Sealable devices to cause deposition of vapors into samples

Patent metadata

Field	Value
Publication number	US-11802091-B2
Application number	US-202217971018-A
Country	US
Kind code	B2
Filing date	Oct 21, 2022
Priority date	Mar 29, 2019
Publication date	Oct 31, 2023
Grant date	Oct 31, 2023

Abstract

Various embodiments of the present invention are directed towards a system and method relating to depositing vapor in a sample. For example, a device includes a vapor source chamber configured to contain a vapor source material to generate vapor. An activation chamber is configured to contain a sample. The activation chamber is in fluid communication with the vapor source chamber to receive the vapor. A permeable separator divides the vapor source chamber and the activation chamber, and isolates the sample in the activation chamber while allowing vapor to pass between the vapor source chamber and the activation chamber. The device is sealable and configured to apply vacuum to the vapor and sample, to cause deposition of the vapor into the pumice stone samples.

First claim

What is claimed is:

1. A device comprising:
a vapor source chamber configured to contain a vapor source material to generate vapor;
an activation chamber configured to contain a sample and in fluid communication with the vapor source chamber to receive the vapor; and
a permeable separator disposed between the vapor source chamber and the activation chamber, configured to isolate the sample in the activation chamber and allow passage of vapor between the vapor source chamber and the activation chamber;
wherein the device is sealable and configured to apply vacuum to the vapor and sample, to cause deposition of the vapor into the sample.

2. The device of claim 1 , wherein the device includes an orifice configured to be coupled to a vacuum pump that places the device under vacuum in response to temperature of the device increasing to a threshold temperature.

3. The device of claim 1 , wherein the permeable separator is a sheet formed of aluminum mesh.

4. The device of claim 3 , wherein the permeable separator is 1100 grade aluminum diamond mesh sheet.

5. The device of claim 1 , wherein the vapor source material is an explosive.

6. The device of claim 1 , further comprising a vacuum line orifice formed in a lid that seals the device.

7. The device of claim 6 , further comprising a one-way relief valve coupled to the vacuum line orifice to prevent gases from entering into, while allowing the gases to exit from, the device.

8. The device of claim 6 , further comprising a vacuum line coupled to the vacuum line orifice.

9. The device of claim 1 , wherein the vapor source chamber includes a tapered section leading to the activation chamber.

10. The device of claim 1 , wherein the vapor source chamber, the permeable separator, and the activation chamber are made of aluminum.

11. The device of claim 1 , wherein the vapor source chamber, the permeable separator, and the activation chamber are made of stainless steel.

12. The device of claim 1 , further comprising an o-ring seal and a removable lid to seal the device.

13. A composition of matter, comprising:
a natural volcanic rock substrate having vesicular structures; and
chemical vapor molecules, other than water vapor molecules, disposed in the vesicular structures;
wherein the chemical vapor molecules are of a vapor source material selected from the set comprising explosives including RDX.

14. The composition of matter as set forth in claim 13 , further comprising a permeable bag that is heat sealed to package the natural volcanic rock substrate for use as a training aid.

15. The composition of matter as set forth in claim 14 , further comprising an impermeable aluminum bag that is heat sealed to store the permeable bag containing the natural volcanic rock substrate.

Assignees

• The Government Of The Us Secretary Of Homeland Security

Inventors

• Cho Inho

Classifications

• C04B41/4531 Primary

  by C.V.D. · CPC title

• B01J15/00

  Chemical processes in general for reacting gaseous media with non-particulate solids, e.g. sheet material; Apparatus specially adapted therefor (B01J19/08 takes precedence) · CPC title

• B01J19/0073

  Sealings (sealings for pressure vessels per se F16J15/00) · CPC title

• C04B41/009

  characterised by the material treated · CPC title

• C04B41/455

  the coating or impregnating process including a chemical conversion or reaction · CPC title