or
Bookmark and Share
Fibrous filtration face mask
   
Document Number
US Patent 7131442
Issued Date
November 7, 2006
Link
Inventors
Map
Abstract
A face mask for filtering contaminants from the air. The face mask includes a harness for securing the mask over the nose and mouth of the wearer and a nonwoven fibrous layer attached to the harness. The nonwoven fibrous layer contains at least 40 weight percent thermally bonding fibers, where at least 10 weight percent of the fibers in the nonwoven fibrous layer are bicomponent fibers. The nonwoven fibrous layer is molded in a cup-shaped configuration and has a surface fuzz value of not less than 7.5 after being subjected to a surface fuzz abrasion test.
Tags:
Description:
Amusing 0%
Clever 0%
Complex 0%
Efficient 0%
Historic 0%
Important 0%
Innovative 0%
Interesting 0%
Practical 0%
Simple 0%
Number of Claims:
6
Comments:
no comments yet
Published
November 7, 2006
Application Number
08/661,834
Filed
June 11, 1996
US Classification
128/205.27   128/205.29 128/206.12 128/206.19 128/206.21
Int'l Classification
A62B   7/10   (20060101)  
Examiner
Attorney/Law Firm
Parent Case
This is a continuation of application Ser. No. 08/154,989 filed Nov. 18, 1993 now abandoned, which is a division of application Ser. No. 07/632,964 filed Dec. 20, 1990 now U.S. Pat. No. 5,307,796 now abandoned.
USPTO Field of Search
128/205.27   128/205.28   128/205.29   128/206.12   128/206.21   128/206.19  
Related Patents
Claims
Description
About| FAQs| Terms & Disclaimer| Link to Us| Contact Us