Locking mechanism for a ladder
US8104580B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 2006 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Dec 21, 2028 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C1/22
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A locking mechanism for a collapsible ladder (1) comprising several ladder sections (5), each ladder section comprising two ladder bars (2, 3) arranged parallel to each other and interconnected at one end by a rung to form a U-shaped ladder section, and where each ladder section (5) is telescopically inserted into a lower ladder section to form a collapsible ladder (1), and where dampers (23) are provided at the lower end of the ladder bars (2, 3, and where the locking mechanism comprises retaining mechanisms (20, 41) provided on each ladder bar (2, 3), where a single pair of actuators of the locking mechanism can be arranged on any of the ladder sections (5) and still be able to collapse the entire ladder (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.