METHOD AND SYSTEM FOR ISOLATING AND TESTING BIOLOGICAL CONTAMINANTS IN MAIL PACKAGES
A method and system for encapsulating mail containers delivered to a building so as to prevent possible contaminants in the mail containers from contaminating the building. An opening is provided on a building wall that substantially separates indoor air circulation from the outdoor air for receiving the mail containers. A plastic tube having a closed end and an open end is used to encapsulate the mail containers. The open end is securely attached to the opening in the wall for receiving the mail containers into the tube, while preventing air circulation outside the building from entering the opening. A sealing device is used to seal the plastic tube for keeping the mail containers in separate sealed sections. A severing device is used to separate the sealed sections in the encapsulated packages so that the encapsulated packages can be tested for the possible contaminants.
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The present application is related to commonly owned, co-pending U.S. patent application entitled “Method And Device For Collecting And Transferring Biohazard Samples” (Attorney Docket F-761) in the names of Douglas B. Quine, Ashwani Sharma, and John E. Massucci which is hereby incorporated by reference.
The present application is related to commonly owned, co-pending U.S. Patent Application entitled “Method And Device For Isolating, Collecting And Transferring Biohazard Samples” (Attorney Docket F-774) in the names of Douglas B. Quine, Denis J. Stemmle, John E. Massucci, and Deborra J. Zukowski, which is hereby incorporated by reference.
FIELD OF THE INVENTIONThe present invention relates generally to biohazard detection and, more particularly, to the isolation of unknown mail in a building for safety testing.
BACKGROUND OF THE INVENTIONIn late 2001, several United States postal offices and other buildings were contaminated with Bacillus anthracis spores (anthrax) along the Eastern United States, resulting in anthrax infection and death among several individuals. This incident was quite costly, not only in terms of the health-related impact, but also in the required decontamination efforts. Cleanup following the anthrax contamination proved to be difficult, labor intensive, and expensive. As this threat still exists, there exists a need to contain biological contaminants within the postal packages or other containers when the postal packages are delivered to a building suspected to be a target of contamination.
It is advantageous and desirable to provide a method and system for sealing the container in a safe and cost effective way so that the sealed container can be tested for contaminants.
SUMMARY OF THE INVENTIONThe present invention provides a method and system for isolating unknown incoming mail from the circulating air of a building. When a mail tray or a postal package is delivered, the mail tray or postal package is sealed in a controlled environment such that the exterior of the sealed package is not contaminated by the contaminants in the mail tray itself. The mail tray is maintained in a sealed condition within the building until it has been fully tested for any hazardous or suspicious materials. The sealed package can be transported within the building without the risk of contaminating the circulating air in the building, without the need for expensive negative pressure isolation chambers, and without the need to implement expensive decontamination procedures in the event that hazardous materials are discovered in the mail. Furthermore, the sealed package can be tested for biological contaminants without exposing the test operators to the mail.
BRIEF DESCRIPTION OF THE DRAWINGS
As shown in
It is advantageous to use a clear plastic for encapsulation. The clear plastic will allow casual observation of powders or foreign materials within the encapsulated package 164 that may be stirred up by shaking or flexing of the mail tray 20 as the package 164 is moved about. Electrostatic treatment of the plastic material (or application of adhesive materials on the inside) may augment the ability to attract such dust or powders. However, using electrostatic plastic materials or adhesive materials may reduce the chance of detecting the potential biohazard in the package because the number of airborne particles is reduced. Thus, it may be more desirable to use transparent, anti-static material for encapsulation. These encapsulated packages 164 may be moved anywhere within the building without the need to move the mailroom to the periphery of the building, without the need to make major changes in the ventilating system to allow isolated air circulation to the mail room, and without the need for negative air pressure chambers and employees in restrictive biological suits and respirators, for example.
Once the mail arrives in the mailroom or the mail testing area 200, it may be tested using any of the mail hazard detection technologies. However, it is advantageous to operatively connect the encapsulated package 164 to a particle collection assembly 210 as shown in
It should be noted that the plastic tube 160 can also be made from one or more plastic sheets in a sheet-sealing compartment 180 near the opening 110, as shown in
Although the invention has been described with respect to a preferred embodiment thereof, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims
1. (canceled)
2. (canceled)
3. The method of claim 6, further comprising
- inspecting the sealed tube sections for detecting the possible contaminants.
4. The method of claim 6, further comprising
- extracting an air sample through a self-seal pad using a needle from at least one of the sealed tube sections for detecting the possible contaminants.
5. (canceled)
6. A method for preventing possible contaminants associated with mailpieces that are to be delivered to a building from contaminating an enclosed space of the building, wherein the enclosed space is defined by at least one wall that separates this enclosed space from an area outside the building, said method comprising;
- providing an opening in the at least one wall for receiving the mailpieces;
- providing a packaging tube having a closed end and an open end, the open end securely attached to the opening so as to prevent air circulation outside the building from entering the enclosed space from the opening;
- receiving the mailpieces into the packaging tube through the open end of the packaging tube; and
- hermetically sealing the packaging tube for encapsulating the mailpieces in at least one sealed tube section.
- severing the sealed tube sections Into separate encapsulated packages: and transporting the separate encapsulated packages along a conveyor
- extracting an air sample from each of the encapsulating packages through a filter for collecting on the filter particles that may be contaminants associated with the mailpiece so as to detect the possible contaminants based on the collected particles and wherein the mailpieces are delivered in separate groups and wherein said sealing is carried out for sealing the packing tube at intervals in order to separately encapsulate the groups of the mailpieces in a plurality of sealed tube sections.
7. The method of claim 6, further comprising
- agitating the encapsulating packages prior to said extracting so as to stir up the particles associated with the mailpieces into the air sample.
8. The method of claim 7, wherein each group of the mailpieces is delivered in a mail container, and wherein said agitating is carried out by disturbing the mail container in the encapsulating package.
9. The method of claim 6, wherein said sealing is carried out by applying heat and pressure to the package tube in a heat-sealing process.
10. The method of claim 6, wherein said sealing is carried out by using an adhesive.
11. The method of claim 6, wherein said sealing is carried out by using an ultrasonic sealing process.
12. The method of claim 6, further comprising
- puncturing the mailpieces prior to said extracting for providing an opening in the mailpieces so as to allow the particles associated with the mailpieces to move into the air sample through the opening of the mailpieces.
13. (canceled)
14. The system of claim 21, wherein the packaging tube is made of a substantially clear material so as to allow inspection of the sealed tube sections for detecting the possible contaminants.
15. The system of claim 21, wherein the packaging tube is made of a material that attracts particles that may be contaminants associated with the mailpieces so as to allow the inspection based on the attracted particles.
16. (canceled)
17. The system of claim 21, wherein each sealed section has at least one septum disposed thereon so as to allow the puncturing device to puncture the septum in order to reach air inside said sealed section.
18. (canceled)
19. (canceled)
20. A system for preventing possible contaminants associated with mailpieces that are to be delivered to a building from contaminating an enclosed space of the building, wherein the enclosed space is defined by at least one wall that separates this enclosed space from an area outside the building, and wherein the at least one wall has an opening for receiving the mailpieces, said system comprising:
- a packaging tube disposed at the opening, the packing tube having an open end for receiving the mail into the package tube through the open end, the packing tube further having a closed end substantially opposing the open end, wherein the open end is securely attached to the opening so as to prevent air circulation outside the building from entering the enclosed space through the opening;
- a sealing device, disposed in the enclosed space In relation to the opening, for hermetically sealing the packaging tube in order to encapsulate the received mailpieces in one or more sealed tube sections;
- an air sample extracting device including,
- a puncturing device for reaching the air inside said one or more sealed tube sections; and
- an air moving device, for moving a sample of the air inside said one or more sealed tube sections to a detector for detecting the possible contaminants associated with the mailpieces;
- a filter assembly for collecting In the filter assembly particles that may be contaminants so as to allow said detecting based on the collected particles; and
- an agitating device, disposed in relation to said one or more sealed tube sections, for disturbing the mailpieces in the sealed tube sections in order to stir up particles associated with the mailpieces into the air sample,
- wherein the mailpieces are delivered in mail containers, said agitating device comprising a jogger disposed below the sealed tube sections for disturbing the mail containers.
21. A system for preventing possible contaminants associated with mailpieces that are to be delivered to a building from contaminating an enclosed space of the building, wherein the enclosed space is defined by at least one wall that separates this enclosed space from an area outside the building, and wherein the at least one wall has an opening for receiving the mailpieces, said system comprising:
- a packaging tube disposed at the opening, the packing tube having an open end for receiving the mail into the package tube through the open end, the packing tube further having a closed end substantially opposing the open end, wherein the open end is securely attached to the opening so as to prevent air circulation outside the building from entering the enclosed space through the opening;
- a sealing device, disposed in the enclosed space in relation to the opening, for hermetically sealing the packaging tube in order to encapsulate the received mailpieces in one or more sealed tube sections;
- an air sample extracting device including,
- a puncturing device for reaching the air inside said one or more sealed tube sections; and
- an air moving device, for moving a sample of the air inside said one or more sealed tube sections to a detector for detecting the Possible contaminants associated with the mailpieces; and
- a severing device for physically separating the sealed tube sections into a plurality of encapsulated packages, so as to allow the air sample extracting device to separately move the air inside each of the encapsulated packages for detecting the possible contaminants in the mailpieces.
22. The system of claim 20, further comprising
- a severing device for physically separating the sealed tube sections into a plurality of encapsulated packages so as to allow the encapsulated packages to be tested separately for detecting the possible contaminants.
Type: Application
Filed: Dec 19, 2003
Publication Date: May 25, 2006
Applicant: Pitney Bowes Incorporated (Stamford, CT)
Inventors: Douglas Quine (Bethel, CT), Denis Stemmle (Stratford, CT)
Application Number: 10/742,106
International Classification: B07C 5/00 (20060101); B65B 9/00 (20060101);