| 摘要 |
A tracked backboard having a track system hingedly attached and handles for lifting one end of the backboard off of the ground. The track system, when unlocked from the backboard, pivots downward and remains on the terrain so as to provide traction throughout the length of the track. In one embodiment, the system is constructed so as to be long enough to span at least two stair treads to provide smooth transit down stairwells. The track system hinges freely to hug the terrain over which the backboard is traversing. A brake system is provided within the tracking system to slow the descent of the backboard.
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