| 摘要 |
A ladder or a retrofit kit for a ladder specially designed for a safe ascent onto and descent from a roof top. Two swing arms are mounted on the outside of the ladder rails near the top rung of the ladder. The swing arms are normally in a storage position along side the rails. The arms can be pivoted and locked in an upright or nearly upright position, forming handles to hold as a user walks through the arms and onto the roof. Each arm can have a non-slip grip covering at least half of the arm beginning at it's free end. Additionally, a swing plate is pivotally attached to the top rung. With the top rung just above the level of the roof edge, the plate or step can be pivoted over and onto the roof to create a safe step at the top of the ladder. The swing arms and safety step can be incorporated into a quick and easy to install retrofit kit which could be temporarily or permanently attached to most ladders.
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