Modular stairway system for installation on structures having non-linear walls
First Claim
1. A modular stairway system for structures having non-linear walls comprising:
- a plurality of first stringer means each having first connecting means integral therewith at opposite ends thereof for joining the first stringers;
a plurality of second stringer means horizontally spaced from and substantially parallel to the first stringer means each having adjustable second connecting means integral therewith at opposite ends thereof for adjustably joining the second stringers such that the combination of first and second stringers conform to the curvature of the structure;
a plurality of stairs horizontally interposed between the first and second stringers;
mounting means for securing the first and second stringers to the structure;
whereby the stairway system may be easily installed on structures having non-linear walls.
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Abstract
This application discloses a modular stairway system for circular structures or other structures having non-linear walls. The invention comprises a plurality of first stringer means with a plurality of first connecting means integral to said first stringer means for joining the first stringers, a plurality of second stringer means horizontally spaced from and parallel to the first stringer means with a plurality of adjustable second connecting means integral to said second stringer means for adjustably joining the second stringers such that the first and second stringers conform to the curvature of the structure. A plurality of stairs are horizontally interposed between the first and second stringers, and a stair mounting means for securing the stairs to the first and second stringers are provided. Also provided are mounting means securing the first stringers to the structure and for supporting the second stringer to the structure, whereby there is obtained a reversible sectional stairway system which can be easily installed on circular structures or other structures having non-linear walls.
33 Citations
7 Claims
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1. A modular stairway system for structures having non-linear walls comprising:
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a plurality of first stringer means each having first connecting means integral therewith at opposite ends thereof for joining the first stringers; a plurality of second stringer means horizontally spaced from and substantially parallel to the first stringer means each having adjustable second connecting means integral therewith at opposite ends thereof for adjustably joining the second stringers such that the combination of first and second stringers conform to the curvature of the structure; a plurality of stairs horizontally interposed between the first and second stringers; mounting means for securing the first and second stringers to the structure; whereby the stairway system may be easily installed on structures having non-linear walls. - View Dependent Claims (2, 3, 5, 6, 7)
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4. An apparatus, as claimed in claim 4, wherein spacing of the spaced holes conform to the normal bolt spacing on standardized structures having non-linear walls.
Specification