Fire extinguishers – Special applications
Patent
1991-07-25
1992-11-17
Focarino, Margaret A.
Fire extinguishers
Special applications
169 57, A62C 304
Patent
active
051635160
ABSTRACT:
The present invention features a chimney fire safety device that attacks a chimney fire by a multi-stage application of flame extinguishing compounds. The extinguishing compounds are disposed in a nested envelope, one-within-the-other. Each compound mass is enclosed in a fusible, time-release membrane, and the encased compounds are nested within each other, such that the fire extinguishing applications are sequentially applied one after the other at ever closer positions relative to the source of the fire. The compound mass rests upon, or is confined by, a platform at the top of a chimney or wood burning stove flue. The platform is designed to collapse, thus dropping the chemicals upon the fire. A fusible link melts under the higher temperature of an uncontrolled fire, thus collapsing the platform and releasing the chemical extinguisher. An alarm or flag warning is also triggered in response to the melting of the fusible link.
REFERENCES:
patent: 4260023 (1981-04-01), Irmscher
patent: 4384617 (1983-05-01), Mueller
Focarino Margaret A.
Gilbert Machine & Tool Company, Inc.
Hoge Gary C.
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