E - Fixed Constructions – 04 – G
Patent
E - Fixed Constructions
04
G
187/1
E04G 1/22 (2006.01) E02F 3/34 (2006.01)
Patent
CA 1068618
ABSTRACT Disclosed is an aerial lift which includes a sub- stantially horizontal supporting means, a pivotable boom having an extensible load end and a pivot end. Means mount the boom to the supporting means so that the boom pivot end is sub- stantially horizontally movable but vertically fixed. A support arm has one end pivotally mounted to the support means and a second end pivotally mounted to the boom and means are provided for raising and lowering the boom so that as the boom load end is elevated, its boom pivot end moves substantially horizontally toward the support arm. Means are provided for automatically extending the extensible load end as the load end is elevated to move the load end along a substantially vertical path during elevation of the boom load end.
290790
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