Full face mask

• US 20040040561A1
• Filed: 08/27/2002
• Published: 03/04/2004
• Est. Priority Date: 08/27/2002
• Status: Active Grant

• Current Assignee: Amad Tayebi
• Original Assignee: Amad Tayebi
• Inventors: Tayebi, Amad
• Granted Patent: US 6,978,782 B2
• Time in Patent Office: Days
• US Class Current: 128/205.27
• CPC Class Codes: A62B 18/02 Masks gas-masks for animals A62B18/06; masks for welders A61F9/06
• CPC Class Codes: A62B 23/025 the filter having substantially the shape of a mask surgical face masks A41D13/11

Abstract

Disclosed is a novel light weight inexpensive full face mask in which the air filtration function is carried out by an air filtration shell which has at least a portion of its surface made of a porous filtration material. The air filtration shell also acts as a breathing chamber. Also disclosed is a lower cost yet an effective method for providing a cooler breathing chamber and minimizing the volume of re-inhaled exhaled-air in any full face mask.

Claims

1. A method for delivering filtered air to the breathing chamber of a full face mask comprising the steps of:

i) forming an air filtration shell 3 in the shape of a full face mask, said air filtration shell having at least a portion of its surface being of a porous nature and capable of filtering air passing therethrough from contaminants and ii) assembling said air filtration shell 3 to other full face mask components including a support frame 2, a face sealing rim 6, a viewing lens 4, and exhalation valve 7.