Walkway assembly
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 28, 2016
Grant Date -
Jan 3, 2013
app pub date -
Mar 9, 2011
filing date -
Mar 10, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A walkway assembly (10) for attachment to a support structure such as a roof of a building includes a primary support (13) for on-site attachment to the support structure, a plurality of tread modules (41) each attached relative to the primary support and moveable between a first position and a second position at which a part of each tread module is spaced further from the primary support than when at the first position, and at least one riser unit (48) for supporting the tread modules relative to the primary support in at least the second of the first and second positions.
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