Stowable ladder configured for installation in an opening
US6991063B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2003 |
| Grant date | Jan 31, 2006 |
| Priority date | — |
| Expiry date | Sep 26, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C1/54
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A stowable or foldable ladder is configured for installation in an opening between one floor or space and another floor or space. An upper ladder section includes a left ladder rail and a right ladder rail, a lower ladder section having a left ladder rail and a right ladder rail, a hinge rotatably connecting the upper ladder section left ladder rail to the lower ladder section left ladder rail and rotatably connecting the upper ladder section right ladder rail to the lower ladder section right ladder rail, and a plurality of steps rotatably disposed between the upper pair of ladder rails and the lower pair of ladder rails. The steps are configured for rotation between a retracted position and a deployed position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.