Abstract: A vehicle track play set includes a base, a plate coupled to and extending upwardly from the base, and first and second tracks extending along the plate toward the base. The first track includes a first curved portion extending outwardly from a first surface of the plate and a second curved portion extending outwardly from an opposite second surface of the plate. The first track extends through a first opening in the plate between the first and second curved portions. The second track includes a third curved portion extending outwardly from the second surface and a fourth curved portion extending outwardly from the first surface. The second track extends through a second opening in the plate between the third and fourth curved portions.

Abstract: A vehicle track play set includes a base, a plate coupled to and extending upwardly from the base, and first and second tracks extending along the plate toward the base. The first track includes a first curved portion extending outwardly from a first surface of the plate and a second curved portion extending outwardly from an opposite second surface of the plate. The first track extends through a first opening in the plate between the first and second curved portions. The second track includes a third curved portion extending outwardly from the second surface and a fourth curved portion extending outwardly from the first surface. The second track extends through a second opening in the plate between the third and fourth curved portions.

Abstract: A track assembly for toy vehicles includes a base, a concave track section coupled to the base, and an outer track section coupled to the base. The concave track section is rotatable about an axis relative to the base. The outer track section extends around at least a portion of a perimeter of the concave track section. The outer track section has an inlet through which a toy vehicle can travel and an outlet through which a toy vehicle can travel.

Abstract: A vehicle track play set includes a base, a plate coupled to and extending upwardly from the base, and first and second tracks extending along the plate toward the base. The first track includes a first curved portion extending outwardly from a first surface of the plate and a second curved portion extending outwardly from an opposite second surface of the plate. The first track extends through a first opening in the plate between the first and second curved portions. The second track includes a third curved portion extending outwardly from the second surface and a fourth curved portion extending outwardly from the first surface. The second track extends through a second opening in the plate between the third and fourth curved portions.

Abstract: A racing play set for toy vehicles includes a first track segment, a second track segment disposed in intersection with the first track segment, a return portion disposed in communication with the first and second track portions, and a scoring mechanism, where the return portion is configured to be shared by toy vehicles traveling on the first and second track segments, where the return portion is configured to receive a first toy vehicle from the first track segment and return the first vehicle to the first track segment, where the return portion is configured to receive a second toy vehicle from the second track segment and return the second vehicle to the second track segment, where the scoring mechanism is configured to record a pass of the first vehicle through the return portion and a pass of the second vehicle through the return portion.

Abstract: A toy vehicle track set. The track set includes toy roads sized for toy vehicles. The track set allows a toy vehicle to be raised and lowered to different elevations using one or more different mechanisms.

Abstract: A toy play set includes a body having opposing ends and a side wall therebetween, which define and generally surround an at least partially hollow cavity within the body in a closed configuration of the body. At least the one end is sized and shaped to fit at least partially into a beverage cup holder of a vehicle sufficiently for the cup holder to support the body in a generally upright orientation. The body has an open configuration in which the hollow cavity is at least partially accessible. A toy vehicle track as long or longer than the length of the body between the ends is configured for storage within the cavity of the body in the closed configuration and is engaged with the body for play in the open configuration.

Abstract: In a radio-frequency radar system, a radar antenna (12) irradiates a region to be monitored, and antenna elements (14a-p) arrayed irregularly about a mobile platform (10) receive the resultant echo signal, which mixers (18 and 21) translate in frequency, coherently with the transmitted signal, to a lower frequency, at which a sample-and-hold circuit (24) can sample it. A beam-forming operation is performed on the sample signals by employing coefficients that have been computed from calibration readings taken by the elements mounted on the platform. The beam signals resulting from numerous successive transmitted pulses are then integrated coherently to produce an output.