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US 2016/0369514 A1Published application
Open stair case with center uncut stringer
OwnerDean G. Grommetinventor
Life of this patent
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Abstract
An open staircase is provided comprising a flight of stair treads and an uncut stringer. The treads have free opposing ends positioned on the stringer in a stepped apart relationship relative to one another and each are fixed to the uncut stringer at a position along the horizontal length of the tread such that the tread is cantilevered from the stringer.
Claims6
A staircase comprising an uncut stringer and a plurality of steps comprising a tread having a horizontal length with a top and bottom planar surface and free opposing ends, said steps positioned on said stringer in a stepped apart relationship to one another, the improvement wherein:
- said tread comprises a pin extending down from the bottom planar surface of said tread and said uncut stringer comprises an aperture dimensioned to receive said pin and secure said tread to said stringer.
Dependencies are inferred from the claim text.