Patent ID: 8616518
Filing Date: 2013-12-31
Classification: B28B,E04G

Abstract:
1. A stairway forming system comprising a plurality of stacked, elongate stair riser form carriers, each riser form carrier having a longitudinal axis, the riser form carriers being displaceable relative to one another in a direction parallel to the longitudinal axes; an anchoring unit for anchoring at least a lowermost riser form carrier of the plurality of rise form carriers in position relative to a substrate; a positioning assembly which is attached to at least one of the riser form carriers and which cooperates with the remaining riser form carriers for displacing the riser form carriers, above the lowermost riser form carrier, in unison relative to one another so that the riser form carriers adopt a staggered operative configuration approximating an angle of a stairway to be formed; and a movement limiting arrangement carried by at least one of the riser form carriers for limiting travel of the positioning assembly when it is displaced to an operative position, the movement limiting arrangement being adjustable for adjusting a limit of travel of the positioning assembly to enable stairways of differing angles to be formed.