| 摘要 |
A support bar assembly for a pivot member pivotably supported by a frame serves to substantially fix the pivot member relative to the frame in an open position. The assembly includes a support arm body securable at an end to the frame. A rack arm is securable to the pivot member and is slidably mounted in the support arm body between a closed position and an open position. A cam lock affixed to the support arm body is movable between at least a release position, in which the rack arm is freely slidable in the support arm body, and a lock position, in which the rack arm is substantially fixed in the support arm body.
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