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US 2010/0132277 A1Published application
Modular staircase system
OwnerRichard Bushinventor
Life of this patent
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Abstract
A modular staircase system configured to form a curved staircase, support extremely heavy finishing materials, having higher design tolerances, and can be achieved at a relatively moderate cost. A plurality of stair modules are configured to secure to one another to form a complete staircase system, each which has an elaborate stringer of significant strength and moderate weight configurable to create floating staircases at an affordable cost.
Claims32
A stair system comprising:
- a plurality of steps each having a riser portion and a tread portion, each of the steps having a first end and a second end;
- a first stringer secured to the first end of each said step, the first stringer extending generally transverse to each of the steps;
- and
- wherein the first stringer is comprised of frame elements defining stringer spaces therebetween, and further comprises a face flange secured to the frame elements proximate the stringer spaces.
1 more element
Dependencies are inferred from the claim text.