Patent ID: 9140025
Filing Date: 2015-09-22
Classification: B66F,E04B,E04G

Abstract:
1. A long travel lift system for enabling users to raise a structural cap from a structural bottom for creating a fillable space therebetween, the fillable space for receiving a second, cap-supporting construction intermediate the structural cap and structural bottom, the long travel lift system comprising, in combination: a series of at least four lift apparatuses, each lift apparatus comprising a telescopic tube construction and means for imparting a lift force, said means comprising a series of tension members, each telescopic tube construction comprising an inner tube and an outer tube, each inner tube comprising an upper inner tube end and a lower inner tube end, each outer tube comprising an upper outer tube end, a lower outer tube end, and a lengthwise slot, each lengthwise slot being open at the lower outer tube end and closed at the upper outer tube end at an upper slot terminus, the tension members being coupled to the lower inner tube ends via the lengthwise slots for enabling transmission of lift force to the inner tubes from said means for imparting a lift force via the tension members, each upper inner tube end comprising a beam-receiving lift trough, each beam-receiving lift trough comprising two upwardly extending parallel trough walls and a trough bottom portion, each respective trough bottom portion connecting the parallel walls, the lift apparatuses being positionable inwardly adjacent four structural corners of the structural bottom in inferior adjacency to the structural cap, at least two lift apparatuses being spaced lengthwise in inferior adjacency to each of two parallel cap support beams supporting the structural cap, the means for imparting a lift force being firstly operable to lift the inner tubes relative to the outer tubes for lifting the beam-receiving troughs into engagement with the cap support beams for providing at least four secondary points of structural cap support, the structural cap being separable from the structural bottom and supportable by the secondary points of structural cap support, the means for imparting a lift force being secondly operable to lift the inner tubes relative to the outer tubes for transmitting lift force into the structural cap via the cap support beams for lifting the structural cap to a raised position in superior adjacency the structural bottom, the raised position defining the fillable space intermediate the structural cap and the structural bottom for receiving the second, cap-supporting construction.