US 12,440,707 B2
Reusable respirator
Andrew T. Bugliosi, Milwaukee, WI (US); Trent T. Bauters, West Allis, WI (US); and Aaron M. Williams, Milwaukee, WI (US)
Assigned to Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed by Milwaukee Electric Tool Corporation, Brookfield, WI (US)
Filed on Mar. 24, 2022, as Appl. No. 17/703,547.
Application 17/703,547 is a continuation of application No. PCT/US2022/019534, filed on Mar. 9, 2022.
Claims priority of provisional application 63/159,034, filed on Mar. 10, 2021.
Claims priority of provisional application 63/161,181, filed on Mar. 15, 2021.
Prior Publication US 2022/0288428 A1, Sep. 15, 2022
Int. Cl. A62B 18/02 (2006.01); A62B 18/10 (2006.01); A62B 23/02 (2006.01); B01D 46/24 (2006.01)
CPC A62B 18/02 (2013.01) [A62B 18/10 (2013.01); A62B 23/02 (2013.01); B01D 46/2411 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A respirator comprising:
a face shield;
a rim encompassing the face shield;
a nose piece, the nose piece is configured to create a nose seal around a user's nose and mouth, the nose seal defining a breathing zone;
a face seal, the face seal together with the rim and the face shield is configured to create an outer seal on a user's face, wherein a facemask zone is defined between the outer seal and the nose seal;
an inhalation pathway, the inhalation pathway comprising:
a conduit comprising:
a first end rigidly coupled to the nose piece;
a second end opposing the first end and including a filter cartridge engagement structure;
a sidewall extending between the first end and the second end, the sidewall having an outer surface and an inner surface;
a channel defined by the inner surface of the sidewall, the channel extending through the conduit providing a direct pathway into the breathing zone; and
a vent located through the sidewall at a location between the filter cartridge engagement structure and the first end of the conduit such that air from within the conduit is in communication with the facemask zone;
a filter cartridge assembly configured to couple to the filter cartridge engagement structure of the conduit; and
an exhalation pathway, the exhalation pathway comprising:
an exhalation conduit coupled to the nose piece; and
a cover coupled to an outer end of the exhalation conduit.
 
10. A full-mask respirator comprising:
a shield;
a rim encompassing the shield;
a nose piece, the nose piece is configured to create a nose seal around a user's nose and mouth;
a face seal, the face seal together with the rim and the shield is configured to create an outer seal on a user's face;
an inhalation pathway, the inhalation pathway comprising:
a conduit comprising:
a first end rigidly coupled to the nose piece;
a second end opposing the first end and including a filter cartridge engagement structure;
a sidewall extending between the first end and the second end, the sidewall having an outer surface and an inner surface;
a channel defined by the inner surface of the sidewall, the channel extending through the conduit providing a direct pathway into the nose piece; and
a vent located through the sidewall at a location between the filter cartridge engagement structure and the first end of the conduit such that the vent is outside of the nose piece;
a filter cartridge assembly configured to couple to the filter cartridge engagement structure of the conduit; and
an exhalation pathway, the exhalation pathway comprising:
an exhalation conduit coupled to the nose piece; and
a cover coupled to an outer end of the exhalation conduit.