US 11,865,375 B2
Respirator fit check sealing devices and methods
William A Mittelstadt, Cottage Grove, MN (US); David M. Blomberg, Lino Lakes, MN (US); Thomas W. Holmquist-Brown, Hastings, MN (US); Adam J. Cernohous, River Falls, WI (US); and Michael J. Cowell, Woodbury, MN (US)
Assigned to 3M innovative Properties Company, St. Paul, MN (US)
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
Filed on Dec. 7, 2021, as Appl. No. 17/457,957.
Application 17/457,957 is a continuation of application No. 16/087,914, granted, now 11,219,787, previously published as PCT/US2017/022401, filed on Mar. 15, 2017.
Claims priority of provisional application 62/313,942, filed on Mar. 28, 2016.
Prior Publication US 2022/0088422 A1, Mar. 24, 2022
Int. Cl. A62B 18/10 (2006.01); A62B 18/02 (2006.01); A62B 19/00 (2006.01); A62B 18/08 (2006.01)
CPC A62B 18/10 (2013.01) [A62B 18/025 (2013.01); A62B 19/00 (2013.01); A62B 18/084 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A respiratory protection device, comprising:
a mask body defining a breathable air zone for a wearer and having a first receiver, the first receiver comprising a first elastomeric seal having a first end region and a second end region and defining a first channel configured to at least partially receive a first breathing air source component;
a valve assembly operable between an open configuration and a closed configuration in which fluid communication through the first breathing air source component to the breathable air zone is prevented;
wherein a first sealing surface of the valve assembly is at an oblique angle to a longitudinal axis of the valve assembly and configured to sealingly contact a surface of the second end region of the first elastomeric seal when the valve assembly is in the closed configuration,
wherein the surface of the second end region is arranged to be at an oblique angle along the longitudinal axis;
wherein the first elastomeric seal is configured to sealingly engage with the first breathing air source component at the first end region of the first elastomeric seal, and
wherein the valve assembly engages with the second end region of the first elastomeric seal when the valve assembly is in the closed configuration to prevent fluid communication between the first breathing air source component and the breathable air; and
wherein the first sealing surface is configured to move linearly along the longitudinal axis between the open and closed configurations.