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. 23, 2024
Filed:
Oct. 06, 2020
3m Innovative Properties Company, St. Paul, MN (US);
John M. Facer, Langley Park, GB;
Christopher P. Henderson, Penrith, GB;
Peter S. Leonard, Newton Ayecliffe, GB;
Desmond T. Curran, Durham, GB;
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A maintenance-free respiratorthat includes a mask harness and a mask body. The mask bodyhas at least one layer of filter mediaand has a perimeterthat includes an upper segment. The upper segmentincludes first and second concave segmentsthat are located, respectively, on first and second sides of a central plane, when viewing the mask body from a top view. A maintenance-free respiratorof this configuration is comfortable to wear and can provide a snug fit to a wearer's face, particularly beneath each of the wearer's eyes, while at the same time having an ability to improve compatibility with various protective eyewear.