Multipurpose ladder and method
US11851949B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 14, 2019 |
| Grant date | Dec 26, 2023 |
| Priority date | — |
| Expiry date | Jan 29, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/50
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A multipurpose ladder having a first inner section. The ladder has a first articulated hinge and a second articulated hinge. The ladder has a second inner section. The ladder has a first outer section. The ladder has a first locking bar. The ladder has a second outer section. The multipurpose ladder may have a plurality of brackets disposed about outer rails of the outer sections. The brackets provide support to each of the outer rails and strengthens them against bending forces so the rails can be thinner and of lighter weight. The ladder may have an ANSI duty rating of 1A or an ANSI duty rating of 1AA. A method for using a multipurpose ladder. A method for producing a multipurpose ladder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.