05553608 is referenced by 55 patents and cites 82 patents.

A face mask is provided that includes a filter body capable of filtering liquids, particles and aerosols of a size appropriate for the mask's intended purposes, while providing excellent breathability and comfort for extended periods of time. The filter body may be formed from multiple layers of filtration material having a generally rectangular configuration with a plurality of pleats. The mask may be secured to the head of a wearer by tie strips attached to flaps extending from the filter body to form a fluid seal between the periphery of the mask and the wearer's face. For some applications, the flaps may be formed from resilient or stretchable material which further enhances both the fluid seal formed by the mask and comfort for the wearer. A clear visor may also be attached to the mask to protect the wearer's eyes and portions of the wearer's face not covered by the mask.

Title
Face mask with enhanced seal and method
Application Number
8/278930
Publication Number
5553608
Application Date
July 20, 1994
Publication Date
September 10, 1996
Inventor
Kevin K Brunson
Argyle
TX, US
Albert R Rich Jr
Watauga
TX, US
George D Reese
Arlington
TX, US
Agent
Baker & Botts L
Assignee
Tecnol Medical Products
TX, US
IPC
A62B 18/02
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