The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2019
Filed:
Dec. 27, 2012
3m Innovative Properties Company, St. Paul, MN (US);
Dean R. Duffy, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A filtering face-piece respiratorthat includes a mask bodyand a harnessThe mask bodyhas a major portionthat contains one or more layers of filter mediaand that has first and second flangeslocated on opposing sides of the major portionat first and second lines of demarcation. The first and second flangesare capable of folding downwardly toward the major portion. The harnessincludes one or more strapsthat each have first and second ends. The first and second straps are secured to the first and second flanges, such that there is a strap attachment point spaced at least one centimeter from the line of demarcation. The strap tension and spacing from the line of demarcation causes the flap to be folded downwardly into contact with the major portion to improve crush resistance.