Walkway assembly
US9376820B2 · kind B2 · utility
3Cited by
16References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2011 |
| Grant date | Jun 28, 2016 |
| Priority date | — |
| Expiry date | Jul 14, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C1/39
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.