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US 2004/0070179 A1Published application
Collapsible support structure
OwnerMark E. Miller, Joseph C. Millerinventors
Life of this patent
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Abstract
A collapsible support structure has pairs of leg members (17) pivotally joined intermediate their length in crossed fashion by a connection member (18) that is capable of sliding longitudinally with the pivotal joint as the leg members extend in a scissors—like manner to support an object.
Claims6
A collapsible support structure comprising
- a pair of elongated leg members having opposed ends, the leg members being pivotally joined intermediate their ends in a crossed relationship to one another, and
- a connection member slidable longitudinally relative to each leg member in said crossed relationship extending transversely between them at said pivotal joint whereby the pivotal joint acts as the apex of a triangular geometry with the leg members in a mutual pivotal and sliding scissors-like supporting action.
A collapsible support structure comprising
- an upper frame and a lower frame spaced below the upper frame in substantially underlying relationship, the upper frame adapted to be collapsed onto the lower frame from a sufficient working height at which a task is to be performed using the upper frame for working support when it is raised to its full height above the lower frame,
- first and second pairs of leg members, each having inner and outer telescoping barrels with opposed ends that can be extended or contracted, said pairs of leg members spaced laterally apart and the opposed ends of each leg member being pivotally connected between the upper and lower frames in diagonally crossing relationship, and
- a connection member extending transversely between said pairs of leg members including means for pivotally joining each leg member intermediate its ends in said crossing relationship including means for sliding along the outer barrels during pivoting of the leg members, and means for locking the sliding means and outer barrels, and the inner barrels to the outer barrels at full height of the upper frame.
Dependencies are inferred from the claim text.