Patent ID: 8341821
Filing Date: 2013-01-01
Classification: B21D,B63B,E04F,E04H,Y10T

Abstract:
1. A method for manufacturing a rail, wherein the rail comprises an outer rail, the method comprising: providing a first continuous piece of tubular metal configured to be the outer rail, the first continuous piece of tubular metal having a first end and a second end, the first end comprising a first connecting portion configured to attach the first continuous piece of tubular metal to a platform structure, the second end comprising a second connecting portion configured to attach the first continuous piece of tubular metal to the platform structure, the platform structure being configured to allow a person to walk or stand thereon; cutting out a first portion of the first continuous piece of tubular metal to define a left indentation between a left portion and a middle portion of the first continuous piece of metal; cutting out a second portion of the first continuous piece of metal to define a right indentation between the middle portion and a right portion of the first continuous piece of tubular metal, wherein the left and right indentions are the only indentations in the first continuous piece of tubular metal; folding the left portion with respect to the middle portion at the left indentation; folding the right portion with respect to the middle portion at the right indentation; attaching the first connecting portion to the platform structure at a first location so that the left portion is attached to the platform structure; and attaching the second connecting portion to the platform structure at a second location so that the right portion is attached to the platform structure, wherein the first location is separate from the second location.