Device for coupling fire extinguishers to closed-off compartment

Details Device for coupling fire extinguishers to closed-off compartment Device for coupling fire extinguishers to closed-off compartment

1984-11-21

1986-12-02

Nase, Jeffrey V.

Fire extinguishers

Portable vessels

169 70, 239271, A62C 1100

Patent

active

046258086

ABSTRACT:
The invention is a device for coupling an outlet port of a fire extinguisher containing a source of pressurized fire suppression chemical to the interior of a closed-off compartment 12 having a pierceable wall 14. The device comprises a cylinder 22 having a moveable ram portion 66 adapted to pierce the wall 14 upon the cylinder receiving the pressurized fire suppression chemical. The cylinder 22 includes first and second ends 26, 32, the first end closed off by a first wall 28, the cylinder 22 further having an inlet port 30 in proximity to the first end 26. A piston 50 is moveably mounted within the cylinder 22, forming a closed-off chamber 56 within the cylinder. The piston 50 includes a piston rod 64 coupled to the ram portion. The piston 50 further includes passages 68, 70 coupling the chamber 56 to the exterior surface of the ram portion 66. A sealing disk 92 having a plurality of support rods 94 are moveably mounted through a plurality of holes 90 in the piston 50, with the length of the rods being greater than the thickness of the piston. The sealing disk 92 is adapted to seal the passage 68 when the piston 50 is in proximity to first end 26, and the rods 94 are adapted to contact a second wall 34 at a second end 32 prior to the piston coming into contact therewith causing the sealing disk 92 to uncover the passage 68. A flexible line 100 is adapted to couple the cylinder 50 to the outlet port 108 of a fire extinguisher 110.

REFERENCES:
patent: 1484888 (1924-02-01), Johnson
patent: 3972373 (1976-08-01), Nichols et al.
patent: 4124077 (1978-11-01), Barge
patent: 4420047 (1983-12-01), Bruensicke

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