| 摘要 |
A sliding door assembly comprising a door hanger(120), a hanger sheave (130), an upthrust roller (140) and a track (150), wherein the hanger sheave assembly and the uptrust roller are rotatably mounted on the door hanger. The track provides a first rolling surface (151) for the hanger sheave and a second rolling surface (152A, 152B) for the upthrust roller. The track also preferably captures the upthrust roller thereby preventing the assembly from leaving the track. |
