Wing extension for roof ladder
US4923049A · kind A · utility
3Cited by
7References
9Claims
0Family size
Inventors
Key dates
| Filing date | Mar 29, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Mar 29, 2009 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/16
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention is directed to a portable wing extension for releasably securing to a roof ladder. The wing extension includes a horizontal wing section secured to slide through supports which are received within adjacent rungs of the ladder. A pair of lock pins releasably secure the wing extensions to the ladder. Wing extensions can be attached to either or both sides of the ladder. The attached wing extensions permit a firefighter to safely cut a ventilation hole in a roof beyond the width of the ladder at any location on the roof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.