Displaceable platform movable sectionwise on a wall
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United States of America Patent
Stats
-
Mar 19, 1991
Grant Date -
N/A
app pub date -
Dec 14, 1989
filing date -
Dec 14, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A displaceable platform which can be advanced sectionwise on a wall has support shoes (11) which are securable to the wall (12) at specific intervals in the direction of advance, at least two carrier rails (13) which are arranged spaced apart alongside one another and which extend along the wall (12) between at least two support shoes (11) in each case, and at least one displaceable bracket arrangement (14) which is arranged for displacement in the direction of advance and is fixable on at least two adjacent carrier rails (13), with the carrier rail (13) and the displaceable bracket arrangement (14) being alternately displaced upwardly. A linear drive (15) is associated with each carrier rail (13) which advances the displaceable bracket arrangement (14), in the region of the associated carrier rail, in steps (S) which are so small in comparison to the length (L) of a section that non-uniform displacements of adjacent linear drives (15) by one step (S) can still be accommodated by the elasticity of the cooperating components. All linear drives (15) are driven and jointly controlled from a common drive and control apparatus (22), so that a further working step can first be introduced when all the linear drives (15) have completed the preceding working step.
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