Stairway system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 22, 2002
Grant Date -
N/A
app pub date -
Dec 9, 1999
filing date -
Jun 10, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A prefabricated stairway module (10, 11) comprises a first step and a second step, each step (14) having a tread member (13) and a riser member (15). The stairway module further has fixing means (31) for fixing the module to a sloping surface on which it is laid. The steps in a module may be connected to each other by a rigid or flexible bridging member (19), and the tread member (13) may be curved. Different designs and configurations of the prefabricated modules may be combined into a stairway assembly, the modules which can be chosen according to the gradient of the underlying surface on which the stairway is to be constructed.
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Family
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Cited Art Landscape
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