Surgery – Respiratory method or device – Including body or head supported means covering user's scalp
Reexamination Certificate
2006-03-07
2006-03-07
Patel, Mital (Department: 3743)
Surgery
Respiratory method or device
Including body or head supported means covering user's scalp
C128S206170, C128S206260, C128S206240
Reexamination Certificate
active
07007690
ABSTRACT:
An improved crew mask for protection of a user against chemical and biological hazards is provided. The novel crew mask includes the following features: a facepiece that includes a hybrid face seal with both intern and flat seals, and at least one transparent lens positioned at the level of the eyes of the person; at least one inlet hose for delivery of filtered air operably connected to the facepiece; at least one exhaust one-way exhaust port for venting air from the crew mask; and a compact filter unit with a reduced airflow resistance relative to currently employed filter units.
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Barrett, et al “Aerosol Loading Performance of Electret Filter Media”, AIHA Journal 59:532-539 (1998).
Chase Stephen E.
Grove Corey M.
Biffoni Ulysses John
Patel Mital
The United States of America as represented by the Secretary of
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