Modular staircase construction
US7469516B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 19, 2005 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Mar 15, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE04F2011/0207
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A staircase structure, representatively at least partially curved, is constructed from longitudinal modules each having tread, riser and stringer portions. In one embodiment of the construction technique, stringer portions of the modules are longitudinally telescoped with one another and then intersecured so that the interfitted modules form successive longitudinal portions of the assembled staircase structure. In another embodiment of the construction technique, stringer portions of the modules are vertically stacked and then intersecured. Illustratively, the riser and stringer portions of each module are of a laminated wooden construction shaped in situ on the underside of module tread portion by a CNC milling machine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.