Modular Stairs

Abstract

A modular adjustable stairway that is comprised of two or more stair segments and that may be configured to have various slopes depending on the desired location of installation.

What is claimed is: 
     
         1 : A modular adjustable stairway comprising:
 two or more stair segments, the stair segments including a first stringer and a second stringer;   the first stringer and the second stringer configured to be coupled to either side of one or more steps;   the first stringer and second stringer having open ends into which a splice bar is insertable, the splice bar adapted to connect the first stringer and the second stringer of one of the two or more stair segments to the first stringer and the second stringer of another stair segment from the two or more stair segments.   
     
     
         2 : The modular adjustable stairway of  claim 1 , the first stringer and second stringer each including an upper stringer extrusion and a lower stringer extrusion. 
     
     
         3 : The modular adjustable stairway of  claim 2 , each of the upper stringer extrusions and the lower stringer extrusions approximately in the shape or a rectangular prism or cuboid, and including two ends that are open, an inner side, an outer side, a top side and a bottom side, the inner side and the outer side each having a plurality of openings that are configured to facilitate a connection to the one or more steps. 
     
     
         4 : The modular adjustable stairway of  claim 3 , the one or more steps each having a first side and a second side, and wherein each of the first side and the second side include threaded rods that extend out and away from the step and that are configured to extend through the openings of the inner side and the outer side of a respective stringer. 
     
     
         5 : The modular adjustable stairway of  claim 4  wherein the threaded rods are welded to the steps. 
     
     
         6 : The modular adjustable stairway of  claim 2 , the modular adjustable stairway further including an upper end and lower end, and wherein each of the upper end and the lower end include support posts. 
     
     
         7 : The modular adjustable stairway of  claim 6 , the support posts further including a bracket that connects to the upper stringer extrusion and the lower stringer extrusion, a socket that connects to the bracket, and a post that extends through the bracket and supports the modular adjustable stairway above a surface. 
     
     
         8 : The modular adjustable stairway of  claim 7 , wherein the support posts are configured to be secured at different elevations and where the different elevations result in the modular adjustable stairway having a different slope.