Foldable ladder
US9580959B2 · kind B2 · utility
8Cited by
28References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2014 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Dec 2, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A foldable ladder has a first ladder portion and a second ladder portion hingedly attached to the first ladder portion by a pair of hinge mechanisms. Each hinge mechanism adapted to lock the first and second ladder portions such that the first ladder portion and the second ladder portion form an angle therebetween. The hinge mechanism has a shifting mechanism and a ladder angle selector coupled thereto to allow manual selection of the angle between the first and second ladder portions, and a locking pin to lock the first and second ladder portions at an angular position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.