Firefighters' remote roof venting apparatus
US6298945A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2000 |
| Grant date | Oct 9, 2001 |
| Priority date | — |
| Expiry date | Apr 21, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE06C7/12
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A roof venting apparatus is mounted to a firefighting vehicle's aerial extension ladder, where a semi-cylindrical, double-pointed lance is dropped and raised onto and through the roof of a burning structure as many times as necessary to properly vent the burning building. The lance is dropped and raised by a free-spooling, electric braking winch, which is mounted to an anchor board securely hooked onto the bottom rungs of a fire truck's aerial extension ladder, and which is operated by a fire fighter on the ground who mans a toggle control panel welded onto the lower anchor board. The winch cable extends up the length of the extended aerial ladder, through a series of stabilizing, free-wheeling idler wheels mounted to another removable anchor board screwed onto the top rungs of the truck's extension ladder. The lance, if hollow, is transported to the scene of the fire empty, where it can be filled with water with the fire hose, to establish the necessary dropping weight. After its use, it is emptied through the drain hole at the base of the lance when the fire has been controlled and the lance is ready to be transported back to the station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.