| 主权项 |
1. A roller unit for a sliding door comprising:
a connector assembly adapted to be secured to a sliding door, the connector assembly comprising a spindle, a wheel mounted to the spindle of the connector assembly for rotation about the spindle, a circumferential groove defined in the wheel and configured for receiving an upwardly-facing edge portion of a transom, and a tab projecting from the connector assembly, the tab having an upwardly-facing surface adapted to be positioned under and vertically aligned with a downwardly-facing surface of the transom, a gap between the upwardly-facing surface and the downwardly-facing surface being equal or less than a depth of the circumferential groove; whereby the roller unit holds the sliding door captive vertically on the transom while permitting translational movement of the door by rotation of the wheel about the spindle along the transom. |
