Fire extinguisher
First Claim
Patent Images
1. A fire suppression system, comprising:
- an elongate ignition cord;
an initial gas generant, initially surrounding the ignition cord; and
an initiator;
a housing having upstream and downstream ends and an interior space and wherein the initiator is mounted in the upstream housing end; and
a sustainer gas generant;
wherein;
the initiator is positioned to, upon triggering, cause ignition of the gas generant so that the gas generant combusts over a first time interval so as to generate gas in a sufficient amount to substantially extinguish a fire; and
the initiator is positioned to, upon triggering, cause ignition of the sustainer gas generant so that the sustainer gas generant combusts over a second time interval, ending after an end of the first time interval, so as to generate sustainer gas in a sufficient amount to substantially prevent reignition of the fire.
6 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for fire suppression may include a flexible container, a gas generant or other suppressant, initially located within the flexible container, and an initiator. A propagating member may be located within the container to permit the initiator to initiate the generant or expel the other suppressant upon triggering of the initiator to extinguish the fire. A sustainer may be provided to sustain the suppression and may be positioned within a generator housing upstream of the propagating member or at or adjacent the downstream end of the propagating member.
64 Citations
26 Claims
-
1. A fire suppression system, comprising:
-
an elongate ignition cord;
an initial gas generant, initially surrounding the ignition cord; and
an initiator;
a housing having upstream and downstream ends and an interior space and wherein the initiator is mounted in the upstream housing end; and
a sustainer gas generant;
wherein;
the initiator is positioned to, upon triggering, cause ignition of the gas generant so that the gas generant combusts over a first time interval so as to generate gas in a sufficient amount to substantially extinguish a fire; and
the initiator is positioned to, upon triggering, cause ignition of the sustainer gas generant so that the sustainer gas generant combusts over a second time interval, ending after an end of the first time interval, so as to generate sustainer gas in a sufficient amount to substantially prevent reignition of the fire. - View Dependent Claims (2, 3, 4, 5, 6, 7)
the first interval has a length of less than 0.50 second; and
the second interval has a length of at least 2.0 seconds.
-
-
3. The system of claim 1 wherein:
-
the first interval has a length of less than 0.20 second; and
the second interval has a length of at least 3.0 seconds.
-
-
4. The system of claim 1 wherein the sustainer gas generant is formed as at least one annulus positioned coaxial with the initiator.
-
5. The system of claim 1 wherein the sustainer gas generant is formed as a single extruded sustainer tube.
-
6. The system of claim 1 wherein the ignition cord is a rapid deflagrating cord having a sheath and a pyrotechnic charge contained within the sheath.
-
7. The system of claim 1 further comprising a tube containing the gas generant and having a proximal end secured to the housing.
-
8. A fire suppression system, comprising:
-
an elongate extinguisher body comprising a flexible hose having a hose jacket and a mesh sleeve;
an ignition cord extending along a length within the hose; and
a suppressant within the hose, wherein ignition of the ignition cord is effective to directly or indirectly expel the suppressant from the extinguisher body in a direction substantially transverse to the length of the ignition cord. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
the supressant is contained within a flexible liner, which ruptures to permit said expulsion.
-
-
10. The system of claim 9 wherein:
-
said liner is a first sleeve;
the ignition cord is within a collapsed second sleeve within the first sleeve; and
upon said ignition, the collapsed sleeve inflates but does not burst.
-
-
11. The system of claim 9 wherein:
-
said rupturing is of a first portion of the liner adjacent an associated first portion of the mesh sleeve;
the ignition cord is external to the liner, adjacent a second portion thereof, opposite said first portion; and
ignition gases from said ignition drive said second portion toward said ruptured first portion so as to seal said first portion of the mesh sleeve.
-
-
12. The system of claim 8 wherein:
the jacket has one or more preformed apertures through which said expulsion occurs.
-
13. The system of claim 12 wherein:
the one or more preformed apertures are formed by removing material from the jacket to expose the mesh.
-
14. The system of claim 12 wherein:
the one or more apertures extend along a majority of the length of the extinguisher body.
-
15. The system of claim 12 wherein:
the one or more apertures occupy a majority of the length of the extinguisher body.
-
16. The system of claim 8 further comprising:
-
a first end plug sealing a first end of the flexible hose; and
a second end plug sealing a second end of the flexible hose.
-
-
17. The system of claim 16 further comprising:
-
a first end block crimped over said first end of the flexible hose; and
a second end block crimped over said second end of the flexible hose.
-
-
18. The system of claim 17 further comprising:
an initiator carried by the first end block for igniting the ignition cord.
-
19. The system of claim 16 further comprising:
-
a flexible liner containing the supressant, which liner ruptures to permit said expulsion, wherein;
the flexible liner has a first end sealed by said first end plug and a second end sealed by said second end plug; and
said second end plug has a first port in communication with an interior of said liner and a second port in communication with a space between the hose and the liner.
-
-
20. A fire suppression system, comprising:
-
a flexible elongate extinguisher body capable of being ruptured along an entire length of said extinguisher body;
an ignition cord extending along a length within the extinguisher body; and
a suppressant within the body, wherein ignition of the ignition cord is effective to directly or indirectly expel the suppressant from the extinguisher body in a direction substantially transverse to the length of the ignition cord. - View Dependent Claims (21, 22, 23, 24, 25, 26)
the suppressant comprises a liquid;
the expulsion comprises permitting combustion of at least the cord to inflate a member within the extinguisher body;
the inflation produces the expulsion by driving the liquid through an aperture or aperture array extending along a major portion of a length of the extinguisher body.
-
Specification