# US 2019/0166929 A1 · Earless filter mask > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0166929 A1 - Document ID: US20190166929A1 - Status: Published application - Kind: A1 - Application number: 16/268,710 - Filed: 2019-02-06 - Published: 2019-06-06 - Earliest claimed: 2016-09-21 - Inventors: Marleen Myers Bergman - Web page: https://patentgrep.com/patent/US20190166929A1 ## CPC - A41D 13/1138: {with a cup configuration} - A41D 13/1161: {Means for fastening to the user's head} - A62B 18/025: {Halfmasks (A62B23/02 takes precedence; surgical face masks A41D13/11)} - A62B 18/10: Valves - A62B 23/025: {the filter having substantially the shape of a mask (surgical face masks A41D13/11)} - A62B 18/084: {Means for fastening gas-masks to heads or helmets} - A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES - A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00) ## Abstract An earless filter mask includes an inner fabric layer, a first filter layer, a second filter layer, an outer fabric layer, an elastic material, and an exhalation valve. The inner fabric layer, the first filter layer, the second filter layer, and the outer fabric layer are stacked and aligned, the elastic material is folded over an edge of the layers, and sewn together along the edge. The elastic material conforms the mask to a shape of a wearer's face and a first tapered end of the mask is removably connected to a second tapered end of the mask by a closure device that sits at the nape of the wearer's neck. ## Claims ### Claim 1 An earless filter mask comprising: an inner fabric layer; a first filter layer; a second filter layer; an outer fabric layer; an elastic material; and an exhalation valve; wherein the inner fabric layer, the first filter layer, the second filter layer, and the outer fabric layer are stacked and aligned, the elastic material is folded over an edge of the layers, and sewn together along the edge, and wherein the elastic material conforms the mask to a shape of a wearer's face and a first tapered end of the mask is removably connected to a second tapered end of the mask by a closure device that sits at the nape of the wearer's neck. ### Claim 2 (depends on 1) The earless filter mask of claim 1, wherein the closure device comprises an elastic shoelace material. ### Claim 3 (depends on 1) The earless filter mask of claim 1, wherein the closure device comprises a cord and cord lock. ### Claim 4 (depends on 1) The earless filter mask of claim 1, wherein the inner fabric layer comprises a cotton or cotton blended fabric material. ### Claim 5 (depends on 1) The earless filter mask of claim 1, wherein the inner fabric layer comprises a synthetic or synthetic blended fabric material. ### Claim 6 (depends on 1) The earless filter mask of claim 1, wherein the inner fabric layer comprises a cotton and synthetic blended fabric material. ### Claim 7 (depends on 1) The earless filter mask of claim 1, wherein the inner fabric layer comprises a non-woven fabric material. ### Claim 8 (depends on 1) The earless filter mask of claim 1, wherein the first filter layer comprises a carbon filter material. ### Claim 9 (depends on 1) The earless filter mask of claim 1, wherein the second filter layer comprises a micro-particle filter material. ### Claim 10 (depends on 1) The earless filter mask of claim 1, wherein the first filter layer comprises a micro-particle filter material. ### Claim 11 (depends on 1) The earless filter mask of claim 1, wherein the second filter layer comprises a carbon filter material. ### Claim 12 (depends on 1) The earless filter mask of claim 1, wherein the outer fabric layer comprises a cotton or cotton blended fabric material. ### Claim 13 (depends on 1) The earless filter mask of claim 1, wherein the outer fabric layer comprises a synthetic or synthetic blended fabric material. ### Claim 14 (depends on 1) The earless filter mask of claim 1, wherein the outer fabric layer comprises a cotton and synthetic blended fabric material. ### Claim 15 (depends on 1) The earless filter mask of claim 1, wherein the outer fabric layer comprises a non-woven fabric material. ### Claim 16 (depends on 1) The earless filter mask of claim 1, wherein the exhalation valve comprises an outer facing portion disposed over a cutout of on an outer facing portion of the outer fabric layer. ### Claim 17 (depends on 16) The earless filter mask of claim 16, wherein the exhalation valve further comprises an inner facing portion having a first distal end exposed on an interior facing portion of the inner fabric layer and a second distal end that extends through cutouts in the inner fabric layer, the first filter layer, the second filter layer, and the outer fabric layer and is removably attached to the outer facing portion of the exhalation valve with a valve flap disposed between the inner facing portion and the outer facing portion. ### Claim 18 (depends on 17) The earless filter mask of claim 17, wherein the valve flap comprises a rubber material. ### Claim 19 (depends on 1) The earliest filter mask of claim 1, wherein each of the inner fabric layer, the first filter layer, the second filter layer, and the outer fabric layer comprise a first connection eyelet disposed on the first tapered end of the mask and a second connection eyelet disposed on the second tapered end of the mask. ### Claim 20 (depends on 1) The earless filter mask of claim 1, further comprising: a decorative layer disposed outside the outer fabric layer.