| 摘要 |
The invention contemplates roof-rack structure comprising (a) an elongate bar of constant external section profile, and (b) two pad-mounted pedestal supports having provision for inserted through-reception of the respective ends of the bar. Each pedestal support includes its own selectively available one-way-engaging clutch action whereby end-inserted displacement of the bar is freely accommodated, and whereby inserted-bar retraction is foreclosed. Each pedestal support also includes its own jack-actuated clamp for secure lateral anchorage to a roof or window edge. Further, a single manual control serves to operate both the clutch action and the lateral clamp, and the manual control is key-lockable when the conditions of bar-clutched engagement and lateral-clamp setting have both been established. The single manual control is subsequently operable, once unlocked, to release both the lateral clamp and the clutched engagement, thus permitting easy and fast disassembly.
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