US 11,744,974 B2
Liner for a respirator mask
Bruce O. Baker, Big Rapids, MI (US)
Assigned to ATHFAR 828, Inc., Jackson, MI (US)
Filed by ATHFAR 828, INC., Jackson, MI (US)
Filed on Jun. 11, 2019, as Appl. No. 16/437,431.
Application 16/437,431 is a continuation of application No. 14/317,667, filed on Jun. 27, 2014, granted, now 10,357,626.
Claims priority of provisional application 61/857,453, filed on Jul. 23, 2013.
Prior Publication US 2019/0290874 A1, Sep. 26, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 16/06 (2006.01); A61M 16/00 (2006.01); A61M 16/10 (2006.01); A61F 5/30 (2006.01)
CPC A61M 16/0622 (2014.02) [A61F 5/30 (2013.01); A61M 16/0057 (2013.01); A61M 16/06 (2013.01); A61M 16/105 (2013.01); A61M 2016/0661 (2013.01); A61M 2205/0205 (2013.01); A61M 2205/0238 (2013.01); A61M 2205/583 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A respirator mask liner, comprising:
a flexible woven fabric sheet portion comprising a blend of a lower-elasticity first fiber blended with a higher-elasticity second fiber having higher elasticity than the first fiber, wherein the first fiber makes up about 95 to 98 percent of the mask liner by weight and the second fiber makes up about 2 to 5 percent of the mask liner by weight;
an opening defined along an interior region of the fabric sheet portion, a perimeter edge portion surrounding the opening, wherein the opening is configured to receive a portion of a wearer's nose and/or mouth, the fabric sheet portion having an upper portion and a lower portion;
at least one tab projecting outwardly from the perimeter edge portion along the upper portion; and
an adhesive attachment element on the at least one tab, wherein the attachment element is configured to be attached directly to the respirator mask to releasably secure the fabric sheet portion to the respirator mask,
wherein the fabric sheet portion comprises a skin-contacting surface having a ribbed and undulating pattern configured to obstruct airflow between the skin-contacting surface and a wearer's skin, wherein the skin-contacting surface defines a plurality of raised portions in spaced arrangement, wherein the raised portions are arranged at first spacing intervals in a first direction and arranged at second spacing intervals that are greater than the first spacing intervals in a second direction that is substantially perpendicular to the first direction.