The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 19, 1991
Filed:
Dec. 14, 1989
Artur Schworer, Senden, DE;
PERI GmbH, Weissenhorn, DE;
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.