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.
First Claim
Other Claims data not available