초록 ▼

The invention disclosed herein relates to a portable roof scaffold system comprising a combination transport/hook/standoff device, a fixed-direction ladder platform, a fixed-direction roof-ladder standoff, a multi-direction ladder platform, a multi-direction roof-ladder standoff, and one or more lad

The invention disclosed herein relates to a portable roof scaffold system comprising a combination transport/hook/standoff device, a fixed-direction ladder platform, a fixed-direction roof-ladder standoff, a multi-direction ladder platform, a multi-direction roof-ladder standoff, and one or more ladders. The combined use of these devices create an easily handled, easily set-up, scaffold which is supported above the roof surface, or the skeletal framework of a roof. The ladder platforms may be positioned at a predetermined angle with respect to the ladder to form a level working platform on any roof slope, and may be slid along the ladder to raise or lower the working level on the roof even while remaining parallel to the angles of hips and valleys in the roof frame. Self-locking features of the ladder platforms make them easy and safe to relocate as work progresses.

대표청구항 ▼

Ladder apparatus for use on a sloped roof structure, the ladder apparatus comprising: a ladder including a pair of generally parallel, longitudinally extending side rails interconnected by longitudinally spaced rungs, the ladder having first and second ends; a first standoff including a ladder mount

Ladder apparatus for use on a sloped roof structure, the ladder apparatus comprising: a ladder including a pair of generally parallel, longitudinally extending side rails interconnected by longitudinally spaced rungs, the ladder having first and second ends; a first standoff including a ladder mount portion mounting the first standoff on the ladder at a location closer to the first end than the second end of the ladder, and support means spaced from the ladder mount portion and capable of engaging the sloped roof structure at a distance from the ladder; a second standoff including a ladder mount portion mounting the second standoff on the ladder at a location spaced from the first standoff toward the second end of the ladder, and support means disposed for engaging the sloped roof structure a substantial distance from the ladder; the first and second standoffs being arranged on the ladder for cooperating to support the ladder on the sloped roof structure at a location spaced generally above the sloped roof structure; said support means of the first and second standoffs each comprising a support bar extending laterally outwardly from the standoff for engagement with spaced apart rafters of the sloped roof structure for supporting the ladder between the rafters; the first standoff further including a securement portion constructed for securing the ladder on the sloped roof structure, and wherein the ladder mount portion of the first standoff mounts the first standoff for pivoting with respect to the ladder generally about the ladder mount portion between a first position in which the securement portion of the first standoff is out of position for engaging the sloped roof structure to secure the ladder and a second position in which the securement portion is in position for engaging the sloped roof structure to secure the ladder on the sloped roof structure.