发明授权
US5353892A Ladder joint for a folding collapsible ladder 失效
折叠梯子的梯子关节

Ladder joint for a folding collapsible ladder
摘要:
A ladder joint includes a pivot, a first base plate mounted on the pivot and connected to a first side rail section of one side rail of a ladder, a second base plate mounted on the pivot and connected to a second side rail section of the side rail, a spring-supported lever pivoted to the pivot, a lock bolt inserted through an eccentric hole on the second base plate and controlled by the lever to engage into either of a series of eccentric holes on the first base plate.
公开/授权文献
信息查询
0/0