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Document Number
US Patent 7523750
Issued Date
April 28, 2009
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Inventors
Krzysztofik; J. Mario (Montgomery Village, MD)
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Abstract
The combination noise suppression and breathing respirator of the present invention includes a face mask of the snorkel or diving type, the facemask sealing against the face of the user around the nose, cheeks, eyes and forehead of the wearer. The facemask has a nosepiece having an exhalation flap check valve for exhalation by the user. Each side of the face mask has a one-way inlet valve at a connection which connects with rearward extending dual use air channel and straps. A noise suppression and air filter module is worn over each ear of the user and is attached to respective dual use air channel and straps. Head bands extend around the back of the wearer's head between air filter modules an adjustably connected by buckles thereto.
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Number of Claims:
3
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Published
April 28, 2009
Application Number
10/986,209
Filed
November 12, 2004
US Classification
128/201.25   128/201.28
Int'l Classification
A62B   7/10   (20060101)   A62B   18/10   (20060101)   A62B   19/00   (20060101)   A62B   23/02   (20060101)  
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Attorney/Law Firm
Parent Case
CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of U.S. provisional Patent Application Ser. No. 60/518,628 filed Nov. 12, 2003.
USPTO Field of Search
128/200.27   128/201.12   128/201.17   128/201.19   128/201.22   128/201.24   128/25   128/201.28   128/206.24   128/25   128/206.24   128/25   128/206.21   128/206.23   128/207.11  
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