Spiral staircase kit

Abstract

A spiral staircase kit has only a few different components, including a plurality of step members with step surfaces, donut-shaped end sections and lower support members. The steps are mounted in offset fashion, through a vertically standing support post. Spacer sleeves separate each of the steps, whose lower support members are positioned against the vertical surfaces of the sleeves to maintain the steps in place without the need for nails, bolts, or other connection components. Proper stacking of the sleeves and steps produces a sturdy and safe staircase structure which includes an upper landing member and which also can be interconnected with a handrail of choice.

1 . A spiral staircase kit comprising: 
 An elongated support post;    a plurality of unitary steps, each unitary step comprising a step surface, means for mounting the step substantially around the support post, and support means extending from the step surface to maintain the step surface in a substantially transverse plane in relation to the support post when the step is mounted on the post; and    a plurality of spacer means to be positioned around the support post, one of the plurality of spacer means being located between every other step in the plurality of steps, for supporting to the steps when the steps are mounted around the support post.    
   
   
       2 . The spiral staircase kit as in  claim 1  wherein the means for mounting comprises a step end section with opening means to receive the support post.  
   
   
       3 . The spiral staircase kit as in  claim 1  wherein the support means comprises at least one step support member extending below the step surface.  
   
   
       4 . The spiral staircase kit as in  claim 3  wherein there are two support members.  
   
   
       5 . The spiral staircase kit as in  claim 3  wherein the means for mounting comprises a step end section with opening means for receiving the support post.  
   
   
       6 . The spiral staircase kit as in  claim 1  wherein the plurality of spacer means comprises a plurality of cylindrical sleeves which substantially circumscribe the support post.  
   
   
       7 . The spiral staircase kit as in  claim 6  wherein the means for mounting comprises a step end section with opening means for receiving the support post.  
   
   
       8 . The spiral staircase kit as in  claim 6  wherein the support means comprises at least one step support member extending below the step surface.  
   
   
       9 . The spiral staircase kit as in  claim 8  wherein there are two support members.  
   
   
       10 . The spiral staircase kit as in  claim 2  wherein the plurality of spacer means comprises a plurality of cylindrical sleeve members which substantially circumscribe the support post.  
   
   
       11 . The spiral staircase kit as in  claim 1  further comprising a landing member with means for mounting the landing member substantially around the post.  
   
   
       12 . A spiral staircase comprising: 
 a central, vertically standing elongated support post;    a plurality of unitary steps mounted offset in relation to each other, each unitary step comprising a step surface, means for mounting the step substantially around the support post, and support means extending from the step surface to maintain the step surface in a substantially transverse plane in relation to the support post; and    a plurality of spacer means positioned around the support post, one of the plurality of spacer means located between every other step in the plurality of steps, for providing support to the steps.    
   
   
       13 . The spiral staircase as in  claim 12  wherein the means for mounting comprises a step end section with opening means to receive the support post.  
   
   
       14 . The spiral staircase as in  claim 12  wherein the support means comprises at least one step support member extending below the step surface.  
   
   
       15 . The spiral staircase as in  claim 14  wherein there are two support members.  
   
   
       16 . The spiral staircase as in  claim 14  wherein the means for mounting comprises a step end section with opening means for receiving the support post.  
   
   
       17 . The spiral staircase as in  claim 12  wherein the spacer means comprises a plurality of cylindrical sleeves which substantially circumscribe the support post.  
   
   
       18 . The spiral staircase as in  claim 17  wherein the means for mounting comprises a step end section with opening means for receiving the support post.  
   
   
       19 . The spiral staircase as in  claim 17  wherein the support means comprises at least one step support member extending below the step surface.  
   
   
       20 . The spiral staircase as in  claim 13  wherein the spacer means comprises a plurality of cylindrical sleeve members which substantially circumscribe the support post.  
   
   
       21 . The spiral staircase as in  claim 12  further comprising a landing member with means for mounting the landing member substantially around the post.  
   
   
       22 . The method for constructing a spiral staircase, the method comprising the steps of: 
 providing an elongated support post;    providing a plurality of unitary steps, each step comprising a step surface, a step end section with an opening, and support members extending from the step surface;    providing a plurality of cylindrical sleeves, each sleeve having an opening therethrough;    vertically positioning the support post;    positioning the opening of a first sleeve over the support post;    sliding the first sleeve down the post to the lowermost end of the support post;    positioning the opening of the end section of a first step over the support post;    sliding the first step down the support post;    positioning the first step on the first sleeve such that the step end section and support members of the first step are flush with the sleeve;    positioning the opening of a second sleeve over the support post;    sliding the second sleeve down the post;    positioning the second sleeve on the step end section of the first step such that it is flush with the end section;    positioning the opening of the end section of a second step over the support post;    sliding the second step down the support post;    positioning the second step on the second sleeve such that the end section and support members of the second step are flush with the second sleeve and the second step is offset in relation to the first step; and    continuing in like manner to alternately position the remainder of the plurality of sleeves and the plurality of steps on the support post, offsetting each step in relation to each other in order to form the spiral staircase.    
   
   
       23 . The method as in  claim 22  further comprising the steps of providing a landing member with a through opening, positioning the opening over the support post, and sliding the landing member onto the post.