices are known to permit a user to build a convoluted track out of segments which are assembled by the user to provide a path for a marble which path, in large part, is determined by the user. One such known device uses Velcro as a means for attaching the tracks to a background support so that a complex track can be built by the user to permit a marble to roll from an upper end to a lower end of the path built from the segments.
An earlier design provided this complex path type of device except that the tracks or segments are fastened into a predetermined track cut into the background panel on which the operative track is supported. This fixed track design provided no leeway for the user's imagination. The Velcro backed track did permit the user to control the track design and path. In the Velcro type design, adjustments in the path designed by the user are difficult to make because the segments have to be lifted off of the support backing and placed back by fastening the track onto the Velcro backing. This made adjustments difficult and was frustrating for the user in terms of the ability of the user to experiment and to refine a design.
A major purpose of this invention is to provide the user with improved facility in designing a wide variety of pathways for a marble to roll from beginning to end.
Related to this purpose, is the purpose of a design for maintaining the marble on the track and for assuring that the marble leaves each track segment in a predetermined fashion to assure that it can be picked up by or can fall onto an adjacent track segment.
A further purpose of this invention is to provide these improvements in a device that is inexpensive so that it will readily be acceptable as an improved substitute for the presently known devices.
In one embodiment, a series of linear track segments are provided. One subset of these track segments is approximately V-shaped in cross-section. Another subset is approximately U-shaped in cross-section having opposed sidewalls separated by a base wall. In all cases, the walls of each are connected to one another along longitudinal edges thereof
A magnetic tape is attached to the outside surface of one of the walls of each segment so that the segment can be mounted on a ferromagnetic backing such as provided by the door or sidewalls of a refrigerator.
The segment wall that carries the magnetic strip and the adjacent wall of the same segment have an angular relationship that is approximately 80 degrees so that the marble will be biased against the wall having the magnetic strip. Thus the marble will come off of each segment in a predetermined manner so that it will be appropriately caught by a properly placed next segment.
The ends of the segments are normally spaced from one another to provide a path in which the marble traverses the gap between segments.
Deployment of these segments against a vertical ferromagnetic surface, such as the wall of a refrigerator, can provide a convoluted path along which a marble can be rolled from a start point to an end point.
The Figures all relate to the same embodiment.
It might be noted in the
In a presently preferred embodiment, the angle between the wall on which the magnetic tape is mounted and the adjacent wall is 80 degrees in both the V-shaped and U-shaped segments. In the U-shaped segment, the base wall is at approximately 90 degrees to the wall that does not carry the magnetic strip.
The 80 degree relationship between the wall carrying the magnetic tape and the adjacent wall is employed in connection with both V-shaped segments and U-shaped segments. In one embodiment, the walls of the V-shaped segment are approximately ¾ of an inch wide as is the base wall of the U-shaped segment. In the U-shaped segment, the height of the sidewalls and the width of the base wall are each ¾ of an inch. The segments are approximately 1/16 of an inch thick. It should be understood that these dimensions can be varied appreciably and still obtain the results. For example, the segments disclosed are all linear. They could be curved longitudinal segments to provide curved path portions. The segments employed in the embodiments shown have varying lengths from two to ten inches.