Adjustable height load bearing support structure

专利名称：Adjustable height load bearing support

structure

发明人：LAVERN L. WEINSCHENK JR.,JAY R.

MACHAEL

申请号：AU2453497申请日：19970410公开号：AU2453497A公开日：19971107

摘要：A height adjustable load support structure has a base frame and a generallyplanar support surface. Preferably, two extendable vertical support assemblies supportthe surface for vertical movement relative to the base frame. Each support assembly isengaged by a spring biased pivotable arm to counterbalance the weight placed on thesurface. A cam system cooperating between the distal ends of the pivotable arms andthe support assemblies serves to compensate for the changing spring force on the armsby varying the effective moment arms of the arms thereby equalizing the force on eachsupport assembly through its complete range of vertical travel.

申请人：HON INDUSTRIES INC.

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