Modular staircase system and kit for erecting a staircase

Abstract

The present invention relates to a novel method and modular assembly for producing a staircase. The modular staircase allows one with little to no skill to quickly and easily order and install a modular staircase at reasonable cost with no specialized technical skill necessary.

1 . A premeasured kit of parts for a staircase assembly the parts comprising:
 a) an inner skirt board having a selected number of steps;   b) an outer skirt board having a selected number of steps corresponding to the inner skirt board;   c) a plurality of riser boards corresponding to the number of steps;   d) a plurality of tread boards corresponding to the number of steps;   e) a plurality of tread sub-support plates corresponding to the number of steps;   
     wherein the tread sub-support plate is designed to coordinativly attach the inner skirt board, the outer skirt board, the riser boards and the tread boards and wherein the parts are predrilled with attachment and alignment holes. 
   
   
       2 . A kit of parts according to  claim 1  wherein the staircase is curved. 
   
   
       3 . A kit of parts according to  claim 1  wherein the sub-support plate is pre-attached to the tread. 
   
   
       4 . A kit of parts according to  claim 1  which further comprises a sub-support plate cleat. 
   
   
       5 . A kit of parts according to  claim 5  wherein the tread is made of a material which cannot be screwed or nailed to the tread sub-support plate. 
   
   
       6 . A kit of parts according to  claim 1  wherein at least 2 of the parts are notched to fit together. 
   
   
       7 . A kit of parts according to  claim 5  wherein the riser and the skirt boards are notched to fit together. 
   
   
       8 . A kit of parts according to  claim 1  which further comprises a set of one or two temporary walls for constructing the staircase prior to construction of or attachment to permanent walls. 
   
   
       9 . A method of assembling the kit of parts of  claim 1  comprising attaching the skirt boards and riser boards to the sub-support plate followed attaching the tread to the sub-support plate. 
   
   
       10 . A system for providing a modular staircase assembly comprising:
 a) measuring the space intended for the staircase;   b) manufacturing an inner skirt board, and outer skirt board, treads, risers and tread sub-support plates to construct a staircase to fit the measured space;   c) drilling attachment and alignment holes in the parts of b) such that the parts can be aligned and coordinativly attached to the tread sub-support plates to form the staircase.   
   
   
       11 . A system according to  claim 10  wherein there is also provided one or more support cleats. 
   
   
       12 . A system according to  claim 10  wherein the sub-support plate is pre-attached to the tread. 
   
   
       13 . A system according to  claim 10  wherein at least 2 of the parts are notched to fit together. 
   
   
       14 . A system according to  claim 10  comprising attaching the skirt boards and riser boards to the sub-support plate followed by attaching the tread to the sub-support plate. 
   
   
       15 . A system according to  claim 10  wherein the tread is made of a material which cannot be nailed or screwed to the tread sub-support plate. 
   
   
       16 . A system according to  claim 10  wherein the staircase is assembled by attaching the staircase to one or two temporary walls.