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:
Jul. 06, 2021
Filed:
May. 22, 2014
3m Innovative Properties Company, St. Paul, MN (US);
William A. Mittelstadt, Woodbury, MN (US);
Carl W. Raines, III, Woodbury, MN (US);
David R. Stein, White Bear Lake, MN (US);
Nathan A. Abel, Minneapolis, MN (US);
David M. Blomberg, Lino Lakes, MN (US);
Michael J. Cowell, Woodbury, MN (US);
Gary E. Dwyer, Mallorytown, CA;
Thomas I. Insley, Lake Elmo, MN (US);
Michael J. Svendsen, Blaine, MN (US);
Dylan T. Cosgrove, Oakdale, MN (US);
Kent E. Lageson, Prior Lake, MN (US);
Chaodi Li, Woodbury, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A respiratory mask body defining a breathable air zone for a wearer and having a shut-off valve is provided. In an exemplary embodiment, the mask body includes one or more inlet ports configured to receive one or more breathing air source components. The shut-off valve is operable between a closed position and an open position, and when in a closed position the shut-off valve prevents fluid communication between the one or more inlet ports and the breathable air zone and the shut-off valve returns to an open position in the absence of an applied force.