Actuating mechanism for fire extinguisher
AssigneeFF Seeley Nominees Pty. Ltd.
InventorRobert Wilton James
Life of this patent
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Abstract
A mechanism is disclosed for the activation of a system which will deliver material such as a fire extinguishant in response to an electrical signal from a fire detector. The mechanism is actuated by a small electrical storage device which operates the system even after a fire or other event has occurred and the normal electrical supply is lost. Upon actuation, a container of pressurized carbon dioxide gas is used to pressurize a container of fire extinguishing fluid, which is then delivered by a spray mechanism to the source of the fire. A feature of the mechanism is that energy levels for initiation are very low, and all other sources of energy are self contained within the mechanism.
Claims14
A mechanism for actuating a device to deliver material to a material distributor, said mechanism comprising:
- an electrically operable explosive device;
- an electronic capacitive electrical source operably connected to the explosive device for energizing the explosive device to cause explosive emission of a pressure pulse;
- structure defining a first chamber containing said explosive device;
- the structure including a movable wall portion actuateable by a pressure pulse generated by said explosive device;
- a diaphragm piercer;
- a container of nonflammable pressurized fluid having a rupturable diaphragm adapted to be pierced by said diaphragm piercer in response to movement of the movable wall portion;
- the structure defining a second chamber around said container and a third chamber for containing such material the second chamber being for receipt of the pressurized fluid from said container when the diaphragm is penetrated;
- a pressure responsive release device for communicating pressurized fluid from said second chamber with the third chamber;
- and
- the structure further defining an outlet passage connected to the interior of said third chamber for feeding pressurized material to the distributor.
A fire extinguishing system comprising:
- a) a reservoir having an internal space containing a supply of fire extinguishment material;
- b) a housing carried by the reservoir and projecting into the space;
- c) a canister of pressurized gas carried by the housing and positioned to discharge the pressurized gas into the space;
- d) an electrically actuatable piercing mechanism carried by the housing and positioned to pierce a canister seal and release said pressurized gas upon receipt of a low energy electric pulse;
- e) an electronics package including an electrical supply component adapted to emit a low energy electric pulse and a conductor operably connected to the supply component and the piercing mechanism for transmitting such an electrical pulse to the piercing mechanism;
- f) a fire detector operably connected to the package for sensing the existence of a fire and emitting a signal, the supply component being adapted to emit such a pulse in response to such a signal;
- and,
- g) a material delivering mechanism connected to the reservoir and projecting into the space for transmitting the material to a fire as the material is forced through the delivery mechanism by the pressurized gas upon release of the gas from the canister.
Dependencies are inferred from the claim text.