Patent ID: 11911637
Assignee: FORD GLOBAL TECHNOLOGIES, LLC
Field: Other consumer goods (Other fields)
Classification: CPC A | IPC A

Claim 18:
19. A mask, comprising:
an outer shell including a first set of openings, a second set of openings, a forward panel, and a perimeter wall projecting from an edge of the forward panel to a free end;
an inner shell including a first set of openings, a second set of openings, a forward panel, and a perimeter wall projecting from an edge of the forward panel to a free end, wherein the inner shell is nested within the outer shell such that the first and second sets of openings of the inner shell substantially align with the corresponding first and second sets of openings of the outer shell;
a first filter arranged between the inner shell and the outer shell such that the first filter fully overlaps the first sets of openings of the inner and outer shells;
a second filter arranged between the inner shell and the outer shell such that the second filter fully overlaps the second sets of openings of the inner and outer shells;
a seal covering the free ends of the perimeter walls of the inner and outer shells, wherein the seal includes a slot receiving the free ends of the perimeter walls of the inner and outer shells, wherein the slot includes a plurality of fingers inclined away from an opening of the slot, and wherein the seal includes a constant cross-section along an entirety of the seal;
a plurality of strap attachments projecting outward from the perimeter wall of the outer shell and configured to attach to a strap, wherein at least some of the plurality of strap attachments are arranged closer to the forward panels than the free ends;
wherein the perimeter walls of the inner and outer shells are tapered toward the forward panels,
wherein the first and second sets of openings of the outer shell are formed in the perimeter wall of the outer shell,
wherein the first and second sets of openings of the inner shell are formed in the perimeter wall of the inner shell,
wherein the forward panels are transparent, and
wherein the first and second filters are arranged so as to not obscure a view through the forward panels.