초록 ▼

This invention relates to apparatus used in supporting safety rails and discloses a system in which a safety rail post support and security device is used in pairs or greater multiples to hold pieces of a safety rail at the edge of an elevated surface and is speedily attached to or detached from the

This invention relates to apparatus used in supporting safety rails and discloses a system in which a safety rail post support and security device is used in pairs or greater multiples to hold pieces of a safety rail at the edge of an elevated surface and is speedily attached to or detached from the three commonly found roof edge structures, that is, roofs that are flat right up to the edge, roofs that have a very low ledge or flashing around the perimeter, and roofs that have a parapet along the edge. Previous systems rely on cantilever weights positioned well in from the edge of the roof, interfering with the work to be done there. The post support and security device has a junction piece comprising four intersecting extruded stabilizer bars perpendicular to each other in one plane and a fifth bar protruding from that plane at ninety degrees. An upright post fits into one of the bars after the junction piece is bolted to a roof or to a wall abutting the edge of a roof, or is clamped to a parapet. The upright post has two brackets, each adapted to hold one or two 10 foot 2 by 4 inch lumber rails. The adaptable safety rail system of the present invention for flat roofs and parapets exceeds typical safety barrier standards for workers on such roofs.

대표청구항 ▼

[ I claim:] [1.] An adaptable safety rail system for flat roofs and parapets, comprising:a) a post support and security junction piece having a pair of opposing stabilizer bars in one plane, a third stabilizer bar joined substantially perpendicular to the opposing stabilizer bars in the same plane,

[ I claim:] [1.] An adaptable safety rail system for flat roofs and parapets, comprising:a) a post support and security junction piece having a pair of opposing stabilizer bars in one plane, a third stabilizer bar joined substantially perpendicular to the opposing stabilizer bars in the same plane, an extension bar joined to the three stabilizer bars substantially perpendicular to the opposing stabilizer bars in the same plane and aligned with the third stabilizer bar, and a protruding bar extending substantially perpendicular from the said plane, the opposing stabilizer bars having holes therein adapted to receive a shaft of a lag bolt whereby the post support and security junction piece can be bolted securely to a roof, wall or other elevated surface;b) a first clamp means mountable on the extension bar and a second, cooperating clamp means mountable on the third stabilizer bar, whereby the junction piece can be clamped onto a parapet;c) an upright post adapted to fit into one of the bars after the junction piece is bolted to a roof or to a wall abutting the edge of a roof, or is clamped to a parapet by the clamping means, the upright post having at least one bracket, adapted to hold one or two rail members;d) post securing means for retaining the upright post in one of the bars;e) rail securing means for retaining a rail member in the bracket; reby the system can be readily attached to and detached from a roof that is flat right up to an edge of the roof, to a wall abutting a roof, or to a parapet along an edge of the roof.