Patent ID: 8622172

Claim:
An apparatus comprising: a first internal vertical member, configured for installation in the interior of a building; a second internal vertical member, configured for installation in the interior of the building; a platform having a working region that may be passed from the interior of a building to the exterior of the building through an opening in the building; a first bracket attached to the platform and configured to removably couple the platform to the first internal vertical member at a first support location on the first internal vertical member, the first bracket comprising a first sleeve sized to slide over the first internal vertical member; a second bracket attached to the platform and configured to removably couple the platform to the second internal vertical member at a second support location on the second internal vertical member, the second bracket comprising a second sleeve sized to slide over the second internal vertical member, and an upper support structure configured to couple the first and second internal vertical members above the first and second support locations, the upper support structure comprising first and second vertical sleeves joined by a cross brace, where the first vertical sleeve is sized to at least partially slide over the first internal vertical member above the first support location and the second vertical sleeve is sized to at least partially slide over the second internal vertical member above the second support location, where, in operation, the platform is cantilevered from the first and second internal vertical members via the first and second brackets, such that support for the platform is provided by the first and second internal vertical members, and wherein the upper support structure is configured to enable the first and second internal vertical members to be fastened to an interior surface of the building.