Abstract: An improved chimney-fire safety device includes a cylindrical canister that is placed in the top of a chimney or a stovepipe. The canister contains a mesh basket which has one or more membranes that are filled with extinguishing compounds. The mesh basket and a protective insulation platform are retained in the canister during controllable fires. The basket is secured to the canister by a tether. A fuse cap located in a bottom portion of the canister retains the basket, but disintegrates at a temperature commensurate with that of a runaway fire. When the fuse cap disintegrates, the mesh basket containing the extinguishing compounds drops from the canister and becomes suspended over the fire due to the tether; thus, the extinguishing chemicals are dispersed to the fire in a controlled fashion.

Abstract: The present invention features an improved chimney fire safety device. The device includes a cylindrical canister that is affixed in the top of a chimney or stove pipe. The canister contains one or more membranes containing extinguishing compounds. A metal dish is disposed in the bottom of the canister, and holds the extinguishing compounds in place until needed. The walls of the canister adjacent the metal dish are coated with a frictionless, high-temperature, anti-seize material, so that the metal dish will drop from the canister without difficulty at the proper time. A fuse cap is affixed to the bottom of the canister. The fuse cap is contiguously held to the metal dish, and keeps it in place until a predetermined temperature of an uncontrolled fire is reached. Thereafter, the fuse cap will disintegrate and allow the metal dish to drop from the canister.

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.