Deposit and collection receptacles – Closures and chutes – Letter box
Reexamination Certificate
2005-09-27
2005-09-27
Miller, William L. (Department: 3677)
Deposit and collection receptacles
Closures and chutes
Letter box
C232S017000, C073S864330
Reexamination Certificate
active
06948653
ABSTRACT:
A portable detection system (10) for hazardous materials including explosives and infectious or hazardous biological agents readily adapted to conventional mail collection boxes (12), rural mailboxes (100) and the like. The system includes a fan (14) and a sensor (16). The fan (14) provides sufficient airflow to circulate the air within a mailbox such that the internal air after coming in contact with the contents is directed the sensor for analysis. The air quality can be determined visually (137), audibly (138), or electronically (139). Consequently once such detection is made and the air is verified as being safe, the contents can be removed safely. If it is determined that the air contains some type of hazardous material, further steps can be taken to specifically locate the source of such hazardous material. An alternative embodiment includes a filter (15) to improve fan efficiency.
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Beckert John T.
Hutchinson Daniel M.
Rice Daniel G.
Terry William S.
Borghetti Peter J.
Erlich Jacob N.
Lockheed Martin Corporation
Miller William L.
Perkins Smith & Cohen LLP
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