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Liquid nitrogen enabler

Inactive Publication Date: 2007-04-26
DUBRUCQ DENYSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0015] In accordance with another aspect of the present invention, a method of freezing a land mine using liquid nitrogen such that the mine is rendered inert and may be safely transported to a detonation chamber nearby.

Problems solved by technology

The mechanism disclosed in Cicanese, however, is limited to the application of oil well fires, and furthermore, the Cicanese patent does not disclose a method to cause mass evaporation of liquid nitrogen in the fire.
However, the DeAlmeida patent does not provide a simple, yet effective means of delivering nitrogen in a timely manner.
However, the Romanoff patent fails to disclose an effective means of delivering liquid nitrogen to the fire.
Delivering liquid nitrogen in the method proposed in Volker, however, may leave glowing embers capable of re-igniting the fire.

Method used

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Examples

Experimental program
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first embodiment

[0033] 1. the Present Invention

[0034] Turning now to the drawings and initially to FIGS. 1-3, a method of applying liquid nitrogen to a region using a galvanized material forming a circle around the fire region is shown. A gutter or trough 10 having a plurality of holes or apertures 12 thereon is provided. The holes 12 are provided so that upon introduction of the liquid nitrogen into the trough 10, the liquid nitrogen flows to fill the trough 10 and leaks out of the holes 12 under the force of gravity, thus generating an area of “raining” liquid nitrogen on the surface below. The application of liquid nitrogen in this manner will generate a substantially gaseous application of nitrogen, thus resulting in a substantial volume of inert nitrogen gas cooling the air and the surrounding surfaces.

[0035] Turning now to FIGS. 1a-c, an exemplary illustration of a trough design is shown. The trough comprises a plurality of spikes 16 on the underside of the trough 10 that are used to punctur...

second embodiment

[0044] 2. the Present Invention

[0045] Referring now to FIGS. 7-10, and in particular, FIGS. 7a-d, an explosion ordnance clearing device 46 is illustrated wherein a trough 10 having a plurality of apertures or holes 12 therein, such that flowing liquid nitrogen pours through the apertures 12. The trough 10 is placed over an explosive ordnance 40, otherwise known as a mine, such that the poured liquid nitrogen is applied to the mine after dripping through the apertures 12 in the trough 10. The application of the liquid nitrogen to the mine 40 substantially cools the mine so as to render the explosive material contained therein inert for a period of time long enough to safely transport the mine 40 to a nearby detonation chamber. In another embodiment of the present invention, double-sectioned legs 42 having a structural support section 44 are provided on the outside of the clearing device 46. Additionally, an inflatable inner section 48 is provided on the inside of the device 46.

[0046...

third embodiment

[0049] 3. the Present Invention

[0050] Turning now to FIG. 11, a third embodiment of the present invention is illustrated wherein liquid nitrogen is used to freeze detonators for safe removal thereof. A dewar 20 having an outlet 22 formed inside a drill bit sufficiently long enough to effectively probe near the detonator, is used to release the liquid nitrogen at the level of the detonator in order to freeze it and cool the surrounding area in the immediate vicinity to near-liquid nitrogen temperatures. This will freeze any material in a pipe or containment adjacent to the explosives as well making it safer to work. Next, while retaining the explosives at near-liquid nitrogen temperature, the surrounding area is dug out and removed. As shown in FIG. 11, if the explosive is tied to a well pipe 50, a water cutter 52, or similar instrument, may be employed in parallel to cut the explosive loose of the pipe 50. Liquid nitrogen cooling should continue through removing the explosives and l...

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PUM

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Abstract

A method and apparatus for using liquid nitrogen to render fires and explosives inert, thus extinguishing and controlling the fire or explosive. The present invention utilizes a trough comprising a plurality of apertures to rain liquid nitrogen down on an area underneath the trough so as to evaporate the liquid nitrogen, super cool the surrounding area, and remove oxygen so as to render the area inert.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This is a continuation application of Ser. No. 10 / 437,538, filed May 14, 2003, and entitled “Liquid Nitrogen Enabler.”BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The invention relates to a method of applying liquid nitrogen to a fire and, more particularly, relates to a method of applying liquid nitrogen to a fire so as to maximize the generation of gaseous nitrogen to provide for a greater cooling effect. [0004] 2. Discussion of the Related Art [0005] Conventional means for using liquid nitrogen to extinguish a fire, such as that disclosed in U.S. Pat. No. 6,666,278 to Cicanese (hereinafter “the Cicanese patent” or “Cicanese”), have used the release of liquid nitrogen into a fire column to facilitate the introduction of nitrogen gas into the fire. The mechanism disclosed in Cicanese, however, is limited to the application of oil well fires, and furthermore, the Cicanese patent does not disclose a method to cause...

Claims

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Application Information

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IPC IPC(8): A62C35/00A62C2/00F17D1/16F17C7/02F42B22/42A62C99/00F42B33/06G06Q30/06
CPCA62C99/0018F42B33/06G06Q30/0601Y10T137/0396
Inventor DUBRUCQ, DENYSE
Owner DUBRUCQ DENYSE
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