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

Claim 17:
18. A mask, comprising:
an outer shell including a transparent forward panel and a perimeter wall projecting from an edge of the forward panel to a free end, wherein first and second openings are formed in the perimeter wall of the outer shell;
an inner shell including a transparent forward panel and a perimeter wall projecting from an edge of the forward panel to a free end, wherein first and second openings are formed in the perimeter wall of the inner shell, and wherein the inner shell is nested within the outer shell such that the first and second openings of the inner shell substantially align with a respective one of the first and second openings of the outer shell;
a first filter fully overlapping the first openings of the inner and outer shells;
a second filter fully overlapping the second openings of the inner and outer shells; and
a seal covering the free ends of the perimeter walls of the inner and outer shells, and wherein the seal includes a slot receiving the free ends of the perimeter walls of the inner and outer shells.