Abstract: A scissors lift apparatus having a wheeled tube chassis and a platform connected together by one or more scissors arm assemblies, each scissors arm assembly including a center arm and two outside support arms pivotally connected at their longitudinal midpoint, adjacent scissors arm assemblies connected in series at the ends of the center arms and at the ends of the outside support arms, a hydraulic cylinder pivotally connected to the chassis and pivotally connected to the pivot axis of the lowermost scissors arm assembly, the pivot connection between adjacent outside support arms comprising common castings, each casting having a pair of longitudinally extending, longitudinally offset ears, the ears of one casting engaged and pinned with the ears of a second axially rotated casting.

Abstract: An extensible boom assembly which has a tubular outer section, a tubular intermediate section and a tubular inner section supported in a telescoping relationship, and containing a flexible power conducting line which extends through the assembly from adjacent the forward end thereof to adjacent the rearward end thereof. An articulated, hollow link track member which is supported within the boom assembly and which has one end portion doubled-back upon itself, receives and protects the power conducting line from damage during the relative movement of the several boom sections.