# US 4,393,941 A · Chimney fire snuffer

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- Number: US 4,393,941 A
- Document ID: US4393941A
- Status: Granted
- Kind: A
- Application number: 06/240,437
- Filed: 1981-03-04
- Granted: 1983-07-19
- Earliest claimed: 1981-03-04
- Inventors: Barry A. Stevens
- Web page: https://patentgrep.com/patent/US4393941A

## CPC

- B05B 13/0627: {Arrangements of nozzles or spray heads specially adapted for treating the inside of hollow bodies (B05B13/0645 takes precedence)}
- A62C 3/04: for dust or loosely-baled or loosely-piled materials, e.g. in silos, in chimneys (flame traps A62C4/00)
- B05B 1/14: with multiple outlet openings (B05B1/02, B05B1/26 take precedence); with strainers in or outside the outlet opening
- B05B 1/1422: {with all groups or rows being identical}
- B05B 1/1423: {comprising concentric or coaxial groups}
- B05B 1/202: {comprising inserted outlet elements}
- B05B 13/069: {the hollow bodies having a closed end}
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- A62C: FIRE-FIGHTING (fire-extinguishing compositions, use of chemical substances in extinguishing fires A62D1/00; spraying, applying liquids or other fluent materials to surfaces in general B05; alarm arrangements G08B, e.g. fire alarms actuated by smoke or gases G08B17/10)

## Abstract

A hollow cylindrical heavy metal body terminates at one end in a tapered impact section, while its opposite end bears a threaded hose coupling for coupling of the hollow body to the end of a water hose. A plurality of spray nozzles mounted to the cylindrical body open to the hollow interior and bear fine diameter holes for spraying water under pressure in mist form circumfertially of the body. The body may be lowered by the garden hose or the like with the impact section penetrating accumulating creosote. The water spray rapidly puts out chimney fires without extensive water damage.

## Claims

### Claim 1

A chimney fire snuffer for attachment to the end of a garden hose or the like for lowering through a chimney for extinguishing chimney fires caused by accumulated creosote on the interior surfaces of the chimney and tending to block the chimney interior, said snuffer comprising:
an elongated heavy metal cylindrical body,
a bore extending axially of said body from one end thereof,
a plurality of spray nozzles mounted to the periphery of said body and forming a circumferentially spaced array about said body,
said spray nozzles each bearing a fine spray hole opening to the body bore,
means for sealably coupling one end of said body about said bore to said hose for filling said bore with water under pressure,
and wherein said heavy metal body terminates at the end remote from said hose coupling means in a solid conical end and functioning to seal off said bore at that end and to break through accumulated creosote tending to block the chimney passage when lowered at the end of the garden hose, and wherein water solely in fine water spray mist form is directed radially of said heavy metal body to quickly extinguish the flames with minimal water damage to the chimney interior and the building bearing the chimney.

### Claim 2 (depends on 1)

The chimney fire snuffer as claimed in claim 1, wherein said cylindrical body comprises a hollow cylindrical body section and a separate, conical end piece threaded to the end of body bore remote from said hose coupling.

### Claim 3 (depends on 1)

The chimney fire snuffer as claimed in claim 1, wherein said hollow body bears a plurality of tapped and threaded radial holes within the periphery of said body and opening up to the hollow body interior, and wherein said tapped and threaded holes are counterbored at the hollow body outer periphery, and wherein said spray nozzles are threaded at one end to said threaded hole and are of a length such that the radial outer ends of said spray nozzles are recessed within said counterbores to prevent obstruction by said spray nozzles to lowering of said snuffer within said chimney interior.