초록 ▼

A safety ladder particularly suited for permitting access to the top of a tank having a convex exterior surface is provided. The ladder is designed to provide a safe vertical path between the ground and a flat work platform attached to the ladder at the top of the tank. The safety of the tank ladder

A safety ladder particularly suited for permitting access to the top of a tank having a convex exterior surface is provided. The ladder is designed to provide a safe vertical path between the ground and a flat work platform attached to the ladder at the top of the tank. The safety of the tank ladder is enhanced by providing a pair of smooth, continuous, unbroken vertical handrails spaced outwardly of the ladder along which the tank operator can slide his hands without removing them from the rails from the top to the bottom of the ladder. Safety steps include spaced rung sections secured to vertical supports to define a central opening through which spilled liquids, rain or snow may drop instead of accumulating on the surface of the step as in prior art ladder steps. A central reinforcing bar extends between the rung sections to strengthen the steps. A flat platform is attached to the top of the ladder to form the top step of the ladder and to provide a safe work space at the curved top of the tank. Optional sidewalls and guardrails may be provided to enhance the safety of the platform.

대표청구항 ▼

A safety ladder and work platform for installation on the convex exterior surface of a tank to provide safe access between the ground along the side of the tank and the topmost surface of the tank, wherein said platform is positioned at the topmost surface of said tank and substantially tangent ther

A safety ladder and work platform for installation on the convex exterior surface of a tank to provide safe access between the ground along the side of the tank and the topmost surface of the tank, wherein said platform is positioned at the topmost surface of said tank and substantially tangent thereto to provide a flat work surface and to form the top step of said ladder, said work platform including a floor having openings therein to prevent the accumulation of liquid on said floor and containment means for defining a safe work area when the work platform is installed in place at the topmost surface of the tank, said containment means including a pair of opposed sidewalls located laterally with respect to the ladder and a back wall connecting said opposed side walls located opposite the ladder, and said ladder is secured perpendicularly to said platform to provide a substantially vertical path between the ground and said platform, said ladder including a pair of handrail means extending parallel to and outwardly from said ladder for forming a continuous unbroken handgrip between said platform and the bottom of said ladder, said handrail means extending from the top of said ladder to the back wall of said platform containment means, thereby forming a guardrail between the top of the ladder and the back of the platform.