| 主权项 |
1. In combination with a track assembly having a lower track with a bottom wall and two opposing sidewalls each having an upper edge, the bottom wall and the two sidewalls of the lower track defining a U-shaped lower channel spanning a length of the lower track and defining a center plane, the improvement comprising:
a laser level having a laser level track attachment device coupled thereto and operably configured to emit a laser in a direction away from a laser output of the laser level and in a laser emission plane, the laser level track attachment device including a body with a cantilever member:
projecting in a direction opposite to the direction in which the laser is operably configured to be emitted from the laser level;sized and shaped to be complementarily received within the U-shaped lower channel of the lower track such that the laser emission plane is substantially coplanar with the center plane of the U-shaped lower channel and with a lower surface of the cantilever member interposed between the bottom wall of the lower track and the upper edges of the two sidewalls, the lower surface of the cantilever member opposing an upper surface of the body; andoperably configured to slidably translate within the U-shaped lower channel of the lower track, thereby enabling the laser level to translate along the lower track when the cantilever member is received within the U-shaped lower channel. |
