US Patent 7520101 Attachment of building elements

A device for affixing a building element to a supporting element, comprising a guide housing for attachment to the building element or the supporting element. Mounted in the guide housing are at least one movable telescopic member and at least one pull-out cable which is fastened to an attachment point in the telescopic member. The attachment device further comprises at least one return cable fastened to the telescopic member and passed round a winding point to a location for operation of the attachment device or a stop strip for restriction of the extended length of the telescopic member. The attachment device may advantageously be used for affixing concrete elements or affixing staircase elements.