Patent ID: 11912544
Assignee: nan
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A device, comprising:
a base assembly including a clamping assembly configured to clamp the base assembly to a parapet wall surrounding a roof of a structure; and
a carriage assembly slidably mounted on the base assembly, the carriage assembly further comprising a pair of parallel guide rails interconnected at opposing ends by cross-members; said carriage assembly including at least one arm including a roller at a distal end attached to a cross-member, said carriage assembly movable between at least one extended position and a medial position, and said at least one roller includes a groove configured to receive a non-integral line for aiding the line over the parapet wall;
the base assembly further comprising a pair of opposing guide rail guide assemblies each having a pair of opposing guide rail guides each having a channel formed therein, and the carriage assembly further comprising a pair of guide rails that are slidingly received in the channels such that the carriage assembly may slidingly move within the channels relative to the base assembly;
each of the guide rail guides further includes a pair of opposing alignment guide rail guides attached thereto and disposed beneath and outwardly therefrom, and each of the alignment guide rail guides include a channel formed therein for slidingly receiving an alignment guide rail therein configured to maintain alignment of the carriage assembly as the carriage assembly slides relative to the base assembly;
wherein in the at least one extended position the at least one arm extends a pre-determined distance over an edge of an outer wall of the structure or the at least one arm extends a pre-determined distance over an inner edge of the parapet wall of the structure over the roof.