Extension ladder, combination end cap/guide bracket, and method for climbing
US5758745A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1996 |
| Grant date | Jun 2, 1998 |
| Priority date | — |
| Expiry date | Jul 18, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C1/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An extension ladder comprises a base section comprising a first base rail, a second base rail in spaced relationship and in parallel with the first base rail, and at least a first base rung connected to the first base rail and the second base rail. The extension ladder also comprises a fly section slidably connected to the base section. The fly section comprises a first fly rail, a second fly rail in spaced relationship and in parallel with the first fly rail, at least a first fly rung connected to the first fly rail and the second fly rail, a first combination end cap/guide bracket connected to the bottom of the first fly rail, and a second combination end cap/guide bracket connected to the bottom of the second fly rail. Each end cap/guide bracket is one continuous piece. The first fly rail is adjacent to and in parallel with and in spaced relationship with said first base rail. The second fly rail is adjacent to and in parallel with and in spaced relationship with said second base rail. The first and second combination end cap/guide bracket prevents the fly section separating from the base section and capping the bottom end of the first fly rail and second fly rail, respectively.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.