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US 4,216,933 AGranted
Portable scaffold support base
OwnerMilton A. Cramer, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A portable scaffold support base is disclosed which can be transported from one use site to another by a fork lift or the like. When it is delivered to the use site, the base is oriented horizontal by adjusting vertical supporting legs which are initially located over the best available surface by an outrigger extending from the base.
Claims5
A portable scaffold support base comprising,
- a rigid rectangular frame,
- a pair of tubular cross bars rigidly attached to said frame in parallel and spaced relation, said tubular cross bars being open at one end to receive a fork lift,
- tubular outrigger collars disposed at each corner of said frame,
- outrigger members slidable in said collars and adapted to be adjustable to form horizontally disposed extensions from said frame,
- vertically disposed sleeves mounted on the outer ends of said outrigger members,
- vertically disposed support legs slidably received in said sleeves,
- means for locking said support legs in selected position in said sleeves,
- and means for attaching a scaffold mounted on said frame, whereby said frame may be supported in a horizontal plane with said outrigger members extended horizontally selected distances and said support legs extended vertically selected distances to provide support on the best available surface.
5 more elements
Dependencies are inferred from the claim text.