Static structures (e.g. – buildings) – Stepped; e.g. – stair
Reexamination Certificate
2008-09-09
2008-09-09
Nelson, Jr., Milton (Department: 3636)
Static structures (e.g., buildings)
Stepped; e.g., stair
C052S749100
Reexamination Certificate
active
10860173
ABSTRACT:
A stairway system is disclosed that includes a plurality of spaced apart treads; a handrail; and at least two balusters per tread. Each baluster includes a top length segment, a bottom length segment and a turning length segment, the turning length segment including a portion of defined features. According to the present invention, a length of the turning length segment of a subsequent baluster is greater than a length of the turning length segment of a previous baluster on the same tread according to the equation of the riser height divided by the total number of balusters. Thus, each of a portion of the defined feature in the bottom length segment of each of the balusters align with the tread for each baluster. In the preferred embodiment, only four different baluster lengths are necessary for both two and three balusters per tread stairway systems.
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Letter of Isaac P. Espy dated Oct. 6, 2006.
,MacCord Mason PLLC
ECMD, Inc.
Jr. Milton Nelson
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